2013/06/30

AFL Offers Fujikura 70R Ribbon Fusion Splicer to North America


AFL has launched sales of the Fujikura 70R fusion splicer in North America, which is following the 12s, 12R, and 70S models. This product is recorded to the be the fastest ribbon fusion splicer in the world until now. The new design streamlines the steps required to complete splices, resulting in greater productivity, which is based on the success of the Fujikura 60R ribbon fusion splicer.

"The 70R builds on the excellent track record set by the 60R. With the automated wind protector and tube heater, quality splicing is even faster. The tube heater clamps the splice protection sleeve from both sides, resulting in a shrink time of an impressive 40 seconds. " Commented Greg Pickeral, product manager, fusion splicing systems for AFL.

Enhanced features of the Fujikura 70R fusion splicer include:

Automatic and fully programmable wind protector
40-second tube heater
Electrodes with enough life to support 1500 splices
High capacity Lithium-Ion battery pack (110 splices/shrinks)
On-board training and support videos
A six-direction drop-proof design with fully ruggedized rubber casing
Dust- and rain-proof exterior
A transit case with a detachable, built-in worktable
Full compatibility with the FuseConnect line of splice-on fiber-optic connectors

The 70R is one of several new splicer introductions from Fujikura this year. Later this year, Fujikura plans to unveil the 19s, a fixed V-groove single-fiber fusion splicer, and 19R four fiber ribbon fusion splicer.

Kindly note that the Fujikura ribbon fusion splicer 60R, 60S, 80S, and more fusion splicers are all available at FiberStore. Click and get a big surprise for the price!

2013/06/27

FiberStore Overseas Market Grew Rapidly


"Building an International leading manufacturer of optical devices is our strategic goal, while opening up overseas markets is one of the important parts" Andy Zhou, FiberStore product and market vice president disclose, in 2012 the company's revenue from overseas markets accounted for 27.6% of the total revenue, and the goals for the feature 3-5 years is to improve the proportion to 40%.
Good Growth in Overseas Markets
Andy Zhou discloses, 2012 FiberStore revenues from overseas markets have achieved 97 million $, increases 44.98% of the previous year, with gross profit margin of 25.86% which is higher than the national level.
FiberStore overseas sales with the own main channel, after years of layout, have comprehensive covered Europe, North America, Asia Pacific, Latin America markets, and has set up offices in Europe, North America and Japan, and its products solutions also enter dozens of countries.
Benefit from this, in recent years, even though the global economic turn down, FiberStore contract amount continually high record highs, especially in key markets such as Europe and North America, by cooperating with overseas large equipment supplier, the product promotion and the project has made big progress, Andy Zhou presented.
For example, he said that in the past year. FiberStore broke into the closed Japanese PON market supply system, and achieved a breakthrough, market segment in Europe also "Full Bloom", making the company the first choice for many integrators.
On the client side, FiberStore entered the top twenty global optical communication equipment enterprises in the world, and become the main supplier of fiber optic transceivers for the top five equipment companies.
About FiberStore
The FiberStore Co., Ltd. is China's largest optical component supplier, which is also the only company in China optoelectronic devices, systematic, strategic research and development of high-tech enterprises, and optoelectronic devices industry the most influential one of the entities.
For about more than 13 years development from 2000, FiberStore Co., Ltd has established an advanced research and development laboratories and production lines, including passive optical network, or PON, subsystems, optical transceivers used in the enterprise, access, and metropolitan segments of the market, as well as other optical components, modules, and subsystems. In particular, FiberStore products include optical subsystems used in fiber-to-the-premise, or FTTP, deployments which many telecommunication service providers are using to deliver video, voice, and data services.

2013/06/26

Silicon Photonics Lead The Trend Of 100G Network


FiberStore news, when assembled eliminated pure handmade reliable optical components containing hundreds of optics, steering the occasion of silicon photonics technology, the industry will enter a new better world. On the other hand, switching network upgrade from 10G to 100G, even when eventually reach 1TB, will also face tough challenges from silicon photonics technology. Some optical function is easy to realize by silicon, but some are not. In fact, the entire optical engine must be integrated in silicon platform.
Optical engine can handle multiple high-speed electrical channels, converts it to optical signal, then together the information on these channels, through an fiber optic to transmit the information to any location ─ ─ distance from near to the next frame or as far as across the entire data center from the other end. At the receiving end, optical engine will flow received light streams separate into different channels, and then converted back to radio channel. In the data center, optical engine used for connecting the cluster switches and routers, which is a low power consumption, smallest pluggable transceiver technology; optical engine is also used in active optical cable to connect to the server and switch. In addition, the optical engine soon will also be embedded into the splint (mid-board) in order to reduce the consumption of board to board application and increase the density.
However, integrating optical functions on CMOS platform will encounter many challenges, which is original used to realize electric function design. Take a look at each key photoelectric function and the challenges of its fully integration in a CMOS platform.
Laser
Laser provides fiber optic light source for the optical engine, but to some data centers, using laser is too expensive. Kotura has developed chip function by using low-cost low-speed laser. Laser is a type of optical component which has not achieved single-chip integration, but the latest development of laser and array of flip chip bonding technology, have made it into a large number of low-cost manufacturing process. Chip functions removed the lens, isolator and beam collimator needed by traditional laser subassembly. The design of Kotura laser removed the expensive sealed package. In the automated assembly platform, just a few seconds for the array laser entire fabric and welded to silicon photonic chip, but also overcome the difficult problem of low-cost light source integrated in the chip.
The real value of fiber optic network is the ability to combine multiple wavelengths of light into one entity channel. To the 100G interconnection,the use of this called wavelength division multiplexing (WDM) parallelism, put the light combination of four wavelengths in a fiber. Of course, the four parallel fiber channel can work, but this increases the cost of network, but also a waste of bandwidth of fiber optic. WDM makes the use of same data center architecture to expend become possible, in order to support more channels in the future.
Because WDM requires both specific wavelength and multiplex wavelength laser, and therefore using silicon photonics to achieve is not easy. Nevertheless, the industry still don't want to use the expensive specific wavelength laser, which is commonly used in telecommunications network. A better solution is to use a universal laser, through integration of optical switch reflector in the silicon chip changes universal laser into specific wavelength laser. By changing the position of the reflector, Kotura will make each gain chip becoming a unique specific wavelength laser.

Transmode iAccess Addresses Large-scale Optical Access with WDM-PON


Transmode Systems AB says unveiled its iAccess portfolio, which leverages its iWDM-PON offering to help service providers roll out Ethernet access networks for applications such as business Ethernet and mobile backhaul services.
The iAccess package combines a new compact, low-cost network interface (NID) with the company's I-WDM - PON hardware and Enlighten multi-layer network management system to provide what Transmode asserts is a low-cost, simple to install/configure/manage, and highly scalable approach to last mile Ethernet applications. The systems use a "remote port" architecture which makes all NIDs into extensions of the Ethernet Muxponder to which they are connected.

With the remote port architecture, the NID automatically takes device and service configuration data from the network when it is connected. This removes the need for a separated IP address for each NID, saying these sometimes scare resources. Coupled with the colorless optical layer through the WDM-PON optics, iAccess creates a highly automated, simple to operate, and scalable system, according to Transmode. This is particularly true in comparison to other approaches that are either derived from more complex and expensive optical access platforms or are based on simple hardware designed for residential applications, the company adds.
The iAccess is thus ideally suited to the delivery of Ethernet-based services that need to scale to large volumes or where simplicity is key. Transmode continues. Installation procedures are quick and simple and Enlighten allows operators to create service templates to speed up deployment of multiple identical or similar services - enabling operators to minimize open costs in addition to the lower initial capex costs.

Sten Nordell, Transmode's CTO, said, "The new iAccess solutions is a great step forward in terms of simplifying and scaling Ethernet access networks while also enabling network operators to hit the right price points for these high volume services. We have created a real plug-and-play solution where the WDM-PON enabled NID is simply connected to the access fiber, powered up and then services are automatically created. This enables operators to quickly roll out new services with the right level of carrier class functionality such as Metro Ethernet Forum Carrier Ethernet 2.0 services."

Published by FiberStore, industry news - www.fiberstore.com

2013/06/24

10G EPON Shipments Will Keep Growing


FiberStore news, with the rapid global deployment of FTTH, PON global market scale is constantly expanding, but the current PON market growth is beginning to slow down. In the recent "2013 China Optical Network Seminar", Ovum principal analyst Julie Kunstler, said in an interview, during 2011-2012, the global GPON / EPON OLT has begun to decline in shipments, the total revenue of PON equipment market is also declined.
However, although the growth of entire PON market started to slow down or even a decline, but 10G PON market has begun to be favored. Julie Kunstler said that, although it is not completely sure which sort of next generation PON technology will become the mainstream in the future, but in Ovum's expectations, the shipments of 10G EPON OLT will maintain a growth trend.
As for the Chinese broadband access market, Julie Kunstler believes that, due to the different wiring conditions of each region and each district, the future Chinese FTTx market penetration is expected to reach 40% -50%, the future will be a variety of access technologies co-exist, including PON, ADSL, VDSL, etc.
Julie Kunstler pointed out that, 2012 was the first year GPON OLT shipments beyond that of EPON, but the OLT total market has already begun to decline. Data show that, in the first quarter of 2013, EPON OLT shipments decreased 7%, compared to the same period down 46%; GPON OLT shipments decreased by 9%, an increase of 28%. In revenues, in the first quarter of 2013, EPON revenue decreased 25%, down 46%; GPON revenues decreased 29 percent, an increase of 3%.
Ovum predicts that, in the next few years, global GPON / EPON OLT shipments will further decline, it will be expected to from 41 million in 2012 decline to 13 million in 2018. At the same time, in 2012 GPON / EPON ONT / ONU's shipments increased 43 percent compared to 2011, 2012 EPON ONT / ONU shipments still ahead of GPON ONT / ONU shipments, in 2013 GPON ONT/ONU shipments will just run after EPON.
Although entire PON market growth started to slow down or even a decline, but 10G PON market has begun to rise. Julie Kunstler said that, although what sort of future generation PON technology will become the mainstream is still not completely sure, but in Ovum's expectations shipments of 10G EPON OLT will maintain a growth trend, and its application scenarios will be mainly reflected in FTTB, mobile backhaul, etc. Ovum forecasts, 10G EPON OLT's shipments will maintain growth trend in 2018 will reach 500 thousand, 10G GPON OLT's shipments will still be relatively small.

Fiber Optic Cables Routing in Cable Management


By using a cross connect cabinet, cross-connect fiber cables are routed between two termination points while using standoffs, brackets, along with other wire management devices.

Cross connect wiring requires extra care in handling to maintain performance characteristics. Guidelines that are using in telephone-grade cross-connects are not whatsoever right for the larger performance types of LAN wiring. A good example: sharply bent jumpers really are a common practice when they’re wrapped around wire management brackets. But in fiber cable management, these sharp bends may be under the minimum bend radius recommended in TIA/EIA-568-B.
Various fiber cable routing schemes help achieve redundancy in SONET networks. Trunks are the main fiber cables that may carry hundreds of fiber strands of carries.
Laterals are the fiber cables in the customer premises towards the nearest splice point around the cable trunk. Within cities, laterals is often as short as a few meters or could extend several kilometers in suburban and rural areas.
Aerial installation on existing poles is the most cost-effective installation method while offering moderate reliability. Rules and operations for licensed carriers and fiber installers to access existing utility and telephone poles are very well established by regulatory bodies. Many regulatory bodies require carriers to install extra conduits which are accessible by other licensed carriers or fiber installers.
To be able to enhance the accessibility to cable telephony systems, some operators are installing redundant node receivers and transmitters, and connecting these to the headend using fiber optic cable having diverse routing.
Outdoor hardware consists of a type of fiber optic splice closureswall-mounte distribution centers, and pedestal-mountable cross-connects. The unit provide environmental protection for splices, connectors, and jumpers within the outside plant environment, often required in industrial and other special applications.

In certain indoor circumstances, space is restricted for mounting hardware. Specially designed furcation (or fan-out) kits provide protection and pull-out strength for bare fibers, and they are direct connectorized. They are best when the fiber counts are low and all of the fibers is going to be patched into other hardware or electronics within the same are.

2013/06/18

Benefits From RS485 Converters


For years, people were accustomed to RS232 ports. However, recently, RS485 converters took over and industries are realising the advantages of using these converters. These converters are capable of high speed when compared to other kinds of converters. Hence, their popularity is growing manifold.
Typically, industries use RS232 to RS485 converters to utilize multiple features that the converters have. They are utilised in industries for gadget control, data acquisition, remotely managing temperature and other settings. For one thing, in industrial setups, there’s always a need to send data over long distances. This selection is not present in RS232, which can’t transmit and receive data over long-distance. However, the RS485 has the ability to transmit data on the distance of up to 4,000 feet.
Perhaps, one of the biggest benefits of RS232 to RS485 converter is the ability of the converter to withstand electrical spikes. In industrial setups, due to the different machinery being run, there’s always static electricity generated which can cause electrical spikes and ground loops. As a result, expensive machinery and gadgets could possibly get damaged. However, the converter is able to withstand these spikes, and for that reason actively works to protect gadgets and machinery.
The RS485 converter does not require an application driver to operate. The moment it’s plugged on the device and the data cables are connected to it, it begins working. Hence, the simple plug and play system are an advantage and doesn’t require the user to set up any kind of software. Furthermore, the rate from the converter is very fast. The converter includes a speed of upto 10 maps on the short distance, but because the distance increases, the rate reduces, but is still comparatively fast. Within the same building, if a person desire to connect to a specific device, that’s, certain machinery on production, one need to go to the pc to connect exactly the same. To solve this issue, there is a perfect solution which is interface RS232 to RS485 converters. There are various strengths of those converters. There’re also guaranteed benefits above RS232 converters. The foremost and foremost advantage is that RS485 is a single supply voltage whereas however a 5V and 12V is needed for RS232. It just needs 5V by RS485 converters because it swings over to 5V at the output.
RS485 converters have wide temperature and power ranges and they are designed to meet industry demands for reliability and functionality in environments with extreme amounts of interference. It enables connectivity between items which operate different communications protocols. RS485 converters are used in motor managers, sensors, temperature controllers and control valves. It’s also been seen that this converter does not stipulate using any sort of connector. Hence, any kind of connector could be mounted on it, such as DB9 sequential connector or RJ11 jack, without having affected its performance in any manner whatsoever. While utilizing converter and appropriate connector, a RS232 serial port of a computer could be linked to any other device either in the same room or perhaps in a remote location.
RS485 converters come as 2-cable or 4-cable models fiber optic modems. The second is said to be more effective, because the driver spreader linked to all of the node recipients, and the joint transmitter is attached to the driver recipient at the other end. This not only enhances the speed. It also helps make the communication more effective between your connected systems.
Furthermore, the RS485 converter has multi-point system, which isn’t present in other converters. It can have up to 32 nodes and this enables the attachment of several devices simultaneously. These multiple devices can run simultaneously the whole time, as long as the converter has an external source of energy.
The information can be driven from an extended distance by RS485 that is among the key benefits of this converter. 1200 meters can be driven that is about 15 meters maximum for RS232. Speed of RS485 becomes manifest pretty quickly. For the slow ones too, there is a minimum of 10 megabits. Right now running at approximately 50 megabits, the fastest RS485 converter transceivers can be found nowadays. The quickest transceivers at this time is one megabit by RS2322 presently. Better noise immunity is received by RS485 that is another most prominent benefit of this converter. Any noise is subjected externally to the cable because of the differential signal and is put through both cables. Noise is really cancelled out, when you take the distinction between the two.

Purchase Optical Transceiver Modules On The Market


There exist several small pluggable optical modules and network what to pick from available on the market. Optical transceiver modules both emit and receive optic signals together.
All optical transceiver modules must be made and created along the lines of the Multi-Source Agreement. Industry professionals make sure that modules are made under this strict agreement. You will notice when researching optical transceiver modules that they tend to be sectioned into groups by transmission speed rates. Each pluggable module supports ranges from 1 Gbps to 10 Gbps. You will be able to determine which works great for you according to rates that modules support.
You will locate a variety of optical modules that act at different speeds and ranges. There are XENPAK modules, XFP modules, X2 modules, GBIC modules, SFP modules, SFP+ modules, and BiDi XFP pluggables. Listed below is detailed data on just a couple.
For example, the 10G BiDi XFP series transceivers are designed for bi-directional 10G serial optical data communications such as IEEE 802.3ae 10GBASE-BX by using 1330(1270) nm transmitter and 1270(1330) nm receiver. The transceiver includes two sections: the transmitter section utilizes a multiple quantum well 1330(1270) nm DFB laser and is a category 1 laser compliant based on International Safety Standard IEC 60825; the receiver section uses a built-in 1270(1330) nm detector preamplifier (IDP) mounted within an optical header along with a limit.
Modules like GBIC have special working functions for example attaching the Ethernet network and also the fiber optic network. GBIC means gigabit interface converter, and is an optic used with one plug in an Ethernet port and the other plug for connecting fiber patch cords. GBICs are hot pluggable, which offer you the capability to mix one type of interface with another without having to turn off. Optical power and wavelengths, working distance, and transmission velocity determine the particular groups that GBIC modules are put in.
New generation GBIC modules are thought to be the SFP transceivers. Short for small form-factor pluggable, SFP modules will also be hot pluggable optics. Hot pluggable transceivers tend to be simpler to keep up and change in comparison to basic interface modules. Items like Cisco SFP transceivers tend to be smaller and are only about half how big GBIC optics. These modules send rates that vary from 100 Mbps to about 4+ Gbps, while SFP+ modules can send rates of 10 Gbps. You will find that these modules transmit as much as 120+ kilometers right down to about 500 meters.
Optics such as XENPAK are known to be the largest of the transceiver modules. There’s a large range of XENPAK modules that function with different lines including copper line, multimode optical fiber line and single mode optical fiber line. Multimode fibers function at a distance of up to 300 meters while typical copper lines operate as much as about 15 meters. Most single mode modules span as much as 80km at maximum. Produced first underneath the Multi-Source Agreement were these 10Gbps pluggable optical transceivers.
Whatever type of transceiver optics you are in looking for the market, you should know that you’re consistently getting items that are made under the highest standards possible. Depending on your fiber optic networking experience, you might be in the market for other technical things like fiber patch cords and fiber media converters which are also easily purchased. With today’s technology, you are able to count on optical modules and all other fiber optic products to continue to determine advancements, becoming faster and better.

2013/06/16

Advantages Of Fiber Optic Transmission And Application In CCTV System


The basic architecture of fiber optical communication is only "fiber transmitter" and "fiber receiver" converter units, so that when we want to transmit signals by using fiber optical communication, signals must first be converted into optical signals at the transmitting end, then through fiber to transmit to the receiving end. Finally optical signal is reverts to the original electrical signal, so "optical transceiver" is a very important part in fiber optic communications, components and equipments of this means communication needed have formed another chain. For example, optical receiver, nowadays not few companies have developed optical module which can speed up to 10Gbps.
The Development Of Fiber Optic Technology
With more and more requirements form a variety of video and data CCTV, the video signal transmission distance has been unable to meet the demand, therefore, the progressive development of optical integrated video and control signals (WDM or DWDM multiplexer technology) can transmit over longer distances.
8 Advantages Of Fiber Optic Transmission
1. High sensitivity, is not interfered by the electromagnetic noise;
2. Small size, light weight, long life, low price;
3. Insulation, high pressure, high temperature resistance, corrosion resistance, for a particular work environment;
4. The geometry can be modulated as the environment requirements, signal transmitted easily;
5. high-bandwidth, less attenuation, long transmission distance;
6. Small signal crosstalk, high transmission quality;
7. High security;
8. Easy to installation and handling of raw materials.
Fiber Optical Transmission In Architecture And Application Of CCTV System
In addition to the requirements of combination video and control, the architecture of CCTV transmission is the main principle of entire fiber transmission construction, with the deployment in different ways, also has different applications and functions.
The application of fiber optic communication is extremely wide, can be broadly divided into five categories, including Telecom network, Datacom network, CCTV and CATV fiber optic transmission network, and Fiber In The Loop (or FITL). While in national defense and military, there are also the applications of fiber optical communication.
In the CCTV network area, they are mostly used as the backbone part of monitoring system, it may combining a simple video and control signals converted to FOT / FOR, there are also over TCP / IP network converts digital video signals converted to TCP / IP signals, for transmission and reduction mode.

2013/06/14

Cisco CR-X Core Router offers 10X Capacity Improvement over CRS-1


Cisco has unveiled the latest core router, Carrier Routing System-X (CRS-X). This system will work with Cisco’s new CPAK optical transceivers to support 400Gbps per slot. Capacity of this system will be able to expand up to 1 Pbps in a multi-chassis deployment, which is 10X the capacity of the original CRS-1.

CPAK 100-Gbps pluggable transceiver is based on the nLight silicon photonics technology, which is designed as a smaller, lower-cost alternative to CFP transceivers. This transceiver will first be used on Cisco ONS 1545 MSTP 100G coherent transponders.

Each 400-Gbps line card will use Cisco AnyPort technology to enable flexible interface configuration. For example, each interface can be configured for eight single-port 100 Gigabit Ethernet (EbE), 2x40GbE, or 10x10GbE and either short-, long-, or extended-reach optics by selecting the appropriate CPAK transceiver.

Cisco also will offer an integrated optics, which also called the new Cisco Nv “optical satellite.” Both leverage Cisco’s nLight technology for control plane automation. The nV optical satellite deployments operate as a single managed system with the Cisco CRS family.

The CRS-X has been designed to enable existing CRS-1 and CRS-3 system customers to  upgrade to the new platform easily in with minimal traffic impact via in-service replacement cards, or by adding CRS-X chassis to existing multi-chassis deployments.

According to Mike Haberman, vice president of network operations, Verizon Wireless, Cisco has provided Verizon Wireless with an intelligent core solutions and the ability to scale up to 40G per slot to meet customers future service demands.

Cisco executive vice president, board director and CTO, SoftBank Mobile Corp. also express, the continued development of the Cisco CRS platform has served as the foundation of their advanced network infrastructure for many year. With the ability to scale to 400G per second and highly available architectur, the CRS will continues to provid unparalleled investment protection and help ensure SoftBank Mobile’s ability to remain one of the leading broadband content and service providers in Japan.

FiberStore is one of the main fiber optic transceiver and routers providers, please visit www.fiberstore.com to get want you want.

2013/06/13

High Density Fiber Patch Cables For Using In Data Center


Data center fiber optical transmission system requirements on the bandwidth shows high growth trend, while the use of a new generation of fiber optic and fiber optical module can continue to explore the potential of optical network bandwidth. Since multi-mode fiber has lower overall cost of active and passive, prompting multimode fiber applications have an absolute advantage in the data center. The launch of OM4 new category EIA/TIA492AAAD multimode fiber standard, providing a better transmission way for multi-mode fiber widely used in the future. Multimode fiber from OM1 to OM2, from OM3 cable use VCSEL laser optimization technique to OM4 cable, the bandwidth is progressively enhanced, promoted by a large growth requirements of online media and application in the cloud computing environment, this module is the ideal communication solution for data center, server farms, network switches, telecom switching centers and many other needs high-speed data transmission embedded applications, the system applications include data aggregation, backplane communications, proprietary protocol data transmission and other high-density / high-bandwidth applications.
In the 40G/100G state port device such as QSFP will be directly connected to the MTP/MPO connector, regardless if the fiber channel is connected by several fiber optic cables, or what type of connection of the fiber connected. 40G/100G of equipment and equipment ultimately channel connection need to form a special model, so that the equipment transmitting end and the receiving end of the channel correspond to each other.
MPO / MTP high density fiber pre connection system currently mainly used in three areas: high-density data center environment applications, fiber-to-building applications, inside connection applications between optical splitter, 40G, 100G QSFP SFP+ and other fiber optical transceiver devices. There are a series of high-density parallel optical connectivity products adaptable to modern data center fiber transmission, which are 16x8 OM3/OM4 MPO bundle, MPO Loopback and QSFP Jumper.
MPO/MTP Fiber Cable is offered for various applications for all networking and device needs like 100 Gigabit modules. It uses a high-density multi-fiber connector system built around precision molded MT ferrule. MPO/MTP fiber cable is available in UPC and APC finishes, and support both multimode and single mode applications. Work with both VCSEL laser and LED sources, 10G OM3 OM4 MPO/MTP Cable provide 10 gigabit data transfer speeds in high bandwidth applications and they are 5 times faster than standard 50um fiber cable. Multimode MPO/MTP Cable is the cable of choice for most common local fiber systems as the devices for multimode are far cheaper. Single-mode MPO/MTP Cable is primarily used for applications involving extensive distances. The MPO/MTP Trunk cable is designs for Data Center Applications. The single-mode and multimode MPO/MTP cables are round cables with the outer diameter of 3.0 mm or 4.5 mm. The connector the cable is terminated on is so called MPO/MTP connector.
With server virtualization and cloud computing development and the trend of network integration, bringing greater demand of faster and more efficiently data center networks. Currently 10G switch is consist of 48 10G channels per line card, mainly limited by the SFP+ module form factor. To meet the higher bandwidth requirements, customers can use the higher-density QSFP+ ports developed by QSFP+ Jumper, and by increasing the per-channel rate and increasing port density to achieve customers’ high bandwidth requirements.

2013/06/06

Direct Attach Cables For 10 Gigabit Ethernet Application


The dramatic growth of bandwidth requirements has led to the increasing worldwide use of higher-performance servers. This in turn has led to the expanding need for 10 Gigabit Ethernet(10GE or 10GbE or 10 GigE), refers to various technologies for transmitting Ethernet frames at a rate of 10 gigabits per second (10×109 or 10 billion bits per second), is rapidly gaining traction within data centers. The IEEE 802.3ae standard permits distances between physical locations up to 40 kilometers over a single-mode fiber. Both single-mode and multi-mode fiber systems can be used with 10 GbE applications.
10GbE supports both copper and fiber cabling. However, due to its higher bandwidth requirements, higher-grade copper cables are required: category 6a or Class F/ cat 7 cable for links up to 100m. Unlike previous Ethernet standards, 10 gigabit Ethernet defines only full duplex point-to-point links which are generally connected by network switches. Half duplex operation and hubs do not exist in 10GbE.
Over the years, improvements in 10GbE technology, price, and performance have extended its reach beyond enterprise data centers to midmarket networks, they confidently deployed 10GbE in their corporate backbones, data centers, and server farms to support high-bandwidth, mission critical applications.
There are many 10 Gigabit Ethernet relevant products available, and the direct attach cable(DAC) is one of them. Direct Attach Cables are widely applied in storage, data, and high-performance computing connectivity. They are used to connect one Mobility Access Switch with another when forming a stack.
Important Of Direct Attach Cable:
DAC is supported only on 10G ports. Do not insert a DAC into a 1G port;
Do not attempt to unplug the integrated copper cable from the transceiver and insert a fiber cable into the transceiver.
Common direct attach cables include SFP cables, SFP+ cables, XFP to XFP cables, QSFP+ cables, MIni SAS cables, CX4 cables. These direct attach cables can meet the ever growing need to cost-effectively deliver more bandwidth, and they can be customized in different length to meet your requirement.
10G SFP+ Cables
Small form-factor pluggable plus transceiver (SFP+) direct attach copper cables, also known as Twinax cables, are suitable for short distances up to 23 ft (7 m), making them ideal for highly cost-effective networking connectivity within a rack and between adjacent racks. 10G SFP+ Cable connects from one SFP+ slot to another, without the need for SFP+ transceivers. The Direct-Attach cable is terminated on both ends with mechanical connectors that plug directly into SFP+ slots the same as SFP+ transceiver modules to. The cable is fully passive, it does not have signal buffers or amplifiers. 10G SFP+ Cable is an economical solution for interconnecting 10 Gigabit Net Optics products, also great for making short 10 Gigabit connections between network optic product and server, network switch, and monitoring equipment that have SFP+ slots.
Direct attach cable assembly is a high performance integrated duplex data link for bi-directional communication. Have a wide selection of direct attach cables at FiberStore, there always has one meets your demand.

2013/06/05

Using Fiber Media Converters To Extend Your Network


Fiber Media Converter makes the conversion from one network media type (including cable, connector types and bandwidth) to another media type, can connect different Local area network (LAN) media, modifying duplex and speed settings. Fiber media converters had been introduced to the industry nearly two decades, and play an important role in interconnecting old existing copper-based, structured cabling systems to the latest fiber optic systems. Media converters are commonly used to extend the network, can connect to network switches, hubs, routers and even direct to computer servers.
Structure Of Media Converter
A media converter is composed of two transceivers or MAU (Media Attachment Units) that can transmit data to and receive data from each other, and a power supply.
Each of the transceiver (MAU) has a different industry standard connector to join the different media. One media type goes in and other media type comes out. The connectors comply with IEEE standard specifications and use standard data encodings and link tests.
The Types And Applications Of Media Converters
Fiber Media Converters enable upgrading the network to better and faster technology, such as fiber optic cabling, without requiring a full network retrofit. Media converter types range from small standalone devices and PC card converters to high port-density chassis systems that offer many advanced features for network management.
Switching media converters can connect legacy 10BASE-T network segments to more recent 100BASE-TX or 100BASE-FX Fast Ethernet infrastructure. For example, existing Half-Duplex hubs can be connected to 100BASE-TX Fast Ethernet network segments over 100BASE-FX fiber.
A fiber to ethernet converter converts digital electric Ethernet signals to optical signals. 10/100M BIDI WDM Ethernet media converter and 10/100M Ethernet media converter extend transmission distances well beyond the capabilities of twisted pair wiring, and can reach up to 2km, 20km, 40km, 60km, 80km, 100km, or 120km.
10/100/1000 Media Converter converts data transmission between twisted pair electrical signals and optical signals. These media converters can extent the transmission distance of a network from 1000m over copper wires to 120km in which there is no help of any other converter. Using 10/100/1000 media converters is an economical solution to achieve long distance transmission.
Gigabit Media Converter converts and transmits Gigabit Ethernet networks into Gigabit fiber optic networks, which is applied in Gigabit Ethernet as copper to fiber conversion equipment. Gigabit media converter can provide building-to-building connectivity and save a lot money.
10 Gigabit Ethernet Converters fulfill the connecting 10 Gigabit Ethernet links over short or long distances in high density applications. 10G media converters can extend 10GE lines from 26 meters up to 160km between switches and routers with copper to fiber or fiber to fiber conversion.
Media Converter Rack Chassis is mainly used to manage various media converters, all the converters plugged into the chassis will share same power supply. There are 14 slot media converter chassis, 16 slot media converter chassis and 17 slot media converter chassis. 14 slot type media converter chassis for stand-alone type converter, 16 slot media converter chassis for card-type media converters and 17 slot media converter chassis for Ethernet to fiber or Ethernet to copper media converter.
A single mode to multimode converter conducts the transparent conversion between single mode and multimode optical fiber. It is used in the applications where media conversion required between multimode segments separated by long distances. They not only fulfill the conversion of single mode and multimode at 850nm/1310nm wavelength, but also that of 850nm/1310nm and 1550nm wavelengths.

2013/06/04

The Evolution And Trends Of Fiber Optic Transceivers


When it comes to fiber optic transceivers, we can easily think of a lot of different package formats like 1X9, GBIC, SFF, SFP, etc.
1X9 package optical module was first produced in 1999, with SC head, is fixed optical module products, usually directly solidified on the circuit board of communication equipment, used as a fixed optical module. Then, 1X9 package optical module was gradually developed towards miniaturization and hot-pluggable.
Fiber optical module products began to develop in two aspects. One is hot-pluggable optical module, which became GBIC. The other is small, with LC head, directly solidified to the circuit board, which became SFF 2X5, or SFF 2X10.
Both GBIC and SFF optical modules have been widely used.
GBIC module, once widely used in switches, routers and other network products. The old Cisco and other vendors’ switched and routers have been widely adopted GBIC modules. Compared with 1X9, GBIC has obvious advantages, hot-pluggable feature makes GBIC can used as an independent module, users can easily maintain, update fiber optic transceivers and fault location. However, with the continuous development of network, GBIC module’s shortcomings also gradually appeared. The main disadvantage is its large size, resulting in a smaller density of service boards, boards can not accommodate a sufficient number of GBIC, unable to adapt to the trend of rapid development of network.
SFF module, is another branch of fiber optic modules’ evolution, now is widely used in EPON system. In the EPON ONU system, all adopt SFF module. The main reason why ONU use SFF optical module is EPON ONU products are usually placed in the users, require fixed rather than hot-pluggabe. With the rapid development of EPON technology, SFF market is gradually expanding.
SFP is the latest fiber optic transceiver, also is the most widely used module currently.
SFP module is hot-pluggabe (like GBIC) and small (like SFF). Using LC head, and its size is small as 1/2 to 1/3 as that of GBIC Module, which greatly increases the port density of network device, adaptable to the trend of the rapid development of the network, so it has been the most widely used. Currently the main equipment manufacturers, without exception, no one abandoned GBIC products and only produce SFP transceiver. Thanks to the centralized standards, SFP modules from different manufacturers can be compatible with each other, SFP is available as a stand-alone network equipment.
According to the rate, fiber optic transceivers can be divided into 100Base, 1000Base (Gigabit) and 10GE for Ethernet, 155M, 622M, 2.5G and 10G for SDH, which all have been widely used, and now the rate of 40G and 100G has appeared. The 10G modules are widely used in the main transmission, mainly include XENPAK, X2, XFP and 10G SFP+.
XENPAK module is an important step in the evolution. XENPAK in architecture for media access controller provides a XAUI interface. Serializer / deserializer to 10 Gbps available payload and forward error correction overhead assigned to the interface 4 channels, each one line signaling rate decreased to 3.125 Gbps. Compared with non-hot-pluggable, XENPAK module is very attractive, but it can not meet the demand of some important market. XENPAK power is typically 10W, caused a certain influence on the structure of size. Because it increases the printed circuit board manufacturing costs and reduce valuable trace space.
X2 transceiver also uses electrical interface(like XENPAK), but there are a few exceptions. X2 provides a 4-bit port address space, a bit less than XENPAK. X2 also reduces the number of power pins, and the bottom plate and electrical grounding utilities. X2 retained the 4 vendor-specific pin as Xenpak. In optical technology, X2 supports 10GbE, OC192 SONET, 10GFC and other standards.
XFP (10 Gb small form factor pluggable module), it provides a architecture with its four-channel interface different from XENPAK. XFP is a single-channel serial module using a XFI (10 Gb Serial Interface) connection at full speed, can replace XENPAK and its derived products. Without serializer / deserializer, XFP is smaller, cheaper and less power consumption.
SFP + module is smaller than XFP, the circuit for clock and data recovery is transferred to the card from the chip. SFP + module compressed size and power consumption through putting the CDR and electronic dispersion compensation outside the module.
No matter how fiber optical module develops, it has its own direction. Currently fiber optical transceiver mainly toward the directions of miniaturization, low cost, low power, high speed, long distance and hot pluggable.

What is Cable Tie?


A Cable Tie, also known as a zip tie or tie-wrap, is a type of fastener, designed for bunching electric cables or wires and to organize cables and wires, but with a wide wariety of other applications.
Cable ties are usually small plastic strips used to secure a bundle of separate wires or cables. A ratcheting system allows the ties to be tightened without causing damage to the individual wires. Cable ties are generally inexpensive, and can be ordered in various colors and sizes. Standard lengths range from 4 inches (10.16 cm) for home use to 48 inches (121.92 cm) for industrial needs. For temporary use, standard garbage bag ties with ratchet designs can often be used in their place.
Many projects involving wired components, such as stereo systems or computer installations, can quickly become unwieldy without the aid of cable ties. Wire bundles often need to be threaded through small openings – a task that becomes much easier with the wires all held together. Projects involving cables and wires can also present a tripping hazard, which could lead in turn to vital connections being pulled out of their sockets. Ties placed at regular intervals can keep stray wires out of high traffic areas.
In its most popular form, a cable tie consists of a sturdy nylon tape with an integrated gear rack, and on one end a ratchet within a small open case. Once the pointed tip of the cable tie has been pulled through the case and past the ratchet, it is prevented from being pulled back; the resulting loop may only be pulled tighter. This allows several cables to be bound together into a cable tree.
A cable tie tensioning device or tool may be used to apply a cable tie with a specific degree of tension. The tool may cut off the extra tail flush with the head in order to avoid a sharp edge which might otherwise cause injury.
Cable ties can be used as makeshift handcuffs. Specially constructed physical restraints called PlasticCuffs, based on the cable tie design, are used by police and military to restrain prisoners. Cable ties are also commonly used to prevent hubcaps (also known as wheel trims) from falling off a moving vehicle, and some are sold specifically for this purpose.
Another popular use for cable ties are identification of individual systems. An elaborate home theater system often contains wires leading to and from video, audo, and auxiliary sources. By using color-coded ties, users can easily identify which bundled wires lead to which components.
Standard cable ties do an excellent job of keeping wires bundled together, but they may not offer protection from the elements or other stresses. Instead, some technicians use a cable wrap that covers the entire bundle. This cable protection system may use Velcro technology for security or several judiciously placed ties. Individual wires are protected from excessive bending and friction, which naturally leads to a longer life and fewer repairs. Cable ties are an inexpensive solution to what can often become a very complicated problem involving tangled wiring and frayed nerves.
Cable ties were first invented by Thomas & Betts, an electrical company, in 1958 under the brand name Ty-Rap. Initially they were designed for airplane wire harnesses. The original design used a metal tooth, and these can still be obtained. Thomas & Betts and others, e.g. Panduit and Hellermann, later changed to the nylon/plastic design.
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2013/06/02

How Much Do You Know About Ethernet Network

As you know, nowadays Ethernet is the most common network standards.But you may be confused what is Ethernet.Ethernet is a data link and physical layer protocol defined by the IEEE 802.3 specification. It comes in many flavors, defined by maximum bit rate, mode of transmission and physical transmission medium.
What Is The Background Of Ethernet?
In the early 1980s, Digital Equipment Corporation, Intel, and Xerox developed the Ethernet Local Area Networking format. This technology was soon accepted by the IEEE Committee, creating the 802.3 standard. This standard dictates the use of CSMA/CD (Carrier Sense Multiple Access with Collision Detection) as its accessing scheme. Networks use NIC (network interface card), hub, transceiver, converter, repeater & switch, as well as different types of transmission medias for carrying signals.
A variety of Ethernet types have come and gone over the years, such as the following:
10BASE5 (Thicknet)
10BASE2 (Thinnet)
10BASE-FL
10BASE-T
In the mid 1990s, 100BASE-T (unshielded twisted-pair [UTP]) and 100BASE-FX (using fiber) were ubiquitous in the enterprise network, and they still are. Since the start of the millennium, enterprise networks have actively implemented Gigabit Ethernet, 1000BASE-T, in their network. The push for today is 10 Gbps in the core of the enterprise network.
What Is The Basic Ethernet Theory?
Ethernet Theory is a concept of how computers that are not physically connected should communicate with each other for the transmission of data.
1.Ethernet operational theory is quite easy to understand and a simple analogy is helpful to visualize the basics. Imagine a long hallway lined with offices. The hallway represents the physical network, the offices represent the attached stations. When an occupant wishes to speak to another occupant they would lean into the hallway, listen to make sure no one else is engaging in a conversation, then speak out addressing the desired recipient. All other occupants hear the conversation but ignore it knowing it is not directed to them.
2.Returning to our analogy, what if two or more occupants decide to speak at the same time? Naturally the overlapping voices would become garbled and indistinguishable. With Ethernet this is known as a collision. In the CSMA/CD method, CD stands for Collision Detection. If a collision is detected by a transmitting station(s) the rule states: stop transmitting immediately, transmit a jamming signal to inform all other stations to stop, then wait a random period (binary exponential backoff) and re-transmit. Unfortunately, as the quantity of stations increases so does the amount of collisions. This causes the average access time to increase proportionally. This is referred to in the industry as network congestion.
3. Fortunately, there are several ways to alleviate network congestion. One way is that the entire network can be upgraded to Fast Ethernet (100 Mbps) which represents a 10 fold increase in transmission speed. This, however requires upgrading of all components and can be rather expensive. Another approach is to add an Ethernet Switch.
Ethernet is an asynchronous Carrier Sense Multiple Access with Collision Detect (CSMA/CD) protocol/interface, with a payload size of 46-1500 octets. With data rates of tens to hundreds of megabits/second, it is generally not well suited for low-power applications. However, with ubiquitous deployment, internet connectivity, high data rates and limitless range expansibility, Ethernet can accommodate nearly all wired communications requirements. Common applications include:
1. Remote sensing and monitoring;
2. Remote command, control and firmware updating;
3. Bulk data transfer;
4. Live streaming audio, video and media;
5. Public data acquisition (date/time, stock quotes, news releases, etc.
As Ethernet network is widely used, many related products have occured, such as Ethernet cable, Ethernet Media Converter, Ethernet to serial converter and so on.