Using CWDM Technology To Construct Cost-Effective Fiber Networks

The utilization of fiber optic cables for communication has opened up gates for communication multiplexing technologies that increase the capabilities at minimum costs. Coarse wavelength division multiplexing (CWDM) modulates different wavelength laser beams with multiple signals. Essentially, what this means is maximized utilization of a single fiber optic to deliver and get a large number of signals, minimizing costs for telecom companies. Companies simply employ the right optical amplifiers, multiplexers and demultiplexers to boost capacity from the fiber optic using CWDM technology.

In CWDM technology, it comes with an increase in channel space. This means requirement of less sophisticated and less costly transceiver devices. Operating in the same window of 1550 nm and making use of OH-free silica fibers, maximum efficiencies are achieved in channels 31, 49, 51, 53, 55, 57, 59 and 61. The channels are spaced 20 nm apart. DWDM spaces them 0.4 nm apart. Less precision optics minimizing cost, uncooled lasers with lower maintenance requirements can therefore be used in CWDM devices, operating in the region of 1470, 1490, 1510, 1530, 1550, 1570, 1590 and 1660nm. 18 different channels can be used with wavelengths as much as 1270 nm. For instance, a 8 channel CWDM includes 8 different CWDM channels. In addition to being economical, power consumption for laser devices used in CWDM technology is also far less.

CWDM signals cannot be transmitted long term but are ideal for applications inside a range of 60 km for example in a city as well as for cable tv networks allowing upstream and downstream signals. CWDM product is usually considered a low-cost alternative which is now widely used to replace the DWDM system. Due to the benefit of CWDM technology uses low cost lasers that don't need cooling and low-cost passive filter. Moreover, if using CWDM technology, we can use low-cost and smaller transceivers such as CWDM 10Gig SFP+. However, because of relatively large CWDM channel spacing, so the system will reduce the number of available wavelengths, this also limits the system's transmission capacity.

Related technologies are dense wavelength division multiplexing (DWDM) and conventional WDM. Conventional WDM use the 3rd transmission window with a wavelength of 1550nm, accommodating as much as 8 channels. DWDM is identical however with a higher density channel. Systems could use 40 channels, each at 100 GHz spacing or 80 channels spaced 50 GHz apart. A technology, the ultra dense WDM is capable of doing working in a spacing of just 12.5 GHz, allowing more channels. However, DWDM and WDM are much more expensive in contrast to CWDM.

A quantity of manufacturers offer all related CWDM multiplexer, demultiplexer and optical amplifier. Networking solution providers would be the right individuals to seek guidance for use of CWDM, DWDM or WDM technology. They perform entire installation and commissioning from the right, integrated devices for error-free high speed, high data transmissions over fiber optic cables. Cost and gratifaction optimized CWDM solutions with built-in expansion capabilities can be found from reliable and trusted online network solution companies. Choose the best one with years of experience and technological expertise to provide the best CWDM solution and use the CWDM technology to construct your cost-effective fiber optic networks.

Multiplexer and Demultiplexer Based on CWDM

Before the introduction of CWDM multiplexer, it is necessary to mention the CWDM technology.
Originally, the term “coarse wavelength division multiplexing” (CWDM) was fairly generic, and meant a number of different things. In general, these things shared the fact that the choice of channel spacings and frequency stability was such that erbium-doped fiber amplifier (EDFA) could not be utilized. Prior to the relatively recent ITU standardization of the term, one common meaning for CWDM meant two (or possibly more) signals multiplexed onto a single fiber, where one signal was in the 1550 nm band, and the other in the 1310 nm band.
CWDM multiplexer is based on CWDM technology. It is a device to allow multiple optical signals at different wavelengths to pass through a single optical fiber strand. For convenience, we usually used “Mux” instead of “multiplexer” , and “Demux” instead of “deultiplexer”.
Typically, Multiplexer and Deultiplexer (Mux and Demux) are integrated in a entirety. CWDM Mux/Demux modules have 2/4/8/16/18 channels commonly, while 5/9 channels uncommonly. In FiberStore, we supply all channel CWDM Mux and Demux. Three single fiber or dual fiber connection for CWDM Mux/Demux are available. Our standard CWDM Mux/Demux package types are Plastic ABS module cassette, 19″ rack mountable box or LGX box. No matter what kind of connectors, like FC, ST, SC, LC, etc., all are available here, and we can also mix connectors on one device.
To know more about the CWDM Mux products, let me introduce one of the CWDM Mux/Demux modules to you. Here is a 18 Channels CWDM Mux and Demux by dual fiber with LGX Metal Box.
Key Features
1.Flexibility and little LGX Standard Metal Box configuration
2.Mux and Demux combined in one LGX Metal Box
3.Compliant to ITU-T G.694.2 CWDM standard
4.Accepts any data rate and any protocol on any port up to 10 Gbps, also 40 Gbps (DPSK, DQPSK) and 100 Gbps (DPQPSK)
5.Fully transparent at all data rates and protocols from T1 to 40 Gbps Completely passive, no power supply needed
6.Simple to install, requires no configuration or maintenance
8.Low-cost transceivers applicable, existing equipment can still be used ISO 9001 manufacturing facility
9.Lifetime Product Warranty
Applications

All Enterprises and Carrier with Fiber Optic Infrastructure Transmit additional applications via existing lines Connect buildings to CWDM campus ring Connect Field offices to central office Ideal solution for metro-core, metro-access and enterprises

Sample pictures



Article Source : http://www.fiberstore.com/

DWDM mux and CWDM multiplexer

As the DWDM mux/demux & CWDM mux/demux goods are playing an even more and more important role inside the data transmission field, today organic beef focus on the key options that come with DWDM mux and CWDM multiplexer first.As everybody knows, DWDM which represents Dense Wavelength Division Multiplexing was created to multiplex DWDM channels into one or two fibers. This sort of products could make the optimum usage of your existing fiber optic infrastructure in an ideal way. It puts multiple signals together and sends them simultaneously along a fiber, simply with transmissions happening at different wavelengths, and also this turns an individual fiber to the virtual equal of a handful of fibers. It is really a good and also the most reasonable solution to date that will meet our increasing desires of large data transmissions. And also by using the impressive DWDM technique, it will transmit greater than 40 connections of numerous standards, data rates or protocols more than one common fiber optic link. For the DWDM products, the DWDM mux products combine several data signals into one for transporting on the single fiber as the DWDM demux (demulitplexers) separate the signals on the opposite end. Each signal reaches a different wavelength, they cooperate with each other perfectly.

The common configuration of DWDM mux is 4, 8, 16 and 32 channels. These DWDM modules passively multiplex the optical signal outputs from 4 or maybe more electronic devices, send on them an individual optical fiber and then de-multiplex the signals into separate, distinct signals for input into electronic devices in the opposite end with the fiber optic link.

The DWDM mux products always own these following features.
1.Low insertion loss and high isolation.
2.Simple to install, requires no configuration, and disassembles easily to clean.
3.Fully transparent at all data rates and protocols.
4.Completely passive, no power required, no cooling and so on.

And for the CWDM multiplexer, the core of CWDM Module application will be the passive mux/demux unit. The most popular configuration is 4 , 8 ,16 channels. Available in 19" Rack Mount or LGX module package. Optional wide band port for existing 1310nm or 1550nm port is available to multiplex using these CWDM Channels. As well as our CWDM Transceiver series or perhaps the wavelength converter series, the bandwidth with the fiber can be employed in the economical way. The CWDM multiplexer is always be employed to improve your fiber capacity easily and quickly.

As the very best Chinese fiber optic products supplier, FiberStore provides lots of this sort of products which are reliable and economical. If you may well not find it on our website (what we upload is the mux & demux inside a device), you can call us to customize it to suit your needs. For standalone multiplexers, it could increase dual fiber link capacity up to 18 channels and could be combined with a lot of the CWDM GBIC, SFP, XFP, X2, XINPAK, SFP modules. It's also super easy to make use of and install, and also have some common features because the DWDM mux. Now it's prepared to do the job, please do not hesitate to make contact with us. Thank you for visiting contact the FiberStore representatives for more information if you need good quality and cost-effective DWDM mux and CWDM multiplexer products.