Video + Audio Multiplexer

CWDM each wavelength typically supports up to 2.5Gbps and can be extended to 10Gbps support. CWDM is limited to 16 wavelengths and are usually implemented in networks of up to 80 km from the optical amplifiers can’t be used due to the large separation between channels. CWDM uses a wide range and can accommodate eight channels. This wide channel spacing allows the use of optical moderately priced, but limited capacity. CWDM is typically used for smaller capacity lower cost applications, short distance where the cost is the most important decision criterion.

The CWDM mux /demux (or CWDM multiplexer /demultiplexer) is often a plug- and-play flexible network solution that helps insurers and business companies to implement affordable point or base ring denote WDM optical networks. CWDM Mux/demux is perfectly created to transport PDH, SDH / SONET, Ethernet services over WDM, CWDM and DWDM optical front line metro and access networks. 

CWDM multiplexer modules can be found in configurations 4, 8 and 16 channels. These modules passively multiplexing the optical signals output from 4 too many electronic products , sends them over one optical fiber and then de- multiplexing the signal into separate and distinct for gadgets input signals across the opposite end of the connection optical fiber.

CWDM solutions typically provide 8 wavelengths enable the transport capacity of eight customer interfaces through the same fiber. However, the relatively large spacing between the CWDM wavelengths allows expansion of the CWDM network with an additional of 44 wavelengths with a spacing of 100GHz using DWDM technology, thus increasing the capacity of existing infrastructure and using the same equipment as part of the integrated solution.

DWDM is a technology which allows high capacity throughput over longer distances typically ranging between 44-88 channels / wavelengths and transferring data rates from 100Mbps up to 100Gbps per wavelength. Packet multiplexer 16 channels or more channels in the spectrum of a narrow window near the 1550nm local attenuation minimum. Decreasing channel separation requires the use of precise and expensive optical, but allows for significantly more scalability. DWDM systems typically provide 1-44 channel capacity with some new systems, offering up to 80-160 channels. DWDM is typically used where high capacity over one fiber limited or where it is cost prohibitive to deploy more fiber resource is needed.

DWDM multiplexer/demultiplexer modules are made to multiplex multiple DWDM channels in one or two fibers. Based on CWDM unit Mux/Demux type, with optional expansion, can transmit and receive as much as 4, 8, 16 or 32 connections of different standards, rates or data protocols over a single link optical fiber without disturbing each other. Ultimately, the choice of using CWDM or DWDM is a difficult decision; we should first understand the difference between them clearly.

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