1GB Ethernet SFP Vs DWDM VS CWDM Transceiver

[jemekeren]

Hello there. what is the difference between them. i usually use the 1 Gb Ether SFP LX/LH. so when should i choose DWDM and CWDM? what is the benefit? tq all.

[Tom Randstrom · Accepted solution]

DWDM or CWDM is used for links where fiber cable is limited. Instead of adding or using more fiber cables between facilities, you can take an existing pair of fibers and create many virtual fibers. xWDM uses wavelengths of light to allow many signals to be carried over a single fiber strand.

General Overview

http://en.wikipedia.org/wiki/Wavelength-division_multiplexing