Wavelength Division Multiplexing (WDM) works by simultaneously combining and transmitting multiple signals at different wavelengths in the same fiber. And then separating them back out again at the other end of the fiber.
A key advantage of WDM is that it is protocol and bit-rate independent. WDM-based networks can transmit data in IP, ATM, SONET/SDH, and Ethernet, and handle bit rates between 100 Mb/s and 40 Gb/s. Therefore, WDM-based networks can carry different types of traffic at different speeds over an optical channel. It creates a less costly method of quick response to customers bandwidth demands and protocol changes.
The mainly products of WDM technology of HTFuture are CWDM and DWDM.