Time and Wavelength Division Multiplexed Passive Optical Network (TWDM-PON) is a multiplexing technique for optical access networks that combines time division multiplexing(TDM) and wavelength division multiplexing(WDM).
Current passive optical networks (PON) are used to provide Fiber to the Home ( FTTH) to customers in residential and commercial areas or to implement Mobile Backhauls. An upgrade to TWDM-PON offers higher data rates and better flexibility. TWDM-PON transmits at 3 to 8 different wavelengths. The bridgeable distance is between 20 km and 60 km.