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Automatic Wavelength Allocation Method Using Rayleigh Backscattering for a WDM-PON with Tunable Lasers

Publication Date : 10/07/2015



Author(s) :

Tejas U. Mahagaonkar , Savita R. Bhosale.


Conference Name :
4th International Conference on Recent Trends in Engineering & Technology(ICRTET-2015) July 2-4,2015 Organized by SNJB's KBJ College of Engineering,Chandwad,Nashik,Maharashtra,India



Abstract :

The Wavelength Division Multiplexing Passive Optical Network (WDM-PON) is considered to be a key technology to meet future bandwidth (THz) demands because it supports unlimited bandwidth, high security, and protocol transparency. One of the most important issues for the WDM-PON is colorless or color-free optical sources that enable interchangeable and plug-andplayable optical network units. Various optical sources have been investigated in this requirement. Among the proposed optical sources, a tunable laser has many advantages such as very high-speed and long-reach transmission. In this research work a wavelength detection algorithm is proposed with a wavelength assignment table. An optical spectrum analyzer and a tunable filter employed to measure the wavelength. A wavelength stabilization method uses a Distributed Bragg Reflector (DBR). The intrinsic Rayleigh backscattering in the transmission fiber is used to identify and lock the wavelength of the tunable laser to the desired wavelength. The wavelength allocation by using backscattered power monitoring is proposed in this research work.


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