Apparatus for providing broadcasting service through overlay structure in WDM-PON

摘要

Provided is an apparatus for providing a broadcasting service through an overlay structure in a WDM-PON. The apparatus comprises: a first grating section receiving a multiplexed signal of N data communication optical wavelength signals and a broadcasting optical wavelength signal, which have separate wavelengths, transmitted from an optical line terminal (OLT) and wavelength-demultiplexing the multiplexed signal; a mirror reflecting the broadcasting optical wavelength signal wavelength-demultiplexed by the first grating section; and a second grating section receiving the reflected broadcasting optical wavelength signal and splitting it to all subscriber ports.