WDM PON protection scheme using a dual port arrayed waveguide grating (AWG)
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United States of America Patent
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Nov 6, 2012
Grant Date -
Dec 3, 2009
app pub date -
Dec 22, 2008
filing date -
May 27, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A Wavelength Division Multiplexed Passive Optical Network (WDM-PON) includes an Optical Line Terminal (OLT) including a first Arrayed Waveguide Grating (AWG) MUX/DEMUX, and a remote node including a second AWG MUX/DEMUX. Each AWG MUX/DEMUX has at least two input ports for receiving a respective wavelength division multiplexed optical signal, and a plurality of output ports. Each output port of the Optical Line Terminal AWG MUX/DEMUX is coupled to a respective transceiver of the OLT. Each output port of the remote node AWG MUX/DEMUX is coupled to a respective PON having at least one optical network terminal (ONT). Respective first and second optical paths are coupled between corresponding input ports of the first and second AWG MUX/DEMUXs. Means are provided for sourcing seed light of the WDM-PON into a selected one the first and second optical paths.
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