Patent ID: 8744263
Filing Date: 2014-06-03
Classification: H04B,H04J

Abstract:
1. A wavelength-multiplexed passive optical network (WDM-PON) comprising: an optical network termination (ONT) comprising an ONT controller and an optical port which has an ONT transmitter and an ONT receiver, where the ONT transmitter comprises an ONT laser and the ONT receiver comprises an ONT Signal detect function; at least one wavelength splitter; an optical line terminal (OLT) comprising an OLT controller and an optical port which has an OLT receiver and an OLT transmitter where the OLT transmitter comprises an OLT laser and a Laser shutdown function, wherein when the OLT controller deactivates the Laser shutdown function then the OLT laser is turned-on and provides an optical power which corresponds to a logical level 1 at the ONT Signal detect function, wherein when the OLT controller activates the Laser shutdown function then the OLT laser is turned-off and provides an optical power which corresponds to a logical level 0 at the ONT Signal detect function; the OLT controller activates and deactivates the Laser shutdown function in a predetermined sequence to generate laser set-up information; the at least one wavelength splitter transports the laser set-up information on a communications channel over an optical layer from the OLT to the ONT, where the communication channel was established by the Laser shutdown function and the ONT Signal detect function; the ONT controller monitors the ONT Signal detect function to detect the laser set-up information, and the ONT controller uses the laser set-up information to set-up the ONT laser.