WAVELENGTH DIVISION MULTIPLEXED PASSIVE OPTICAL NETWORK WITH WAVELENGTH TRACKING APPARATUS AND METHOD FOR WAVELENGTH TRACKING THEREOF

摘要

The present invention is a wavelength having a wavelength seeker division multiplexing passive optical network and its wavelength tracking method relates to. ; wavelength tracking method of the present invention comprises a central station having a multiplexer that multiplexes a plurality of downstream transmission optical signal, the multiplexed downstream optical signals transmitted by the central office for each channel by the demultiplexing In the wavelength division multiplexing comprising a base station having an area for outputting demultiplexed passive optical network, the wavelength of the light for tracking having a wavelength away as FSR (free spectral range) and an integral multiple of the wavelength of the downstream optical signal transmitted and transmitting to the local base station with the downlink transmission by multiplexing optical signals; Multiplexes the multiplexed light signal to the station, downstream transmission optical signal is received by channel and the process of sending back to the central base station is reflected light for tracking wavelength; Receiving an optical wavelength tracking for the received power is sent back to the central base station is characterized in that it comprises the step of adjusting the temperature of the multiplexer to be the maximum.