Conley Rose, P.C.
Wavelength stabilization and locking for colorless dense wavelength division multiplexing transmitters
An apparatus comprising a laser transmitter having a first side and a second side, a filter coupled to the first side, a detector coupled to the second side, and a temperature controller coupled to the laser transmitter and the detector. Also disclosed is an apparatus comprising at least one processor configured to implement a method comprising receiving a photocurrent of a backward light from a laser, determining a wavelength shift offset between a wavelength of the output light and a filter transmission peak, and adjusting a temperature of the laser to substantially reduce the wavelength shift and align the wavelength of the output light with the filter transmission peak.
Futurewei Technologies, Inc.
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Jizhong Yang Jing Yu Sheng
Liu Wen Bai