H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 14/02 (2006.01) H04B 10/24 (2006.01) H04Q 11/00 (2006.01)
Patent
CA 2172431
In an optical communication system for performing wavelength division multiplex communication on an optical transmission path, an output light wavelength control is performed as follows in an optical transmitter. A wavelength of light on the optical transmission path is detected so as to search for an unoccupied space, in which output light from the self optical transmitter does not cause an interference with another light on the optical transmission path. The wavelength of the output light from the self optical transmitter is controlled so as to be a wavelength falling within the unoccupied space. A wavelength of another light which is adjacent to the wavelength of the output light from the self optical transmitter on one of the longer and shorter wavelength side along a wavelength axis is set as a reference side wavelength, so that the wavelength of the output light is controlled to set a wavelength interval between the reference side wavelength and the wavelength of the output light from the self optical transmitter to be close to a predetermined first wavelength interval or to maintain the wavelength interval to have a value in the neighborhood of the predetermined first wavelength interval.
Canon Kabushiki Kaisha
Ridout & Maybee Llp
LandOfFree
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