| 摘要 |
In a wavelength-multiplexing communication system, an optical transmitter detects at least either one wavelength of a transmission wavelength of a self optical transmitter and a wavelength adjacent to the transmission wavelength of the self optical transmitter on a wavelength axis either on a longer wavelength side or on a shorter wavelength side than the transmission wavelength of the self optical transmitter by a wavelength-variable band-pass filter capable of changing a passing wavelength thereof, and controls the transmission wavelength of the self optical transmitter so that a wavelength spacing between the transmission wavelength of the self optical transmitter and the wavelength adjacent thereto may become a predetermined wavelength spacing. <IMAGE> |
