Patent ID: 6266179
Filing Date: 2001-07-24
Classification: G02F,H04B

Abstract:
An optical transmission apparatus comprising:a signal light generator to generate a signal light which has been modulated in accordance with a transmission signal,a probe light generator to generate a probe light of an optical frequency different from the optical frequency of the signal light generated by said signal light generator,a four wave mixing generator in which the signal light output from said signal light generator and the probe light output from said probe light generator are injected into a medium having a nonlinear optical effect to generate and output a plurality of signal lights by four wave mixing,a signal light selector to select any one of the plurality of signal lights output from said four wave mixing generator in accordance with the wavelength dispersion characteristics of the transmission path and then output the selected signal light to said transmission path, the output signal light having a wavelength corresponding to that of the selected signal light, andan optical frequency controller to control at least one of the optical frequency of the signal light generated by said signal light generator and the optical frequency of the probe light generated by said probe light generator.