| 摘要 |
PURPOSE:To provide an optical receiver capable of compensating a waveform distortion generated in a reception waveform after a transmission is performed in a microwave area by discriminating sidebands existing on the both sides with the carrier wave of optical signals to be received as a center, receiving the sidebands respectively and converting them to electric signals, and having an advantage that the waveform distortion can be adaptively compensated since the characteristic of a waveform equalizer can be made variable. CONSTITUTION:An optical signal 100 to be received is separated into the upper sideband components and lower sideband components of light carrier wave frequency of the frequency components had by the optical signal in an optical frequency area by an optical filter 1. The upper sideband components are converted into electric signals by a photoelectric conversion element 2. The output is equalized by a waveform equalizer 4 and an equalization signal 200 is obtained as a result. By detecting the output of the photoelectric converter 2, the frequency passing characteristic of the optical filter 1 is controlled via a wavelength control circuit 7. |
