| 摘要 |
<p>An optical transmitter for carrying out an optical modulation based on a data signal to be transmitted, thereby generating a transmission light signal, includes an optical phase modulating section for carrying out an optical phase modulation over an output light of a light source based on a data signal, an optical pulse modulating section for carrying out an optical pulse modulation over an output light of the optical phase modulating section based on a clock signal and outputting the light as an optical transmission output, an extending section for extending a code transition time of the data signal and applying the data signal to the optical phase modulating section, and a phase control section for modulating a phase shift amount of the data signal or the clock signal with a dither signal and carrying out a synchronous detection over the optical transmission output, and controlling the phase shift amount with a synchronous detection signal.</p> |
