PHASE CONJUGATE LIGHT GENERATOR AND OPTICAL COMMUNICATION SYSTEM, AND PHASE CONJUGATE LIGHT GENERATION METHOD

摘要

To provide a phase conjugate light generator capable of adjusting a phase relation of a modulation signal to be applied to a pumping light to a preferable condition by a simple configuration, and an optical communication system and a phase conjugate light generation method.SOLUTION: The phase conjugate light generator includes: a first pumping light source for outputting first pumping light phase-modulated by a first modulation signal; a second pumping light source for outputting second pumping light phase-modulated by a second modulation signal; a test light source for outputting testing light; a phase conjugate light generating part for receiving the first pumping light, the second pumping light, the testing light and signal light and generating phase conjugate light of the signal light and testing phase conjugate light; a wavelength variation signal generating part for generating a wavelength variation signal indicating the wavelength variation of the testing phase conjugate light based on the testing phase conjugate light; a phase error detector for outputting a phase error signal including phase error information based on the wavelength variation signal; and phase adjusting means for adjusting a phase of the first modulation signal or the second modulation signal to reduce the phase error based on the phase error signal.SELECTED DRAWING: Figure 1