CPC H04B 10/2525 (2013.01) [H04B 10/2507 (2013.01); H04B 10/2513 (2013.01); H04B 10/6161 (2013.01)] | 7 Claims |
1. A wavelength dispersion compensating apparatus, comprising:
a signal light generating unit which generates, from predetermined signal light, signal light having a phase correlation centered on a degenerate frequency of a phase sensitive amplifier;
a dispersion compensation transmission path which compensates for a wavelength dispersion of the predetermined signal light included in the signal light;
a filter which compensates for a residual wavelength dispersion after compensation by the dispersion compensation transmission path of the predetermined signal light included in the signal light;
a phase sensitive amplifier which amplifies the signal light input via the dispersion compensation transmission path and the filter;
a residual wavelength dispersion calculating unit which calculates a residual wavelength dispersion amount based on a measurement result of output light amplified by the phase sensitive amplifier; and
a filter control unit which controls the filter so as to add a wavelength dispersion that cancels out the calculated residual wavelength dispersion amount to the predetermined signal light.
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