Patent ID: 8306430
Filing Date: 2012-11-06
Classification: G02B

Abstract:
1. A dispersion compensating apparatus that compensates waveform degradation that occurs in an optical signal due to a dispersion characteristic of an optical transmission line by using an optical component that modifies a refractive index thereof with a change in one of temperature and stress applied thereon and changes a transmission wavelength characteristic of the optical signal, the dispersion compensating apparatus comprising: a reference value information recording unit that records therein reference value information indicating a plurality of reference values each corresponds to different characteristics of the optical signal; a reference value identifying unit that identifies a reference value corresponding to a characteristic of an optical signal whose wavelength is to be compensated; a transmission center wavelength identifying unit sets a reference position lower than a peak of the transmission characteristic data of the optical component by the identified reference value, and identifies a transmission center wavelength based on the set reference position; and a refractive index adjusting unit that adjusts the refractive index of the optical component in accordance with the identified transmission center wavelength.