| 摘要 |
An optical receiving apparatus has a route change detector for detecting occurrence of a route change of received signal light, a memory for beforehand storing optimum dispersion compensation quantity for the received signal light before and after the route change, a tunable dispersion compensator for compensating dispersion of the received signal light, and a controller for controlling a dispersion compensation quantity used by the tunable dispersion compensator according to the optimum dispersion compensation quantity for the received signal light after the route change, which is beforehand stored in the memory, when the route change detector detects occurrence of the route change. The dispersion compensation quantity can be optimized at high-speed for each of optical transmission routes of the received signal light.
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