Patent ID: 8798483
Filing Date: 2014-08-05
Classification: H04B

Abstract:
1. An apparatus for adaptive dispersion compensation which is used for adaptive dispersion compensation in an optical communication system, comprising a receiver with an electric adaptive dispersion compensator, a control logic unit and a coarse-grain tunable dispersion compensator, wherein, the receiver with the electric adaptive dispersion compensator is configured to perform electric dispersion compensation for each single-channel electric signal obtained by photoelectric conversion and linear amplification of input optical signals; the control logic unit is configured to determine whether a performance parameter value of the receiver, after the electric dispersion compensation has been performed, is deteriorated to the extent that optical dispersion compensation tuning is needed, and if the performance parameter value is deteriorated to the extent that the optical dispersion compensation tuning is needed, control the coarse-grain tunable dispersion compensator through feedback based on said performance parameter value to perform optical dispersion compensation adjustment for the input optical signals; and the coarse-grain tunable dispersion compensator is configured to perform optical dispersion compensation for the input optical signals based on the feedback controls of the control logic unit and to send to the receiver the input optical signals for which the optical dispersion compensation has been performed; wherein the control logic unit is further configured to perform the following steps for multi-channel optical signals: