The present invention relates to the technical field of coherent optical modules. Disclosed are a method and a system for controlling IQ signal phase error, the method comprising the following steps: controlling the IQ signal phase error by adjusting the intensity coefficients of channels corresponding to I signal and Q signal, respectively. The present invention can reduce or even eliminate the quadrature angle phase error of IQ signals to improve the performance of the coherent optical communication system without providing a phase shifter or changing the original coherent optical communication system architecture.

Method and system for controlling iq signal phase error

The invention discloses an IQ signal phase error control method and system, and relates to the technical field of coherent optical modules, and the method comprises the following steps: achieving thecontrol of an IQ signal phase error through adjusting the intensity coefficient of a channel corresponding to an I-path signal and a Q-path signal. According to the method, a phase shifter is not needed, the orthogonal angle phase error of the IQ signal can be reduced or even eliminated under the condition that an original coherent optical communication system architecture is not changed, and theperformance of the coherent optical communication system is improved.

IQ signal phase error control method and system

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IQ signal phase error control method and system

Method and system for controlling iq signal phase error