| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical phase compensation device, an optical receiver, a network management system, and an optical phase compensation method for appropriately compensating an optical phase error.SOLUTION: An optical phase compensation device is the one of optical receivers of intradyne detection systems, and comprises: a first optical phase error calculation part which calculates an optical phase error by performing averaging by targeting a signal symbol number L of a main signal to be input; a second optical phase error calculation part which calculates the optical phase error by performing the averaging by targeting a signal symbol number M(<L) of the main signal; and a subtraction part which subtracts difference between calculation results of the first optical phase error calculation part and the second optical phase error calculation part or an increase/decrease value of the difference from an optical phase component of the main signal. |
