Control device, compensation device, program, and control method

A non-transitory storage medium having stored thereon a program which causes a computer to function as a control device which controls an operation of a compensation device which compensates for birefringence and/or polarization mode dispersion, which is received by signal light having propagated through an optical transmission line, by digital signal processing using a finite impulse response filter, the program causing the computer to function as:

• the control device receiving a detection signal which is a signal indicating a detection result of a detection device which optically detects polarization fluctuation in the optical transmission line;
• and
• the control device setting a setting regarding an update frequency or an update interval of the number of taps of the finite impulse response filter or an update frequency or an update interval of a tap coefficient of the finite impulse response filter, based on the detection result of the detection device.

A control method for controlling an operation of a compensation device which compensates for birefringence and/or polarization mode dispersion, which is received by signal light having propagated through an optical transmission line, by digital signal processing using a finite impulse response filter, the control method comprising:

• receiving a detection signal which is a signal indicating a detection result of a detection device which optically detects polarization fluctuation in the optical transmission line;
• and
• setting by deciding a setting regarding an update frequency or an update interval of the number of taps of the finite impulse response filter or an update frequency or an update interval of a tap coefficient of the finite impulse response filter, based on the detection result of the detection device.