Dispersion compensation quantity setting method, receiving terminal station, and wavelength-multiplexing optical transmission system

A dispersion compensation quantity setting method for use in a wavelength-multiplexing optical transmission system including a transmitting terminal station and a receiving terminal station and made to transmit wavelength-multiplexed light, said method comprising:

• a transmission step in which said transmitting terminal station transmits constant-intensity light and intensity-modulated light having a wavelength different from a wavelength of said constant-intensity light;
• a detection step in which said receiving terminal station detects a physical quantity arising from an amplitude variation of said constant-intensity light transmitted in said transmission step;
• and
• a dispersion quantity setting step in which said receiving terminal station sets a reception dispersion compensation quantity on the basis of said physical quantity detected in said detection step.

A receiving terminal station for use in a wavelength-multiplexing optical transmission system including a transmitting terminal station and said receiving terminal station and made to transmit wavelength-multiplexed light, said receiving terminal station comprising:

• a light-reception processing unit for conducting light-reception processing on constant-intensity light and intensity-modulated light having a wavelength different from a wavelength of said constant-intensity light, transmitted from said transmitting terminal station;
• a detecting unit for detecting a physical quantity arising from an amplitude variation of said constant-intensity light of said constant-intensity light and said intensity-modulated light received in said light-reception processing unit;
• and
• a dispersion compensation quantity setting unit for setting a reception dispersion compensation quantity on the basis of said physical quantity detected in said detecting unit.