SIGNAL LIGHT PROCESSING APPARATUS, LIGHT TRANSMISSION APPARATUS, WAVELENGTH SELECTION SWITCH, WAVELENGTH DIVISION MULTIPLEXING TRANSMISSION SYSTEM, AND SIGNAL LIGHT PROCESSING METHOD

摘要

A signal light processing apparatus includes a first wavelength selection switch, a dispersion compensator, and a second wavelength selection switch. The first wavelength selection switch divides an input wavelength-multiplexed signal light into signal lights of each wavelength and outputs the signal lights from a first output port or a second output port in accordance with wavelengths of the divided signal lights. The dispersion compensator compensates dispersion compensation on the signal light output from the first output port by the first wavelength selection switch. The second wavelength selection switch combines the signal light on which dispersion compensation is compensated by the dispersion compensator and the signal light output from the second output port by the first wavelength selection switch.