WAVELENGTH-VARIABLE RECEIVER AND METHOD OF CONTROLLING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a wavelength-variable receiver that allows wavelength-variable operation at high speed, maximally exploits characteristics of each PD constituting the wavelength-variable receiver, and is excellent in minimum reception sensitivity.SOLUTION: A wavelength-variable receiver according to the present invention includes: a plurality of light-receiving circuits photo-electric-converting signal light having different wavelength channels; a driving voltage source supplying a driving voltage to the plurality of light-receiving circuits; and a control circuit changing the driving voltage of the driving voltage source when a wavelength channel of signal light to be received is changed.