Patent ID: 8452193
Filing Date: 2013-05-28
Classification: H04B,H04J

Abstract:
1. An optical receiver to receive a wavelength channel signal light separated out of a wavelength division multiplexed signal light including a plurality of wavelength channel signal lights, the optical receiver comprising: an optical amplifier to amplify the wavelength channel signal light separated out from the wavelength division multiplexed signal light; a cyclic filter having a transmission wavelength characteristic in which transmittance is cyclically changed to correspond with a channel distance of the wavelength channel signal lights in the wavelength division multiplexed signal light, the cyclic filter passing the amplified wavelength channel signal light separated out from the wavelength division multiplexed signal light; and a demodulator operably connected to the cyclic filter to demodulate the wavelength channel signal light output from the cyclic filter into an electrical signal.