Patent ID: 6970613
Filing Date: 2005-11-29
Classification: H04B,H04J

Abstract:
1. An optical receiver, comprising: an optical input port which receives incoming wavelength-division multiplexed (WDM) light signals; transmittable-wavelength-variable filtering means which allows or permits, a light signal in a predetermined transmittable wavelength bandwidth to pass therethrough, out of the WDM light signals input from said optical input port, the light signal to be selectively received by the optical receiver, wherein a central wavelength of said transmittable wavelength bandwidth being a desired wavelength; an optical output port which outputs the remaining light signals out of the WDM light signals input from said optical input port, at wavelengths which do not pass through said transmittable-wavelength-variable filtering means; and control means which controls the central wavelength of said transmittable-wavelength-variable filtering means in such a manner that the level of the light signal passing through said transmittable-wavelength-variable filtering means is the maximum.