Patent ID: 8982442
Filing Date: 2015-03-17
Classification: G02B,G02F

Abstract:
1. A wavelength selective polarization controller comprising: a telecentric optical system to which optical wavelength multiplexing signals are incident; a polarization controller that controls a polarization plane of light having been output from the telecentric optical system; and an output optical system for outputting an output from the polarization controller to an optical path, wherein the telecentric optical system includes a first diffraction grating to which optical wavelength multiplexing signals are incident, and a first condenser that condenses the optical wavelength multiplexing signals having passed through the diffraction grating, and transmits the optical wavelength multiplexing signals to the polarization controller in a state of being aligned from one wavelength to another in a single light beam, the polarization controller includes a plurality of phase modulators and controls polarization planes of the optical wavelength multiplexing signals, which are output from the telecentric optical system, for each wavelength component, and the output optical system includes a second condenser to which output light from the polarization controller is incident, and a second diffraction grating to which output light having passed through the second condenser is incident.