The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2015
Filed:
Jun. 12, 2012
Naoya Wada, Koganei, JP;
Seitetsu Boku, Ageo, JP;
Hiroyuki Yamazaki, Ageo, JP;
Yusaku Tottori, Ageo, JP;
Naoya Wada, Koganei, JP;
Seitetsu Boku, Ageo, JP;
Hiroyuki Yamazaki, Ageo, JP;
Yusaku Tottori, Ageo, JP;
National Institute of Information and Communications Technology, Tokyo, JP;
Optoquest Co., Ltd., Saitama, JP;
Abstract
A wavelength selective polarization controller capable of controlling the polarization plane of optical wavelength multiplexing signals, for each wavelength component, and which does not generate time lag between each component is provided. This wavelength selective polarization controller has: a telecentric optical system to which optical wavelength multiplexing signals are incident; a polarization controller that controls the polarization plane of light output from the telecentric optical system; and an output optical system for outputting to an optical path output from the polarization controller. The telecentric optical system has: a first diffraction grating to which the optical wavelength multiplexing signals are incident; and a first condenser that condenses the optical wavelength multiplexing signals that have passed through the diffraction grating. The polarization controller has a plurality of phase modulators.