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. 07, 2017
Filed:
Dec. 06, 2013
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Mitsumasa Nakajima, Atsugi, JP;
Keita Yamaguchi, Atsugi, JP;
Joji Yamaguchi, Atsugi, JP;
Yuzo Ishii, Atsugi, JP;
Koichi Hadama, Atsugi, JP;
Naru Nemoto, Atsugi, JP;
Etsu Hashimoto, Atsugi, JP;
Kazunori Seno, Atsugi, JP;
Kenya Suzuki, Atsugi, JP;
Yoshito Jin, Atsugi, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
An optical input/output device includes a phase modulator element and an optical element. The phase modulator element includes a plurality of pixels arranged in a matrix and is configured to change an optical phase of signal light by applying a driving signal corresponding to a phase pattern. The optical element is configured to convert a direction of exit of the signal light so as to irradiate each pixel with the signal light from the input port. A pattern generator unit includes superimposing means for superimposing a periodic phase pattern having a predetermined period in at least one direction in a plane of the phase modulator element, and means for controlling an amplitude of the periodic phase pattern. The signal light is diffracted to a position according to the period of the superimposed periodic phase pattern, so that light intensity of the signal light is dispersed.