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:
Oct. 03, 2006
Filed:
Jul. 29, 2004
Shinji Iio, Musashino, JP;
Masayuki Suehiro, Musashino, JP;
Shin-ichi Nakajima, Musashino, JP;
Yoshiyuki Asano, Musashino, JP;
Chie Sato, Musashino, JP;
Akira Miura, Musashino, JP;
Tsuyoshi Yakihara, Musashino, JP;
Shinji Kobayashi, Musashino, JP;
Sadaharu Oka, Musashino, JP;
Shinji Iio, Musashino, JP;
Masayuki Suehiro, Musashino, JP;
Shin-ichi Nakajima, Musashino, JP;
Yoshiyuki Asano, Musashino, JP;
Chie Sato, Musashino, JP;
Akira Miura, Musashino, JP;
Tsuyoshi Yakihara, Musashino, JP;
Shinji Kobayashi, Musashino, JP;
Sadaharu Oka, Musashino, JP;
Yokogawa Electric Corporation, Tokyo, JP;
Abstract
A matrix optical switch that can switch the transmission path of an optical signal without requiring a driving unit for each optical switch is realized. A matrix optical switch for switching a transmission path of an optical signal by connecting plural input sides and plural output sides, respectively, comprises: a semiconductor optical waveguide substrate; a photo mask choosing system for selecting and arranging one photo mask from plural photo masks each of which has printed thereon a pattern connecting plural input sides to plural output sides; and a light source for casting output light having larger energy than a band gap of the semiconductor optical waveguide substrate onto a photon injection area between the plural input sides and the plural output sides on the semiconductor optical waveguide substrate via the selected photo mask.