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. 30, 2010
Filed:
Aug. 01, 2008
Masayuki Suehiro, Musashino, JP;
Shinji Iio, Musashino, JP;
Shinichi Nakajima, Musashino, JP;
Yoshiyuki Asano, Musashino, JP;
Morio Wada, Musashino, JP;
Masayuki Suehiro, Musashino, JP;
Shinji Iio, Musashino, JP;
Shinichi Nakajima, Musashino, JP;
Yoshiyuki Asano, Musashino, JP;
Morio Wada, Musashino, JP;
Yokogawa Electric Corporation, Tokyo, JP;
Abstract
A semiconductor optical switch may include an optical waveguide, a first electrode, and a first reflector. The optical waveguide may include a branching point, a first incoming path and first and second outgoing paths. The first electrode is provided at the branching point to give carrier injection into the branching point to allow that the branching point reflects an optical signal that is propagating through the first incoming path so that the reflected optical signal propagates through the second outgoing path. The first electrode may give no carrier injection into the branching point to allow that the branching point allows the optical signal to transmit through the branching point and propagate through the first outgoing path. The first reflector is provided on the first outgoing path. The first reflector reflects a leakage of light that has propagated from the branching point.