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:
Jul. 14, 2009
Filed:
Mar. 10, 2008
Masaki Funabashi, Tokyo, JP;
Junichi Hasegawa, Tokyo, JP;
Takeshi Akutsu, Tokyo, JP;
Kazutaka Nara, Tokyo, JP;
Noriyuki Yokouchi, Tokyo, JP;
Masaki Funabashi, Tokyo, JP;
Junichi Hasegawa, Tokyo, JP;
Takeshi Akutsu, Tokyo, JP;
Kazutaka Nara, Tokyo, JP;
Noriyuki Yokouchi, Tokyo, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Abstract
An optical integrated circuitaccording to the present invention includes a planar lightwave circuit, and a semiconductor element, which are fixed at one contact surface. A semiconductor optical amplifier (SOA)is formed on a semiconductor substrate. A semiconductor waveguideand a semiconductor waveguideare formed on an input side and an output side of SOA, respectively. The semiconductor waveguidehas a turnaround portionturned around on the semiconductor substrate. Respective ends of the optical waveguidesandon a PLC platformand respective ends of semiconductor waveguidesandare optically coupled with each other at the contact surface