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:
Dec. 07, 2010
Filed:
Mar. 27, 2007
Masaji Noguchi, Kawasaki, JP;
Tomohiro Ueno, Kawasaki, JP;
Yutaka Kai, Kawasaki, JP;
Setsuo Yoshida, Kawasaki, JP;
Masaji Noguchi, Kawasaki, JP;
Tomohiro Ueno, Kawasaki, JP;
Yutaka Kai, Kawasaki, JP;
Setsuo Yoshida, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A driving circuit of a semiconductor optical amplifier type gate switch constituting a matrix optical switch is provided with an operation amplifier into which a driving signal is input and from which a current corresponding to the driving signal is output, an inductance element provided at an output terminal of the operation amplifier, and a circuit composed of a diode element and a resistor element connected in parallel and provided between the inductance element and the semiconductor optical amplifier.