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. 25, 2001
Filed:
Jul. 16, 1998
Applicant:
Inventors:
Naoki Nishiyama, Yokohama, JP;
Mitsuaki Nishie, Yokohama, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/006 ;
U.S. Cl.
CPC ...
H04B 1/006 ;
Abstract
This optical module comprises a photodiode,, a current mirror circuit,having two parallel lines, one of the lines being connected to the photodiode,, and a transimpedance amplifier,connected to the photodiode,. Since the current mirror circuit,is provided, the photocurrent from the line flows into the photodiode,and amplified by the transimpedance amplifier,. This photocurrent is observed as a current flowing out of the other line of the current mirror circuit