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. 28, 2023
Filed:
Apr. 21, 2020
Applicant:
Fujitsu Optical Components Limited, Kawasaki, JP;
Inventor:
Nami Yasuoka, Kawasaki, JP;
Assignee:
FUJITSU OPTICAL COMPONENTS LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/052 (2014.01); H01L 31/0525 (2014.01); H01L 31/0745 (2012.01); H01L 31/054 (2014.01); H01L 23/34 (2006.01);
U.S. Cl.
CPC ...
H01L 31/0525 (2013.01); H01L 23/345 (2013.01); H01L 31/054 (2014.12); H01L 31/0745 (2013.01);
Abstract
An optical semiconductor element includes an optical receiver including a first semiconductor layer, a heater for heating the first semiconductor layer; and a monitor. A first semiconductor layer that absorbs light and generates electric carriers; a heater for heating the first semiconductor layer; and a monitor including a second semiconductor layer in which dark current is changed by heat generated by the heater.