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:
Sep. 21, 2004
Filed:
Jun. 07, 2002
Applicant:
Inventor:
William R. Clark, Tyngsboro, MA (US);
Assignee:
Corning Lasertron, Inc., Bedford, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 3/100 ;
U.S. Cl.
CPC ...
H01L 3/100 ;
Abstract
An avalanche photodiode (APD) includes an absorption layer above the multiplication layer, where the thickness of the multiplication layer is defined through a growth process. The APD can also have a third-terminal, or peripheral ring terminal, for collecting charge carriers generated outside the optically-active region of the device. Undesirable dark current can thus be better managed during the life of the device. The three-terminal design may also be utilized in other photodetectors, including PIN diodes.