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. 23, 1986
Filed:
Aug. 22, 1983
Applicant:
Inventors:
Joe C Campbell, Middletown, NJ (US);
Andrew G Dentai, Atlantic Highlands, NJ (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
357 30 ; 357 13 ; 357 16 ;
Abstract
High speed, high quantum efficiency, low dark current, and avalanche gain greater than 10 are exhibited by a long wavelength avalanche photodetector including in succession a terminal region of p-type indium phosphide (InP) a multiplication region comprising first and second layers of n-type indium phosphide (InP), a grading layer of n-type indium gallium arsenide phosphide (InGaAsP), and an absorption region of n-type indium gallium arsenide (InGaAs).