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:
Jun. 17, 1986
Filed:
May. 20, 1983
Applicant:
Inventors:
Stephen Wright, Finsbury Park, GB;
Philip R Couch, Roanoke, VA (US);
Assignee:
International Standard Electric Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
455619 ;
Abstract
A coherent optical receiver for an input optical signal including a local oscillator source of coherent optical signal a single beam splitter/combiner to which both the input and local oscillator signals are applied to produce two substantially identical combined optical signals, a pair of substantially identical photodetectors electrically connected in series, each photodetector receiving one of the combined optical signals, and an output amplifier the input of which is connected to the series connection between the photodetectors.