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:
Jan. 08, 1980
Filed:
Nov. 14, 1977
Applicant:
Inventor:
Martin Chown, Harlow, GB;
Assignee:
International Standard Electric Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04J / ; H04J / ; H04J / ;
U.S. Cl.
CPC ...
179 / ; 250199 ; 350 9615 ;
Abstract
Optical sensors may be arranged to give transmission or reflection of signals along optical fibers depending on the quantity to be measured. The outputs of several sensors may be simply multiplexed onto a single fiber (or pair) by putting a different delay line in series with each sensor. Similarly optical filters can be used separately or combined with the delay lines and/or space division multiplexing can be used to increase the number of sensors. Local frequency modulation of the sensors offer an additional means of multiplexing.