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.

Date of Patent:
Mar. 25, 2014

Filed:

Mar. 25, 2013
Applicant:

The Board of Trustees of the Leland Stanford Junior University, Palo Alto, CA (US);

Inventors:

Michael J. F. Digonnet, Palo Alto, CA (US);

Shanhui Fan, Stanford, CA (US);

Seth Lloyd, Stanford, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 19/72 (2006.01);
U.S. Cl.
CPC ...
Abstract

An optical sensor, a method of configuring an optical sensor, and a method of using an optical sensor are provided. The optical sensor includes an optical loop having a length and a laser source optically coupled to the loop. The laser source has a coherence length. Light from the source is transmitted to the loop as a first signal and a second signal counterpropagating along the loop. The optical paths of the first signal and the second signal are substantially reciprocal with one another and the first signal and the second signal are combined together after counterpropagating through the loop to generate a third signal. A ratio of the coherence length to the length of the loop is greater than 1.


Find Patent Forward Citations

Digonnet, Michael J. F.. (2014). Optical sensor having a non-negligible source coherence length (U.S. Patent No. 8681339). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8681339

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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