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:
Apr. 19, 1994
Filed:
Mar. 05, 1992
Abstract
A sensor is to measure a physical quantity which causes a non-reciprocal effect, such as the Sagnac-effect, in an optical ring resonator. This effect provides a difference of clockwise and counter-clockwise optical path lengths in the ring resonator. The difference is proportional to the physical quantity, such as rotation rate in the case of the Sagnac-effect. A semiconductor laser is coupled to the ring resonator and generates clockwise and counter-clockwise beams therein. The laser frequency is modulated by directly energizing the semiconductor laser such that sidebands of the frequency-modulated laser beams are in resonance with the ring resonator. A detector device responds to the difference of the clockwise and counter-clockwise light beams and generates a signal indicative of the measured physical quantity.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile