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. 05, 1995
Filed:
Feb. 14, 1994
Applicant:
Inventor:
Manfred Kemmler, Vorstetten, DE;
Assignee:
Litef GmbH, Freiburg im Breisgau, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C / ;
U.S. Cl.
CPC ...
356350 ;
Abstract
A method for compensating for light source wavelength variation in a fiber optic gyro having a closed reset control loop. The method employs the finding that the voltage range required for a 2.pi. phase shift in a phase modulator is a function of the wavelength of the gyro light source. The voltage required for affecting the 2.pi. phase shift in such a gyro is regulated according to the invention and utilized to compensate changes in light source wavelength or scale factor. Phase modulator temperature is also taken into account for precise compensation.