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:
Feb. 22, 1994
Filed:
Jan. 15, 1992
Bogdan Szafraniec, Cave Creek, AZ (US);
Richard H Frische, Phoenix, AZ (US);
Richard J August, Scottsdale, AZ (US);
Kevin B Dimond, Phoenix, AZ (US);
Dick Ang, Glendale, AZ (US);
James N Blake, Phoenix, AZ (US);
John R Feth, Phoenix, AZ (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
An error control arrangement for an optical fiber rotation sensor having electromagnetic waves propagating in opposite directions passing through a bias optical phase modulator operated by a phase modulation generator both of which can contribute second harmonic distortion resulting in errors in the sensor output signal which are controlled. Control of the bias optical phase modulator contribution for a modulator having a piezoelectric body wrapped with an optical fiber portion is accomplished by mounting the body utilizing layers having nonlinear stiffness.