Polarization modulation errors in all-fiber depolarized gyroscopes

Author

Szafraniec, Bogdan ; Blake, James

Author_Institution

Honeywell Technol. Center, Honeywell Inc., Phoenix, AZ, USA

Volume

12

Issue

9

fYear

1994

fDate

9/1/1994 12:00:00 AM

Firstpage

1679

Lastpage

1684

Abstract

Polarization modulation errors in all-fiber depolarized gyros having imperfect depolarization are examined. As in the case of PM fiber gyros, birefringence modulation is shown to give rise to quadrature errors. In addition, we demonstrate the existence of a small time lag between the modulation of the two linear polarization states of a fiber-wound PZT modulator by correlating this effect with an associated signal channel error. Proper frequency operation and/or good depolarization of the light act to reduce both types of errors

Keywords

birefringence; fibre optic sensors; gyroscopes; light polarisation; measurement errors; optical fibres; optical modulation; PM fiber gyros; PZT; PbZrO3TiO3; all-fiber depolarized gyroscopes; birefringence modulation; depolarization; fiber-wound PZT modulator; frequency operation; imperfect depolarization; linear polarization states; polarization modulation errors; quadrature errors; signal channel error; small time lag; Birefringence; Coils; Delay effects; Fading; Frequency; Gyroscopes; Optical fiber polarization; Phase modulation; Samarium; Signal processing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.320952

Filename

320952