Common path heterodyne optical fiber sensors

Author

Yoshino, Toshihiko ; Hashimoto, Takaharu ; Nara, Makoto ; Kurosawa, Kiyoshi

Author_Institution

Dept. of Electron. Eng., Gunma Univ., Japan

Volume

10

Issue

4

fYear

1992

fDate

4/1/1992 12:00:00 AM

Firstpage

503

Lastpage

513

Abstract

The common path type of differential heterodyne fiber-optic sensing scheme has been developed. It uses a polarization maintaining fiber as either a sensor or an optical lead and a dual-frequency dual-polarization laser beam. The sensing schemes are applied to the measurements of temperature, strain, force, pressure, rotation rate (gyro), magnetic and electric fields, and thin film thickness. The sensing scheme and main performances for each measurand are described. High precision and high stability as well as good linearity for each measurand are demonstrated

Keywords

demodulation; fibre optic sensors; light polarisation; optical modulation; accuracy; common path; differential heterodyne fiber-optic sensing scheme; dual-frequency dual-polarization laser beam; electric fields; force; good linearity; gyro; heterodyne optical fiber sensors; high precision; high stability; magnetic fields; measurand; optical lead; polarization maintaining fiber; pressure; rotation rate; strain; temperature; thin film thickness; Force measurement; Magnetic field measurement; Magnetic sensors; Optical fiber polarization; Optical fiber sensors; Optical films; Optical mixing; Optical sensors; Strain measurement; Temperature measurement;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.134205

Filename

134205