Optical-fiber resonant rings based on polarization-dependent couplers

Author

Andres, Miguel V. ; Foulds, Kennath W H

Author_Institution

Dept. de Fisica Aplicada, Valencia Univ., Burjasot, Spain

Volume

8

Issue

8

fYear

1990

fDate

8/1/1990 12:00:00 AM

Firstpage

1212

Lastpage

1220

Abstract

A theoretical and experimental analysis has been carried out on optical-fiber resonant rings based on polarization-dependent couplers. The analysis includes the use of optical-fiber polarization splitters and polarization-preserving fiber as particular cases. Two resonant configurations are presented and their sensor applications discussed. The changes of polarizations that take place in the ring are used as an effective distributed coupling which in one configuration feeds power into a resonance, and in the other introduces a variable attenuation, changing the effective losses of the resonant mode. The experimental characteristics of the system enable detection of small polarization changes. The experimental characteristics of a resonant ring about 2.5-m long and a polarization-selecting coupler are presented

Keywords

cavity resonators; fibre optic sensors; light polarisation; optical couplers; optical losses; 2.5 m; effective distributed coupling; effective losses; optical-fiber polarization splitters; optical-fiber resonant rings; polarization changes; polarization-dependent couplers; polarization-preserving fiber; polarization-selecting coupler; resonant configurations; resonant mode; sensor applications; variable attenuation; Attenuation; Feeds; Optical attenuators; Optical fiber couplers; Optical fiber polarization; Optical fiber sensors; Optical polarization; Optical sensors; Resonance; Sensor phenomena and characterization;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.57843

Filename

57843