Evaluation of integrated optic modulator-based detection schemes for in-line fiber etalon sensors

Author

Singh, Harmeet ; Sirkis, James S. ; Andrews, Jeff ; Pulfrey, Robert

Author_Institution

Smart Mater. & Structures Res. Center, Maryland Univ., College Park, MD, USA

Volume

13

Issue

8

fYear

1995

fDate

8/1/1995 12:00:00 AM

Firstpage

1772

Lastpage

1779

Abstract

This paper compares three classes of demodulation schemes for interpreting the static and dynamic response of in-line fiber etalon (ILFE) sensors. Each demodulation scheme employs path matched differential interferometry and an unbalanced integrated optic Mach-Zehnder interferometer as a readout interferometer. Active homodyne, synthetic-heterodyne and two types of pseudo-heterodyne based demodulators are evaluated. In the results presented here, signals generated by the ILFE ranging from quasistatic to about 100 Hz were recorded and compared with the signals generated by a resistance strain gauge, and were found to be in good agreement

Keywords

Mach-Zehnder interferometers; demodulation; fibre optic sensors; integrated optics; light interferometry; optical communication equipment; optical modulation; 100 GHz; active homodyne; demodulation schemes; dynamic response; in-line fiber etalon sensors; integrated optic modulator-based detection schemes; path matched differential interferometry; pseudo-heterodyne based demodulators; readout interferometer; resistance strain gauge; static response; synthetic-heterodyne; unbalanced integrated optic Mach-Zehnder interferometer; Capacitive sensors; Demodulation; Integrated optics; Optical detectors; Optical fiber sensors; Optical interferometry; Optical modulation; Phase shifting interferometry; Signal generators; Strain measurement;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.405323

Filename

405323