Passive signal processing of in-line fiber etalon sensors for high strain-rate loading

Yun Lung Lo, James S. Sirkis, Chia Chen Chang

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)

Abstract

This paper describes the development of a passively demodulated optical fiber sensor system capable of accommodating the high strain-rate events commonly encountered in applications involving stress wave propagation. This sensor system, which is based on in-line fiber etalon (ILFE) sensors and path-matched differential interferometry (PMDI), was tested experimentally at low frequency and strain-rates (time derivative of strain) up to (∼107 με/s). For the present system, this strain-rate corresponds to a sensor phase bandwidth of approximately 100 kHz. Characterization tests using sensor gauge lengths ranging from 260 to 350 μm showed that the sensor system had a minimum detectable phase of ∼2 microrad/√Hz rms at 2 kHz which corresponds to ∼0.8 nε/√Hz rms for 260 μm-gauge length sensor.

Original languageEnglish
Pages (from-to)1578-1586
Number of pages9
JournalJournal of Lightwave Technology
Volume15
Issue number8
DOIs
Publication statusPublished - 1997 Aug 1

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Passive signal processing of in-line fiber etalon sensors for high strain-rate loading'. Together they form a unique fingerprint.

Cite this