Differential phase tracking applied to Bragg gratings in multicore fiber for high accuracy curvature measurement

Gordon M. H. Flockhart, Geoffrey A. Cranch, Clay K. Kirkendall

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

4 Citations (Scopus)
111 Downloads (Pure)

Abstract

We report interferometric interrogation of fiber Bragg gratings in separate cores of a multicore fiber for high resolution quasi-static and dynamic bend measurements. Two axis curvature measurements are made by measuring the differential strain between three FBG sensors formed in a singlemode four-core fiber using a common interrogating interferometer. Therefore a measurement of the differential phase from each FBG yields the differential strain and compensates for the common-mode random drift of the interrogating interferometer. A DC curvature accuracy of 3.4 x 10(-3) m(-1), and an AC curvature resolution of 1.2 x 10(-4) m(-1)/Hz(1/2) are reported.
Original languageEnglish
Title of host publicationSmart Structures and Materials 2006
Subtitle of host publicationSmart Sensor Monitoring Systems and Applications
EditorsD Inaudi, W Ecke, B Culshaw, KJ Peters, E Udd
Place of PublicationBellingham
Number of pages10
DOIs
Publication statusPublished - 2006
EventSmart Structures and Materials 2006 Conference - San Diego, United States
Duration: 27 Feb 20062 Mar 2006

Publication series

NameProceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE)
PublisherSPIE
Volume6167
ISSN (Print)0277-786X

Conference

ConferenceSmart Structures and Materials 2006 Conference
CountryUnited States
CitySan Diego
Period27/02/062/03/06

Keywords

  • phase tracking
  • multicore
  • optical fiber sensor
  • fiber Bragg grating
  • interterometry
  • curvature measurement
  • Bragg gratings

Fingerprint Dive into the research topics of 'Differential phase tracking applied to Bragg gratings in multicore fiber for high accuracy curvature measurement'. Together they form a unique fingerprint.

  • Cite this

    Flockhart, G. M. H., Cranch, G. A., & Kirkendall, C. K. (2006). Differential phase tracking applied to Bragg gratings in multicore fiber for high accuracy curvature measurement. In D. Inaudi, W. Ecke, B. Culshaw, KJ. Peters, & E. Udd (Eds.), Smart Structures and Materials 2006: Smart Sensor Monitoring Systems and Applications [616701] (Proceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE); Vol. 6167).. https://doi.org/10.1117/12.657576