Temperature-independent measurement of displacement based on the chirp tuning of a fiber grating

Xiufeng Yang, Xinyong Dong, Chun Liu Zhao, Jun Hong Ng, Qizhen Peng, Xiaoqun Zhou, Chao Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

Abstract

We report the temperature-independent measurement of displacement based on the chirp tuning of a fiber grating and a specially designed cantilever. The 3-dB bandwidth of the chirped grating changes linearly with displacement and is independent of the temperature. The displacement can be monitored directly by measuring the reflected light from the chirp grating. A linear displacement response of 37.063 mV/mm was obtained. The fluctuation of the output signal is less than 5% for a temperature range from 20 to 60°C without any temperature compensation technique. The sensor has potentially Iow cost due to its simple structure.
Original languageEnglish
Article number074401
Pages (from-to)1-4
Number of pages4
JournalOptical Engineering
Volume44
Issue number7
DOIs
Publication statusPublished - 1 Jul 2005
Externally publishedYes

Keywords

  • Chirped fiber gratings
  • Displacement
  • Fiber optic sensors
  • Temperature-independent

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

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