Fiber bragg grating parameter estimation by using two thermally-modulated intensity spectra for arbitrary distributed strain sensing

Hsu Chih Cheng, Yu Lung Lo

Research output: Contribution to journalConference articlepeer-review

Abstract

In this paper we describe the use of a genetic algorithm and two thermally-modulated fiber Bragg grating's (FBG's) reflection intensity spectra for inversely extracting complete physical parameters. The fiber Bragg grating's complete parameters included the grating period, grating position, grating length, chirped direction, and refractive index modulation. In this study, a uniform and chirped fiber Bragg gratings are synthesized successfully in the numerical analysis. Also, the experimental results show that the complete parameter synthesis in grating period, grating length, refractive index modulation and various grating positions from a 10 mm length uniform FBG have been recovered accurately. After finding those physical parameters, the arbitrary distributed strain sensing technique is easy to accomplish by using two fiber Bragg gratings sensing techniques.

Original languageEnglish
Article number59
Pages (from-to)365-371
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5852 PART I
DOIs
Publication statusPublished - 2005 Dec 12
EventThird International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics - Singapore, Singapore
Duration: 2004 Nov 292004 Dec 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Fiber bragg grating parameter estimation by using two thermally-modulated intensity spectra for arbitrary distributed strain sensing'. Together they form a unique fingerprint.

Cite this