Novel Distributed Fiber-Optic Strain Sensor by Localizing Dynamic Grating in Polarization-Maintaining Erbium-Doped Fiber: Proposal and Theoretical Analysis

• Fan Xinyu

  Department of Electronic Engineering, University of Tokyo

• He Zuyuan

  Department of Electronic Engineering, University of Tokyo

• Hotate Kazuo

  Department of Electronic Engineering, University of Tokyo

Abstract

A novel scheme of distributed fiber-optic strain sensor by localizing a dynamic grating in a polarization-maintaining erbium-doped fiber is proposed. The dynamic grating, which is introduced by launching two counterpropagating coherent light beams into a pumped erbium-doped fiber per gain saturation, is examined. A theoretical model of the dynamic grating is given and used to perform simulations of the reflectivity of the dynamic grating localized by synthesizing the optical coherence function. Theoretical analysis and numerical simulation of the novel sensor scheme show that the Bragg frequency of the dynamic grating will shift according by 0.426 MHz/με to strain in a typical polarization-maintaining erbium-doped fiber.

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 44 (2), 1101-1106, 2005

  The Japan Society of Applied Physics

Keywords

• distributed fiber-optic sensor
• strain sensor
• dynamic grating
• polarization-maintaining fiber
• erbium-doped fiber

Details

• CRID: 1390001206265419776
• NII Article ID: 10014419383
• NII Article ID: 130004533296
• NII Article ID: 210000057421
• NII Book ID: AA10457675
• DOI: 10.1143/jjap.44.1101
• ISSN: 13474065
• ISSN: 00214922
• NDL BIB ID: 7259235
• Web Site: http://id.ndl.go.jp/bib/7259235
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7259235
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.1101
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.1101/pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed