Fiber laser sensor for simultaneously axial strain and transverse load detection

Kuanglu Yu, Chongqing Wu, Mingxuan Sun, Chao Lu, Hwa Yaw Tam, Yao Zhao, Liyang Shao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)

Abstract

We demonstrate a distributed Bragg reflector (DBR) fiber laser sensor for simultaneous measurements of axial strain and transverse load, this sensor might be applied in structure health monitoring. In this scheme, transverse load introduces an additional birefringence and consequently a linear beat note frequency change of the orthogonally polarized lasing modes, while the axial strain can be simply deduced from the wavelength shift of the laser. The sensor's sensitivity is measured to be 1.33 kHz/mg and 1.266 pm/με for lateral load and axial strain respectively.
Original languageEnglish
Pages (from-to)137-141
Number of pages5
JournalMeasurement: Journal of the International Measurement Confederation
Volume62
DOIs
Publication statusPublished - 1 Jan 2015

Keywords

  • Axial strain
  • Distributed Bragg reflector fiber laser
  • Fiber optics sensors
  • Strain sensor
  • Transverse load

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

Cite this