Power-referenced and self-calibrated PM-FBG vibroscope

Tuan Guo, Libin Shang, Fu Liu, Fa Du, Zhaochuan Zhang, Baiou Guan, Hwa Yaw Tam, Jacques Albert

Research output: Journal article publicationConference articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

A compact vibration sensing probe, in which a short section of polarization-maintained (PM) fiber stub containing a normal straight fiber Bragg grating (FBG) is spliced to another single-mode fiber without any lateral offset, is proposed and experimentally demonstrated. Two groups of well-defined resonances with ∼ 7 nm wavelength separation have been achieved in reflection. Among them, the recoupled cladding modes at short wavelength side are extremely sensitive to fiber bending and provide the real-time vibration information by cost-effective power detection. Meanwhile, the unwanted power fluctuations and temperature perturbations can be referenced out by monitoring the core mode resonances at the longest wavelength.
Original languageEnglish
Article numberAS1E.4
JournalAsia Communications and Photonics Conference, ACP
Publication statusPublished - 1 Jan 2012
Event2012 Asia Communications and Photonics Conference, ACP 2012 - Guangzhou, China
Duration: 7 Nov 201210 Nov 2012

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Hardware and Architecture

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