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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 7 — Mar. 1, 2013
  • pp: 1441–1447

In-fiber quasi-Michelson interferometer with a core–cladding-mode fiber end-face mirror

Qiangzhou Rong, Xueguang Qiao, Yanying Du, Dingyi Feng, Ruohui Wang, Yue Ma, Hao Sun, Manli Hu, and Zhongyao Feng  »View Author Affiliations

Applied Optics, Vol. 52, Issue 7, pp. 1441-1447 (2013)

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An in-fiber quasi-Michelson interferometer working on reflection is proposed and experimentally demonstrated. The device consists of a short section of multimode fiber (MMF) followed by a single-mode fiber (SMF) whose end face is terminated by a thick silver film. The MMF excites cladding modes into downstream SMF via the mismatched-core splicing interface. The core–cladding modes are reflected back by the silver film and recoupled to the core of lead-in SMF through the MMF. A well-defined interference pattern is obtained as the result of core–cladding mode interference. A configuration with a 40 mm pigtail SMF at a wavelength of 1528 nm exhibits a water level sensitivity of 49.8pm/mm and a liquid refractive index sensitivity of 574.6(pm/mm)/RIU (refractive index unit). In addition, the selected dip provides a considered temperature sensitivity of 61.26pm/°C and a high displacement sensitivity of 1018.6pm/mm.

© 2013 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.2370) Fiber optics and optical communications : Fiber optics sensors

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 21, 2012
Revised Manuscript: January 27, 2013
Manuscript Accepted: January 29, 2013
Published: February 26, 2013

Qiangzhou Rong, Xueguang Qiao, Yanying Du, Dingyi Feng, Ruohui Wang, Yue Ma, Hao Sun, Manli Hu, and Zhongyao Feng, "In-fiber quasi-Michelson interferometer with a core–cladding-mode fiber end-face mirror," Appl. Opt. 52, 1441-1447 (2013)

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