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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 20 — Oct. 15, 2013
  • pp: 4019–4022

Fiber in-line Mach–Zehnder interferometer based on near-elliptical core photonic crystal fiber for temperature and strain sensing

Hu Liang, Weigang Zhang, Huayu Wang, Pengcheng Geng, Shanshan Zhang, Shecheng Gao, Chunxue Yang, and Jieliang Li  »View Author Affiliations


Optics Letters, Vol. 38, Issue 20, pp. 4019-4022 (2013)
http://dx.doi.org/10.1364/OL.38.004019


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Abstract

A fiber in-line Mach–Zehnder interferometer is fabricated by selectively filling liquid into one air hole of the innermost layer of a photonic crystal fiber (PCF). The refractive index of the liquid is so close to that of the background silica in the wavelength range of 1300–1600 nm that the two-mode PCF evolves into multimode PCF with an elliptically shaped core. Due to the different propagation constants, interference can occur between the fundamental mode and higher-order modes of the liquid-filled PCF. Such a device is applied in temperature and strain measurements with high sensitivities of 16.49nm/°C and 14.595nm/N, respectively.

© 2013 Optical Society of America

OCIS Codes
(060.2300) Fiber optics and optical communications : Fiber measurements
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(230.1150) Optical devices : All-optical devices
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 13, 2013
Revised Manuscript: July 19, 2013
Manuscript Accepted: August 28, 2013
Published: October 4, 2013

Citation
Hu Liang, Weigang Zhang, Huayu Wang, Pengcheng Geng, Shanshan Zhang, Shecheng Gao, Chunxue Yang, and Jieliang Li, "Fiber in-line Mach–Zehnder interferometer based on near-elliptical core photonic crystal fiber for temperature and strain sensing," Opt. Lett. 38, 4019-4022 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-20-4019


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