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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 7 — Apr. 1, 2014
  • pp: 2076–2079

Photonic crystal fiber half-taper probe based refractometer

Pengfei Wang, Ming Ding, Lin Bo, Chunying Guan, Yuliya Semenova, Weimin Sun, Libo Yuan, Gilberto Brambilla, and Gerald Farrell  »View Author Affiliations


Optics Letters, Vol. 39, Issue 7, pp. 2076-2079 (2014)
http://dx.doi.org/10.1364/OL.39.002076


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Abstract

A compact single-mode photonic crystal fiber single-mode fiber tip (SPST) refractive index sensor is demonstrated in this Letter. A CO2 laser cleaving technique is utilized to provide a clean-cut fiber tip, which is then coated by a layer of gold to increase reflection. An average sensitivity of 39.1nm/RIU and a resolvable index change of 2.56×104 are obtained experimentally with a 3.2μm diameter SPST. The temperature dependence of this fiber-optic sensor probe is presented. The proposed SPST refractometer is also significantly less sensitive to temperature and an experimental demonstration of this reduced sensitivity is presented in the Letter. Because of its compactness, ease of fabrication, linear response, low temperature dependency, easy connectivity to other fiberized optical components and low cost, this refractometer could find various applications in chemical and biological sensing.

© 2014 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: February 14, 2014
Manuscript Accepted: February 24, 2014
Published: March 27, 2014

Virtual Issues
Vol. 9, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Pengfei Wang, Ming Ding, Lin Bo, Chunying Guan, Yuliya Semenova, Weimin Sun, Libo Yuan, Gilberto Brambilla, and Gerald Farrell, "Photonic crystal fiber half-taper probe based refractometer," Opt. Lett. 39, 2076-2079 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-7-2076


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