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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 19 — Oct. 1, 2013
  • pp: 3795–3798

Low-temperature sensitivity periodically tapered photonic crystal-fiber-based refractometer

Pengfei Wang, Lin Bo, Chunying Guan, Yuliya Semenova, Qiang Wu, Gilberto Brambilla, and Gerald Farrell  »View Author Affiliations


Optics Letters, Vol. 38, Issue 19, pp. 3795-3798 (2013)
http://dx.doi.org/10.1364/OL.38.003795


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Abstract

In this Letter, an all-fiber refractometer with a simple configuration of periodical tapers on a photonic crystal fiber (PCF) is proposed and investigated experimentally. The proposed fiber refractive index (RI) sensor consists of a PCF sandwiched between two standard single-mode fibers, with tapers periodically fabricated along the PCF using a CO2 laser beam focused by a ZnSe cylindrical lens. The proposed fiber sensor can be used for RI sensing by measuring the wavelength shift of the multimode interference dip over the transmission spectrum. An average sensitivity of 222nm/RIU has been experimentally achieved over a RI range from 1.33 to 1.38. The proposed refractometer is also significantly less sensitive to temperature, and an experimental demonstration of this reduced sensitivity is presented. The proposed RI sensor benefits from simplicity and low-cost and achieves a competitive sensitivity compared with other existing fiber-optic sensors.

© 2013 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
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 3, 2013
Revised Manuscript: August 28, 2013
Manuscript Accepted: August 29, 2013
Published: September 20, 2013

Citation
Pengfei Wang, Lin Bo, Chunying Guan, Yuliya Semenova, Qiang Wu, Gilberto Brambilla, and Gerald Farrell, "Low-temperature sensitivity periodically tapered photonic crystal-fiber-based refractometer," Opt. Lett. 38, 3795-3798 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-19-3795

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