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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 1 — Jan. 1, 2014
  • pp: 22–25

Simple and compact reflective refractometer based on tilted fiber Bragg grating inscribed in thin-core fiber

Bobo Gu, Wenliang Qi, Jie Zheng, Yanyan Zhou, Perry Ping Shum, and Feng Luan  »View Author Affiliations


Optics Letters, Vol. 39, Issue 1, pp. 22-25 (2014)
http://dx.doi.org/10.1364/OL.39.000022


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Abstract

A simple and compact reflective refractometer based on a tilted fiber Bragg grating (TFBG) inscribed in an ultra-high photon-sensitive thin-core fiber is proposed and experimentally demonstrated. The reflective refractometer utilizes a short piece of thin-core fiber containing one TFBG to ensure the recoupling of cladding modes. The reflection spectra occur in two well-defined wavelength bands that correspond to the Bragg core mode and cladding modes, respectively. It is found that the power of the collected cladding modes changes with the external refractive index (RI), while that of the Bragg core mode remains unaffected and can be used as the temperature reference. High RI sensitivity and temperature immunity of the proposed reflective refractometer are experimentally achieved.

© 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
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: October 23, 2013
Revised Manuscript: November 11, 2013
Manuscript Accepted: November 13, 2013
Published: December 16, 2013

Citation
Bobo Gu, Wenliang Qi, Jie Zheng, Yanyan Zhou, Perry Ping Shum, and Feng Luan, "Simple and compact reflective refractometer based on tilted fiber Bragg grating inscribed in thin-core fiber," Opt. Lett. 39, 22-25 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-1-22


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