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Title: Simple and compact reflective refractometer based on tilted fiber Bragg grating inscribed in thin-core fiber
Authors: Gu, Bobo
Qi, Wenliang
Zheng, Jie
Zhou, Yanyan
Shum, Perry Ping
Luan, Feng
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
Issue Date: 2014
Source: Gu, B., Qi, W., Zheng, J., Zhou, Y., Shum, P. P., & Luan, F. (2014). Simple and compact reflective refractometer based on tilted fiber Bragg grating inscribed in thin-core fiber. Optics Letters, 39(1), 22-25.
Series/Report no.: Optics letters
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.
ISSN: 0146-9592
DOI: 10.1364/OL.39.000022
Rights: © 2014 Optical Society of America. This paper was published in Optics Letters and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official DOI: [].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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