Temperature-calibrated high-precision refractometer using a tilted fiber Bragg grating

Biqiang Jiang; Kaiming Zhou; Changle Wang; Yunhe Zhao; Jianlin Zhao; Lin Zhang

doi:10.1364/OE.25.025910

Temperature-calibrated high-precision refractometer using a tilted fiber Bragg grating

Biqiang Jiang^*
, Kaiming Zhou
, Changle Wang
, Yunhe Zhao
, Jianlin Zhao
, Lin Zhang

^*Corresponding author for this work

College of Engineering and Physical Sciences

MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions
Northwestern Polytechnical University
Aston University
Aston University
State Key Laboratory of Transient Optics and Photonics
Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences

Research output: Contribution to journal › Article › peer-review

55 Citations (Scopus)

108 Downloads (Pure)

Abstract

We present a refractometer with main- and vernier-scale to measure the refractive index (RI) of liquids with high precision by using the fine spectrum structure of a tilted fiber Bragg grating (TFBG). The absolute RI values are determined by the accurate wavelength of cut-off mode resonances. The main- and vernier-scale are calibrated by measuring large groups of fine spectra at different cut-off mode resonances in a small RI range, and the use of vernier-scale certainly reduces the RI measurement uncertainty resulted from the discrete cladding mode resonances. The performance of the TFBG-based vernier refractometer is experimentally verified by exploring the temperature dependence of RI of anhydrous ethanol in a near infrared region, showing an enhanced accuracy to the order of 10⁻⁴, high repeatability and temperature self-calibration capability.

Original language	English
Pages (from-to)	25910-25918
Number of pages	9
Journal	Optics Express
Volume	25
Issue number	21
DOIs	https://doi.org/10.1364/OE.25.025910
Publication status	Published - 10 Oct 2017

Bibliographical note

© Copyright 2017 | The Optical Society. All Rights Reserved. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.

Funding: Marie Skłodowska-Curie Individual Fellowships in the European Union’s Horizon 2020 Research and Innovation Programme (660648); National Natural Science Foundation of China (61505165); Natural Science Basic Research Plan in Shaanxi Province of China (2016JQ6032).

Keywords

Fiber optics components
Fiber Bragg gratings;
Fiber optics sensors

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10.1364/OE.25.025910

Temperature-calibrated high-precision refractometer using a tilted fiber.._
© Copyright 2017 | The Optical Society. All Rights Reserved. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
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title = "Temperature-calibrated high-precision refractometer using a tilted fiber Bragg grating",

abstract = "We present a refractometer with main- and vernier-scale to measure the refractive index (RI) of liquids with high precision by using the fine spectrum structure of a tilted fiber Bragg grating (TFBG). The absolute RI values are determined by the accurate wavelength of cut-off mode resonances. The main- and vernier-scale are calibrated by measuring large groups of fine spectra at different cut-off mode resonances in a small RI range, and the use of vernier-scale certainly reduces the RI measurement uncertainty resulted from the discrete cladding mode resonances. The performance of the TFBG-based vernier refractometer is experimentally verified by exploring the temperature dependence of RI of anhydrous ethanol in a near infrared region, showing an enhanced accuracy to the order of 10−4, high repeatability and temperature self-calibration capability.",

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author = "Biqiang Jiang and Kaiming Zhou and Changle Wang and Yunhe Zhao and Jianlin Zhao and Lin Zhang",

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AU - Zhao, Yunhe

AU - Zhao, Jianlin

AU - Zhang, Lin

N1 - © Copyright 2017 | The Optical Society. All Rights Reserved. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited. Funding: Marie Skłodowska-Curie Individual Fellowships in the European Union’s Horizon 2020 Research and Innovation Programme (660648); National Natural Science Foundation of China (61505165); Natural Science Basic Research Plan in Shaanxi Province of China (2016JQ6032).

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AB - We present a refractometer with main- and vernier-scale to measure the refractive index (RI) of liquids with high precision by using the fine spectrum structure of a tilted fiber Bragg grating (TFBG). The absolute RI values are determined by the accurate wavelength of cut-off mode resonances. The main- and vernier-scale are calibrated by measuring large groups of fine spectra at different cut-off mode resonances in a small RI range, and the use of vernier-scale certainly reduces the RI measurement uncertainty resulted from the discrete cladding mode resonances. The performance of the TFBG-based vernier refractometer is experimentally verified by exploring the temperature dependence of RI of anhydrous ethanol in a near infrared region, showing an enhanced accuracy to the order of 10−4, high repeatability and temperature self-calibration capability.

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KW - Fiber Bragg gratings;

KW - Fiber optics sensors

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ER -

Temperature-calibrated high-precision refractometer using a tilted fiber Bragg grating

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