Cascaded tilted fiber Bragg grating for enhanced refractive index sensing

Biqiang Jiang; Zhixuan Bi; Shouheng Wang; Teli Xi; Kaiming Zhou; Lin Zhang; Jianlin Zhao

doi:10.1088/1674-1056/27/11/114220

Cascaded tilted fiber Bragg grating for enhanced refractive index sensing

Biqiang Jiang^*, Zhixuan Bi, Shouheng Wang, Teli Xi, Kaiming Zhou, Lin Zhang, Jianlin Zhao

^*Corresponding author for this work

Northwestern Polytechnical University

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

19 Citations (SciVal)

Abstract

We proposed and experimentally demonstrated a cascaded tilted fiber Bragg grating (TFBG) for enhanced refractive index sensing. The TFBG is UV-inscribed in series in ordinary single-mode fiber (SMF) and reduced-diameter SMF with the same tilt angle, and then excites two sets of superposed spectral combs of cladding modes. The cascaded TFBG with total length of 18 mm has a much wider wavelength range over 100 nm and narrower wavelength separation than that of a TFBG only in the SMF, enabling an enlarged range and a higher accuracy of refractive index measurement. The fabricated TFBG with the merits of enhanced sensing capability and temperature self-calibration presents great potentials in the biochemical sensing applications.

Original language	English
Article number	114220
Journal	Chinese Physics B
Volume	27
Issue number	11
DOIs	https://doi.org/10.1088/1674-1056/27/11/114220
Publication status	Published - 8 Oct 2018

Funding

∗Project supported by the National Natural Science Foundation of China (Grant Nos. 61775182 and 61505165) and Marie Skłodowska-Curie Individual Fellowships in the European Union’s Horizon 2020 Research and Innovation Programme (Grant No. 660648). †Corresponding author. E-mail: [email protected]

Keywords

Fiber optics sensors
Refractive index measurement
Tilted fiber Bragg grating

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title = "Cascaded tilted fiber Bragg grating for enhanced refractive index sensing",

abstract = "We proposed and experimentally demonstrated a cascaded tilted fiber Bragg grating (TFBG) for enhanced refractive index sensing. The TFBG is UV-inscribed in series in ordinary single-mode fiber (SMF) and reduced-diameter SMF with the same tilt angle, and then excites two sets of superposed spectral combs of cladding modes. The cascaded TFBG with total length of 18 mm has a much wider wavelength range over 100 nm and narrower wavelength separation than that of a TFBG only in the SMF, enabling an enlarged range and a higher accuracy of refractive index measurement. The fabricated TFBG with the merits of enhanced sensing capability and temperature self-calibration presents great potentials in the biochemical sensing applications.",

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T1 - Cascaded tilted fiber Bragg grating for enhanced refractive index sensing

AU - Jiang, Biqiang

AU - Bi, Zhixuan

AU - Wang, Shouheng

AU - Xi, Teli

AU - Zhou, Kaiming

AU - Zhang, Lin

AU - Zhao, Jianlin

PY - 2018/10/8

Y1 - 2018/10/8

N2 - We proposed and experimentally demonstrated a cascaded tilted fiber Bragg grating (TFBG) for enhanced refractive index sensing. The TFBG is UV-inscribed in series in ordinary single-mode fiber (SMF) and reduced-diameter SMF with the same tilt angle, and then excites two sets of superposed spectral combs of cladding modes. The cascaded TFBG with total length of 18 mm has a much wider wavelength range over 100 nm and narrower wavelength separation than that of a TFBG only in the SMF, enabling an enlarged range and a higher accuracy of refractive index measurement. The fabricated TFBG with the merits of enhanced sensing capability and temperature self-calibration presents great potentials in the biochemical sensing applications.

AB - We proposed and experimentally demonstrated a cascaded tilted fiber Bragg grating (TFBG) for enhanced refractive index sensing. The TFBG is UV-inscribed in series in ordinary single-mode fiber (SMF) and reduced-diameter SMF with the same tilt angle, and then excites two sets of superposed spectral combs of cladding modes. The cascaded TFBG with total length of 18 mm has a much wider wavelength range over 100 nm and narrower wavelength separation than that of a TFBG only in the SMF, enabling an enlarged range and a higher accuracy of refractive index measurement. The fabricated TFBG with the merits of enhanced sensing capability and temperature self-calibration presents great potentials in the biochemical sensing applications.

KW - Fiber optics sensors

KW - Refractive index measurement

KW - Tilted fiber Bragg grating

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VL - 27

JO - Chinese Physics B

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ER -

Cascaded tilted fiber Bragg grating for enhanced refractive index sensing

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