Two curvature sensors based on no-core–seven-core fiber interference-Reference-Cited by-同舟云学术

Two curvature sensors based on no-core–seven-core fiber interference

Published:2024-02-19 Issue:4 Volume:79 Page:309-316
ISSN:0932-0784
Container-title:Zeitschrift für Naturforschung A
language:en
Short-container-title:

Author:

Ran Yifan¹,Niu Siyao¹,Xu Shishi¹,Feng Wenlin²³,Cheng Pengming²

Affiliation:

1. School of Science , Chongqing University of Technology , Chongqing 400054 , China

2. School of Electrical and Electronic Engineering , Chongqing University of Technology , Chongqing 400054 , China

3. Chongqing Key Laboratory of Green Energy Materials Technology and Systems , Chongqing 400054 , China

Abstract

Abstract Using the no-core fiber (NCF)–seven-core fiber (SCF) interference structure, two curvature sensors of Michelson interference type and Mach–Zehnder interference (MZI) type are proposed, respectively. The curvature sensor based on Michelson interference shows wavelength-modulation characteristics, the sensitivity is about −22.76 nm/m−1 with a linearity of 0.9823, the temperature sensitivity is only 0.054 nm/°C, and the effect of temperature on curvature can be negligible. The MZI sensor based on an enlarged taper-embedded cascaded structure is an intensity-modulated sensor. The sensitivities are −63.6271 dB m/m−1 and 93.3293 dBm/m−1 for the forward and reverse curvature, respectively, and the linearities are 0.9987 and 0.9930, respectively. But the strain sensitivity (8.357 × 10−4 dBm/με) of the MZI sensor is so tiny, which can avoid the strain cross effect. The two sensors can be used in the detection of the curvature at different (temperature/strain) conditions.

Funder

Chongqing Municipal Education Commission

The National Natural Science Foundation of China

Joint Fund of Chongqing Municipal Education Commission and Science and Technology Bureau

Chongqing Municipal Science and Technology Bureau

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/zna-2023-0333/pdf

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