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High-Sensitivity Bending Sensor Based on Supermode Interference in Coupled Four-Core Sapphire-Derived Fiber

A Mach-Zehnder interferometer (MZI) sensor based on a four-core sapphire-derived fiber (FSDF) for bending sensing is proposed and demonstrated. The MZI is formed by splicing a coupled FSDF between two single-mode fibers, delivering supermode interference among four LP01-like supermodes (LP01s modes) and eight LP11-like supermodes (LP11s modes). Benefiting from the different response of the field distribution of each supermode to curvature changes, MZI sensors with a variety of bending properties can be fabricated based on the interference of different supermodes in the FSDF. The experimental results show that the sensitivity of the FSDF-MZI sensor I based on the interference between the LP01s and the LP11s modes is about 4.5 dB/m -1 in the curvature range from 0.4 to 2.5 m -1 . The FSDF-MZI sensor II based on the interference of two LP11s modes can realize bending sensing in ± Y directions. The sensitivity of FSDF-MZI sensor II in the curvature range of -10.0-5.0 m -1 is about -24.526 nm/m -1 . It suggests that the proposed FSDF-MZI sensor has potential application in the field of structure health detection.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.39 No.12 June 15 2021

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 3932 - 3940

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

MULTICORE FIBER
BENDING SENSOR
MACH–ZEHNDER INTERFEROMETER
SUPERMODE

Info Detail Spesifik

DOI: 10.1109/JLT.2021.3050933

Pernyataan Tanggungjawab

Zhifeng Wang, Liang Zhang, Zhangwei Ma, Zhenyi Chen, Tingyun Wang, Fufei Pang

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