@inproceedings{75aed63143494b84ad0b104022be4afa,
title = "A ring core fiber sensor based on Mach-Zehnder interferometer for lateral pressure sensing",
abstract = "In this work, we proposed a ring core fiber (RCF) based all-fiber sensor used for lateral pressure sensing. The sensor is composed of 1-mm coreless fiber (CLF) and 2.5-cm RCF. Then the CL-RC fiber structure is connected to two segments of single-mode fibers (SMFs) to form a Mach-Zehnder interferometer (MZI). One of the SMFs serves as the lead-in fiber which is linked with a broadband laser source (BBS) and the other SMF is connected to the optical spectrum analyzer (OSA) for signal recording. The transmission spectrum of the MZI structure has a large extinction ratio (ER) of up to 20 dB with the free spectral range (FSR) of 9.3 nm. After the fabrication, the MZI sensor is packaged for pressure sensing at room temperature (25 ℃). The weights with different values are applied on the fiber sensor so that the intensities of pressure can be calculated and adjusted. The lateral pressure intensity is tuned from around 1.6 MPa to 9.6 MPa. With the increase of pressure intensity, the spectra of output signals show a linear redshift. The pressure sensitivity of the proposed MZI sensor reaches 607 pm/MPa with good linearity of 0.9839. The proposed pressure sensor formed by RCF has many advantages, such as easy fabrication, low cost, small size, electromagnetic resistance and good sensitivity, which can be potentially applied to diverse fields.",
keywords = "lateral pressure, Mach-Zehnder interferometer, Ring core fiber",
author = "Weihao Yuan and Changyuan Yu",
note = "Publisher Copyright: {\textcopyright} 2022 SPIE.; Optoelectronic Devices and Integration XI 2022 ; Conference date: 05-12-2022 Through 11-12-2022",
year = "2022",
month = dec,
doi = "10.1117/12.2641920",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Xuping Zhang and Baojun Li and Changyuan Yu and Xinliang Zhang",
booktitle = "Optoelectronic Devices and Integration XI",
address = "United States",
}