Sensitivity-enhanced temperature sensor with parallel dual fabry-perot interferometers structure based on harmonic Vernier effect

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2024-11-27 DOI:10.1016/j.optcom.2024.131363

Cheng Zuo , Kaiyang Wu , Jiatong Luo , Dong Guang , Jun Zhu , Xuqiang Wu , Jinhui Shi , Benli Yu

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引用次数: 0

Abstract

A sensitivity-enhanced temperature sensor with a parallel dual Fabry-Perot interferometers (FPIs) structure based on the harmonic Vernier effect is proposed and experimentally demonstrated. The sensing FPI is fabricated by fusion splicing a multi-hundred-micron long polarization maintaining photonic crystal fiber (PMPCF) tip with a single mode fiber (SMF). The reference FPI is fabricated by inserting two SMFs into the ends of a single-pore capillary. The length of the air cavity in the reference FPI is controlled and optimized to create a harmonic Vernier effect, thereby achieving significant sensitization of the sensor sensitivity and modulation of the amplification factor. Experimental results show that the temperature sensitivity of the single sensing FPI is 11.9 p.m./°C from 40 °C to 400 °C, and the temperature sensitivities of the parallel dual FPIs based on the harmonic Vernier effect are −408.95 p.m./°C, −723.23 p.m./°C, and −1.93 nm/°C, respectively. The proposed sensor has a simple structure, high sensitivity, and excellent stability, making it have certain application prospects in high temperature measurement fields such as aerospace and metallurgy.

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.