Optical Fiber Methane Sensor Based on Mach-Zehnder Interferometer Induced by Multimode Interference.

Fuling Yang, Sicheng Zong, Xinghan Li, Yating Hu, Zelong Wang, Yuanyuan Qu, Jing Wang, Yan Li

Abstract read

In one paragraph

Article in Micromachines, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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Authors and funding

8 authors.

Fuling YangSchool of Mechanical and Electrical Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China.ORCID 0000-0001-5166-1317

Sicheng ZongSchool of Mechanical and Electrical Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China.

Xinghan LiSchool of Mechanical and Electrical Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China.

Yating HuSchool of Mechanical and Electrical Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China.

Zelong WangSchool of Mechanical and Electrical Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China.

Yuanyuan QuSchool of Mechanical and Electrical Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China.ORCID 0000-0001-8999-9516

Jing WangSchool of Mechanical and Electrical Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China.

Yan LiSchool of Mechanical and Electrical Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China.

Funding

China University of Mining and Technology (Beijing) College Student Innovation Training Pro-gram 202304055Fundamental Research Funds for the Central Universities 2023 JCCXJD02National Natural Science Foundation of China 62175258National Natural Science Foundation of China 62303470

6 · The paper itself

Abstract

In this paper, based on the multimode interference structure fiber and the sensitive advantages of a zeolitic imidazolate framework-8/Polydimethylsiloxane (ZIF-8/PDMS)-sensitive film in methane detection, a methane sensor based on an interferometer induced by multimode interference is designed and built with the aid of modeling. The methane-sensitive single mode fiber (MS-SMF) is obtained by coating a ZIF-8/PDMS-sensitive film around the cladding of a thin-diameter SMF. The change in methane concentration leads to a change in the cladding mode of the MS-SMF, which causes a change in interference spectrum and realizes methane concentration sensing. The factors affecting the sensitivity of the methane sensor are analyzed. Methane sensors with various parameters are fabricated and tested on a methane sensor platform for performance estimation at methane concentrations of 0-4%. The experimental results show that the sensitivity of the sensor to methane reaches 2.364 nm/% when the length of the MS-SMF is 42 mm, the thickness of the sensitive film is 1.8 µm, and the diameter of the MS-SMF is 58 µm. The limit of detection is about 338 ppm. The average response time is 30 s and the recovery time is 45 s. The temperature sensitivity of the methane sensor is approximately 0.026 nm/°C. The experimental results verify the correctness of the methane sensor model. This study provides a new design idea for optical methane sensors, showing great application potential in the field of methane detection.

Indexed as

Mach–Zehnder interferometermethane sensormultimode interferenceoptical fiber

Identifiers

PMID40283280

DOI10.3390/mi16040406

PMCPMC12029399

What OpenQuestion holds

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LicenceCC BY

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.