Improving the Accuracy of Methane Sensor with Dual Measurement Modes Based on Off-Axis Integrated Cavity Output Spectroscopy Using White Noise Perturbation

Improving the Accuracy of Methane Sensor with Dual Measurement Modes Based on Off-Axis Integrated Cavity Output Spectroscopy Using White Noise Perturbation

A methane (CH<sub>4</sub>) sensor based on off-axis integrated cavity output spectroscopy (OA-ICOS) was developed, equipped with two measurement schemes: direct absorption spectroscopy (DAS) and wavelength modulation spectroscopy (WMS). The sensor used an optical resonant cavity composed...

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Bibliographic Details
Main Authors: Ce Yang, Mingming Wen, Chen Chen, Chunguang Li, Jianyu Huang, Laiyong Song, Yu Li
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Applied Sciences
Subjects:
off-axis integrated cavity output spectroscopy
direct absorption spectroscopy
wavelength modulation spectroscopy
white noise perturbation
methane concentration
Online Access:https://www.mdpi.com/2076-3417/15/10/5562
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