Five-wavelength laser interferometry for the demodulation of dual-cavity extrinsic Fabry–Perot interferometric sensors

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-06-09 DOI:10.1016/j.optlastec.2025.113286

Yang Han , Yi Jiang , Jingshan Jia , Yutong Zhang

引用次数: 0

Abstract

In this paper, a five-wavelength passive demodulation algorithm is proposed and experimentally demonstrated. The performance of the proposed technique is verified in the dual-cavity extrinsic Fabry–Perot interferometer. The experimental results show that a 100 Hz sinusoidal signal can be successfully demodulated in dual-cavity extrinsic Fabry–Perot interferometric sensors with one initial cavity lengths of 110.9375 µ m and 542.0920 µ m, respectively. At the same time, the displacements of 55.1043 µ m and 69.4655 µ m occurred in the one cavity of the dual-cavity interferometer are successfully demodulated by this algorithm. It shows that the technique can be used for high-speed demodulation of dual-cavity interferometers.

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双腔外源法布里-珀罗干涉传感器解调的五波长激光干涉

本文提出了一种五波长无源解调算法，并进行了实验验证。在双腔外源法布里-珀罗干涉仪中验证了该技术的性能。实验结果表明，在初始腔长分别为110.9375µm和542.0920µm的双腔法布里-珀罗干涉传感器中，可以成功解调100 Hz的正弦信号。同时，双腔干涉仪的一个腔内发生的55.1043µm和69.4655µm的位移通过该算法成功解调。结果表明，该技术可用于双腔干涉仪的高速解调。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems