A short-range quasi-distributed strain and temperature sensing system utilizing a standard telecom laser diode

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2024-10-09 DOI:10.1016/j.optlastec.2024.111919

Jure Javornik, Denis Đonlagić

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引用次数: 0

Abstract

This article presents a short-range fiber-optic quasi-distributed sensing device suitable for strain and temperature measurement. The sensing assembly consists of an fs laser inscribed reference mirror and a sensing array of equidistantly positioned mirrors. Utilization of the reference mirror and proper sensor geometry selection provides the possibility for a high-resolution spectral interrogation of the sensing array while relying on an ordinary, cost-effective distributed feedback (DFB) telecom laser diode. Beside the telecom DFB diode, the entire interrogation system includes only an additional detector, optical coupler, analog interface and a microcontroller. Measurement resolution better than 1 µε was demonstrated experimentally at a sampling rate exceeding 65 samples per second, while utilizing a sensing device with a typical length of 50 mm and spatial resolution of approximately 2 mm. To demonstrate the application potential of the proposed measuring device, a few different packages and sensor configurations were demonstrated and tested, including a system for tactile sensing applications and a short-range quasi-distributed temperature measurement probe.

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利用标准电信激光二极管的短程准分布式应变和温度传感系统

本文介绍了一种适用于应变和温度测量的短程光纤准分布式传感装置。传感组件包括一个 fs 激光刻划参考镜和一个由等距定位镜组成的传感阵列。利用参考镜和适当的传感几何形状选择，可以对传感阵列进行高分辨率光谱检测，同时依靠一个普通的、具有成本效益的分布式反馈（DFB）电信激光二极管。除了电信 DFB 二极管外，整个询问系统只包括一个额外的探测器、光耦合器、模拟接口和微控制器。实验证明，利用典型长度为 50 毫米、空间分辨率约为 2 毫米的传感设备，在采样率超过 65 个样本/秒的情况下，测量分辨率优于 1 µε。为了证明拟议测量设备的应用潜力，对一些不同的封装和传感器配置进行了演示和测试，包括一个触觉传感应用系统和一个短距离准分布式温度测量探头。

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