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首页> 外文期刊>Optics Letters >Highly sensitive fiber optic temperature and strain sensor based on an intrinsic Fabry-Perot interferometer fabricated by a femtosecond laser
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Highly sensitive fiber optic temperature and strain sensor based on an intrinsic Fabry-Perot interferometer fabricated by a femtosecond laser

机译：高灵敏度光纤温度和应变传感器，基于由飞秒激光器制造的固有的法制术 - 珀罗干涉仪

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摘要

In this Letter, we report on a simple, but highly sensitive sensor based on two intrinsic Fabry-Perot interferometers (FPIs) inscribed in a standard single-mode optical fiber. A brief theoretical study on the Vernier effect is presented, in which a simulation of the sensitivity magnification factor dependence on the FPI's length is performed. Based on the simulation results, the FPIs were fabricated using a custom micromachining setup that integrates a near-infrared femtosecond laser and a motorized XYZ platform. Using the Vernier effect, sensitivities of 145 pm/mu epsilon and 927 pm/degrees C were obtained for strain and temperature, respectively. The sensor's performance combined with its versatile and customizable configuration allows real-time and in situ strain and temperature monitoring under harsh environments. (C) 2019 Optical Society of America
机译：在这封信中，我们在标准单模光纤中刻有两个固有的法布里 - 珀罗干涉仪（FPI）来报告简单但高度敏感的传感器。 提出了对Vernier效应的简要理论研究，其中执行对FPI长度的灵敏度放大因子的模拟。 基于仿真结果，使用自定义微机械设置来制造FPI，该设置集成了近红外飞秒激光器和电动XYZ平台。 使用Vernier效应，分别获得145μm/ muε和927μm/℃的敏感性，分别用于应变和温度。 该传感器的性能与其多功能和可定制的配置相结合，允许实时和在恶劣环境下的温度监测。 （c）2019年光学学会

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