Application of slant lens fiber in reflective optical fiber displacement sensor

YANG Rui-feng1,2, LANG Guo-wei1,2, GUO Chen-xia1,2, ZHANG Peng1,2, HU Chen-hao1,2, GAI Ting1,2

(1. School of Instrument and Electronics, North University of China, Taiyuan 030051, China；

2. Automatic Test Equipment and System Engineering Research Center of Shanxi Province，

North University of China, Taiyuan 030051, China)

Abstract： This paper introduces the application of a slant lens fiber in a reflective fiber optical displacement sensor, namely the receiving fiber use the slant lens fiber. Based on the characteristic formula expression of the intensity modulation of planar single fiber pair, a mathematic model of single fiber fair intensity modulation is established. After simulation experiment, the influence of fiber spacing, fiber core diameter and fiber numerical aperture on the modulation characteristics of the sensor is summarized.

Key words： slant lens fiber；  single fiber pair；  modulation function; fiber displacement sensor

CLD number： TP212Document code： A

Article ID： 1674-8042（2018）03-0302-05doi： 10.3969/j.issn.1674-8042.2018.03.013

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斜面透镜光纤在反射式光纤位移传感器中的应用

杨瑞峰1,2， 郎国伟1,2， 郭晨霞1,2， 张鹏1,2， 胡晨昊1,2， 盖婷1,2

（1. 中北大学 仪器与电子学院， 山西 太原 030051； 2. 山西省自动化检测装备与系统工程技术研究中心， 山西 太原 030051）

摘要:介绍了一种斜面透镜光纤在反射式光纤位移传感器中的应用， 即接收光纤采用斜面透镜光纤。 基于平面式单光纤对光强调制特性函数表达式， 建立了斜面接收光纤单光纤对光强调制特性的数学模型， 通过对调制特性函数的仿真实验， 得出了光纤间距、 光纤芯径和光纤数值孔径等参量对传感器调制特性的影响规律。

关键词:斜面透镜光纤； 单光纤对； 调制特性函数； 光纤位移传感器

引用格式：YANG Rui-feng, LANG Guo-wei, GUO Chen-xia, et al. Application of slant lens fiber in reflective optical fiber displacement sensor. Journal of Measurement Science and Instrumentation, 2018, 9(3)： 302-306. ［doi：10.3969／j.issn.1674-8042.2018.03.013］

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