OE  >> Vol. 7 No. 3 (September 2017)

    一种腐蚀增敏光纤迈克尔逊干涉型折射率传感器
    A Corrosion Enhancing Optical Fiber Michelson Interference Type Refractive Index Sensor

  • 全文下载: PDF(1769KB) HTML   XML   PP.95-102   DOI: 10.12677/OE.2017.73014  
  • 下载量: 400  浏览量: 672  

作者:  

李文宪,刘 倩,马彦华,丁小哲,李丽君:山东科技大学,电子通信与物理学院,山东 青岛;矿山灾害预防控制省部共建国家重点实验室培育基地,山东 青岛

关键词:
折射率传感细芯光纤迈克逊干涉腐蚀Refractive Index Sensing Thin-Core Fiber Michelson Interference Corrosion

摘要:

本文利用细芯光纤(TCF)并基于迈克尔逊干涉原理制备了折射率传感器。该传感器采用两段单模光纤(SMF)中间熔融一段细芯光纤,形成迈克尔逊干涉结构。该结构由于单模与细芯光纤的纤芯不匹配,使得在第1个熔接点处激发出包层模式,并在第2个熔接点处与纤芯模耦合发生干涉,实验结果显示随着折射率的增加干涉条纹发生蓝移。接着我们为了增强传感器的灵敏度又对细芯光纤进行腐蚀,腐蚀之后与之前相比发现,在低折射率条件下,折射率与波长变化呈现很好线性关系,对比腐蚀前传感器性能有了很大的提高。实验最终结果显示,在高折射率区1.42~1.4435范围内,折射率在长波长处最高达到−564.09 nm/RIU,并且第二、三和四个波段处灵敏度与未腐蚀前相比分别提高了0.9655、0.71和0.7倍。

In this paper, a refractive index sensor based on Michelson interference principle is fabricated by using thin-core fiber (TCF). The sensor uses a two-stage single-mode fiber (SMF) in the middle of melting a thin-core fiber to form Michelson interference structure. The cladding mode is excited at the first fusion point and the interference occurs at the second fusion point. The experimental results show that with the increase of the intensity of the core, the increase of the refractive index causes the interference fringe to be blue-shifted. Then, in order to enhance the sensitivity of the sensor, we have corroded the thin-core fiber . After the etching, it is found that under the low refractive index, the refractive index has a good linear relationship with the wavelength. Compared with the pre-corrosion sensor, the sensor performance which after the corrosion has been greatly improved. The experimental results show that the refractive index reaches -564.09 nm/RIU at the long wavelength in the high refractive index region of 1.42-1.4435, and the sensitivity at the second, third and fourth bands was increased by 0.9655, 0.71 and 0.7 times, respectively, compared with that before the non-etching.

文章引用:
李文宪, 刘倩, 马彦华, 丁小哲, 李丽君. 一种腐蚀增敏光纤迈克尔逊干涉型折射率传感器[J]. 光电子, 2017, 7(3): 95-102. https://doi.org/10.12677/OE.2017.73014

参考文献

[1] Chen, J.P., Zhou, J. and Shu, L. (2013) High-Sensitivity Mach-Zehnder Interferometer Refractive Index Sensor Based on Clad-ding-Etched Fiber. Opto-Electronic Engineering, 40, 52-56.
[2] 白春河, 罗云瀚, 陈哲, 等. 基于侧边抛磨光纤倏逝场的折射率传感特性[J]. 光子学报, 2013, 42(10): 1182-1186.
[3] 张桂娜, 袁雪梅. SMS光纤结构用于液体折射率测量的特性[J]. 电子质量, 2016(6): 78-85.
[4] 宋海峰, 龚华平, 等. 基于波长与强度双解调的光纤温度传感器[J]. 光电子激光, 2013, 24(9): 1694-1697.
[5] 刘凡凡. SMS结构光纤温度传感器[D]: [硕士学位论文]. 杭州: 浙江大学, 2013.
[6] 苏丹. 基于保偏光纤的应变传感器研究[D]: [硕士学位论文]. 西安: 西北大学, 2015.
[7] 王栋远, 孙明明, 金永兴, 等. 同时测量温度和曲率的光纤传感器[J]. 光子学报, 2015, 44(11): 20-24.
[8] 傅海威, 闫旭, 李辉栋, 邵敏, 等. 基于纤芯失配型马赫–曾德尔光纤折射率和温度同时测量传感器研究[J]. 光学学报, 2014, 34(11): 58-63.
[9] 高平安, 荣强周, 孙浩, 忽满利, 等. 纤芯失配熔接的高灵敏度光纤折射率传感器[J]. 应用光学, 2013, 34(3): 542-546.
[10] 谢灵骁, 张信普, 李丽霞, 彭伟, 等. 基于弯曲光纤的折射率传感器研究[J]. 光电子激光, 2016, 27(3): 247-252.
[11] 李辉栋, 傅海威, 邵敏, 等. 基于光纤气泡和纤芯失配的Mach-Zehnder干涉液折射率传感器[J]. 物理学报, 2013, 62(2): 65-71.