半导体光电, 2020, 41 (2): 191, 网络出版: 2020-06-17  

基于纺锤型空气腔的光纤马赫-曾德尔折射率传感器

Optical Fiber Mach-Zehnder Refractive Index Sensor Based on Spindle Air Cavity
作者单位
南京信息工程大学 电子与信息工程学院, 南京 210044
摘要
设计了一种基于光纤纺锤型空气腔的三明治结构全光纤马赫-曾德尔折射率传感器。纺锤型空气腔是通过普通单模光纤和光子晶体光纤熔接后再拉锥形成的。锥区的纺锤型空气腔和包层分别作为参考臂和传感臂, 从而形成马赫-曾德尔干涉。基于FDTD Solutions和COMSOL仿真软件分别对传感器的干涉条纹及锥区电场分布进行了仿真, 得到了折射率传感器干涉条纹波谷波长和有效折射率与环境折射率的关系。当环境折射率为1.36~1.37和1.37~1.38时, 灵敏度分别为1377.6和1436nm/RIU。此传感器具有极短的干涉臂, 能够降低损耗, 且具有较高的折射率灵敏度。
Abstract
A sandwich-structured all-fiber Mach-Zehnder refractive index sensor based on a spindle-type air cavity was designed. The spindle-type air cavity was manufactured by splicing and taper acommon single-mode optical fiber and a photonic crystal fiber. The spindle-type air cavity and cladding in the taper area serve as the referring and sensing arms respectively, then the Mach-Zehnder interference is established. The interference fringes of the sensor and the electric field distribution in the taper area were simulated respectively based on FDTD Solutions and COMSOL. The relationship between the trough wavelength of the index sensor and the environmental refractive index, the effective refractive index and the environment refractive index are obtained by simulations. The sensitivity is 1377.6 and 1436nm/RIU when the refractive index is 1.36~1.37 and 1.37~1.38 respectively.The extremely short interference arm is used to reduce the loss and the sensor has higher refractive index sensitivity.

戴洋, 王婷婷, 孙家程, 王菲, 花文栋. 基于纺锤型空气腔的光纤马赫-曾德尔折射率传感器[J]. 半导体光电, 2020, 41(2): 191. DAI Yang, WANG Tingting, SUN Jiacheng, WANG Fei, HUA Wendong. Optical Fiber Mach-Zehnder Refractive Index Sensor Based on Spindle Air Cavity[J]. Semiconductor Optoelectronics, 2020, 41(2): 191.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!