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A novel temperature insensitive refractive index sensor based on dual photonic crystal fiber
Optik Pub Date : 2020-09-09 , DOI: 10.1016/j.ijleo.2020.165495
Yongfeng Wu , Bo Liu , Jin Wang , Jing Wu , Yaya Mao , Jianxin Ren , Lilong Zhao , Tingting Sun , Tong Nan , Yang Han , Xueyang Liu

A novel dual photonic crystal fiber (DPCF) temperature insensitive refractive index sensor is proposed in this article. By sequentially splicing lead-in SMF (single mode fiber), PCF_1, PCF_2, and lead-out SMF constitute the Mach-Zehnder interferometer (MZI). The refractive index sensitivity (RIS) of the proposed sensor is improved by making an abrupt-taper on the fusion point of two PCFs. The proposed sensor is compared with a sensor without an abrupt-taper, the RIS value of the proposed sensor is increased by ∼1.9 times. The collapsed area of two photonic crystal fiber air holes is used as a beam splitter and combiner of Mach-Zehnder interferometer. Experimental analysis indicates that the RIS is 152.97 nm/RIU (1.330–1.383 RIU). Besides, the proposed sensor is independent of temperature and its sensitivity towards temperature is only -0.0045 nm/°C (30−80 °C). This sensor has the characteristics of relatively high sensitivity, ease of fabrication, and compact size.



中文翻译:

基于双光子晶体光纤的新型温度不敏感折射率传感器

本文提出了一种新型的双光子晶体光纤(DPCF)温度不敏感折射率传感器。通过依次拼接引入的SMF(单模光纤),PCF_1,PCF_2和引出的SMF构成了马赫曾德尔干涉仪(MZI)。通过在两个PCF的融合点上形成一个尖锥,可以提高所提出传感器的折射率灵敏度(RIS)。将拟议的传感器与不带锥度的传感器进行比较,拟议的传感器的RIS值提高了约1.9倍。两个光子晶体光纤气孔的塌陷区域用作Mach-Zehnder干涉仪的分束器和合成器。实验分析表明,RIS为152.97 nm / RIU(1.330–1.383 RIU)。此外,所提出的传感器与温度无关,并且其对温度的灵敏度仅为-0。0045 nm /°C(30-80°C)。该传感器具有相对较高的灵敏度,易于制造以及尺寸紧凑的特征。

更新日期:2020-09-09
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