Refractive Index Sensors Based on a Chirped Core Long-Period Fiber Grating

被引：0
|
作者：
Chen, Jiong [1 ,2 ]
Cui, Suochao [2 ]
Zhang, Shuo [2 ]
Liu, Aidong [1 ,2 ]
机构：
[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
[2] Huazhong Inst Electroopt, Wuhan 430223, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2024年 / 36卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Optical fiber sensors; Sensors; Sensitivity; Claddings; Splicing; Mechanical sensors; Refractive index; Multimode fiber; fiber sensor; refractive index measurement;
D O I：
10.1109/LPT.2024.3396859
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A compact RI sensor with a high sensitivity basedon LPFG is designed and experimentally confirmed. The pro-posed sensor is realized by splicing different fibers, whichgives it stable mechanical performance. The simulation resultsindicate that, at short lengths, a high sensitivity is achievedby optimizing the strength of the evanescent field. Consistentwith the simulation results, the sensor demonstrated a high RIsensitivity (>600 nm/RIU in 1.42) and a compact size (about2.7 mm) in the experiment. The temperature response of thesensor is 19 pm/degrees C at the range of 26-90 degrees C. The compact sizeand high RI sensitivity give this LPFG a competitive advantage invarious refractive index measurement engineering applications.
引用
收藏
页码：771 / 774
页数：4
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