摘要
提出并研究了空芯光子带隙光纤中表面模共振耦合效应和高温传感特性。实验上观测到光子带隙光纤中的表面模耦合效应,理论上诠释了该效应的产生原理。通过表面模耦合效应,对在光纤透射光谱中形成的多个共振峰进行温度和应变传感实验,观察到独特的温度和应变传感特性:共振峰在20~150℃之间低温不敏感,在150~260℃之间高温强度敏感。在150~260℃之间的温度敏感度达到-0.26 dB/℃,同时各处波长对温度不敏感;共振峰的强度和波长对应变不敏感。该空芯光子带隙光纤传感器解决了温度-应变之间交叉敏感的问题,可以有效实现高温环境下的强度实时检测,具有结构简单、使用方便等众多优点。
Surface-mode resonance coupling effect and high-temperature sensing characteristics of hollow-core photonic bandgap fibers are proposed and studied herein. The surface-mode coupling effect in the photonic bandgap fibers was observed experimentally, and the generation principle of the effect was theoretically explained. Multiple resonance peaks were formed in the fiber transmission spectrum, were subjected to temperature-and strain-sensing experiments, and unique temperature and strain sensing characteristics were observed. The resonance peak was insensitive to low temperatures between 20 ℃ and 150 ℃, whereas it was sensitive to high temperature between 150 ℃ and 260 ℃. This temperature sensitivity observed between 150 ℃ and 260 ℃ reached-0.26 dB/℃. Simultaneously, the wavelength of each part was insensitive to temperature, and the intensity and wavelength of the resonance peak were insensitive to strain. The hollow-core photonic bandgap fiber sensor addressed the temperature-strain cross-sensitivity problem, effectively can realize real-time intensity detection in a high-temperature environment, and has many advantages, including a simple structure and ease of use.
作者
游永
郭慧毅
李伟
柯一礼
段少祥
王志
刘艳格
You Yong;Guo Huiyi;Li wei;Ke Yili;Duan Shaoxiang;Wang Zhi;Liu Yange(Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology,Institute of Modern optics,Nankai University,Tianjin 300350,China;Fiberhome Communication Technology Co.,Ltd.,Wuhan,Hubei 430074,China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2021年第13期41-48,共8页
Acta Optica Sinica
基金
国家自然科学基金(61835006,61775107)。
关键词
光纤光学
空芯光子带隙光纤
光纤传感器
温度传感器
fiber optics
hollow-core photonic bandgap fiber
fiber sensing
temperature sensor
