广西师范大学学报（自然科学版）2025，Vol.43Issue(3)：35-42,8.DOI:10.16088/j.issn.1001-6600.2024060201
带涂覆层的长周期光纤光栅温度传感特性研究
Study on Temperature Sensing Characteristics of Long Period Fiber Grating with Coating Layer
摘要
Abstract
The influence of fiber coating on the temperature sensitivity of Long period fiber grating(LPFG)is theoretically analyzed.The transmission spectra of LPFG with and without a coating layer are simulated using numerical analysis,and the mode coupling process of LPFG for temperature sensing is analyzed.The results show that the larger the cladding mode order,the greater the effect of the coating layer on the effective refractive index of different cladding modes.Then it is inferred that the LPFG resonance peaks associated with different cladding modes have different temperature sensitivities.The coating layer protects the optical fiber and improves its mechanical strength.Still,more importantly,the coating layer can effectively enhance the temperature sensitivity of the transmission peaks coupled with higher-order cladding modes.At the same time,the results are useful for experimental studies of gratings prepared by retaining the coating layer and polymer-coated grating structures.关键词
长周期光纤光栅/温度特性/涂覆层/光纤传感Key words
long-period fiber gratings/temperature characteristics/coating layers/fiber-optic sensing分类
信息技术与安全科学引用本文复制引用
黄川洋,郭奎奎,陆航林,胡君辉,程灿儿,李松威,陈鸿东,张秋楠,张钊,邵来鹏,唐剑,王咏梅..带涂覆层的长周期光纤光栅温度传感特性研究[J].广西师范大学学报（自然科学版）,2025,43(3):35-42,8.基金项目
广西自然科学基金(2022GXNSFDA080006) （2022GXNSFDA080006）
广西研究生教育创新项目(XYCSR2024082) （XYCSR2024082）
国家自然科学基金(62265002,62165002) （62265002,62165002）
广西千名中青年高校骨干教师培养计划(2024KY0066,2022KY0044) （2024KY0066,2022KY0044）
广西核物理与核技术重点实验室开放项目(nlk2022-10) （nlk2022-10）
广西师范大学新工科研究与实践项目(2023JGXG04) （2023JGXG04）
光电信息获取与处理教育部重点实验室(安徽大学)(OEIAM202203) （安徽大学）
