基于CO2激光技术的双峰谐振长周期光纤光栅折射率传感器
Dual-Peak Resonance Long-Period Fiber Grating Refractive Index Sensor Based on CO2 Laser Technology
赵爽 1杜超 2王秋雨 1贾斌 1张丽 1崔丽琴 1邓霄3
作者信息
- 1. 太原理工大学物理与光电工程学院,山西太原030024
- 2. 太原理工大学物理与光电工程学院,山西太原030024;山西大学量子光学与光量子器件国家重点实验室,山西太原030006
- 3. 太原理工大学物理与光电工程学院,山西太原030024;太原理工大学新型传感器与智能控制教育部和山西省重点实验室,山西太原030024
- 折叠
摘要
为了探索一种高灵敏折射率传感器,基于CO2激光技术制备出双峰谐振长周期光纤光栅(LPFG).首先,利用CO2激光器在腐蚀包层后的传统单模光纤和80 μm弯曲不敏感光纤上制备出周期分别为196 μm和73μm的双峰谐振LPFG,证明了采用CO2激光微加工技术在单模光纤上制备短周期LPFG的可能性.其次,利用CO2激光器直接在2种80μm单模光纤上制备出周期分别为110 μm和115 μm的双峰谐振LPFG.实验结果表明:在2种80 μm单模光纤上制备的LPFG具有谐振损耗大,插入损耗小和折射率灵敏度高等优点.基于以上优点,采用CO2激光技术制备的双峰谐振LPFG在生物、化学及环境参数检测等重要领域的应用具有较大潜力.同时,也提供了一种操作简单、低成本制备双峰谐振LPFG的方法.
Abstract
A dual-peak resonance long-period fiber grating(LPFG)based on CO2 laser technology is proposed to investigate a highly sensitive refractive index sensor.First,dual-peak resonance LPFGs with grating periods of 196 and 73 μm are fabricated in conventional single-mode fiber and 80 μm bend-insensitive single-mode fiber,respectively,using a CO2 laser after etching cladding.This demonstrates the possibility of fabricating an LPFG on a single-mode fiber with a shorter grating period using CO2 laser micromachining technology.Dual-peak resonance LPFGs with grating periods of 110 and 115 μm are directly fabricated in two 80 μm single-mode fibers using a CO2 laser.The results show that the dual-peak resonance LPFGs fabricated in two 80 μm thin single-mode fibers exhibit advantages of deep attenuation loss,low loss,and high refractive index sensitivity.Based on its excellent performance,the dual-peak resonance LPFG based on CO2 laser technology is a prospective sensor applicable to fields such as biological,chemical,and environmental parameter detection.In addition,a simple-operation low-cost method for fabricating dual-peak resonance LPFGs is proposed.
关键词
光纤光学/长周期光纤光栅/双峰谐振/CO2激光技术/折射率Key words
fiber optics/long period fiber grating/dual-peak resonance/CO2 laser technology/refractive index引用本文复制引用
基金项目
国家自然科学基金(62203320)
国家自然科学基金(52009088)
中国博士后科学基金面上项目(2019M661063)
量子光学与光量子器件国家重点实验室开放课题(KF202210)
山西省科技厅面上青年基金(201901D211073)
山西省社会发展重点研发计划(201903D321001)
山西省高等学校科技创新项目(2019L0198)
出版年
2024
NETL
NSTL
万方数据