高频CO_2激光脉冲写入的掺硼长周期光纤光栅温度应变特性  

Temperature and Strain Characteristic of Long Period Fiber Grating(LPFG) Induced by High Frequency CO_2 Laser Pulses

作　　者：刘兴晨[1] 饶云江[1] 冉增令 汪文华[1] 

机构地区：[1]电子科技大学光纤传感与通信教育部重点实验室,成都610054

出　　处：《河南师范大学学报（自然科学版）》2011年第3期43-46,共4页Journal of Henan Normal University(Natural Science Edition)

基　　金：教育部重点基金(104210)

摘　　要：高频CO2激光脉冲写入的长周期光纤光栅(LPFG)对温度比较敏感、应变不敏感,通常应用在温度传感器做温度测量.普通长周期光纤光栅温度灵敏度只有0.052 nm.℃-1,而用掺硼光纤制作的长周期光纤光栅温度灵敏度达到0.171 nm.℃-1,比普通长周期光纤光栅更加灵敏.因而应用在温度传感提高了传感器的灵敏度以及测温精度.本文利用高频CO2激光脉冲写入法在B-Ge光纤上写入,并从理论和实验上就其温度、应变特性进行了全面的研究.In this paper,temperature and strain characteristic of long period fiber grating(LPFG) induced by high frequency CO2 laser pulses is theoretically and experimentally studied.By the characteristic of higher temperature sensitivity and lower strain sensitivity,it is usually implemented as temperature sensor.The temperature sensitivity of B-doped LPFG is 0.171 nm·℃-1 while the temperature sensitivity of an ordinary LPFG is 0.052 nm·℃-1.Thus it can enhance the sensitivity and precision of temperature sensor.

关 键 词：B-Ge光纤 长周期光纤光栅 光纤传感 温度特性 应变特性 

分 类 号：N55[自然科学总论] G658.3[文化科学—教育学]