可调谐长周期光纤光栅压力传感的实验研究  

Study on sensing characteristics of tunable long-period fiber gratings imprinted by mechanical pressure

作　　者：侯尚林[1,2] 黄海宇[2] 黄永清[2] 张霞[2] 任晓敏[2] 

机构地区：[1]兰州理工大学理学院,甘肃兰州730050 [2]北京邮电大学教育部光通信与光波技术重点实验室,北京100876

出　　处：《光电子．激光》2009年第4期443-446,共4页Journal of Optoelectronics·Laser

基　　金：国家重点基础研究发展计划"973"资助项目(2003CB314906);甘肃省自然科学基金项目(3ZS062-B25-036);兰州理工大学优秀青年教师培养计划资助项目

摘　　要：采用超连续谱做宽带光源和金属凹槽板施加周期性压力,在普通单模光纤上产生了长周期光纤光栅(LPG),测定了脉冲透射谱深度和压力的关系。实验表明,在0～60N范围内,压力和透射谱深度有很好的线性关系,线性度达到0.9915,灵敏度达到0.2dB/N。A long-period grating(LPG) in conventional fiber was imprinted by mechanical pressure using flat broadband supercontinuum as light source and a metal groove plate on which tunable period can be produced,and the relationship between the depth of pulse transmitted spectrum and the pressure was investigated.The experimental results show that when the pressure varies between 0 and 60 N,the linearity degree of the pressure-transmission peak attenuation curve reaches 0.991 5 and the sensitivity is 0.2 dBm/N.

关 键 词：压力传感 机械压力法 光纤光栅 

分 类 号：TN253[电子电信—物理电子学]