摘要
布里渊功率和应变的关系是分布式布里渊光纤温度和应变传感的基础之一.根据耦合方程,得出了布里渊信号的表达式.再根据布里渊增益系数的表达式,推导了布里渊增益系数和应变的关系.以此为基础,得出了布里渊功率和应变的关系.计算机仿真显示,布里渊功率应变系数随着传感距离的增大而减小.
The relation between the power of Brillouin signal and strain is one of the bases of distributed fiber temperature and strain sensors based on Brillouin scattering. The expression of the Brillouin signal is obtained by coupling equations, and the relation between the Brillouin gain coefficient and the strain is obtained by the expression of Brillouin gain coefficient. Based on these analyses, the coefficient relating the power of Brillouin signa! to strain is obtained. The simulation indicates the coefficient relating the power of Brillouin signal to strain decreases with the distance from the pulsed pump wave and the end of the fiber.
出处
《传感技术学报》
CAS
CSCD
北大核心
2006年第6期2553-2555,共3页
Chinese Journal of Sensors and Actuators
基金
江西省教育厅项目资助(DB200608108)
无损检测技术教育部重点实验室开放基金资助
江西省测试技术与控制工程研究中心资助(ZX200304002)
关键词
分布式光纤传感
布里渊散射
布里渊增益
功率应变系数
distributed fiber sensor
Brillouin scattering
Brillouin gain coefficient
coefficient relation the power to strain
