【摘要】 分析了基于自发布里渊散射的温度和应变分布同时测量原理,针对已报导的外差检测和直接检测系统中存在的问题,提出了一种基于单通光纤Mach-Zehnder干涉仪(MZI)的双端差分检测布里渊温度和应变同时传感系统,通过理论分析证明了系统的可行性。该系统具有成本低,实现简单,可消除光源频率不稳定性干扰等特点,在分布式光纤温度和应变同时测量中具有广阔的应用前景。更多还原

【Abstract】 The theory of simultaneous measurement of temperature and strain based on Brillouin scattering is analyzed.By analyzing the problems of the present methods,an all fiber Mach-Zehnder interferometer differential detection system is proposed,which can measure temperature and strain simultaneously.Through analyzing the theory of the system,the feasibility of the system is proved.It has lots of merits,such as low cost,simple,stable and so on.These merits make it a prospective way to implement simultaneous measurement of temperature and strain.更多还原