摘要
以波长为632.8nm的激光为光源,以重火石玻璃(ZF6)作为敏感元件设计了一种光弹光纤加速度计.由于加速度a的变化产生光强的变化,故利用偏振光干涉原理测出出射光强、利用差动原理处理数据,则可测得加速度a.该仪器的主要设计参数:自然频率fn=1056Hz,相位检测灵敏度ΔΦ/a=1.83×10-3rad/(m·s-2),工作频带为0～317Hz.
A photoelastic fiber optic accelerometer which has a 632.8 nm wavelength laser as the lamphouse and taking ZF6 glass as the sensing element is described. Because the change of acceleration causes the change of intensity, the acceleration can be got by measuring output intensity with the interference of polarization beams and dealing data with differential principles. The main parameters of the accelerometer are nature frequency (f_n) of 1 056 Hz,phase detect sensitivity (ΔΦ/a) of 1.83×10^(-3) rad/(m·s^(-2)), and frequency range extending from 0 to 317 Hz.
出处
《天津工业大学学报》
CAS
2004年第3期61-64,共4页
Journal of Tiangong University
基金
国家自然科学基金资助项目 (498740 3 1 )
关键词
光弹效应
加速度计
偏振光干涉
photoelasticity
accelerometer
polarization optical interference
