【摘要】 介绍了集成光学芯片、光纤质量块简谐振子和可编程片上系统(SOPC)混合集成光学加速度计的设计方法.采用基于3×3耦合器的干涉系统进行光相位的调制.研究了在非对称情况下的解调算法,从而解决了由于非对称性造成解调结果失真的问题.应用SOPC技术设计和实现数字信号处理系统,实现信号处理与数据传输的并行工作,实验证明该系统可以实时、线性地跟踪到加速度信号.实际测量灵敏度为4.62V/gn,工作频带为1-1066Hz.更多还原

【Abstract】 It is described that the hybrid-integrated optical accelerometer is made of integrated opotical chip, the harmonic oscillator composed of fiber optic proof mass and system programmable on chip. The optical phase is modulated by the interferometric system of 3×3 coupler. The asymmetry demodulated arithmetic is researched, thus the problem of distortion is resolved, which is arose by asymmetry coupler.Finally the digital signal proseccing system is designed with SOPC technology. And DSP and data communication run in parallel .When practically measured, a real time and linear acceleration signal is detected. The practical sensitivity is 4.62V/gn and the system works between 1Hz and 1066Hz.更多还原