【摘要】 介绍了一种新型应用于 FOCS (光纤电流传感器 )的 PIN光检测放大器的设计 ,并提出了一种新型的双 T型选频网络电路 ,对放大器各级的设计原理也进行了详细的理论分析。理论与实践都证明这种新型光检测放大器信噪比较高 ,能对微弱的 PIN光信号进行有效地检测和放大更多还原

【Abstract】 A novel PIN photo-detector amplifier used for FOCS (fiber-optic current sensor) is presented amd a new dual T-type frequency selecting network is also proposed The principles of design are analyzed in details Experimental results show that a high SNR is obtained and a weak signal can be detected and amplified effectively更多还原