【摘要】 文中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 in this paper. 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 PIN optic signal can be detected and amplified effectively.更多还原