论文部分内容阅读
引言 光纤通信是通信史上又一次革命,其应用日益广泛。在短波长(0.8～0.9μm范围)光纤通信系统中,接收机通常采用硅雪崩光电二极管(APD)或硅PIN光电二极管。 D·R·Smith根据光电二极管和前置放大器参数,分析了PIN接收机和AFD接收机的噪声性能,指出把PIN光电二极管和一个输入电容低、漏电流小的FET前置放大器混合集成,可降低前置放大器的噪声,能显著改进PIN光电二极管接收机的灵敏
Introduction Optical fiber communication is another revolution in the history of communications and its application is increasingly widespread. In the short wavelength (0.8 ~ 0.9μm range) optical fiber communication system, the receiver usually adopts silicon avalanche photodiode (APD) or silicon PIN photodiode. RD Smith analyzes the noise performance of the PIN receiver and the AFD receiver based on the photodiode and preamplifier parameters and points out that the PIN photodiode can be mixed and integrated with a FET preamplifier with low input capacitance and low leakage current Reduce the preamplifier noise, can significantly improve PIN photodiode receiver sensitivity