用于超快诊断的3GHz模拟光纤传输系统

为了在复杂电磁环境下远距离传输超快脉冲电信号,采用电光转换法将超快脉冲电信号转化为光信号,光信号经数公里光纤传输,在光纤末端采用光电转换法恢复超快脉冲电信号,成功研制了宽频带模拟光纤传输系统.系统的性能指标频带宽度为(0.0003～3)GHz,带内平坦度为±1dB,线性动态范围为40dB(100倍),输出噪声峰峰值小于...

3GHz analog optical fiber transmission system applied in ultra-fast diagnosis

A broad-bandwidth analog optical fiber transmission system was developed for ultra-fast pulse signal transmission under the circumstance with complicated electromagnetic field. The ultra-fast pulse electric signal was converted to optical signal by means of electro-optic conversion. After several kilometers distance transmission, the optical signal was recovered by means of photo-electric conversion. The experimental measurement results of the system indicate that its bandwidth is (0.0003~3)GHz, in-band flatness is 1dB, linear dynamic range is 40dB(100 multiples), output peak-to-peak noise is less than 5mV, input standing-wave-ratio is less than 2. It's applied in high power microwave experiments. The results show that the 3GHz analog optical fiber transmission system which employs electro-optic and photo-electric conversion technology is suitable for ultra-fast pulse signals transmission in radiation field diagnosis.