| 吕宗璟,盛亮,张雁霞,田耕,阮林波,陈彦丽,罗通顶.脉冲辐射探测信号模拟光纤传输系统[J].光电子激光,2019,30(9):906~911 |
| 脉冲辐射探测信号模拟光纤传输系统 |
| Analog optical fiber transmission system appliedin pulsed radiation detection |
| 投稿时间：2019-01-07 |
| DOI： |
| 中文关键词: 辐射探测 模拟光纤传输系统 电光转换和光电转换 DFB 激光器 PIN 型光电二极管 |
| 英文关键词:radiation detection analog optical fiber transmission system electro-optic and photo-electric conversions semiconductor laser diode PIN detector |
| 基金项目:国家自然科学基金(11605141)和强脉冲辐射环境模拟与效应国家重点实验室基金(SKLIPR1501Z；SKLIPR1502Z)资助 项目 (西北核技术研究院 强脉冲辐射环境模拟与效应国家重点实验室,陕西 西安 710024) |
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| 中文摘要: |
| 为实现极端实验环境下脉冲辐射探测信号的远距离 传输,采用电光转换和光电转换的方法设计了 一套模拟光纤传输系统。该系统基于DFB激光器的强度直接调制特性实现了电光转换；以运 算放大器为主 体构建了激光器驱动电路；利用专用集成芯片MAX1968实现了激光器 半导体PN结的无死区温度控制。为 提高系统测试精度,光接收端采用带有暗电流校正的平衡PIN 前置放大器将光信号还原为电 信号,以提高 系统动态范围。最后,实验测试了系统性能指标。结果表明,系统的－3dB带宽为DC~155 MHz,线性动态 范围> 40 dB(100倍),输出噪声峰-峰值<3mV。该系 统适用于对传输带宽、安全性等要求高的科学研究中。 |
| 英文摘要: |
| An analog optical fiber transmission system was developed for pulse signal transmission.The pulse electric signal was converted to optical signal by means of electro-optic conversion.After long distance transmission,the optical signal was recovered b y means of photo-electric conversion.The focus of the paper is on the modulation mode of the laser,the temperature control technique without dead zone and the balanced-PIN detector w ith dark current correction.The experimental measurement results of the system indicate that its bandwidth is DC~155MHz,linear dynamic range is 40dB,output peak-to-peak noise is less tha n 3mV.The results show that the system is suitable for scientific research with high requi rements on transmission bandwidth and security. |
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