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七十年代以来,由于光通信技术的高速发展,光纤传输技术开始突破通信的范畴,渗入到高电压测试及控制领域,显示了它独特的优越性。概括起来,有两大优点:抗干扰与安全。由光通信器件组成的传输系统一般可分成模拟及数字系统两种,而模拟系统又有直接式及调频式等不同形式。本文研究了直接式模拟系统,采用简单而有相当精度的热敏电阻补偿措施,选取了系统的合理工作参数,使系统的线性度好,响应时间为11ns,频率约为15MHz,可以满足快速暂态信号的测量,下面分别简述。
Since the 1970s, due to the rapid development of optical communications technology, optical fiber transmission technology has begun to break through the category of communications and infiltrate the field of high voltage testing and control, showing its unique superiority. To sum up, there are two major advantages: interference and safety. The transmission system composed of optical communication devices can generally be divided into two kinds of analog and digital systems, while the analog systems have different forms of direct type and frequency modulation type. In this paper, the direct simulation system is studied. The simple and reasonably accurate thermistor compensation method is adopted. The reasonable operating parameters of the system are selected so that the system has good linearity. The response time is 11ns and the frequency is about 15MHz, which can meet the requirements of fast Measurement of the state signal, briefly described below.