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一、前言34所是电子工业部唯一的光纤通信系统工程研究所,是国内研究光纤通信最早的单位之一,1979年成功地研制出国内最早的实用化功能齐全的8.448兆比/秒光信道机及光中继器。为了促进光纤通信在铁道上的应用,电子工业部34所与铁道部铁科院通号所于1980年6月在北京铁道科学院电气化环行试验段上成功地进行了10.35公里8.448兆比/秒数字光纤通信系统抗强电磁干扰现场试验。在这次现场试验的基础上,34所进一步完善了光纤数字传输系统的实用化功能,并于1981
I. Introduction 34 is the only institute for optical fiber communication systems engineering under the Ministry of Electronics Industry. It is one of the earliest institutes to study optical fiber communications in China. In 1979, it successfully developed the earliest practical and fully functional 8.448 Mb / s optical channel Machine and optical repeater. In order to promote the application of optical fiber communications in the railway, the Ministry of Electronics Industry and the Ministry of Railways ASTRI successfully conducted the 10.35 km 8.448 Mb / s digitization test at the Electrification Testing Section of Beijing Railway Academy in June 1980 Optical fiber communication system anti-strong electromagnetic interference field test. On the basis of the field test, 34 further improved the practical function of optical fiber digital transmission system and in 1981