| 一种性能优良的光纤传输中继机 |
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| 引用本文： | 陆荣春.一种性能优良的光纤传输中继机[J].光通信技术,1989(2). |
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| 作者姓名： | 陆荣春 |
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| 作者单位： | 上海科技大学无线电系 |
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| 摘 要： | 本文介绍一种性能优良的传输全电视信号的实用光纤传输中继机及它的工作原理、性能和指标测量。其性能符合《电视视频通道测试方法》规定的主要指标。经现场试验,该中继传输系统传送一路彩色全电视信号,可延伸传输距离大于20km(光纤损耗0.8dB/km),富余量7dB,传输性能优良,图象清晰逼真,伴音保真度高。
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| 关 键 词： | 中继机 脉冲频率/光强调制 指标测量 视频信噪比 接收灵敏度 频响 |
A FIBER OPTIC REPEATER WITH EXCELLENT PERFORMANCE |
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| Lu Rongchun.A FIBER OPTIC REPEATER WITH EXCELLENT PERFORMANCE[J].Optical Communication Technology,1989(2). |
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| Authors: | Lu Rongchun |
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| Affiliation: | Radio Department of Shanghai Science and Technology University |
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| Abstract: | This paper introduces a practical fiber optic transmission repeater which can transmit full TV signals and its working principle, specifications and measurement The opto-electro devices are PIN/FET and LD modules Its modulating method is PFM/IM. Acording to field trial. this repeater transmission system transmit oneroute color full TV signal,its transmission distance can be greater than 20km(fiber loss is 0.8dB/km),the margin is 7dB The transmission quality is excellent. The pattern is clear and the sound fidelity is high. |
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| Keywords: | repeater pulse frequence modulation/intensity modulation(PFM/IM) indexes measurement vision signal noise ratio receiving sensitivity frequence responce |
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