Free-space optical communication by retromodulation: concept, technologies, and challenges
Free-space optical communication by retromodulation: concept, technologies, and challenges
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DOI：
10.1117/12.582754
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发表时间：
2004-12
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通讯作者：
M. Achour
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文献类型：
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作者：
M. Achour
采用反向调制的FSO通信是一种在光收发器和半无源单元之间传输信息的创新方式，半无源单元反射由调制反向反射器(MRR)表示的信号。这一概念与典型的FSO通信系统完全不同，该通信系统由两个工作在全双工模式下的收发器组成。在本文中，我们回顾了这一新概念，分析了折叠路径传播对大气的影响，评估了适用于这些应用的不同光调制器技术及其对系统性能的影响，并将分析结果与通常实现的有源智能RFID标签进行了比较。
FSO communication by retro-modulation is an innovative way to convey information between an optical transceiver and a semi-passive unit that reflects signals denoted by Modulating Retro Reflector (MRR). This concept is completely different from typical FSO communication systems consisting of two transceivers operating in full-duplex mode. In this paper, we review this new concept, analyze atmospheric effects due to folded paths propagation, evaluate different optical modulator technologies suitable for these applications and their impacts on system performance, and compare analysis results to the commonly implemented active intelligent RFID tags.