激光技术Issue(5)：598-602,5.DOI:10.7510/jgjs.issn.1001-3806.2015.05.004
基于声光调制的逆向调制光通信系统研究
Research on modulating retro-reflector technology of laser communication systems based on acousto-optic modulation
徐山河 1肖沙里 1王珊 1彭帝永1
作者信息
- 1. 重庆大学光电工程学院光电技术及系统教育部重点实验室，重庆400044
- 折叠
摘要
Abstract
In order to expand the application fields of free space optical communication , a steady and practical communication system of retro-modulation was designed .Based on acousto-optic modulator ( AOM) and the reverse link of light , transistor-transistor logic gate level was send to control AOM by using field programmable gate arrays .By using quaternary modulation method combining binary frequency shift keying and binary pulse width modulation , by using the encryption and error correction methods of redundancy checking replacement and improved Hamming code , reverse modulation laser communication indoor was realized .The results show that serial communication rate of the communication system is 115.2kbit/s, high frequency carrier is 1MHz and bit error rate is less than 10 -6.Its confidentiality is good.While, it also proves that the maximum carrier wave of laser externally-modulated reverse communication system can reach about 5MHz.关键词
光通信/逆向调制/声光调制器/现场可编程门阵列/汉明码Key words
optical communication/retro-modulation/acousto-optic modulator/field programmable gate array/Hamming code分类
信息技术与安全科学引用本文复制引用
徐山河,肖沙里,王珊,彭帝永..基于声光调制的逆向调制光通信系统研究[J].激光技术,2015,(5):598-602,5.
