1 km大气激光通信系统非光域外差检测的实验研究

doi:10.3969/j.issn.0255-8297.2014.04.007

应用科学学报 ›› 2014, Vol. 32 ›› Issue (4): 379-384.doi: 10.3969/j.issn.0255-8297.2014.04.007

1 km大气激光通信系统非光域外差检测的实验研究

柯熙政，陈锦妮

西安理工大学自动化与信息工程学院，西安710048

收稿日期:2013-09-06 修回日期:2014-01-17 出版日期:2014-07-31 发布日期:2014-01-17
作者简介:柯熙政，教授，博导，研究方向：大气激光通信及信号处理，E-mail：xzke@263.net
基金资助:
国家自然科学基金(No.61377080)；陕西省“13115”科技统筹计划基金(No.2011KTCQ01-31)；陕西省教育厅产业化培育基金(No.2010JC17)；西安市科技成果转换基金(No.CX12165)；陕西省自然科学基础研究计划基金(No.2013JQ8011)；陕西省教育厅科研计划基金(No.2013JK1104)资助

Experimental Investigation on Non-optical Heterodyne Detection Technology of 1 km Atmospheric Laser Communication System

KE Xi-zheng, CHEN Jin-ni

Faculty of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048, China

Received:2013-09-06 Revised:2014-01-17 Online:2014-07-31 Published:2014-01-17

摘要/Abstract

摘要： 相干光通信以较高的检测灵敏度引起了人们的重视，但因工程实现困难等问题而限制了该技术的应用.为此，提出了一种新的外差检测方法，利用发送端副载波调制和接收端副载波实现外差，提高了无线激光通信系统的检测灵敏度. 实验结果表明, 副载波调制/非光域外差检测方式具有接近20 dB 的外差增益，且误码率特性也优于直接检测.

关键词: 光通信, 副载波, 外差检测, 外差增益

Abstract: Coherent optical communication attracts research interest due to its high detecting sensitivity.However, its application is limited by factors such as practical implementation. This paper presents a new heterodyne detection method that realizes frequency mixing of the sender subcarrier and the receiver subcarrier
to improve detection sensitivity of the wireless laser communication system. The experimental results show that the subcarrier modulation/non-optical heterodyne detection system has nearly 20 dB heterodyne gain and better error rate than direct detection.

Key words: heterodyne gain, optical communications, subcarrier, heterodyne detection

中图分类号:

TN929.12

柯熙政，陈锦妮. 1 km大气激光通信系统非光域外差检测的实验研究[J]. 应用科学学报, 2014, 32(4): 379-384.

KE Xi-zheng, CHEN Jin-ni. Experimental Investigation on Non-optical Heterodyne Detection Technology of 1 km Atmospheric Laser Communication System[J]. Journal of Applied Sciences, 2014, 32(4): 379-384.

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1 km大气激光通信系统非光域外差检测的实验研究

Experimental Investigation on Non-optical Heterodyne Detection Technology of 1 km Atmospheric Laser Communication System

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