Research of Fine Tracking and Signal Detection System Based on QD without Beacon

摘要：

In this paper, we propose a simultaneous fine tracking and signal detection subsystem based on QD (Quadrant Detector) for FSO (Free Space Optical communication) system in 1550nm without beacon. Then we test the sensitivity, resolution, SNR characteristics and the influence the size of light spot on QD by building an indoor experiment. We select 1550nm waveband which suffers relatively less from background radicalization and atmospheric channel as the waveband of transmitter and receiver, also our selection catered for the trend of FSO system. We use the same QD for both fine tracking and signal detection for FSO in our design. Besides we use the scheme without beacon beam, for which we reduce the use of a beacon laser source, so we can obtain weight reduction and size decrease which is very important for FSO system.

关键词： free space optical communication (FSO) fine tracking quadrant detector(QD) 1550nm

作者: Shihui Liu Shoufeng Tong Yansong Song Yan Dong Han Yang

作者单位: National Defence Key Study Laboratory of Air to Ground Laser Communication Technique Changchun Unive Quartermaster research institute of GLD PLA Beijing, China

会议类型: 国际会议

会议名称: 2012 International Conference on Optoelectronics and Microelectronics(2012光电子与微电子国际学术会议 2012 ICOM)

会议地点: 长春

会议语种:英文

页码: 269-271

在线出版日期: 2012-08-23（万方平台首次上网日期，不代表论文的发表时间）