Research On Technology Of Spatial Light Receiving Based On The Optical Preamplifier

With the extensive application of optical communication technology. Great prospects for the development of the1550nm space optical communication in future communications. The optical preamplifier-based spatial light receiving is a key technology. This article is the technology research.The main content is as follows:Description and analysis of a space optical fibre coupling system,coupling. Detailed study of the structure of the optical fiber and transmission characteristics, and conditions of offset of the ideal state where the optical fiber, the spatial light coupled with the fiber analyzed.The analysis and comparison of the three types of fiber amplifiers, select EDFA optical amplifiers as a pre. Analysis EDFA system signal-to-noise ratio and sensitivity.Design a set of test systems for space, light and fiber coupling and EDFA signal-to-noise ratio of the system experiments and experimental data analysis.