Research Paper: space optical communications

Study on beam energy and impact on communication quality in space optical communications

Research Paper Abstract:

The beam energy is one of the important factors that affect space optical communications. The beam energy has a direct effect on communication link distance, detector SNR, communication BER and other parameters. To test and verify the related technologies in the space optical communications, the paper proposes a near-earth demonstration and verification experiment systems of emission and detection to the near-space optical communications, which have wavelength of 810nm-band, optical output power of 250mW, modulation ratio of 500Mbps, and achieve to link distance of 8–10 km and communication BER better than 10⁻⁸; analyzes the effect of collimator, electro-optic modulators and optical antenna elements on the beam power loss, beam diameter, divergence angle and other parameters in the system. Theoretical analysis and experimental results are basically consistent; the conclusions have great value on further research of the near-space and deep-space optical communications.

Source:

Rui Li  Hongzuo Li  Changhong Ding  Weida Zhan 

Institute of Space Photonic, Changchun University of Science and Technology, China 

This paper appears in: Electronics and Optoelectronics (ICEOE), 2011 International Conference on

Issue Date: 29-31 July 2011

Volume: 4

On page(s): V4-113 - V4-117

Location: Dalian, Liaoning, China

Print ISBN: 978-1-61284-275-2

Digital Object Identifier: 10.1109/ICEOE.2011.6013439

Date of Current Version: 08 September 2011