Title :
Influence of aberrations of receiver antenna on heterodyne efficiency in free-space optical communications based on heterodyne detection
Author :
Yang, Qingbo ; Tan, Liying ; Ma, Jing
Author_Institution :
Nat. Key Lab. of Tunable Laser Technol., Harbin Inst. of Technol., Harbin, China
Abstract :
Heterodyne efficiency in free-space optical communications based on heterodyne detection is degraded by the aberrations of the optics antenna used for reception of optical beams. The evolution of heterodyne efficiency with the change of rms of primary aberrations is investigated. It is shown that heterodyne efficiency decreases gradually with increasing primary aberrations. The comparison shows that different aberration types have variant influence on heterodyne efficiency. In addition, obscuration ratio of receiver antenna has a noticeable but relatively minor influence on heterodyne efficiency. We hope this work can benefit system design of heterodyne receiver in free-space coherent communications.
Keywords :
aberrations; heterodyne detection; optical communication equipment; receiving antennas; free-space coherent communication; free-space optical communication; heterodyne detection; heterodyne efficiency; obscuration ratio; optical beam reception; optics antenna aberration; primary aberration rms; receiver antenna; Adaptive optics; Optical distortion; Optical fiber communication; Optical mixing; Optical receivers; Receiving antennas; Heterodyne efficiency; free-space optical communication; primary aberration;
Conference_Titel :
Communications and Networking in China (CHINACOM), 2011 6th International ICST Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4577-0100-9
DOI :
10.1109/ChinaCom.2011.6158258
