摘要
通过模拟湍流波前的振幅起伏及相位起伏,研究了湍流对空间光到单模光纤耦合的影响。研究表明,湍流相位起伏引起的耦合光功率起伏不服从对数正态分布,在相同的起伏方差下,其衰落深度比对数正态分布下的衰落大;对于给定的衰落概率,在Fried参数ro比较小时,采用小直径天线比大直径天线更有利,衰落更小。
Turbulence- induced phase fluctuations and log - amplitude fluctuations are simulated, the influence of turbulence on coupling space light into single mode fiber is analyzed using fade probability distributions. Simulation results shows that the fluctuations of coupled optical power induced by phase fluctuations is not lognormal distribution, fade depth is larger than the lognormal fade with identical variance; When fried parameter γo is small, small receiving antenna is more favorable than larger antenna because small receiving antenna has less fade.
出处
《激光杂志》
CAS
CSCD
北大核心
2006年第4期12-13,共2页
Laser Journal
基金
武器装备预研基金(514380503DZ0201)资助项目
关键词
无线光通信
光耦合
大气湍流
衰落概率
wireleas optical communication
Optical coupling
Turbulence
Fade probability
