光学整流罩对机载激光通信光束远场发散角的影响

发布时间：2018-02-09 09:18

本文关键词： 光通信机载激光通信远场发散角光学设计整流罩　出处：《激光与光电子学进展》2017年04期 　论文类型：期刊论文

【摘要】：分析了同心球面光学整流罩内、外表面的球心与机载激光通信发射天线的万向节点不重合时,非对称的光学整流罩对通信光束远场发散角的影响。结果表明,在最大通信光束远场发射角约为54°的条件下,外部口径为200mm、厚度为5 mm的K9球冠整流罩使口径为30 mm的通信光束远场发散角由126μrad扩展到5.27-6.46mrad,而仅由整流罩面形加工精度引起的通信光束远场发散角变化相比由整流罩光焦度引起的通信光束远场发散角变化十分微小,可以忽略不计。利用球面透镜补偿通信光束远场发散角的变化,可使通信光束在整个发射角范围内的远场发散角均小于600μrad。
[Abstract]:The effect of asymmetric optical fairing on the far field divergence angle of the communication beam is analyzed when the spherical center of the inner and outer surfaces of the concentric spherical optical fairing does not coincide with the universal joint of the airborne laser communication antenna, and the effect of the asymmetric optical fairing on the far field divergence angle of the communication beam is analyzed. Under the condition that the maximum far-field emission angle of the communication beam is about 54 掳, The K9 spherical crown fairing with an external aperture of 200mm and a thickness of 5mm makes the far-field divergence angle of the communication beam with the aperture of 30mm expand from 126 渭 rad to 5.27-6.46mrad. however, the change of the far-field divergence angle of the communication beam caused only by the machining accuracy of the rectifier cover is different from that of the whole beam. The far field divergence angle of the communication beam caused by the focal degree of the flow mask is very small. The spherical lens is used to compensate the far field divergence angle of the communication beam, which can make the far field divergence angle of the communication beam less than 600 渭 radin the whole range of the emission angle.
【作者单位】：长春理工大学光电测控与光信息传输技术教育部重点实验室;长春理工大学空地激光通信技术重点学科实验室;
【基金】：国家自然科学基金(91338116,91438204) 吉林省教育厅基金([2016]369,[2016]366) 长春理工大学青年科学基金(WQNJJ-2016-15)
【分类号】：TN929.1

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