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1km 2.5Gbit/s双向激光网桥视频通信
Authors
张羽桐
梁赫西
+3 more
胡仁杰
艾勇
赵江南
Publication date
1 January 2021
Publisher
《光通信研究》编辑部
Doi
Cite
Abstract
针对远距离的激光接收对准问题,文章提出利用大面积雪崩光电二极管的激光网桥系统,用作广域网的延长以及局域网之间的连接。激光网桥系统的软件需要一台计算机作为服务器进行信息处理,硬件连接是经过交换机及电光转换,通过放置在两幢楼的两台双向激光镜头进行发射接收。这个系统采用1 550 nm的近红外光,两幢大楼之间的距离约为1 km,而激光在这个条件下的几何损耗约为26 dB/km,调节两台激光器的相对位置直到两幢大楼接收的光功率在-30 dBm以内时,成功达到了两端视频通信所需的阈值光功率,因而可以进行双向视频通信
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Last time updated on 26/01/2023