Parallel free-space optical interconnect based on arrays of vertical-cavity lasers and detectors with monolithic microlenses.
Parallel free-space optical interconnect based on arrays of vertical-cavity lasers and detectors with monolithic microlenses.
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基于垂直腔激光器和带有单片微透镜的探测器阵列的并行自由空间光学互连。
DOI：
10.1364/ao.37.002811
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发表时间：
1998
期刊：
影响因子：
1.9
通讯作者：
L. Coldren
中科院分区：
文献类型：
--
作者：
E. Strzelecka;D. Louderback;B. Thibeault;G. B. Thompson;K. Bertilsson;L. Coldren
我们研究了低阈值980纳米垂直腔面发射激光器在自由空间光互连中的应用。垂直腔面发射激光器和背光探测器与生长基板背面的微透镜单片集成，消除了对外部光学器件的需要。通道间距为250 mm，电路板之间的互连长度为5至10 mm，带？50-mum横向对准公差可以实现没有外部中继光学。对整个链路进行了建模，以预测系统的效率和最大比特率。演示了每通道500mbit /s的数据传输速度。数据速率受寄生的限制，而不是激光二极管的固有带宽。
We investigate the use of low-threshold 980-nm vertical-cavity surface-emitting lasers for free-space optical interconnects. The vertical-cavity surface-emitting lasers and backilluminated detectors are monolithically integrated with microlenses on the back sides of the growth substrates to eliminate the necessity of external optics. With a channel pitch of 250 mum, an interconnect length between boards of the order of 5 to 10 mm with a ?50-mum lateral alignment tolerance can be achieved without external relay optics. The complete link is modeled to predict the system's efficiency and maximum bit rate. Data transmission at 500 Mbits/s per channel is demonstrated. The data rate was limited by parasitics, not the inherent bandwidth of the laser diodes.