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Optical design choices for VCSEL-based free-space optical interconnects

机译:基于VCSEL的自由空间光学互连的光学设计选择

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We develop a model for a clustered free-space optical interconnect and use this to determine the maximum array density which can be achieved. We assume that the sources are multimode vertical cavity surface emitting lasers and that refractive microlenses are used to collimate the VCSEL beams. We also assume that the relay lenses are diffractive lenses with a quadratic phase profile. We find that for short interconnect distances, the maximum channel density is limited by the speed of the relay lenses, but that as the interconnect distance increases geometric aberrations are the limiting factor. We also determine the interconnect distance below which a micro-channel relay is more suitable and above which a single lens solution is adequate.
机译:我们开发了集群的自由空间光学互连模型,并使用它来确定可以实现的最大阵列密度。我们假设该来源是多模垂直腔表面发射激光器,并且该折射微透镜用于加密VCSEL光束。我们还假设中继透镜是具有二次相位轮廓的衍射透镜。我们发现,对于短互连距离,最大通道密度受到中继透镜的速度的限制,但随着互连距离增加几何像差是限制因子。我们还确定下面下面的互连距离,微通道继电器更合适,更高单透镜溶液是足够的。

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