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首页> 外文期刊>Applied optics >Spatial-phase code-division multiple-access system with multiplexed Fourier holography switching for reconfigurable optical interconnection
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Spatial-phase code-division multiple-access system with multiplexed Fourier holography switching for reconfigurable optical interconnection

机译：具有可重配置光互连的多路复用傅立叶全息切换的空间相位码分多址系统

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摘要

A new, to our knowledge, space-variant optical interconnection system based on a spatial-phase code-division multiple-access technique with multiplexed Fourier holography is described. In this technique a signal beam is spread over wide spatial frequencies by an M-sequence pseudorandom phase code. At a receiver side a selected signal beam is properly decoded, and at the same time its spatial pattern is shaped with a Fourier hologram, which is recorded by light that is encoded with the same M-sequence phase mask as the desired signal beam and by light whose spatial beam pattern is shaped to a signal routing pattern. Using the multiplexed holography, we can simultaneously route multisignal flows into individually specified receiver elements. The routing pattern can also be varied by means of switching the encoding phase code or replacing the hologram. We demonstrated a proof-of-principle experiment with a doubly multiplexed hologram that enables simultaneous routing of two signal beams. Using a numerical model, we showed that the proposed scheme can manage more than 250 routing patterns for one signal flow with one multiplexed hologram at a signal-to-noise ratio of ～5.
机译：据我们所知，描述了一种新的基于空间相位码分多址技术和多路复用傅立叶全息术的空变光互连系统。在该技术中，信号光束通过M序列伪随机相位码在宽的空间频率上扩展。在接收器一侧，对选定的信号束进行了正确的解码，同时，其空间图案由傅立叶全息图整形，并由与所需信号束使用相同M序列相位掩模编码的光记录，并通过空间光束模式被整形为信号路由模式的光。使用多路复用全息术，我们可以同时将多信号流路由到单独指定的接收器元素中。也可以通过切换编码相位代码或替换全息图来改变路由模式。我们用双重复用的全息图演示了原理验证实验，该全息图能够同时路由两个信号束。使用数值模型，我们证明了该方案可以在信噪比为〜5的情况下利用一个多路复用全息图为一个信号流管理250多种路由模式。

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