应对实用型干涉网格光学处理器的编程挑战
Addressing the programming challenges of practical interferometric mesh based optical processors
AI总结：
提出融合 Diamond 与 Clements 优点的 Bokun MZI 网格，在保持最小光学深度和直接相位监测的同时，提升可扩展性、鲁棒性与编程能效。
摘要：
我们展示了一种用于可编程光学处理器的新型 Mach-Zehnder 干涉仪（MZI）网格。所提出的网格称为 Bokun mesh，是一种融合了先前 Diamond 和 Clements 拓扑结构属性的架构。与 Diamond 类似，Bokun 提供穿过每个独立 MZI 的对角路径，从而实现直接相位监测。然而，与 Diamond 不同且与 Clements 相似的是，Bokun 保持最小光学深度，从而带来更好的可扩展性。通过提供监测选项，Bokun 的编程速度更快，提升了处理器的整体能效。与 Reck 和 Diamond 等具有更长深度的架构相比，由最佳光学深度所带来的 Bokun mesh 性能对损耗和制造缺陷也更具韧性。通过采用高效编程方案，所提出架构在权重矩阵以 2 kHz 变化时，将能效提高 83%，同时保持相同的计算精度。
英文摘要：
We demonstrate a novel mesh of Mach-Zehnder interferometers (MZIs) for programmable optical processors. The proposed mesh, referred to as Bokun mesh, is an architecture that merges the attributes of the prior topologies Diamond and Clements. Similar to Diamond, Bokun provides diagonal paths passing through every individual MZI enabling direct phase monitoring. However, unlike Diamond and similar to Clements, Bokun maintains a minimum optical depth leading to better scalability. Providing the monitoring option, Bokun's programming is faster improving the total energy efficiency of the processor. The performance of Bokun mesh enabled by an optimal optical depth is also more resilient to the loss and fabrication imperfections compared to architectures with longer depth such as Reck and Diamond. Employing an efficient programming scheme, the proposed architecture improves energy efficiency by 83% maintaining the same computation accuracy for weight matrix changes at 2 kHz.
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