Reverse BDD-based synthesis for splitter-free optical circuits
Reverse BDD-based synthesis for splitter-free optical circuits
复制标题
基于反向 BDD 的无分光器光路合成
DOI：
10.1109/aspdac.2015.7059000
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
R. Drechsler
中科院分区：
文献类型：
--
作者：
R. Wille;Oliver Keszöcze;Clemens Hopfmuller;R. Drechsler
随着硅光子学的进步，光学器件在超高速、低功耗互连以及在芯片上实现函数计算等方面都有了应用。由于底层功能的日益复杂，对这项技术的计算机辅助设计方法的需求也越来越高。在此基础上，开展了光路综合方法的初步研究工作。但到目前为止，所有提出的方法都存在合成结果不令人满意或可扩展性受限等问题。具体地说，在所得到的电路中将光信号降级为难以测量的分数的分裂阻止了用于光学电路的有效和可扩展的合成。在这项工作中，我们提出了一种基于二叉决策图(BDDS)的综合方法来克服这些障碍。这种方法产生的电路依赖于总共的零分路器--代价是适度增加光门的数量。实验证实，通过这种方法，一种高效且可扩展的光路综合方案最终成为可能。
With the advancements in silicon photonics, optical devices have found applications e.g. for ultra-high speed and low-power interconnects as well as functional computations to be realized on-chip. Caused by the increasing complexity of the underlying functionality, also the need for computer-aided design methods for this technology rises. Motivated by that, initial work on the development of synthesis methods for optical circuits has been performed. But all approaches proposed thus far suffer e.g. from unsatisfactory synthesis results or restricted scalability. In particular, splittings in the resulting circuits which degrade the optical signals into hardly measurable fractions prevent an efficient and scalable synthesis for optical circuits. In this work, we present a synthesis approach based on Binary Decision Diagrams (BDDs) that overcomes these obstacles. The approach yields circuits that rely on a total of zero splitters - at the expense of a moderate increase in the number of optical gates. Experiments confirm that, by this, an efficient and scalable synthesis scheme for optical circuits eventually becomes available.