Gostimirovic Dusan, Ye Winnie N
Carleton University, Silicon Micro/NanoPhotonics Group, Ottawa, K1S 5B6, Canada.
Sci Rep. 2017 Oct 3;7(1):12603. doi: 10.1038/s41598-017-12680-1.
We present a CMOS-compatible optoelectronic directed logic architecture that achieves high computational throughput (number of operations per second per unit area) by its ultracompact form factor. High speed-to-power performance is also achieved, by the low capacitance and high junction-to-mode overlap of low-radii SOI vertical pn junction microdisk switches. By using wavelength-division multiplexing and two electrical control signals per disk, each switch performs (N)OR, (N)AND, and X(N)OR operations simultaneously. Connecting multiple switches together, we demonstrate higher-order scalability in five fundamental N-bit logic circuits: AND/OR gates, adders, comparators, encoders, and decoders. To the best of our knowledge, these circuits achieve the lowest footprint of silicon-based multigigabit-per-second optical logic devices in literature.
我们展示了一种与CMOS兼容的光电定向逻辑架构，该架构通过其超紧凑的外形实现了高计算吞吐量（每单位面积每秒的操作数）。通过低半径SOI垂直pn结微盘开关的低电容和高结到模式重叠，还实现了高速与功率性能。通过使用波分复用和每个盘两个电控制信号，每个开关同时执行（或非）、（与非）和异或操作。将多个开关连接在一起，我们在五个基本的N位逻辑电路中展示了更高阶的可扩展性：与/或门、加法器、比较器、编码器和解码器。据我们所知，这些电路在文献中实现了基于硅的每秒多千兆位光学逻辑器件的最小占地面积。
