Ultracompact CMOS-compatible optical logic using carrier depletion in microdisk resonators

作者：Gostimirovic Dusan; Ye Winnie N

来源：Scientific Reports, 2017, 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.

• 出版日期2017-10-3