加法器
组合逻辑
消光比
计算机科学
反向
逻辑门
结转(投资)
拓扑(电路)
电子线路
电子工程
数学
算法
工程类
电气工程
CMOS芯片
物理
光学
波长
几何学
财务
经济
作者
Houyu Chen,Jin Li,Li-Rong Lilly Cheng,Caiyue Zhao,Xuanyi Liu,Qian Li,H. Y. Fu
出处
期刊:Journal of The Optical Society of America B-optical Physics
[Optica Publishing Group]
日期:2023-12-20
卷期号:41 (2): A60-A60
摘要
We proposed an inverse-designed compact half adder on a silicon-on-insulator platform with a footprint of 2µm×2µm. The optical power of SUM and CARRY is controlled by different input combinations, according to the truth table of a half adder. Topology optimization is applied to cope with multiple objective functions in such a combinational logic circuit. The transmittance at 1550 nm for CARRY with 11 input is 170.2%, with extinction ratios (ERs) of 27.1 and 5.8 dB for SUM and CARRY, respectively. The SUM and CARRY outputs have ERs over 22.0 dB and 5.7 dB from 1515 nm to 1600 nm. Phase condition and morphology analysis show that the device has high tolerance on phase fluctuation and fabrication. The proposed device with compact footprint, low insertion loss, and large bandwidth presents a novel, to the best of our knowledge, approach to achieve all-optical combinational logic circuits with inverse design.
科研通智能强力驱动
Strongly Powered by AbleSci AI