基于光子晶体实现全光半加器的提案。

Proposal for realizing an all-optical half adder based on photonic crystals.

作者信息

Serajmohammadi Somaye, Alipour-Banaei Hamed, Mehdizadeh Farhad

出版信息

Appl Opt. 2018 Mar 1;57(7):1617-1621. doi: 10.1364/AO.57.001617.

DOI:10.1364/AO.57.001617

PMID:29522008

Abstract

In this paper, we aim to propose an optical structure for realizing half-adder operation without using the nonlinear Kerr effect. Constructive and destructive interference of optical beams is the main working mechanism of the proposed structure. The phase difference required for the destructive interface will be created by choosing different lengths for the input waveguides of the XOR gate. For the proposed structure, the on-off contrast ratios for SUM and CARRY are 9.77 dB and 6.98 dB, respectively. Also, the delay time and footprint of the proposed structure are about 4 ps and 1056 μm, respectively.

摘要

在本文中，我们旨在提出一种无需利用非线性克尔效应来实现半加器运算的光学结构。光束的相长干涉和相消干涉是该所提结构的主要工作机制。异或门输入波导通过选择不同长度来产生相消干涉所需的相位差。对于所提结构，和（SUM）与进位（CARRY）的开-关对比度分别为9.77 dB和6.98 dB。此外，所提结构的延迟时间和占用面积分别约为4 ps和1056μm。