Topologically protected beam splitters and logic gates based on two-dimensional silicon photonic crystal slabs

L. He, H. Y. Ji, Y. J. Wang, X. D. Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)

Abstract

The beam splitters are essential optical components that are widely used in various optical instruments. The robustness of beam splitters is very necessary to all-optical networks. Here we report the design of the topologically protected beam splitter, whose splitting ratio can change flexibly to an arbitrary ratio, such as 50:50, 33:67, 25:75, based on the two-dimensional silicon photonic crystal slab. By using the 50:50 beam splitter, all major logic gates (OR, AND, NOT, XOR, NAND, XNOR, and NOR) are suitably designed with the linear interference approach. Additionally, these devices exhibit robustness even though some disorders exist. It is expected that these robust and compact devices are potentially applicable in optical computing and signal processing.

Original languageEnglish
Pages (from-to)34015-34023
Number of pages9
JournalOptics Express
Volume28
Issue number23
DOIs
Publication statusPublished - 9 Nov 2020

Fingerprint

Dive into the research topics of 'Topologically protected beam splitters and logic gates based on two-dimensional silicon photonic crystal slabs'. Together they form a unique fingerprint.

Cite this