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Threshold conditions of electric field enhancement and energy confinement in the low-index core of nanoscale waveguides

Authors :
Sijie Luo
Yanying Zhu
Wanli Ma
Shuqing Chen
Erkuang Zhu
Suoming Wang
Source :
Applied Optics. 59:9415
Publication Year :
2020
Publisher :
Optica Publishing Group, 2020.

Abstract

Threshold conditions to realize electric field enhancement and energy confinement in the low-refractive-index core of nanoscale waveguides are studied by solving the field function. When the incident lightwave meets the relation of special thresholds, we observe the enhanced electric field and a concentrated light energy in the core. The electric field enhancement and the confined light power are highly dependent on the light wavelength. When the core width is 30 nm, for a wavelength of 1.55 µm, we achieve a power confinement factor above 40%. As the basis for a growing number of potential applications, the threshold conditions discovered in this work will find significant applications in many fields, such as optical sensors and optical communication components.

Details

ISSN :
21553165 and 1559128X
Volume :
59
Database :
OpenAIRE
Journal :
Applied Optics
Accession number :
edsair.doi.dedup.....62feafb7bc340b071d3273a8d0bb5770
Full Text :
https://doi.org/10.1364/ao.400081