Abstract

All-optical photonic crystal diodes based on the Fano resonance of nonlinear defects are studied. The diodes can achieve nonreciprocal transmission ratios of 31.7 dB and 33.9 dB at working wavelengths of 1534.83 nm and 1536.02 nm, respectively. The function of two defects’ coupling to the performance of unidirectional light transmission is also analyzed. When two Fano cavities are cascaded to form a two-branch-channel diode, unidirectional light propagation at 1536.88, 1538.76, 1612.80, and 1616.78 nm wavelengths is achieved along two opposite forward directions, and the nonreciprocal transmission ratios are 36.5, 30.3, 23.9, and 19.6 dB, respectively.

© 2020 Optical Society of America

Three-output-channel photonic crystal splitter and switch based on nonlinear resonators and the self-collimation characteristics of a light beam

Kaizhu Liu, Haoran Fan, Shuai Feng, Honglian Guo, and Chuanbo Li
Appl. Opt. 58(35) 9548-9555 (2019)

Designing a Fano-resonance-based temperature sensor by side-coupling double cavities to waveguide in photonic crystals

Hong Wu, Hua Zhang, Feng Li, and Wei Su
Appl. Opt. 61(34) 10267-10274 (2022)

Unidirectional reciprocal wavelength filters based on the square-lattice photonic crystal structures with the rectangular defects

Shuai Feng and Yiquan Wang
Opt. Express 21(1) 220-228 (2013)

All-optical full-adder design based on photonic crystals using nonlinear effects

Reza Talebzadeh, Reza Beiranvand, and Seyed Hossein Moayed
Appl. Opt. 62(11) 2936-2944 (2023)

Optical diode using nonlinear polystyrene ring resonators in two-dimensional photonic crystal structure

Pankaj K. Sahoo and Joby Joseph
Appl. Opt. 52(34) 8252-8257 (2013)