Year: 2020
Type: article
Abstract: The properties of the square array of coupled Microring Resonators (MRRs) with interstitial rings are studied. Dispersion behavior of the interstitial square coupled MRRs is obtained through the transfer matrix method with the Floquet-Bloch periodic condition. Analytical formulas of the eigen wave vectors, band gaps and eigen mode vectors are derived for the special cases of the interstitial square coupled MRRs array with identical couplers and the regular square coupled MRRs array without the interstitial rings. Then, the eigen modes' field distribution are calculated for each of the four eigen wave vectors for a given frequency through the secular equation. Finally, numerical simulation is performed for an interstitial square coupled MRRs array with identical couplers and a regular square coupled MRRs array. The simulation result verifies the analytical analysis. Finally, the loaded quality factors of the interstitial 5-ring configuration, the regular 4-ring configuration and the 1-ring configuration are obtained. It is found that the loaded quality factor of the interstitial 5-ring configuration is >20 times and >8 times as high as those of the 1-ring configuration and the regular 4-ring configuration respectively, making it attractive in applications like selective filters, ultra-sensitive sensor and four-wave mixing quantum entangled photon pair sources.
Authors: Shaolin Liao, Lu Ou
Institutions: Illinois Institute of Technology, Hunan University
Language: English
Topic: Photonic and Optical Devices
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Awards: 云环境下面向机器学习的新型加密机制研究, G3021947750
OpenAlex ID: W3020198435