Design of tapering one-dimensional photonic crystal ultrahigh-Q microcavities |
| |
| Institution: | 1. Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran;2. Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran;3. Department of Molecular Medicine, School of Advanced Technologies in Medicine, International Campus, Tehran University of Medical Sciences, Tehran, Iran;4. Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran;1. Department of Electrical and Electronic Engineering, Faculty of Science and Engineering, The University of Nottingham Ningbo China, Ningbo 315100, Zhejiang, PR China;2. School of Electrical and Electronic Engineering, The Nanyang Technological University, 639798, Singapore;3. Department of Electrical and Computer Engineering, The Technical University of Munich, 80333 Munich, Germany;4. Infineon Technologies Asia Pacific Pte Ltd, Singapore 349253 |
| |
| Abstract: | One-dimensional (1D) photonic crystal (PC) microcavities can be readily embedded into silicon-on-insulator waveguides for photonic integration. Such structures are investigated by 2D Finite-Difference Time-Domain method to identify designs with high transmission which is essential for device integration. On-resonance transmission is found to decrease with the increasing mirror pairs, however, the quality factor (Q) increases to a saturated value. The addition to the Bragg mirrors of tapered periods optimized to produce a cavity mode with a near Gaussian shaped envelope results in a major reduction in vertical loss. Saturated Q up to 2.4 × 106 is feasible if the internal tapers are properly designed. The effect of increasing transmission is also demonstrated in a structure with the external tapers. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
