表題番号：2022C-482
日付：2023/04/05
研究課題フォトニック結晶スローライト導波路の研究
| 研究者所属（当時） | 資格 | 氏名 | |
|---|---|---|---|
| （代表者） | 理工学術院 大学院情報生産システム研究科 | 准教授 | 高畑 清人 |
- 研究成果概要
- For the application of slow-light silicon (Si) photonic crystal waveguides (PCWs) to Mach-Zehnder modulators, a tradeoff between group index and low-dispersion bandwidth of PCW is a problem to solve. A kagome lattice Si PCW is composed of hexagonal unit cells containing three air holes, and it has a promising potential for high group index and strong slow-light-effect although it has a modest low-dispersion bandwidth. In this work, to improve the tradeoff in the kagome lattice PCW, the lattice shift and a perturbed kagome lattice design are applied. According to numerical calculations, it can achieve a medium group index of around 60, which is more than twice group index of the PCW in the ordinal kagome lattice, with a low-dispersion bandwidth of 5.5 nm.