Design Considerations for Single-Mode Microring Lasers Using Parity-Time-Symmetry
Hossein Hodaeia, Absar U. Hassana, Jinhan Rena, William E. Hayengaa, Mohammad‐Ali Miria, Demetrios N. Christodoulidesa, Mercedeh Khajavikhana
- aCollege of Optics and Photonics, University of Central Florida, Orlando, FL, USA
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Abstract
Coupled microring arrangements with balanced gain and loss, also known as parity-time symmetric systems, are investigated both analytically and experimentally. In these configurations, stable single-mode lasing can be achieved at pump powers well above threshold. This self-adaptive mode management technique is broadband and robust to small fabrication imperfections. The results presented in this paper provide a new avenue in designing mode selective chip-scale in-plane semiconductor lasers by utilizing the complex dynamics of coupled gain/loss cavities.