1. Continuously tunable heterostructure air-slot nanocavities in two-dimensional photonic crystals.
- Author
-
Kang, Feng, Ren, Cheng, Wang, Ping, and Wang, Chong
- Subjects
- *
HETEROSTRUCTURES , *PHOTONIC crystals , *TWO-dimensional models , *SILICON crystals , *CRYSTAL structure - Abstract
We present tunable double and multistep heterostructure air-slot nanocavities in two-dimensional silicon photonic crystals by introducing structural changes. Through changing the air-slot width, air hole radius and air hole position in the cavity region, the continuous tunability in resonant frequency and Q value can be realized synchronously in a wide frequency bandwidth. Finite-difference time-domain methods are used to study the optical properties of the nanocavities and the attainable Q exceeds 10 6 in a wide frequency range of 0.0152 a / λ . The results show that our designs may be promising for constructing flexible photonic devices with broadband and controllable frequency tuning. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF