- Silicon Photonics or related areas: (from fiber to integrated circuit):
- Simulation and modeling
- Optical system and design
- Device measurement and fabrication
- Dispersion Engineering
- High-quality resonators (up to 106)
- III-V Integrated Waveguides:
- Fabrication of GaN integrated waveguides on silicon-based amorphous substrates with sputtering techniques.
- With the aid of high-power impulse magnetron sputtering (HIPIMS), this is the world-first demonstration of sputtered GaN photonics on the amorphous silicon oxide substrate at room temperature.
- High-Q GaN resonators with Q factors up to 104, allowing photonic integration at the back-end-of-line (BEOL).
- Fiber-to-waveguide Coupling Integration:
- Groove-first fabrication
- High-power stability up to 300 mW
- 6-inch full-wafer process
- 4D FMCW LiDAR (in collaborating with Prof. Jin-Wei Shi at NCU, Prof. Chia-Chien Wei at NSYSU, and Prof. You-Chia Chang at NYCU):
- High precision imaging for both distance and velocity (down to 0.01 mm/s)
- Real-time (1fps) FMCW LiDAR imaging at 10 mm/s velocity
- Demonstration with chip-based DFB lasers
- Nonlinear, Quantum Photonics and Theory:
- Models for Kerr comb generation have been developed from coupled mode equations with limited mode numbers to the spatiotemporal formulation known as Lugiato-Lefever equation (LLE). By considering the detuning from mode coupling (Δshift) at mode l, we study the MI gain for the first time by solving eigenvalue bifurcations of the normalized LLE (Wang et al., Opt. Exp. 2022).
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