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Supercontinuum generation in dispersion engineered AlGaAs-on-insulator waveguides
Stuart May1, Matteo Clerici2, Marc Sorel2,3
1James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK. stuart.may@glasgow.ac.uk.
Scientific Reports
|January 22, 2021
Summary
Engineered aluminum gallium arsenide-on-insulator (AlGaAs-OI) waveguides efficiently generate broadband supercontinua at telecom wavelengths. Waveguide width significantly impacts nonlinear dynamics, enabling compact, highly efficient nonlinear devices.
Area of Science:
- Photonics
- Materials Science
- Nonlinear Optics
Background:
- Supercontinuum generation is crucial for optical signal processing and spectroscopy.
- Aluminum gallium arsenide-on-insulator (AlGaAs-OI) is a promising material platform for integrated nonlinear optics.
Purpose of the Study:
- To investigate the impact of dispersion engineering in AlGaAs-OI waveguides on supercontinuum generation.
- To analyze the influence of waveguide width on nonlinear dynamics and spectral coherence.
Main Methods:
- Fabrication of dispersion-engineered AlGaAs-OI waveguides.
- Experimental investigation of supercontinuum generation at telecom wavelengths.
- Numerical simulations to verify spectral coherence and analyze nonlinear dynamics.
Main Results:
- Broadband supercontinua were achieved with low pulse energies ([Formula: see text]) and short device lengths (3 mm).
- Waveguide width was identified as a critical parameter influencing nonlinear dynamics.
- Soliton and dispersive wave dynamics were elucidated as key mechanisms.
Conclusions:
- Dispersion-engineered AlGaAs-OI waveguides offer a highly efficient platform for supercontinuum generation.
- This platform facilitates the exploration of fundamental nonlinear physics.
- AlGaAs-OI waveguides hold potential for developing compact and efficient nonlinear optical devices.
