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Adiabaticity engineering in optical waveguides
Optics Express
|October 29, 2020
Summary
We developed a new method to engineer adiabaticity in optical waveguides for multi-mode systems. This approach enables shortcuts to adiabatic light evolution, leading to compact and robust devices like polarization-independent couplers.
Area of Science:
- Photonics and Waveguide Optics
- Quantum Dynamics and Adiabatic Processes
Background:
- The fast quasi-adiabatic dynamics (FAQUAD) protocol offers shortcuts to adiabatic light evolution in optical waveguides, enabling short and robust device designs.
- Current FAQUAD limitations include homogeneous adiabaticity distribution, restricting applications to single-mode systems.
Purpose of the Study:
- To propose and demonstrate an adiabaticity engineering approach for redistributing adiabaticity in multi-mode optical waveguides.
- To achieve shortcuts to adiabaticity in multi-mode systems using a single control parameter.
Main Methods:
- Developing an adiabaticity engineering strategy tailored for multi-mode waveguide systems.
- Applying the engineered adiabaticity concept to design a compact polarization-independent adiabatic 3-dB coupler.
Main Results:
- Successfully obtained shortcuts to adiabaticity in multi-mode optical waveguides.
- Designed and validated a compact, polarization-independent adiabatic 3-dB coupler on silicon.
Conclusions:
- The proposed adiabaticity engineering approach effectively enables shortcuts to adiabaticity in multi-mode waveguide systems.
- This method facilitates the development of advanced, compact photonic devices such as polarization-independent couplers.
