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Related Experiment Video

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Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

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Robust silicon arbitrary ratio power splitters using shortcuts to adiabaticity.

Hung-Ching Chung, Tai-Chun Wang, Yung-Jr Hung

|April 1, 2020

Summary

This summary is machine-generated.

Researchers developed compact silicon power splitters using shortcuts to adiabaticity. These broadband devices offer robust performance across various wavelengths and fabrication tolerances, improving upon conventional designs.

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Area of Science:

Photonics and optical engineering
Integrated optics

Background:

Adiabatic devices are essential for optical signal manipulation.
Conventional adiabatic designs can be bulky and sensitive to variations.

Purpose of the Study:

To design and fabricate compact broadband silicon arbitrary power splitters.
To enhance robustness against wavelength and fabrication variations using shortcuts to adiabaticity.

Main Methods:

Utilizing shortcuts to adiabaticity for system evolution design.
Employing decoupled system states and boundary conditions for desired split ratios.
Optimizing system evolutions for adiabaticity and robustness.

Main Results:

Successfully designed and fabricated broadband silicon power splitters.
Achieved broadband response from 1.47 to 1.62 µm.
Demonstrated excellent robustness against fabrication errors across an 8-inch wafer.
Devices are more compact than conventional adiabatic designs.

Conclusions:

Shortcuts to adiabaticity enable compact and robust broadband silicon power splitters.
The designed splitters offer improved performance and wider applicability in photonic integrated circuits.