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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

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Compact 2D serpentine optical phased array.

Yangming Ren, Lingxuan Zhang, Wei Zhao

|October 6, 2021

Summary

This summary is machine-generated.

A novel serpentine design for 2D silicon photonics optical phased arrays (OPAs) reduces antenna spacing. This innovation improves far-field sidelobe reduction and maintains high optical power efficiency.

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Area of Science:

Photonics
Optical Engineering
Integrated Optics

Background:

Two-dimensional optical phased arrays (OPAs) are crucial for beam steering applications.
Traditional 2D OPA designs often employ long directional couplers, leading to increased device footprint and potential signal loss.
Reducing the spacing between antenna elements is key to improving the far-field performance of OPAs.

Purpose of the Study:

To introduce a novel serpentine design for 2D silicon photonics OPAs.
To eliminate the need for long directional couplers in 2D OPA architectures.
To enhance the performance of 2D OPAs through reduced antenna spacing and maintained optical power efficiency.

Main Methods:

Development of a two-dimensional silicon photonics platform.
Implementation of a serpentine waveguide routing architecture.
Characterization of optical power efficiency and far-field radiation patterns.

Main Results:

The serpentine design successfully eliminates long directional couplers.
A significant reduction in the distance between antenna elements was achieved.
The proposed design demonstrates high optical power use efficiency.
Improved far-field sidelobe reduction was observed.

Conclusions:

The serpentine design offers a compact and efficient solution for 2D silicon photonics OPAs.
This approach overcomes limitations of traditional OPA designs regarding device size and performance.
The technology holds promise for advanced beamforming and optical communication systems.