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

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Continuous angle steering of an optically- controlled phased array antenna based on differential true time delay

Jian Wang, Peipei Hou, Haiwen Cai

|May 14, 2015

Summary

We developed an optically controlled phased array antenna (PAA) using an optical beamforming network (OBFN) for broadband beam steering. This system achieves RF-independent, continuous angle steering without beam squint, enabling synchronous multi-beam acquisition.

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Area of Science:

Optoelectronics
Antenna Engineering
Photonics

Background:

Phased array antennas (PAAs) are crucial for modern wireless communication systems.
Traditional PAAs face challenges in broadband beam steering and beam squint.
Optical beamforming networks (OBFNs) offer potential solutions for advanced antenna control.

Purpose of the Study:

To propose and demonstrate an optically controlled phased array antenna (PAA).
To investigate the use of a differential true time delay optical beamforming network (OBFN) for beam steering.
To achieve radio frequency (RF)-independent, broadband beam steering without beam squint.

Main Methods:

Construction of an OBFN using stack-integrated micro-optical components to realize differential true time delay.
Integration of the OBFN with a PAA for optically controlled beam steering.
Experimental validation of the OBFN-based PAA's performance.

Main Results:

Successful demonstration of optically controlled angle steering of RF beams.
Achieved RF-independent broadband beam steering without the beam squint effect.
Demonstrated continuous angle steering and synchronous acquisition of multi-beams at different steering angles.

Conclusions:

The proposed OBFN-based PAA enables efficient and versatile beam steering.
This technology overcomes limitations of conventional PAAs for broadband applications.
The system shows promise for advanced wireless communication and radar systems.