Compact optical phased array using a serial grating antenna design

TL;DR

This paper introduces a compact on-chip silicon photonics optical phased array with a serial grating antenna design that reduces size and improves power efficiency without sacrificing far-field performance.

Contribution

The paper presents a novel serial grating antenna design for optical phased arrays that eliminates directional couplers, reducing size and enhancing power utilization.

Findings

Reduces phased array size significantly.

Increases optical power utilization.

Maintains comparable far-field performance.

Abstract

We propose an on-chip Si photonics optical phased array based on a serial grating design which eliminates the use of directional couplers in previous designs. It significantly reduces overall phased array size especially when the number of the antenna is small which is often demanded in practice. The simulation results show our design reduces overall phased array size, increases optical power utilization while maintains comparable far field performance.