Impact Statement:In this paper, we presented the first heterodyne optical phased array receiver integrated on a silicon chip. The system captures the incident light on the chip surface an...Show More
Abstract:
This paper presents the first integrated silicon photonics optical phased array (OPA) receiver with imaging capabilities. A 32-element one-dimensional (1-D) OPA with an o...Show MoreMetadata
Impact Statement:
In this paper, we presented the first heterodyne optical phased array receiver integrated on a silicon chip. The system captures the incident light on the chip surface and processes it to distinguish the light that is coming from different directions and thus performs as a lens-free camera. Receiving light from a specific direction which is electronically steerable is useful in many other applications such as LiDAR receiver and remote sensing.
Abstract:
This paper presents the first integrated silicon photonics optical phased array (OPA) receiver with imaging capabilities. A 32-element one-dimensional (1-D) OPA with an overall aperture size of 96 × 50 \mu \text{m}^2 is used to generate an electrically steerable “gazing beam.” The OPA receiver elements couple the incident light to on-chip waveguides that is processed as a phased array receiver. To minimize signal loss and enhance sensitivity, a heterodyne architecture with phase shifters in the local reference path is utilized. The OPA receiver can provide fully programmable angular selectivity with a grating-lobe-free field-of-view of 30° and a gazing beamwidth of 0.74°.
Published in: IEEE Photonics Journal ( Volume: 10, Issue: 5, October 2018)
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