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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&#x00A0;&#x00D7;&#x00A0;50 <inline-formula><tex-math notation="LaTeX">$\mu \text{m}^2$</tex-math></inline-formula> is used to generate an electrically steerable &#x201C;gazing beam.&#x201D; 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&#x00B0; and a gazing beamwidth of 0.74&#x00B0;.

A 1-D Heterodyne Lens-Free Optical Phased Array Camera With Reference Phase Shifting