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arXiv · 2303.15774

Integrated lithium niobate optical phased array for two-dimensional beam steering

Gongcheng Yue·Yang Li
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Abstract

Optical phased arrays (OPAs) with high speed, low power consumption, and low insertion loss are appealing for many applications, such as light detection and ranging, free-space communication, image projection, and imaging. These OPAs can be achieved by fully leveraging the high electro-optic modulation speed, low driving voltage, and low optical loss of integrated lithium niobate (LN) photonics. Here we present an integrated LN OPA operating in the near-infrared regime, demonstrating a 24 * 8{\deg} two-dimensional beam steering, a far-field beam spot with full-width at half-maximum of 2 * 0.6{\deg}, and a side lobe suppression level of 10 dB. Additionally, our OPA's phase modulator features a half wave voltage of 6 V. Our OPA opens the door of high speed, low power-consumption, and low loss integrated LN OPAs for various applications.

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Gongcheng Yue, Yang Li. 2023-03-28. Integrated lithium niobate optical phased array for two-dimensional beam steering. https://doi.org/10.1364/ol.491748

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