Integrated lithium niobate optical phased array for two-dimensional beam steering
arXiv:2303.15774 · doi:10.1364/OL.491748
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° two-dimensional beam steering, a far-field beam spot with full-width at half-maximum of 2 * 0.6°, 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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