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arXiv · 2005.03794

Integrated microwave acousto-optic frequency shifter on thin-film lithium niobate

Linbo Shao·Neil Sinclair·James Leatham·Yaowen Hu·Mengjie Yu·Terry Turpin·Devon Crowe·Marko Loncar
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Abstract

Electrically driven acousto-optic devices that provide beam deflection and optical frequency shifting have broad applications from pulse synthesis to heterodyne detection. Commercially available acousto-optic modulators are based on bulk materials and consume Watts of radio frequency power. Here, we demonstrate an integrated 3-GHz acousto-optic frequency shifter on thin-film lithium niobate, featuring a carrier suppression over 30 dB. Further, we demonstrate a gigahertz-spaced optical frequency comb featuring more than 200 lines over a 0.6-THz optical bandwidth by recirculating the light in an active frequency shifting loop. Our integrated acousto-optic platform leads to the development of on-chip optical routing, isolation, and microwave signal processing.

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Linbo Shao, Neil Sinclair, James Leatham, Yaowen Hu, Mengjie Yu, Terry Turpin, Devon Crowe, Marko Loncar. 2020-05-07. Integrated microwave acousto-optic frequency shifter on thin-film lithium niobate. https://doi.org/10.1364/oe.397138

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