Journal
OPTICS EXPRESS
Volume 30, Issue 20, Pages 36394-36402Publisher
Optica Publishing Group
DOI: 10.1364/OE.469065
Keywords
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Funding
- Science and Technology Planning Project of Guangdong Province
- Basic and Applied Basic Research Foundation of Guangdong Province
- [2019A050510039]
- [2021A1515012215]
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In this study, we experimentally demonstrate an integrated visible light modulator at 532 nm on the thin-film lithium niobate platform. This modulator features low loss, large bandwidth, and provides a compact and efficient solution for visible wavelength modulation.
We experimentally demonstrate an integrated visible light modulator at 532 nm on the thin-film lithium niobate platform. The waveguides on such platform feature a propagation loss of 2.2 dB/mm while a grating for fiber interface has a coupling loss of 5 dB. Our fabricated modulator demonstrates a low voltage-length product of 1.1 V center dot cm and a large electro-optic bandwidth with a roll-off of-1.59 dB at 25 GHz for a length of 3.3 mm. This device offers a compact and large bandwidth solution to the challenge of integrated visible wavelength modulation in lithium niobate and paves the way for future small-form-factor integrated systems at visible wavelengths.
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