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arXiv · 2203.17133

Reduced Material Loss in Thin-film Lithium Niobate Waveguides

Amirhassan Shams-Ansari·Guanhao Huang·Lingyan He·Zihan Li·Jeffrey Holzgrafe·Marc Jankowski·Mikhail Churaev·Prashanta Kharel·Rebecca Cheng·Di Zhu·Neil Sinclair·Boris Desiatov·Mian Zhang·Tobias J. Kippenberg·Marko Loncar
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Abstract

Thin-film lithium niobate has shown promise for scalable applications ranging from single-photon sources to high-bandwidth data communication systems. Realization of the next generation high-performance classical and quantum devices, however, requires much lower optical losses than the current state of the art ($\sim$10 million). Unfortunately, material limitations of ion-sliced thin-film lithium niobate have not been explored, and therefore it is unclear how high-quality factor can be achieved in this platform. Here we evaluate the material limited quality factor of thin-film lithium niobate photonic platform can be as high as $Q\approx 1.8\times10^{8}$ at telecommunication wavelengths, corresponding to a propagation loss of 0.2 dB/m.

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Amirhassan Shams-Ansari, Guanhao Huang, Lingyan He, Zihan Li, Jeffrey Holzgrafe, Marc Jankowski, Mikhail Churaev, Prashanta Kharel, Rebecca Cheng, Di Zhu, Neil Sinclair, Boris Desiatov, Mian Zhang, Tobias J. Kippenberg, Marko Loncar. 2022-03-31. Reduced Material Loss in Thin-film Lithium Niobate Waveguides. https://doi.org/10.1063/5.0095146

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