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This work is licensed under a Creative Commons Attribution 4.0 International License.



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Published in Photonics and Nanostructures - Fundamentals and Applications, Vol 43, February 2021.


In this work, we combine Lithium Niobate on insulator with a silicon nitride layer to form strip-loaded waveguides that can take advantage of the strong nonlinear optical coefficients of lithium niobate and of the high refractive contrast and ease of processing of silicon nitride. We describe the design and fabrication of a Fabry-Perot cavity formed by Distributed Bragg Reflectors. We discuss the design trade-offs implicit in the realisation of such microcavities of this nature and demonstrate an experimental quality factor of 2300, which is to our knowledge, the highest experimentally reported result for such type of waveguide based Fabry-Perot cavity.

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