In-situ phase control of a low-loss membrane-based lithium-niobate polarisation-state modulator

We report on lithium niobate intermediate-thin films with reduced energy-manufacturing costs for manufacturing low-loss electro-optic components. A micrometer-thick membrane surrounded with tapers is inscribed in a single step by smoothly dicing the bottom face of a standard LiNbO 3 electro-optic mo...

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Bibliographic Details
Published in:Optics continuum 2022-12, Vol.1 (12), p.2513
Main Authors: Mwangi, Morris, Behague, Florent, Coste, Antoine, Safioui, Jassem, Suarez, Miguel, Byiringiro, Jean, Lutz, Philippe, Clévy, Cédric, Courjal, Nadège
Format: Article
Language:English
Subjects:
Engineering Sciences
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Summary:We report on lithium niobate intermediate-thin films with reduced energy-manufacturing costs for manufacturing low-loss electro-optic components. A micrometer-thick membrane surrounded with tapers is inscribed in a single step by smoothly dicing the bottom face of a standard LiNbO 3 electro-optic modulator. Hence, we demonstrate a freestanding polarisation-state modulator with insertion losses as low as 2.6 dB. The in-situ structuring of the membrane allows a giant phase control extending over 40°. These developments open the way to a new generation of membrane-based electro-optic devices with low manufacturing-energy costs and reduced yield losses for sensing, telecommunications, or quantum photonics applications.
ISSN:2770-0208
2770-0208
DOI:10.1364/OPTCON.471413