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SILICON PHOTONICS

Optical switches and modulators in deep freeze

The integration of silicon-based waveguides with barium titanate thin films enables the realization of efficient electro-optic switches and modulators operating at cryogenic temperatures, offering promising opportunities for quantum technologies.

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Fig. 1: Schematic of the cross section of a Si/SiN–BTO phase shifter.

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Correspondence to Goran Z. Mashanovich.

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Mashanovich, G.Z. Optical switches and modulators in deep freeze. Nat. Mater. 19, 1135–1136 (2020). https://doi.org/10.1038/s41563-020-0739-z

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