ArticleNature communications2026
An integrated multi-THz tunable linear isolator based on electro-optic non-reciprocal strong coupling.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Nonreciprocal Electro-Optic Intermodal Scattering With Momentum Engineered RF Waves.Nanophotonics (Berlin, Germany) · 2026Article
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Authors and funding
5 authors.
Funding
Abstract
Optical isolators are essential for laser protection and robust signal routing, and several integrated non-magnetic isolators based on acousto-optic (AO) and electro-optic (EO) spatio-temporal modulation have been proposed. The most significant remaining concerns, however, are on mitigating undesirable sidebands, achieving wide bandwidth or wide tunability, and having a design that is practical to deploy. Most of these challenges can be addressed through non-reciprocal strong coupling between waveguide or resonator modes, with the intent to produce asymmetric optical dispersion, but this has never been accomplished with electro-optics. Here we demonstrate a compact EO optical isolator, using thin film lithium niobate, that is the first EO device to reach the non-reciprocal strong coupling regime. In this new regime, the isolator produces a very high isolation figure of merit and, due to its architecture, achieves linear operation with negligible sideband generation. We additionally demonstrate THz-scale (8 nm) tunability of the isolation band that is not fundamentally limited, and can be extended to multi-THz operation.
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Registered trials
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