High-speed electro-optic modulation in topological interface states of a one-dimensional lattice.

ABSTRACT: Electro-optic modulators are key components in data communication, microwave photonics, and quantum photonics. Modulation bandwidth, energy efficiency, and device dimension are crucial metrics of modulators. Here, we provide an important direction for the miniaturization of electro-optic modulators by reporting on ultracompact topological modulators. A topological interface state in a one-dimensional lattice is implemented on a thin-film lithium-niobate integrated platform. Due to the strong optical confinement of the interface state and the peaking enhancement of the electro-optic response, a topological cavity with a size of 1.6 × 140 μm² enables a large modulation bandwidth of 104 GHz. The first topological modulator exhibits the most compact device size compared to reported

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC10465510 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature