silicon-nitride and lithium-niobate

silicon-nitride has been researched along with lithium-niobate* in 1 studies

Other Studies

1 other study(ies) available for silicon-nitride and lithium-niobate

ArticleYear
Silicon nitride assisted tri-layer edge coupler on lithium niobate-on-insulator platform.
    Optics letters, 2023, Jul-01, Volume: 48, Issue:13

    Lithium niobate-on-insulator (LNOI) is a promising integration platform for various applications, such as optical communication, microwave photonics, and nonlinear optics. To make Lithium niobate (LN) photonic integrated circuits (PICs) more practical, low-loss fiber-chip coupling is essential. In this Letter, we propose and experimentally demonstrate a silicon nitride (SiN) assisted tri-layer edge coupler on LNOI platform. The edge coupler consists of a bilayer LN taper and an interlayer coupling structure composed of an 80 nm-thick SiN waveguide and an LN strip waveguide. The measured fiber-chip coupling loss for the TE mode is 0.75 dB/facet at 1550 nm. Transition loss between the SiN waveguide and LN strip waveguide is ∼0.15 dB. In addition, the fabrication tolerance of the SiN waveguide in the tri-layer edge coupler is high.

    Topics: Oxides; Photons; Silicon Compounds

2023