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Updated: Feb 14, 2026

Fabrication of Surface Acoustic Wave Devices on Lithium Niobate
Published on: June 18, 2020
Ultra-low loss photonic circuits in lithium niobate on insulator
Abstract:
Lithium niobate on insulator (LNOI) photonics promises to combine the excellent nonlinear properties of lithium niobate with the high complexity achievable by high contrast waveguides. However, to date, fabrication challenges have resulted in high-loss and sidewall-angled waveguides, limiting its applicability. We report LNOI single mode waveguides with ultra low propagation loss of 0.4 dB/cm and sidewall angle of 75°. Our results open the route to a highly efficient photonic platform with applications ranging from high-speed telecommunication to quantum technology.
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