High-precision measurement of a propagation loss of single-mode optical waveguides on lithium niobate on insulator

2019/06/08 by Jintian Lin, Junxia Zhou, Lin, Jintian +15
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Applied Physics (physics.app-ph) #FOS: Physical sciences #Optics (physics.optics) #Photonic and Optical Devices #Photorefractive and Nonlinear Optics

paper · pdf · doi:10.48550/arxiv.1907.11188

openalex publication_date 2019/06/08 · openalex created_date 2019/07/30 · openalex updated_date 2026/07/28

Abstract

We demonstrate fabrication of single-mode optical waveguides on lithium niobate on insulator (LNOI) by optical patterning combined with chemo-mechanical polishing. The fabricated LNOI waveguides have a nearly symmetric mode profile of a mode field size of ~2.5 micron (full-width at half maximum). We develop a high-precision measurement approach by which the single mode waveguides are characterized to have a propagation loss of ~0.042 dB/cm.

Related

• Low-loss Lithium Niobate on Insulator (LNOI) Waveguides of a 10 cm-length and a Sub-nanometer Surface Roughness
• Fabrication of low-loss lithium niobate on insulator waveguides on the wafer scale
• Fabrication of polarization-independent single-mode waveguides in lithium niobate crystal with femtosecond laser pulses
• Low-loss thin-film periodically poled lithium niobate waveguides fabricated by femtosecond laser photolithography
• Avoiding lateral mode leakage in thin film lithium niobate waveguides for the generation of spectrally pure photons at telecom wavelengths