Long Low-Loss-Litium Niobate on Insulator Waveguides with Sub-Nanometer Surface Roughness

Long Low-Loss-Litium Niobate on Insulator Waveguides with Sub-Nanometer Surface Roughness

In this paper, we develop a technique for realizing multi-centimeter-long lithium niobate on insulator (LNOI) waveguides with a propagation loss as low as 0.027 dB/cm. Our technique relies on patterning a chromium thin film coated on the top surface of LNOI into a hard mask with a femtosecond laser...

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Bibliographic Details
Main Authors: Rongbo Wu, Min Wang, Jian Xu, Jia Qi, Wei Chu, Zhiwei Fang, Jianhao Zhang, Junxia Zhou, Lingling Qiao, Zhifang Chai, Jintian Lin, Ya Cheng
Format: Article
Language:English
Published: MDPI AG 2018-11-01
Series:Nanomaterials
Subjects:
lithium niobate
waveguide
photonic integrated circuit
propagation loss
optical lithography
chemo-mechanical polishing
Online Access:https://www.mdpi.com/2079-4991/8/11/910

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