High-Extraction-Rate Ta2O5-Core/SiO2-Clad Photonic Waveguides on Silicon Fabricated by Photolithography-Assisted Chemo-Mechanical Etching (PLACE)

Autor: Jian Liu, Youting Liang, Lang Gao, Chao Sun, Jianglin Guan, Zhe Wang, Zhaoxiang Liu, Zhiwei Fang, Min Wang, Haisu Zhang, Ya Cheng
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Nanomaterials, Vol 14, Iss 17, p 1466 (2024)
Druh dokumentu: article
ISSN: 2079-4991
DOI: 10.3390/nano14171466
Popis: We demonstrate high-extraction-rate Ta2O5-core/SiO2-clad photonic waveguides on silicon fabricated by the photolithography-assisted chemo-mechanical etching technique. Low-confinement waveguides of larger than 70% coupling efficiency with optical fibers and medium propagation loss around 1 dB/cm are investigated in the experiment. Monolithic microring resonators based on Ta2O5 waveguides have shown the quality factors to be above 105 near 1550 nm. The demonstrated Ta2O5 waveguides and their fabrication method hold great promise in various cost-effective applications, such as optical interconnecting and switching.
Databáze: Directory of Open Access Journals