Alumina coating for dispersion management in ultra-high Q microresonators

Abstract

Agradecimentos: The authors acknowledge Dr. Yovanny Valenzuela for his support with numerical simulations, Dr. Sandro Marcelo Rossi for his help in characterizing the MZI fiber dispersion, and the Center for Research and Development in Telecommunications (CPqD) for providing access to their infrastructure. We also acknowledge the MultiUser Laboratory (LAMULT) at IFGW for support in the AFM measurements and the LCPNano at the Federal University of Minas Gerais (UFMG) for the support with the spectroscopic ellipsometer. This work was supported by the São Paulo Research Foundation (FAPESP) through Grant Nos. 2012/17610-3, 2012/17765-7, 2018/15580-6, 2018/15577-5, 2018/25339-4, and 2018/21311-8, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES)—Finance Code 001, the National Council for Scientific and Technological Development (CNPq; Grant Nos. 306297/2017-5 and 435260/2018-9), and the National Institute of Surface Engineering (INES/CNPq; Grant No. 465423/2014-0). A.S.F. is a CNPq fellow