Group-velocity-dispersion engineering of tantala integrated photonics

被引：25
作者：
Black, Jennifer A. [1 ]
Streater, Richelle [1 ,2 ]
Lamee, Kieran F. [1 ,2 ]
Carlson, David R. [1 ]
Yu, Su-Peng [1 ,2 ]
Papp, Scott B. [1 ,2 ]
机构：
[1] NIST, Time & Frequency Div, Boulder, CO 80305 USA
[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA
来源：
OPTICS LETTERS | 2021年 / 46卷 / 04期
关键词：
SPANNING SUPERCONTINUUM GENERATION; SILICON-NITRIDE; WAVE-GUIDES; POWER; NM;
D O I：
10.1364/OL.414095
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Designing integrated photonics, especially to leverage Kerr-nonlinear optics, requires accurate and precise knowledge of the refractive index across the visible to infrared spectral ranges. Tantala (Ta2O5) is an emerging material platform for integrated photonics and nanophotonics that offers broadband ultralow loss, moderately high nonlinearity, and advantages for scalable and heterogeneous integration. We present refractive index measurements on a thin film of tantala, and we explore the efficacy of this data for group-velocity-dispersion (GVD) engineering with waveguide and. ring-resonator devices. In particular, the observed spectral extent of supercontinuum generation in fabricated waveguides and the wavelength dependence of free spectral range (FSR) in optical resonators provide a sensitive test of our integrated photonics design process. Our work opens up new design possibilities with tantala, including with octave-spanning soliton microcombs. (C) 2021 Optical Society of America
引用
收藏
页码：817 / 820
页数：4
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