Intra-Cavity Dispersion of Microresonators and its Engineering for Octave-Spanning Kerr Frequency Comb Generation

Author

Lin Zhang ; Jianwei Mu ; Singh, V. ; Agarwal, Anuradha Murthy ; Kimerling, Lionel C. ; Michel, J.

Author_Institution

Dept. of Mater. Sci. & Eng., Massachusetts Inst. of Technol., Cambridge, MA, USA

Volume

20

Issue

4

fYear

2014

fDate

July-Aug. 2014

Firstpage

111

Lastpage

117

Abstract

We present an analysis on intra-cavity dispersion of a micro-resonator. As an example, different dispersion sources of a silicon nitride microring resonator are identified and evaluated over a wide wavelength range. We also show the dispersion flattening technique based on a strip/slot hybrid waveguide structure can be used to tailor the intra-cavity dispersions. Octave-spanning Kerr frequency combs are numerically simulated using 2-D-FDTD. It is shown that 7.5-fs two-cycle cavity solitons can be generated, enabling ultrawide mode-locked Kerr combs, with improved comb spectral flatness.

Keywords

finite difference time-domain analysis; micro-optics; micromechanical resonators; optical Kerr effect; optical dispersion; optical solitons; optical waveguides; 2-D-FDTD; intracavity dispersion; microresonators; octave-spanning Kerr frequency comb generation; strip/slot hybrid waveguide structure; two-cycle cavity solitons; Cavity resonators; Dispersion; Nonlinear optics; Optical resonators; Optical waveguides; Resonant frequency; Silicon; Dispersion; frequency comb; integrated optics; micro-resonator; nonlinear optics; silicon photonics; slot waveguide;

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/JSTQE.2013.2295177

Filename

6734687