Title :
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
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;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2013.2295177
