Octave-spanning frequency comb generation in a silicon nitride chip
Optics
2015-05-28 v1
Abstract
We demonstrate a frequency comb spanning an octave via the parametric process of cascaded four-wave mixing in a monolithic, high-Q silicon nitride microring resonator. The comb is generated from a single-frequency pump laser at 1562 nm and spans 128 THz with a spacing of 226 GHz, which can be tuned slightly with the pump power. In addition, we investigate the RF-noise characteristics of the parametric comb and find that the comb can operate in a low-noise state with a 30-dB reduction in noise as the pump frequency is tuned into the cavity resonance.
Cite
@article{arxiv.1107.5555,
title = {Octave-spanning frequency comb generation in a silicon nitride chip},
author = {Yoshitomo Okawachi and Kasturi Saha and Jacob S. Levy and Y. Henry Wen and Michal Lipson and Alexander L. Gaeta},
journal= {arXiv preprint arXiv:1107.5555},
year = {2015}
}