TY - JOUR
T1 - Phased-locked two-color single soliton microcombs in dispersion-engineered Si3N4 resonators
AU - Moille, Gregory
AU - Li, Qing
AU - Kim, Sangsik
AU - Westly, Daron
AU - Srinivasan, Kartik
N1 - Funding Information:
Defense Advanced Research Projects Agency (DARPA) (ACES, DODOS); Cooperative Research Agreement between UMD and NIST-CNST (70NANB10H193).
Publisher Copyright:
© 2018 Optical Society of America.
PY - 2018/6/15
Y1 - 2018/6/15
N2 - We propose and theoretically investigate a dispersionengineered Si3N4 microring resonator, based on a cross section containing a partially-etched trench, that supports phase-locked, two-color soliton microcomb states. These soliton states consist of a single circulating intracavity pulse with a modulated envelope that sits on a continuous wave background. Such temporal waveforms produce a frequency comb whose spectrum is spread over two widely-spaced spectral windows, each exhibiting a squared hyperbolic secant envelope with the two windows phase-locked to each other via Cherenkov radiation. The first spectral window is centered near the 1550 nm pump, while the second spectral window is tailored based on straightforward geometric control, and can be centered as short as 750 nm and as long as 3000 nm. We numerically analyze the robustness of the design to parameter variation, and consider its implications to self-referencing and visible wavelength comb generation.
AB - We propose and theoretically investigate a dispersionengineered Si3N4 microring resonator, based on a cross section containing a partially-etched trench, that supports phase-locked, two-color soliton microcomb states. These soliton states consist of a single circulating intracavity pulse with a modulated envelope that sits on a continuous wave background. Such temporal waveforms produce a frequency comb whose spectrum is spread over two widely-spaced spectral windows, each exhibiting a squared hyperbolic secant envelope with the two windows phase-locked to each other via Cherenkov radiation. The first spectral window is centered near the 1550 nm pump, while the second spectral window is tailored based on straightforward geometric control, and can be centered as short as 750 nm and as long as 3000 nm. We numerically analyze the robustness of the design to parameter variation, and consider its implications to self-referencing and visible wavelength comb generation.
UR - http://www.scopus.com/inward/record.url?scp=85049181492&partnerID=8YFLogxK
U2 - 10.1364/OL.43.002772
DO - 10.1364/OL.43.002772
M3 - Article
C2 - 29905685
AN - SCOPUS:85049181492
VL - 43
SP - 2772
EP - 2775
JO - Optics Letters
JF - Optics Letters
SN - 0146-9592
IS - 12
ER -