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Optics Letters

Optics Letters

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  • Vol. 36, Iss. 17 — Sep. 1, 2011
  • pp: 3398–3400

Octave-spanning frequency comb generation in a silicon nitride chip

Yoshitomo Okawachi, Kasturi Saha, Jacob S. Levy, Y. Henry Wen, Michal Lipson, and Alexander L. Gaeta  »View Author Affiliations


Optics Letters, Vol. 36, Issue 17, pp. 3398-3400 (2011)
http://dx.doi.org/10.1364/OL.36.003398


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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 amplitude 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.

© 2011 Optical Society of America

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(140.3948) Lasers and laser optics : Microcavity devices

ToC Category:
Nonlinear Optics

History
Original Manuscript: July 27, 2011
Manuscript Accepted: August 4, 2011
Published: August 26, 2011

Citation
Yoshitomo Okawachi, Kasturi Saha, Jacob S. Levy, Y. Henry Wen, Michal Lipson, and Alexander L. Gaeta, "Octave-spanning frequency comb generation in a silicon nitride chip," Opt. Lett. 36, 3398-3400 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-17-3398

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