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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 17 — Sep. 1, 2014
  • pp: 5134–5137

Strong polarization mode coupling in microresonators

Sven Ramelow, Alessandro Farsi, Stéphane Clemmen, Jacob S. Levy, Adrea R. Johnson, Yoshitomo Okawachi, Michael. R. E. Lamont, Michal Lipson, and Alexander L. Gaeta  »View Author Affiliations


Optics Letters, Vol. 39, Issue 17, pp. 5134-5137 (2014)
http://dx.doi.org/10.1364/OL.39.005134


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Abstract

We observe strong modal coupling between the TE00 and TM00 modes in Si3N4 ring resonators revealed by avoided crossings of the corresponding resonances. Such couplings result in significant shifts of the resonance frequencies over a wide range around the crossing points. This leads to an effective dispersion that is one order of magnitude larger than the intrinsic dispersion and creates broad windows of anomalous dispersion. We also observe the changes to frequency comb spectra generated in Si3N4 microresonators due to polarization mode and higher-order mode crossings and suggest approaches to avoid these effects. Alternatively, such polarization mode crossings can be used as a tool for dispersion engineering in microresonators.

© 2014 Optical Society of America

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(130.3990) Integrated optics : Micro-optical devices

ToC Category:
Nonlinear Optics

History
Original Manuscript: May 20, 2014
Revised Manuscript: July 23, 2014
Manuscript Accepted: July 28, 2014
Published: August 25, 2014

Citation
Sven Ramelow, Alessandro Farsi, Stéphane Clemmen, Jacob S. Levy, Adrea R. Johnson, Yoshitomo Okawachi, Michael. R. E. Lamont, Michal Lipson, and Alexander L. Gaeta, "Strong polarization mode coupling in microresonators," Opt. Lett. 39, 5134-5137 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-17-5134

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