Optimized coupler design for slot waveguide ring resonators

Strain, M. J. and Sorel, M. (2014) Optimized coupler design for slot waveguide ring resonators. IEEE Photonics Technology Letters, 26(3), pp. 224-226. (doi: 10.1109/LPT.2013.2290693)

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Publisher's URL: http://dx.doi.org/10.1109/LPT.2013.2290693


The highly sensitive nature of slot waveguide micro-resonator power couplers is discussed with respect to the resonator geometry and evanescent coupler design. A modified, tri-bar, evanescent field coupler is demonstrated that shows reduced sensitivity to ring radius as compared with conventional couplers, while maintaining a compact beat-length of only a few micrometers. With the measurement of bending losses of curved slot waveguides, critically coupled ring resonators were designed and fabricated, exhibiting a resonance extinction exceeding 22 dB.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Sorel, Professor Marc and Strain, Dr Michael
Authors: Strain, M. J., and Sorel, M.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:IEEE Photonics Technology Letters
ISSN (Online):1941-0174

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