Wide tuning of silicon-on-insulator ring resonators with a liquid crystal cladding |
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Authors: | De Cort Wout Beeckman Jeroen Claes Tom Neyts Kristiaan Baets Roel |
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Institution: | Photonics Research Group, INTEC Department, Ghent University—IMEC Sint-Pietersnieuwstraat 41, 9000 Ghent, Belgium. Wout.DeCort@ugent.be |
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Abstract: | Wide electrical tuning of silicon-on-insulator ring resonators is demonstrated using a top cladding layer of nematic liquid crystals. A tuning range of 31?nm is demonstrated for ring resonators guiding the TM mode, covering nearly the entire C-band of optical communications. Ring resonators guiding the TE mode can be tuned over 4.5?nm. The combination of a liquid crystal director calculation and a fully anisotropic mode solver confirms the interpretation of these experimental results. The realization of broad and low-power tuning in silicon-on-insulator opens up new opportunities in the field of tunable lasers, filters, and detectors. |
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