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10 May 2012 Improved integrated resonators in polymer technology for tunable filter
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In order to create thermally tunable filter, we fabricate integrated micro-ring resonators with specific polymers. Their high index contrast (Δn ~ 0.15 at the wavelength of 1550 nm) allows to make small size waveguides (typically with cross sections of 1.2 × 1.5 μm2). We study the impact of different ring radii and gaps on the response of filters. Compared to the state of the art with polymers, we have obtained ring resonators with good characteristics. These results and the high thermo-optic coefficient of polymers enable us to plan the creation of thermally tunable resonators. For that purpose, we develop a thermal model of the polymer waveguide behaviour in order to minimize the electrical consumption of a tunable filter. First experiments of thermal tunability of the micro-ring filter are also reported to work on a range of 40 °C giving a 5 nm shift of the dropped wavelength.
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A. Maalouf, C. Bastianelli, F. Mahé, A. Belmiloudi, M. Gadonna, and D. Bosc "Improved integrated resonators in polymer technology for tunable filter", Proc. SPIE 8431, Silicon Photonics and Photonic Integrated Circuits III, 843124 (10 May 2012);


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