Abstract
In this paper, we demonstrated athermal micro-ring resonator. We numerically analyzed the temperature sensitivity of SOI rib waveguide micro-ring resonators for different waveguide dimensions with over laying of negative thermooptic coefficient (TOC) polymer materials. The simulation results show that an athermal ring resonator can be achieved by a narrow width waveguide structure of a certain dimension with a certain polymer over layer for the input light of transverse magnetic field orientation. We fabricated a 30 μm radius ring resonator with a SOI rib waveguide structure of 200 nm width, over laying a polymer material of refractive index 1.45 and a TOC value of −1.8 × 10−4. We measured the temperature sensitivity of the polymer covered fabricated ring resonator, and achieved a temperature dependant resonant wavelength shift of about 0.5 pm/°C.
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Rakib-Uddin, M., Won, Y.H. Rib waveguide-based athermal micro-ring resonator. Opt Quant Electron 47, 2667–2673 (2015). https://doi.org/10.1007/s11082-015-0150-1
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DOI: https://doi.org/10.1007/s11082-015-0150-1