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We report a record low temperature dependent wavelength shift of 0.2 pm/K for silicon-on-insulator strip racetrack resonators at a 1550 nm wavelength using a polymer cladding. A significant reduction of propagation losses is also achieved.
Athermal silicon ring resonators are experimentally demonstrated by overlaying a polymer cladding on narrowed silicon wires. The wavelength temperature dependence of the silicon ring resonator is reduced from 54.2 pm/degC to -4.9 pm/degC.
Thermo-optical compensation in high-index contrast waveguide system (a-Si on SiO2) is reported using different cladding materials. We experimentally demonstrate the thermo-optically compensated a-Si based racetrack ring resonators with an acrylate polymer cladding.
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