Temperature insensitive vertically coupled microring resonatoradd/drop filters by means of a polymer overlay |
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| Authors: | Chu ST Wugan Pan Suzuki S Little BE Sato S Kokubun Y |
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| Affiliation: | Kanagawa Acad. of Sci. & Technol., Kawasaki ; |
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| Abstract: | The temperature dependence of vertically coupled glass microring resonator add/drop filters is investigated. Measurements show that the passband of the air-clad microring resonator filter increases with temperature at a rate of 0.0137 mm/°C. Using a PMMA-TFMA polymer that has an opposite refractive index temperature gradient than glass as the overlay of the microring resonator, the temperature dependence of the filter is compensated to -0.0025 nm/°C in the operation range of 25°C to 55°C |
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