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Low optical loss nano-structured $$\mathrm{TiO }_{2}$$ TiO 2 planar waveguides by sol–gel route for photonic crystal applications

WaveguidesOptical MaterialsEngineeringTio 2Photonic CrystalsLow Optical LossOptical PropertiesGuided-wave OpticPhotonic Integrated CircuitPlanar WaveguidesPlanar Waveguide SensorNanophotonicsMaterials SciencePhotonicsPhotonic MaterialsPhotonic DeviceApplied PhysicsPhotonic StructuresOptical WaveguidesOptoelectronics