Abstract
We present a new method for bend loss control in a curved channel optical waveguide and employ it in a novel design of a thermo-optic variable optical attenuator. We show that the introduced asymmetric refractive index profile of the waveguide structure, combined with the optimal placement of the heating electrodes, leads to a significant increase of the dynamic range of the attenuator.
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42.82.Et; 42.70.Jk; 42.79.Ta
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Tomljenovic-Hanic, S., Krolikowski, W. New design for a variable optical attenuator based on a bent channel waveguide. Appl. Phys. B 77, 19–23 (2003). https://doi.org/10.1007/s00340-003-1235-2
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DOI: https://doi.org/10.1007/s00340-003-1235-2