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Low-Loss Silicon Strip-to-Slot Mode Converters

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12 Author(s)
R. Palmer$^{1}$Institute of Photonics and Quantum Electronics (IPQ), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany ; L. Alloatti ; D. Korn ; W. Heni
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We demonstrate compact highly efficient broadband strip-to-slot mode converters in silicon with record-low losses of 0.02 (±0.02) dB and negligible reflections between 1480 nm and 1580 nm. The new strip-to-slot transition is logarithmically tapered, which enables a compact design. The new logarithmic tapers are compared with more conventional linearly tapered converters.

Published in:

IEEE Photonics Journal  (Volume:5 ,  Issue: 1 )