4.5 Article

Low-Loss Silicon Strip-to-Slot Mode Converters

Journal

IEEE PHOTONICS JOURNAL
Volume 5, Issue 1, Pages -

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOT.2013.2239283

Keywords

Photonic integrated circuits; optical waveguides

Funding

  1. DFG Center for Functional Nanostructures
  2. KIT Initiative of Excellence
  3. Karlsruhe School of Optics and Photonics
  4. EU [224402, 248609]
  5. BMBF joint project MISTRAL
  6. German Ministry of Education and Research [01BL0804]
  7. European Research Council (ERC) [280145]
  8. Open Access Publishing Fund of Karlsruhe Institute of Technology
  9. Deutsche Forschungsgemeinschaft

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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.

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