Highly tolerant tunable waveguide polarization rotator scheme Journal Articles uri icon

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  • Integrated polarization rotators are known to exhibit stringent fabrication tolerances, which severely handicap their practical application. Here we present a general polarization rotator scheme that enables both the compensation of fabrication errors and wavelength tunability. The scheme is described analytically, and a condition for perfect polarization conversion is established. Simulations of a silicon-on-insulator polarization rotator show polarization extinction ratios in excess of 40  dB even in the presence of large fabrication errors that in a conventional rotator configuration degrade the extinction ratio to below 5  dB. Additionally, wavelength tuning over ±30  nm is shown.


  • Alonso-Ramos, C
  • Halir, R
  • Ortega-Moñux, A
  • Cheben, Pavel
  • Vivien, L
  • Molina-Fernández, Í
  • Marris-Morini, D
  • Janz, S
  • Xu, D-X
  • Schmid, J

publication date

  • September 1, 2012