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An optimized InGaAsP/InP polarization converter employing asymmetric rib waveguides

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2 Author(s)
H. El-Refaei ; Opt. Components, Nortel Networks, Nepean, Ont., Canada ; D. Yevick

In this paper, we report on the design of a compact (≈ 226 μm) on-chip InGaAsP/InP polarization converter based on an asymmetric rib waveguide. Our theoretical analysis demonstrates that the device displays a conversion efficiency of < -25 dB (> 99.68% power conversion between orthogonal polarization) at 1550-nm wavelength with a nearly flat response over the optical C band. Regarding fabrication tolerances, we predict that the most sensitive design parameter is the waveguide width as the conversion efficiency drops to 10 dB for a deviation of ± 0.1 μm from the optimized value.

Published in:

Journal of Lightwave Technology  (Volume:21 ,  Issue: 6 )