An optimized InGaAsP/InP polarization converter employing asymmetric rib waveguides |
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Authors: | El-Refaei H Yevick D |
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Affiliation: | Opt. Components, Nortel Networks, Nepean, Ont., Canada; |
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Abstract: | In this paper, we report on the design of a compact (/spl ap/ 226 /spl mu/m) 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 /spl plusmn/ 0.1 /spl mu/m from the optimized value. |
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