Silicon-Waveguide-Based Mode Evolution Polarization Rotator

Abstract

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> A mode-evolution-based polarization rotator in silicon waveguide was designed. The rotator's performance was studied under different launching conditions. The rotator with minimum length of 40 <formula formulatype="inline"><tex Notation="TeX"> $\mu$</tex></formula>m was demonstrated to provide the polarization rotation with polarization extinction ratio of 15 dB. The insertion loss at the transition region was less than 1 dB. </para>