Analysis of the modal solutions of rib antiresonant reflecting optical waveguides

The modal behavior of rib antiresonant reflecting optical waveguides (ARROW 's) is theoretically analyzed in this work. Two numerical analysis methods have been used for the analysis of an open rib structure: the spectral inde x method and a vectorial mode matching method, where the real and the imagi nary part of the modal solutions of several structures have been studied. A nearly polarization independent open rib structure and a embedded rib stru cture have also been studied using the mode matching method. Obtained numer ical results will be also compared with experimental data in order to point some observed discrepancies.