ANALYSIS OF LEAKAGE PROPERTIES AND GUIDING CONDITIONS OF RIB ANTIRESONANT REFLECTING OPTICAL WAVE-GUIDES

Power leakage properties and guiding conditions of rib antiresonant re flecting optical waveguides (rib-ARROW) have been theoretically and ex perimentally studied as a function of wavelength and polarization of t he light for different geometrical and optical parameters that charact erize the rib-ARROW structure. Obtained results show that rib-ARROW's can only be fabricated with low losses in a wavelength range when dete rmined rib configurations are adopted. Furthermore, these waveguides e xhibit a polarization sensitivty that largely depends on the core-subs trate refractive index difference. Together with the experimental resu lts, theoretical calculations from different modeling methods are also presented and discussed.