HIGHLY ACCURATE VECTOR CORRECTION FOR OPTICAL WAVE-GUIDE PROPAGATION CONSTANTS

A vector correction is derived to the propagation constants obtained f rom a polarised analysis of graded-index optical waveguides. This gene ral formula is reduced to a form suitable for use with semiconductor r ib and strip-loaded waveguides. Corrected propagation constants calcul ated for a range of semiconductor rib waveguide structures coincide wi th available results from a full vector approach. Moreover, the vector correction term is always small, underpinning the accuracy of the sim ple and fast polarised approach for the first time.