L. Zhan et Zq. Cao, EXACT DISPERSION-EQUATION OF A GRADED REFRACTIVE-INDEX OPTICAL WAVE-GUIDE BASED ON THE EQUIVALENT ATTENUATED VECTOR, Journal of the Optical Society of America. A, Optics, image science,and vision., 15(3), 1998, pp. 713-716
On the basis of the transfer-matrix technique, the concept of the equi
valent attenuated vector is proposed and used to analyze the character
istics of the propagating modes in planar optical waveguides with grad
ed refractive-index profile; an exact analytic equation is obtained fo
r the dispersion equation of arbitrary graded refractive-index planar
optical waveguides. (C) 1998 Optical Society of America.