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A new approach to the design of graded-index guided wave devices

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2 Author(s)
Mills, D.W. ; Erik Jonsson Sch. of Eng. & comput. Sci., Texas Univ., Richardson, TX, USA ; Tamil, L.S.

An inverse scattering approach to modeling single-mode gradient-index (GRIN) planar guided-wave devices is presented. The method involves solving the Gelfand-Levitan-Marchenko integral equation to obtain a refractive index profile which is infinite in extent. The theory is developed to account for truncations of this refractive index profile, illustrating the effects of a finite core width on the propagation constant. Refractive index profiles with symmetric and asymmetric cladding indexes are considered and discussed.<>

Published in:

Microwave and Guided Wave Letters, IEEE  (Volume:1 ,  Issue: 4 )