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A comprehensive analysis of multilayer channel waveguides

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3 Author(s)
Osman, N. ; Dept. of Electron. Eng., Hokkaido Univ., Sapporo, Japan ; Koshiba, M. ; Kaji, Ryosaku

Using a simple approach based on the scalar finite element method, propagation characteristics of multilayer channel waveguides are calculated. The effective index, modal field, confinement factor, far-field intensity pattern, and radiation angle of the far-field pattern (full width at half maximum intensity) for multilayer channel waveguides formed with multiple quantum well (MQW) materials and with the MQW materials replaced by a single homogeneous material with the root mean square value of the refractive indexes are compared. Numerical results confirm that the root-mean-square-value approximation, which has been widely used for planar MQW (two-dimensional) waveguides, is useful also for MQW channel (three-dimensional) waveguides with a large number of layers

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Lightwave Technology, Journal of  (Volume:12 ,  Issue: 5 )