Abstract
With the early development of integrated-optic devices in lossy media and semiconductor lasers, the need to understand guiding conditions in complex-index waveguides became clear. Cutoff conditions in complex-index, slab waveguides were first studied by Burke1 and by Schlosser.2 The experimental implementation of gain-guided lasers, antiguide structures, guided-wave absorption sensors, and other devices motivated further theoretical investigations of guiding characteristics and modal parameters in complex slab waveguides.3,4
© 1991 Optical Society of America
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