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Gain saturation in gain-guided slab waveguides with large-index antiguiding
Tsing-Hua Her1, Xianyu Ao, Lee W Casperson
1Department of Physics and Optical Science, and Center for Optoelectronics and Optical Communications,The University of North Carolina at Charlotte, 9201 University City Boulevard,Charlotte, North Carolina 28223, USA. ther@uncc.edu
Abstract:
We investigate numerically and analytically the effects of gain saturation on the propagation of the fundamental mode in a gain-guided index-antiguided slab waveguide. The propagating mode adapts to gain saturation by becoming less confined, while at the same time its peak intensity increases more slowly. At steady state, both the mode shape and the power remain constant.
