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General properties of N x M self-images in a strongly confined rectangular waveguide
Sailing He1, Xianyu Ao, Vladimir Romanov
1Center for Optical and Electromagnetic Research, State Key Laboratory for Modern Optical Instrumentation, Zhejiang University, Yu-Quan, Hangzhou 310027, China. sailing@kth.se
Applied Optics
|September 4, 2003
Abstract:
General properties of N x M self-images in a strongly confined rectangular waveguide are given. Analytical formulas are derived for the positions, amplitudes, and phases of the N x M images at the end of multimode interference section. The formulas are verified with numerical simulation of a three-dimensional semivectorial beam propagation method.