1 January 1997 Discussion of the solid angle aperture in rectangular multimode step-index waveguides
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Optical Engineering, 36(1), (1997). doi:10.1117/1.601170
Abstract
The solid angle aperture of highly multimode rectangular step-index waveguides is calculated with mode theory and geometrical optics. There is a difference between the results of the two different approaches, the geometrical optics aperture is larger and includes the aperture obtained from mode theory. A possible cause for this discrepancy is discussed.
David Israel, Roel G. Baets, "Discussion of the solid angle aperture in rectangular multimode step-index waveguides," Optical Engineering 36(1), (1 January 1997). https://doi.org/10.1117/1.601170
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