ZEMAX Users' Knowledge Base - http://www.zemax.com/kb How to Model Coupling Into a Multi-Mode Fiber http://www.zemax.com/kb/articles/141/1/How-to-Model-Coupling-Into-a-Multi-Mode- Fiber/Page1.html By Nam-Hyong Kim Published on 30 January 2007 This article demonstrates the use of the Geometrical Image Analysis feature to compute multi mode fiber coupling efficiency. The sample files can be