2 September 2008 Tolerancing and corner cases in optical simulation
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Abstract
Our work discusses the tolerance modeling of an optical fiber that is inserted into a cylindrical alignment bore. We note that some commercial optical simulation software suites have the mechanical tolerance operands entered in Cartesian coordinates and if radial variation is entered as simple X and Y de-centering, there arises a kind of "corner condition" where fiber in the opto-mechanical model is offset more than is possible in the physical implementation resulting in an overly-conservative estimate of the worst-case coupling efficiency. Approaches to avoid this over estimation are presented and discussed.
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Robert P. Dahlgren, Kenneth D. Pedrotti, "Tolerancing and corner cases in optical simulation", Proc. SPIE 7068, Optical System Alignment and Tolerancing II, 706804 (2 September 2008); doi: 10.1117/12.795424; https://doi.org/10.1117/12.795424
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