John Riley finds the Sigma 20-200mm f/3.5-6.3 DG Contemporary lens offers incredible versatility and impressiv... John Riley reviews and tests the Sigma 35mm f/1.4 DG II Art Lens, exploring its ...
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Abstract: Mode coupling is a fundamental concept to model and understand light propagation in optical fibers when they are affected by irregularities with respect to an ideal case. This paper reviews ...
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