AI RESEARCH
Will Accurate Fields Mislead Photonic Design? FromGlobal Accuracy to Port Readout
arXiv CS.LG
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ArXi:2606.03038v1 Announce Type: new Neural field surrogates can accelerate photonic design loops, but a surrogate that looks accurate in global field error can still mis-rank candidate devices when the final decision depends on localized output-port readouts. This risk is acute in propagation-dominated MMI splitters and couplers, where port power, splitting, phase, and coupling are determined by accumulated modal interference and output-window aggregation rather than by average field similarity alone.