JAKE SALTZMAN, NEWS EDITOR [email protected]SHANGHAI, April 9, 2021 — A team of researchers from Fudan University has achieved robust mode matching between structurally dissimilar optical fibers, using a “reverse-tapering” approach to deliver ultralow-loss and high-strength fusion splices between standard single-mode fibers (SMFs) and ultralarge mode-area photonic crystal fibers (ULMA-PCFs). The method bypassed the need for external bridging fibers, or components, to achieve an outcome that physically brings together essential optics and photonics building blocks (optical fibers). 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