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A multicore chalcogenide–tellurite hybrid optical fiber is designed and fabricated with three cores arranged in a trigonal array. Cores with high refractive index are made of chalcogenide glass (Ge 15 Ga 3 Sb 13 S 69 ), and the background with low refractive index is made of 76.5TeO 2 –6Bi 2 O 3 –11.5Li 2 O–6ZnO (mol%, TZLB). The diameters...
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