Titlebook: Internet of Things, Smart Spaces, and Next Generation Networks and Systems; 17th International C Olga Galinina,Sergey Andreev,Yevgeni Kouch

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Advanced Materials for Fiber Communication Systemsomposition which has the minimum value of Landau-Placzek ratio (R.). Er. doped fluoroaluminate glasses were prepared by the same technique. The near infrared luminescence spectra of glasses corresponding to the .I. → .I. transition of Er. ions were observed. The mechanism of upconversion emissions E

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