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Planar waveguides were prepared by Ag + /K + ↔Na + ion-exchange on Er +3 -doped GeO 2 –ZnO–Na 2 O–Li 2 O glasses obtained by a melting–casting method. Optical parameters of the waveguides were measured at 543.5, 632.8, and 1550nm by m-line technique as a function of the Ag + ion-exchange time. The optimized planar waveguides show an effective...
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