Source: https://www.osapublishing.org/ome/abstract.cfm?uri=ome-1-2-234
Timestamp: 2019-04-22 22:42:44+00:00

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Solid-core photonic crystal fibers with the core derived from non-doped or Erbium-doped sol-gel silica rods are fabricated. The results demonstrate that the direct polymeric sol-gel route constitutes a promising method to prepare large high quality glass pieces that can be integrated into microstructured optical fibers suitable for passive and active optical fiber applications.
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Fig. 1 (a) Photograph of the sol-gel silica xerogel stabilized at 1000 °C (b) silica glass rod prepared from this xerogel after dehydration and densification.
Fig. 2 Light scattered intensity of sol-gel and Suprasil glasses as a function of angle.
Fig. 3 Attenuation spectrum of undoped pure silica Sol-gel core PCF. In the inset, a Scanning Electron Microscope (SEM) image of the cross-section of pure silica sol-gel core PCF.
Fig. 4 Erbium concentration profile of SiO2Er3 preform determined using EPMA analysis. In the inset, a zoom in the rod central zone.
Fig. 5 Room temperature PL kinetics of 4I13/2 state of Er3+ ions recorded at 1530 nm under excitation at 980 nm for SiO2Er1, SiO2Er2 and SiO2Er3 preforms.
Fig. 6 Scanning Electron Microscope (SEM) image of the cross-section of PCFEr1 fiber (left). Zoom on this image showing the sol-gel Er-doped solid core of this fiber (right).
Fig. 7 Room temperature spectra of PCFEr1 and PCFEr3 microstructured fibers in the infrared region: (a) absorption spectra and (b) PL spectra upon excitation at 980 nm.
Fig. 8 (a) Gain profile at 122 mW and (b) gain at 1535 nm, as function of pump power for the PCFEr3 fiber (4.9 m length fiber).

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