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Proceedings Paper

Active fibers from sol-gel derived granulated silica: state of the art and potential
Author(s): Valerio Romano; Frederic Sandoz
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Paper Abstract

In the recent past we have studied the granulated silica method as a versatile and cost effective way of fiber preform production. We have used the sol-gel technology combined with a laser-assisted remelting step to produce high homogeneity Rare Earth or Transition Metal - activated microsized particles for the fiber core. For the fiber cladding pure or index-raised granulated Silica has been employed. Silica glass tubes, appropriately filled with these granular materials, are then drawn to fibers, eventually after an optional quality enhancing vitrification step. The process offers a high degree of compositional flexibility with respect to dopants; it further facilitates to achieve high concentrations even in cases when several dopants are used. By this "rapid preform production" technique, that is also ideally suited for the preparation of microstructured optical fibers, several fibers ranging from broadband emitters, PCFs and large mode area fibers have been produced and will be presented here.

Paper Details

Date Published: 14 October 2010
PDF: 6 pages
Proc. SPIE 7839, 2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2), 78390O (14 October 2010); doi: 10.1117/12.876832
Show Author Affiliations
Valerio Romano, Univ. Bern (Switzerland)
Bern Univ. of Applied Sciences (Switzerland)
Frederic Sandoz, Silitec SA (Switzerland)


Published in SPIE Proceedings Vol. 7839:
2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2)
Juan Hernández-Cordero; Ismael Torres-Gómez; Alexis Méndez, Editor(s)

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