Deep UV-induced near-infrared photodarkening of Er/Yb-doped and undoped phosphate fibers

    Authors

    L. Y. Xiong; P. Hofmann; A. Schulzgen; N. Peyghambarian;J. Albert

    Comments

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    Abbreviated Journal Title

    Opt. Lett.

    Keywords

    SILICA FIBERS; ALUMINOSILICATE GLASS; OPTICAL-FIBERS; NM IRRADIATION; INDEX CHANGE; LASER; PHOSPHOSILICATE; GERMANOSILICATE; Optics

    Abstract

    Photodarkening (PD) of Er/Yb-doped and undoped phosphate fibers caused by pulsed 193 nm irradiation from an ArF excimer laser to form Bragg grating mirrors is investigated. Doped and undoped phosphate fibers exhibit the same level of significant UV-induced PD loss, which is associated with the formation of a color center band at 467 nm. The UV-induced absorption extends into the NIR and creates a loss on the order of 1 dB/cm across the C-band. Photo-bleaching by a high-power supercontinuum source, and thermal-bleaching processes are performed on photodarkened samples. Both bleaching processes are found effective to fully erase the UV-induced PD loss. (C) 2013 Optical Society of America

    Journal Title

    Optics Letters

    Volume

    38

    Issue/Number

    20

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    4193

    Last Page

    4196

    WOS Identifier

    WOS:000326570300059

    ISSN

    0146-9592

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