TITLE

Tomographic measurement of femtosecond-laser induced stress changes in optical fibers

AUTHOR(S)
Dürr, F.; Limberger, H. G.; Salathé, R.P.; Hindle, F.; Douay, M.; Fertein, E.; Przygodzki, C.
PUB. DATE
June 2004
SOURCE
Applied Physics Letters;6/14/2004, Vol. 84 Issue 24, p4983
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The tomographic measurement of the residual stress profile in femtosecond-laser irradiated standard SMF-28 germanium-doped telecommunication fiber is demonstrated. The fiber is irradiated with weakly focused pulses to realize long-period fiber gratings. In the irradiated grating regions, an asymmetrical increase in axial core stress up to 6.2 kg/mm2 is found. The increase in stress is attributed to a densification of the irradiated glass matrix. The stress-induced anisotropic index distribution is calculated and related to the absolute index change in the irradiated regions. © 2004 American Institute of Physics.
ACCESSION #
13269834

 

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