Glass structure changes in CO2-laser writing of long-period fiber gratings in boron-doped single-mode fibers

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)857-863
Journal / PublicationJournal of Lightwave Technology
Issue number7
Publication statusPublished - 1 Apr 2009


We investigate in detail the process of CO2-laser writing of long-period fiber gratings (LPFGs) in unannealed and annealed boron-doped fiber samples by using repeated scanning of CO2 -laser pulses. We find that the writing dynamics depends strongly on the CO2-laser energy density and the annealing temperature of the fiber. Our results from analyzing the writing dynamics reveal the relative importance of various physical effects arising from glass structure changes due to different writing conditions and thus provide a better understanding of the formation and the properties of CO2-laser written LPFGs. © 2009 IEEE.

Research Area(s)

  • Boron-doped fiber, CO2 laser, Glass structure changes, Long-period fiber gratings (LPFGs), Stress relaxation