CO2 laser writing of long-period fiber gratings in optical fibers under tension

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)1933-1935
Journal / PublicationOptics Letters
Issue number17
Publication statusPublished - 1 Sept 2008


We demonstrate experimentally that the efficiency of writing a long-period fiber grating in a single-mode fiber by CO2 laser pulses increases significantly with the axial stress applied along the fiber. We attribute the enhancement in writing efficiency to the generation of nonuniform inelastic frozen-in strains across the fiber under tension by CO2 laser heating. Controlling the axial stress distribution along a fiber during the CO2 laser writing process thus provides an additional degree of freedom for control of the grating characteristics. © 2008 Optical Society of America.

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