CO(2) laser writing of long-period fiber gratings in optical fibers under tension.

@article{Liu2008CO2LW,
  title={CO(2) laser writing of long-period fiber gratings in optical fibers under tension.},
  author={Yunqi Liu and Kin Seng Chiang},
  journal={Optics letters},
  year={2008},
  volume={33 17},
  pages={1933-5}
}
We demonstrate experimentally that the efficiency of writing a long-period fiber grating in a single-mode fiber by CO(2) 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 CO(2) laser heating. Controlling the axial stress distribution along a fiber during the CO(2) laser writing process thus provides an additional… CONTINUE READING
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