Measurement of refractive index change due to CO2 laser irradiation using an LPG pair in optical fibers

B. H. Kim, T. J. Ahn, Y. Park, D. Y. Kim, B. H. Lee, Y. Chung, U. C. Paek, W. T. Han

Research output: Contribution to journalConference articlepeer-review


Refractive index change in the core of optical fibers by CO2 laser irradiation was measured by using a long period fiber grating (LPG) pair. Effect of drawing force applied to the optical fibers during drawing process on the refractive index change upon the CO2 laser irradiation was investigated. The refractive index was found to decrease linearly with the drawing force and it was due to the relaxation of the residual stress. Effect of the CO2 laser output power on the residual stress relaxation and the fiber elongation was also studied.

Original languageEnglish
Pages (from-to)286-295
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2001
EventOptical Fiber and Planar Waveguide Technology - Beijing, China
Duration: 2001 Nov 132001 Nov 15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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