Effect of the Fiber Coating on the Radiation Sensitivity of Type I FBGs

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Abstract

We have studied the influence of the fiber coating on the radiation sensitivity of fiber Bragg gratings (FBGs). These FBGs are draw tower gratings written before applying the coating in a fiber with a photosensitive 18-mol.% GeO2-doped core. Using a Co60 source we irradiated polyimide, acrylate, and ormocer coated gratings as well as mechanically stripped ormocer coated FBGs up to a 40-kGy dose. This total dose level corresponds to a near-earth space radiation environment mission. We show that the coating type must be taken into account for correctly interpreting ionizing radiation effects on FBGs.

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Original languageEnglish
Pages (from-to)1802-1804
JournalIEEE Photonics Technology Letters
Volume20
Issue number21
DOIs
Publication statusPublished - 1 Nov 2008

Keywords

  • Fiber Bragg gratings (FBGs), optical fiber radiation effects.

ID: 142964