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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 31, Iss. 18 — Sep. 15, 2013
  • pp: 2982–2987

Application of a Self-Sweeping Yb-Doped Fiber Laser for High-Resolution Characterization of Phase-Shifted FBGs

Ivan A. Lobach and Sergey I. Kablukov

Journal of Lightwave Technology, Vol. 31, Issue 18, pp. 2982-2987 (2013)

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Application of a self-sweeping self-pulsing laser for high-resolution spectral analysis of π-shifted FBGs has been demonstrated for the first time. It is shown that the self-sweeping laser generates nearly single-frequency radiation during a single pulse. This fact allows us to characterize the shift-induced dip of 14 MHz width in the FBG reflection spectrum. Nonlinear deformation of the measured ultranarrow spectral structure with increasing incident power is observed. Sampling interval during the scan is shown to be limited by pulse to pulse frequency shift, which is equal to the cavity mode spacing of 6 MHz. The main feature of the applied technique is its simplicity due to the absence of special elements for frequency scanning.

© 2013 IEEE

Ivan A. Lobach and Sergey I. Kablukov, "Application of a Self-Sweeping Yb-Doped Fiber Laser for High-Resolution Characterization of Phase-Shifted FBGs," J. Lightwave Technol. 31, 2982-2987 (2013)

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