Characterization of Chirped Fiber Bragg Gratings: Identification and Removal of Cladding-Mode Perturbations in Measurement Data

Characterization of Chirped Fiber Bragg Gratings:

R. Bader, T. Pagel, H. Renner, E. Brinkmeyer,
Characterization of Chirped Fiber Bragg Gratings: Identification and Removal of Cladding-Mode Perturbations in Measurement Data
J. Lightwave Technol. 29(12), pp. 1783-1789 (2011)

Abstract: In chirped fiber Bragg gratings, structural perturbations and the effect of cladding-mode coupling are shown to be distinguishable. To this end the absolute value and the phase of the experimentally determined complex coupling coefficient are Fourier transformed separately, yielding a set of discrete lines which can be clearly identified and be traced back to cladding modes. Removing these lines yields the grating properties in the absence of cladding modes.

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