Abstract
We demonstrated a new method to determine the optical fiber parameters using long-period fiber gratings and a search procedure. The gratings with different pitches were inscribed to measure experimental phase-matching curves. The theoretical phase-matching curves were found by calculating the effective refractive indices of fiber modes. In the search procedure, the optical fiber parameters were varied in order to minimize the difference between the experimental phase-matching curves and the theoretical ones. The optical fiber parameters were finally determined as long as the smallest difference value was reached.
© 2016 IEEE
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