Abstract
A new transfer matrix method for long-period fiber gratings with coupled
multiple cladding modes is proposed and numerically characterized. The transmission
spectra of uniform and non-uniform longperiod fiber gratings are numerically
characterized. The theoretical results excellently agree with the experimental
measurements. Compared with commonly used methods, such as using the fourth-order
adaptive step size control of the Runge-Kutta algorithm in solving the coupled mode
equation, the new transfer matrix method exhibits a faster calculation speed.
© 2011 Chinese Optics Letters
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