Refractive index sensing characteristics of tilted long period fiber gratings

Abstract

Based on the finite difference beam propagation method (FD-BPM), we analysed the transmission spectra of tilted long period fiber gratings (TLPFGs) in detail. The new resonance dips corresponding to the LP1,m cladding modes appear at the right side of the resonance dips corresponding to the LP0,m cladding modes. While the tilted angle is equals to ∼ 86… (More)

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