Jamshid Heiadarialamdarloo, Carvalho MI, Ricardo Oliviera, Rogério Nunes Nogueira and Antonio Luis Jesus Teixeira
This paper presents an equiangular spiral (ES) cladding photonic crystal fiber (PCF) made of lead silicate glass SF57. The proposed ES-PCF exhibits a flat dispersion at the telecommunications window with high nonlinearity and low confinement loss, showing an ultra-flattened dispersion at wavelengths ranging from 1.51 to 1.81 μm (300 nm band), with confinement losses of less than 0.0031 dB/km within this wavelength range, and two zero-dispersion wavelengths at 1.55 and 1.76 μm. Moreover, this fiber also has a high nonlinear coefficient of 1285 W-1km-1 at 1.55 μm.
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