A wide range of communication wavelengths; the tunable zero-dispersion by dual-concentric-core photonic crystal fibers
الموضوعات :الکلمات المفتاحية: photonic crystal fibers, dispersion, dual-concentric,
ملخص المقالة :
In the present paper, we propose a new Photonic Crystal Fiber (PCF) design and analyze the contribution of geometrical parameters to the photonic crystal fibers dispersion and effective refractive index. The proposed design is validated using the 3-D finite-difference time-domain technique. According to the results of this paper, by increasing the radius of the core, the dispersion coefficient sign changes from positive to negative. For a radius of 0.5 µm at wavelengths above 1600 nm, the dispersion is close to zero. For a core refractive index greater than 1.47, the dispersion will be zero. By increasing the core refractive index, the zero-dispersion wavelength is increased.
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