Abstract
A new type ultraflattened dispersion square-lattice photonic crystal fiber with two different air-hole diameters in cladding region is proposed and the dispersion is investigated using a compact 2-D finite difference frequency domain method with the anisotropic perfectly matched layers (PML) absorbing boundary conditions. Through numerical simulation and optimizing the geometrical parameters, we find that the photonic crystal fibers proposed can realize ultraflattened dispersion of 0±0.06 ps/(km·nm) in wavelength range of 1.375 m to 1.605 m, which is more flat than that of triangular PCF, and the confinement loss is as low as about 0.01 dB/km at wavelength of 1.55 m.
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This work has been supported by the National Natural Science Foundation of China (Grant Nos. 60637010 and 60671036), and the National Basic Research Program of China (Grant No. 2007CB310403).
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Tan, Xl., Geng, Yf., Tian, Z. et al. Study of ultraflattened dispersion square-lattice photonic crystal fiber with low confinement loss. Optoelectron. Lett. 5, 124–127 (2009). https://doi.org/10.1007/s11801-009-8194-8
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DOI: https://doi.org/10.1007/s11801-009-8194-8