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Dispersion properties of square-lattice photonic crystal fibers

A. H. Bouk, A. Cucinotta, F. Poli, and S. Selleri

Open Access Open Access

Abstract

In this paper the guiding properties of photonic crystal fibers with a square lattice of air-holes in a silica matrix have been studied for the first time. The dispersion curves of fibers with different hole-to-hole spacing and air-hole diameter have been accurately calculated. Negative values of the dispersion parameter and the dispersion slope have been obtained with a hole-to-hole spacing of 1 µm. A comparison between fibers with square and triangular lattice has been also performed, taking into account the dispersion properties and the effective area in the wavelength range between 1200 nm and 1600 nm.

©2004 Optical Society of America

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Figures (6)
Fig. 1.
Fig. 1. (a) Detail of the square-lattice PCF cross-section. (b) Comparison of the air-hole positions in the first ring for square (solid line) and triangular (dashed line) lattices.

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Fig. 2.
Fig. 2. Dispersion curves of the square-lattice PCFs with (a) Λ=1 µm, (b) Λ=2 µm and (c) Λ=3 µm for different d/Λ values in the range 0.5÷0.9.

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Fig. 3.
Fig. 3. Dispersion curves of the square-lattice PCFs with d/Λ=0.9 for different Λ values between 1 µm and 3 µm.

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Fig. 4.
Fig. 4. Comparison of the dispersion parameter and the effective area values for the square-lattice PCF and the triangular one with d/Λ=0.9 and Λ=1 µm.

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Fig. 5.
Fig. 5. Comparison of the dispersion parameter (a) and the effective area (b) values for the square-lattice PCFs and the triangular ones with d/Λ=0.5, for Λ=1 µm and Λ=3 µm.

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Fig. 6.
Fig. 6. Fundamental component of the magnetic field at 1550 nm for the square-lattice PCF (a) and the triangular one (b) with d/Λ=0.5 and Λ=3 µm.

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