Abstract

In this paper, a dual-concentric-core photonic quasicrystal fiber (DCC–PQF) with a 12-fold symmetric structure has been designed to compensate for dispersion effects. To this end, a new design based on modifying the positions of the nearest air holes to the central core has been proposed for dispersion compensation, in which ultra-high negative dispersion of about 44,000ps/(nm·km) at 1.55 μm can be estimated. In addition, by optimizing structural parameters, high negative dispersion for the proposed DCC–PQF has been predicted, approximately 12,000ps/(nm·km) at around 1.55 μm, with an FWHM about 42 nm in the wavelength ranges between 1529 and 1571 nm, which entirely covers the C telecommunication band. Furthermore, a dispersion relation dependency on hole-to-hole spacing, first ring air hole diameters, as well as diameter of the air holes in the outer core and its position, has been investigated and discussed in detail.

© 2014 Optical Society of America

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