Abstract
A numerical analysis of a hexagonal PCF structure with four circular air hole rings around the core has been presented in this paper. By utilizing a full vectorial finite element method with perfectly matched layers, propagation properties such as birefringence, chromatic dispersion and confinement losses are numericaly evaluated for the proposed PCF structure. Specifically, birefringence of 2.018 × 10–2, nonlinear coefficients of 40.682 W−1 km−1, negative chromatic dispersion of − 47.72 ps/km.nm at 1.55 µm and − 21 to − 105 ps/km.nm at the telecommunication band of C-U have been reported.
Highlights
A numerical analysis of a hexagonal Photonic crystal fibers (PCFs) structure with four circular air hole rings around the core has been presented in this paper
This paper presents a proposed PCF structure with ultra-high B of 2.018 × 1 0–2 and nonlinear coefficients of 40.72w−1 km−1 at 1.55 μm
The graph indicates an insignificant change in the effective refractive index values of PCF1 and PCF2 which shows that the change in hole sizes at the two orthogonal axes do not significantly affect the effective refractive index
Summary
A numerical analysis of a hexagonal PCF structure with four circular air hole rings around the core has been presented in this paper. PCFs have a range of degrees of freedom and design flexibility to control optical properties such as endless single mode[4], high birefringence[5], chromatic dispersion management[6], large mode area[7], high n onlinearity[8] and low confinement loss[9]. These properties open the door for a lot of applications like; nonlinear optics10, sensing[1], high power technology[11] and telecommunications[12,13]. In the PCF structure b y5,38 a very high B of 1 0–3 at a low CL have was reported but elliptical
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