A new photonic crystal fiber design on the high negative ultra-flattened dispersion for both X and Y polarization modes

Abstract

 We propose a photonic crystal fiber design that performs negative and ultraflattened chromatic dispersion of -251 to -256 ps.nm -1 .km -1 for X and -290 to -294 ps.nm -1 .km -1 for Y polarization mode respectively within a wide band wavelength of 1.25 to 1.7 µm (450-nm). The 1.25 to 1.7 µm bandwidth supports the second and third windows covering O+E+S+C+L+U bands in the infrared region. With these reported guiding properties, this fiber can be used for the application of residual dispersion compensation (RDC) in high-speed data transmission optical systems. The proposed RDCF provides ultra flattened dispersion property for both polarization mode i.e. dispersion variation (ΔD) of ±5 ps.nm -1 .km -1 for X and ±4 ps.nm -1 .km -1 for Y polarization mode.  The proposed RDCF has identical circular air holes that are placed in a triangular pattern which simplify the fabrication process. Abstract Analysis of numerical design and properties of a new silica based photonic crystal fiber (PCF) are proposed in this manuscript. The design performs ulta-flattened negative chromatic dispersion (UNCD) in the optical windows 2nd and 3rd involving O to U bands in the infrared (IF) portion. The guiding properties are observed by employing a circular perfectly matched layer (PML) boundary through the finiteelement method (FEM). The proposed design is compatible for the application of residual dispersion compensation (RDC) as it grants negative dispersion (ND) and

Methanol-Filled Hybrid Photonic Crystal Fiber with High Birefringent and Negative Dispersion

“…The fiber exhibits a very large negative dispersion because of rapid slope change of the refractive indices at the coupling wavelength between the inner core and outer core. The dependence of different geometrical parameters, namely, hole-to-hole spacing and different air-hole diameter, was reported [15] and investigated in details. With these reported guiding properties, fiber can be used for the application of residual dispersion compensation in high-speed data transmission optical system.…”