研究目的
Investigating the design of quad-core photonic crystal fibers with flattened zero dispersion for applications in optical communication systems, medical applications, and sensing applications.
研究成果
The investigated hexagonal lattice PCF structure with quad core exhibits very high birefringence with very low dispersion, making it suitable for mitigating the effect of polarized mode dispersion. The structures also show ultra-low confinement loss and high nonlinear coefficient, ensuring their applicability in optical communication systems, wavelength division multiplexing, optical sensors, and other linear as well as nonlinear regions.
研究不足
The study focuses on the simulation of PCF structures with specific materials and geometries. The practical implementation and manufacturing of such fibers may present challenges not addressed in the paper. Additionally, the paper does not explore the impact of environmental factors on the performance of the PCFs.
1：Experimental Design and Method Selection:
The optical properties of the designed fibers were studied employing the finite difference time domain (FDTD) method, which is based on direct discretization of Maxwell’s equations. The time domain evolution of the electromagnetic field was calculated over a given spatial domain starting from a given field distribution.
2：Sample Selection and Data Sources:
Two PCF structures with hexagonal lattice and different background materials (silica and lead silicate) were simulated. The structures were geometrically similar but had different background materials.
3：List of Experimental Equipment and Materials:
Full vector mode solver of finite time difference domain (FDTD) method was used for simulating the designed structure of PCFs. Transparent boundary conditions were taken into consideration to analyze the modes propagating through the fibers.
4：Experimental Procedures and Operational Workflow:
The designed PCF structures were numerically simulated using OptiFDTD module of Optiwave Software. The different geometrical parameters used in this work were found from a large number of simulations considering these values of parameters.
5：Data Analysis Methods:
The behavior of propagating modes inside the PCF’s was studied by solving Maxwell vector equations. Dispersion, birefringence, confinement loss, effective mode area, and nonlinear coefficient were calculated using derived formulas.
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