Analysis of dispersion characteristics of solid-core PCFs with different types of lattice in the claddings, infiltrated with ethanol

Abstract

In this paper, we propose three solid-core photonic crystal fibers based on silica, with hexagonal, circular and square lattices as a cladding, composed of 8 rings of air-holes surrounding the core, infiltrated with ethanol. Using a commercial software we simulated the light propagation in these structures. The size of the air-holes was from 1 µm to 4 µm. We have shown that the fibers with the hexagonal lattices are optimal for supercontinuum generation since their dispersion characteristics are flat and the smallest.

Structure optimization of large-solid-core photonic crystal fibers based on Ge\(_{20}\)Sb\(_{5}\)Se\(_{75}\) for optical applications

“…Specifically, the chromatic dispersion coefficient (D) of PCFs was calculated from effective refractive index n eff values versus the wavelength as Eq. (2) [16]:…”

“…In particular, square lattice PCFs have low confinement loss and facilitate efficient long-distance light transmission. They provide polarization maintenance and compact integration into small optical systems [14][15][16][17]. So far, the PCFs with a solid core with the first ring removed has not been given much consideration yet.…”

“…In terms of materials, there has been a departure from the traditional fused-silica PCFs with the limitation being its low nonlinear refractive index and its wavelength limit does not exceed 2.0 µm [16,20]. Instead, researchers have recently injected liquid with a high nonlinear refractive index into the core, air holes, or used chalcogenide glass as the substrate material.…”

Study on Optical Features of Circular Photonic Crystal Fibers with Various Air-hole Size

“…These works analyzed the influence of the fill factor and lattice constant on the PCF characteristic for each lattice structure, but the optimal level of PCF feature for each type of lattice has not been evaluated yet. Recently, the work [14] has studied the influence of structural parameters on PCF properties for each type of lattice, but the authors have not applied the results obtained in supercontinuum generation. Most authors have not emphasized the role of differences in air-hole diameter in the rings in properties of PCF.…”

Optimization of the optical properties of circular lattice As2Se3 photonic crystal fibers over a wide range of wavelengths

“…These effects are strongly dominated by the dispersions and nonlinear properties of the PCFs. In recent years, a large number of [2][3][4][5][6][7][8][9][10][11] publications on SC via silica-based PCFs have demonstrated the ability of said PCFs to generate broad, flat, smooth, and highly coherent SC spectra, which opens up a wide range of applications such as telecommunications, optical metrology, optical coherence tomography, biomedical imaging, biomedical sensor, nonlinear microscopy, cosmological studies, ultra-short pulses, and frequency combs generation [12][13][14][15][16][17][18][19] . However, due to silica's high matter absorption, the SC spectrum has failed to extend beyond 2.5 µm and has not extended to the mid-infrared (MIR) wavelength range (2-20 µm).…”