Design of nonlinear photonic crystal fibers with ultra‐flattened zero dispersion for supercontinuum generation

Abstract

The study reports on the design and performance of two air‐filled and two partial ethanol‐filled photonic crystal fiber (PCF) structures with a tetra core for supercontinuum generation. The PCFs are nonlinear with ultra‐flattened zero dispersion. Holes with smaller areas are used to create a tetra‐core PCF structure. Ethanol is filled in the holes of smaller area while the larger holes of cladding region are air‐filled. Optical properties including dispersion, effective mode area, confinement loss, normalized frequency, and nonlinear coefficient of the designed PCF structures are investigated via full vector finite difference time domain (FDTD) method. A PCF structure with lead silicate as wafer exhibits significantly better results than a PCF structure with silica as wafer. However, both structures report dispersion at a telecommunication wavelength corresponding to 1.55 μm. Furthermore, the PCF structure with lead silicate as wafer exhibits a very high nonlinear coefficient corresponding to 1375 W−1 km−1 at the same wavelength. This scheme can be used for optical communication systems and in optical devices by exploiting the principle of nonlinearity.

Performance evaluation of photonic crystal fibre sensor for controlled drugs detection: a simulation approach

“…Overall, this study provides valuable insights into the development of PCF sensors for controlled drug detection and could be useful in various fields, including pharmaceuticals, forensic science, and public safety. In addition to the aforementioned observations, it is noteworthy that the favourable outcomes regarding confinement loss, nonlinear coefficient, and chromatic dispersion fortify the viability of the proposed PCF design in other various domains, including optical communications [47,48], supercontinuum generation [5], spectroscopy [49], and biomedical imaging [50]. The exceptional optical properties of PCFs provide a wide spectrum of applications, underlining its adaptability and potential impact across diverse fields.…”

“…Photonic Crystal Fibres (PCFs) are a type of optical fibre that possess a unique structure characterised by a periodic arrangement of microstructured air holes that runs along the fibre length [1,2]. The concept of PCFs was first introduced in the late 1990s as a novel category of optical fibres with the potential to offer unparalleled control over light guidance, enabling innovative applications such as supercontinuum generation, nonlinear optics [3][4][5]. PCFs have been extensively studied for various applications in wavelength operations, including telecommunications [6,7], imaging [8][9][10][11], illumination [12,13], and many more.…”

Hierarchical Self-Assembly of Thickness-Modulated Block Copolymer Thin Films for Controlling Nanodomain Orientations inside Bare Silicon Trenches

“…(3) Multiple orientations of the BCP nanodomain can be fabricated on a single substrate as not only the BCP nanodomain’s vertical/parallel orientation but a direction of lateral ordering can be controlled. Our novel BCP graphoepitaxy process can be applicable to the large-scale production of next-generation electronic, optoelectronic, and energy devices that require various nanometer-scale patterns [ 35 , 36 , 37 , 38 , 39 ].…”

A Theoretical Study of the Supercontinuum Generation for the Photonic Crystal Fibre

“…As a result, it appears that the suggested fibre is rather simple to produce. One of the most common uses of PCFs is supercontinuum generation (SCG) [14][15][16]. The spectral and temporal structure of a brief optical pulse changes as it passes through a Kerr nonlinearity and chromatic dispersion result in a transparent material.…”