scholarly journals Defect-Photonic Crystal Fiber structure of Zero Chromatic Dispersion and very low Confinement loss

2021 ◽  
Vol 6 (2) ◽  
pp. 98-105
Author(s):  
Paul Antwi ◽  
Patrick Atsu Agbemabiese ◽  
Jay Denton Agamah ◽  
Jacob Ayehquaye Nartey ◽  
Moses K. Torkudzor
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Chromatic Dispersion ◽  
Ring Structure ◽  
Confinement Loss ◽  
Fiber Structure ◽  
Crystal Fiber ◽  
The Third ◽  
Design Flexibility ◽  
Crystal Fibers

Photonic crystal fibers are being designed with promising results owing to design flexibility and structure geometry. A four-ring structure with ring defects has been proposed. The results show that Photonic crystal fiber with the third ring removed has very low confinement loss of 1.17x10-4dB/km at 1.55µm, chromatic dispersion of - 69ps/km.nm at 0.75µm and zero chromatic dispersion at 0.86µm. The results also show that removing only the third ring reduces chromatic dispersion at shorter wavelengths than at longer wavelengths. Vectorial Finite element method is used for this work. The proposed fiber can be used for short and medium transmission applications.   Citation: Agbemabiese, P. A., Agamah, J. D., Nartey, J. A. and Torkudzor, M. K. (2021). Defect-Photonic Crystal Fiber structure of Zero Chromatic Dispersion very low Confinement loss. International Journal of Technology and Management Research (IJTMR), Vol. 6 (2): Pp.96-105. Received: March 20, 2021Accepted: September 1, 2021

scholarly journals Analysis of Hexagonal Photonic Crystal Fiber Using the Golden Ratio

2018 ◽  
Vol 7 (3.13) ◽  
pp. 5
Author(s):  
Atta Rahman ◽  
Emeroylariffion RAbas ◽  
Feroza Begum
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Data Transmission ◽  
Chromatic Dispersion ◽  
Golden Ratio ◽  
Effective Area ◽  
Confinement Loss ◽  
Layer Boundary ◽  
Crystal Fiber ◽  
Crystal Fibers

In this research, the proposed hexagonal photonic crystal fibers design is modelled using the principle of golden ratio; fixing the proportion of pitch to diameter of the air holes constant. Finite element method with perfectly matched layer boundary is used for numerical simulation of different properties. It is shown that the proposed design has lower effective area of below 9 μm2, low chromatic dispersion value of below 57 ps/(km.nm) and confinement loss of less than 0.01 dB/km at 1.55 μm wavelength. The proposed hexagonal photonic crystal fiber is applicable for data transmission systems.  

scholarly journals Numerical simulation of all-normal dispersion visible to near-infrared supercontinuum generation in photonic crystal fibers with core filled chloroform

2021 ◽  
Vol 130 (1B) ◽  
pp. 43-51
Author(s):  
Thi Minh Ngoc Vo ◽  
Dinh Quang Ho ◽  
Tung Thanh Le ◽  
Thi Gai Le ◽  
Canh Trung Le ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Near Infrared ◽  
Cost Effective ◽  
Fused Silica ◽  
Fiber Structure ◽  
Normal Dispersion ◽  
Crystal Fiber ◽  
Crystal Fibers ◽  
Mode Area

This study proposes a photonic crystal fiber made of fused silica glass, with the core infiltrated with chloroform as a new source of supercontinuum (SC) spectrum. We numerically study the guiding properties of the fiber structure in terms of characteristic dispersion and mode area of the fundamental mode. Based on the results, we optimized the structural geometries of the CHCl3-core photonic crystal fiber to support the broadband SC generations. The fiber structure with a lattice constant of 1 μm, a filling factor of 0.8, and the diameter of the first-ring air holes equaling 0.5 μm operates in all-normal dispersion. The SC with a broadened spectral bandwidth of 0.64 to 1.80 μm is formed by using a pump pulse with a wavelength of 850 nm, 120 fs duration, and power of 0.833 kW. That fiber would be a good candidate for all-fiber SC sources as cost-effective alternative to glass core fibers.

INFLUENCE OF STRUCTURE PARAMETERS ON THE SUPERCONTINUUM GENERATION OF PHOTONIC CRYSTAL FIBER

2020 ◽  
pp. 161-168
Author(s):  
Hieu
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Structural Parameters ◽  
Hexagonal Lattice ◽  
Supercontinuum Generation ◽  
Fused Silica ◽  
Confinement Loss ◽  
Crystal Fiber ◽  
Crystal Fibers ◽  
Fused Silica Glass

In this paper, we report a numerical calculation of the influence of structural parameters on the supercontinuum generation of photonic crystal fibers. A photonic crystal fiber based on the fused silica glass, eight rings of air holes ordered in a hexagonal lattice, is proposed. Guiding properties in terms of dispersion and confinement loss of the fundamental mode are also studied numerically. As a result, the broadband width of the supercontinuum spectrum will increase when the lattice pitch decreases or the diameter of air hole in the cladding increases. However, the coherence of SC will become worse.

scholarly journals Feature Properties of Photonic Crystal Fiber with Hollow Core Filled Nitrobenzene

2020 ◽  
Vol 30 (4) ◽  
pp. 331
Author(s):  
Vu Tran Quoc ◽  
Trang Chu Thi Gia ◽  
Minh Le Van ◽  
Thuy Nguyen Thi ◽  
Phuong Nguyen Thi Hong ◽  
...  
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Chromatic Dispersion ◽  
Confinement Loss ◽  
Hollow Core ◽  
Lattice Constants ◽  
Crystal Fiber ◽  
Effective Mode Area ◽  
Mode Area

In this paper, a photonic crystal fiber (PCF) with core infiltrated with Nitrobenzene is proposed and investigated. Its feature properties as the effective refractive index, effective mode area, chromatic dispersion, and confinement loss have been numerically simulated. The obtained results show that characteristic quantities of PCF with core infiltrated with Nitrobenzene (PCF-N) having some advantages in comparison to PCF with core infiltrated with Toluene (PCF-T) at 1.55μm wavelength. For the purpose of supercontinuum generation, two optimal structures with lattice constants 2.0μm and 2.5μm with filling factors d/Ʌ = 0.3 are identified.

scholarly journals Design and Simulation of Photonic Crystal Fiber for Liquid Sensing

Photonics ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 16
Author(s):  
Abdul Mu’iz Maidi ◽  
Izaddeen Yakasai ◽  
Pg Emeroylariffion Abas ◽  
Malik Muhammad Nauman ◽  
Rosyzie Anna Apong ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Simple Structure ◽  
Chromatic Dispersion ◽  
Nonlinear Coefficient ◽  
Hexagonal Lattice ◽  
Relative Sensitivity ◽  
Effective Area ◽  
Confinement Loss ◽  
Crystal Fiber

A simple hexagonal lattice photonic crystal fiber model with liquid-infiltrated core for different liquids: water, ethanol and benzene, has been proposed. In the proposed structure, three air hole rings are present in the cladding and three equal sized air holes are present in the core. Numerical investigation of the proposed fiber has been performed using full vector finite element method with anisotropic perfectly match layers, to show that the proposed simple structure exhibits high relative sensitivity, high power fraction, relatively high birefringence, low chromatic dispersion, low confinement loss, small effective area, and high nonlinear coefficient. All these properties have been numerically investigated at a wider wavelength regime 0.6–1.8 μm within mostly the IR region. Relative sensitivities of water, ethanol and benzene are obtained at 62.60%, 65.34% and 74.50%, respectively, and the nonlinear coefficients are 69.4 W−1 km−1 for water, 73.8 W−1 km−1 for ethanol and 95.4 W−1 km−1 for benzene, at 1.3 µm operating wavelength. The simple structure can be easily fabricated for practical use, and assessment of its multiple waveguide properties has justified its usage in real liquid detection.

Design and optimization of photonic crystal fiber with improved optical characteristics

2015 ◽  
Vol 24 (04) ◽  
pp. 1550051 ◽  
Author(s):  
S. Geerthana ◽  
A. Sivanantha Raja ◽  
D. Shanmuga Sundar
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Chromatic Dispersion ◽  
Confinement Loss ◽  
Geometrical Parameters ◽  
Design And Optimization ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Wide Wavelength Range ◽  
Elliptical Core

A highly birefringent photonic crystal fiber (PCF) with large nonlinearity, low dispersion and low confinement loss is designed by introducing a solid elliptical core structure with spiral lattice of circular air holes as a cladding. The dependence of different geometrical parameters, such as pitch size, diameter of air holes and arrangement of air holes are investigated. By optimizing the available parameters, the designed elliptical–spiral PCF offers high birefringence up to 0.005264, high nonlinearity up to 8683.59[Formula: see text]W[Formula: see text][Formula: see text]km[Formula: see text], low chromatic dispersion of [Formula: see text][Formula: see text]ps/nm/km, and low confinement loss of 0.00305[Formula: see text]dB/km within a wide wavelength range of 1000–2000[Formula: see text]nm.

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