scholarly journals Design and simulation of rotated hexagonal porous core photonic crystal fibre with improved effective material loss and dispersion properties

2020 ◽  
Vol 20 (1) ◽  
pp. 75
Author(s):  
Izaddeen Kabir Yakasai ◽  
Pg. Emeroylariffion Abas ◽  
Norazanita Hj Shamsuddin ◽  
Feroza Begum
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Photonic Crystal ◽  
Material Loss ◽  
Photonic Crystal Fibre ◽  
Dispersion Profile ◽  
Dispersion Properties ◽  
Porous Core ◽  
Thz Applications ◽  
Power Fraction

<p><span>A thorough modal characterization, centred on the full vectorial finite element method (FEM) has been used to model and numerically investigate a porous core photonic crystal fibre (PC-PCF), which may potentially be integrated into Terahertz (10<sup>12</sup> Hz) compact systems. The proposed fibre consists of a rotated hexagonal core surrounded by a conventional hexagonal cladding. It has been shown that effective material loss (EML), core power fraction and dispersion profile are 0.019 cm<sup>-1</sup>, 51.7% and 0.5 ± 0.04 ps/THz/cm within 1 THz bandwidth, respectively. Based on simulated results and noncomplex design, it is envisaged that the proposed fibre can be realised for industrial THz applications. </span></p>

scholarly journals A Novel Hexahedron Photonic Crystal Fiber in Terahertz Propagation: Design and Analysis

Photonics ◽  
2019 ◽  
Vol 6 (1) ◽  
pp. 32 ◽  
Author(s):  
Bikash Paul ◽  
Md. Haque ◽  
Kawsar Ahmed ◽  
Shuvo Sen
Keyword(s):  
Finite Element Method ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Numerical Aperture ◽  
Single Mode ◽  
Material Loss ◽  
Crystal Fiber ◽  
Optimum Parameters ◽  
Bulk Absorption ◽  
Power Fraction

A novel hexahedron fiber has been proposed for biomedical imaging applications and efficient guiding of terahertz radiation. A finite element method (FEM) has been applied to investigate the guiding properties rigorously. All numerically computational investigated results for optimum parameters have revealed the high numerical aperture (NA) of 0.52, high core power fraction of 64%, near zero flattened dispersion of 0.5 ± 0.6 ps/THz/cm over the 0.8–1.4 THz band and low losses with 80% of the bulk absorption material loss. In addition, the V–parameter is also inspected for checking the proposed fiber modality. The proposed single-mode hexahedron photonic crystal fiber (PCF) can be highly applicable for convenient broadband transmission and numerous applications in THz technology.

Numerical analysis of photonic crystal fibre with high birefringence and high nonlinearity

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Patrick Atsu Agbemabiese ◽  
Emmanuel Kofi Akowuah
Keyword(s):  
Finite Element Method ◽  
Boundary Condition ◽  
Finite Element ◽  
Photonic Crystal ◽  
Numerical Analysis ◽  
Chromatic Dispersion ◽  
Confinement Loss ◽  
Photonic Crystal Fibre ◽  
High Birefringence ◽  
Air Hole

AbstractA four-ring microstructure photonic crystal fibre with a descending air hole ring cladding is presented. Numerical analysis of the structure is done using full vectorial finite element method with perfectly matched layer (PML) boundary condition. It is demonstrated that it is possible to achieve at 1.55 µm confinement loss of 2.767 × 10−5 dB/m, birefringence of 0.00346 and a nonlinear co-efficient of 41.77 km−1 W−1. Also, chromatic dispersion realised suggests a tuneable zero dispersion at 0.9–1.1 µm wavelength range.

Porous core photonic crystal fibre for ultra-low material loss in THz regime

2016 ◽  
Vol 10 (16) ◽  
pp. 2179-2183 ◽  
Author(s):  
Md.Saiful Islam ◽  
Sohel Rana ◽  
Mohammad Rakibul Islam ◽  
Mohammad Faisal ◽  
Hasan Rahman ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Material Loss ◽  
Photonic Crystal Fibre ◽  
Porous Core

Analysis of the special hollow-core photonic crystal fibre by finite element method

2008 ◽  
Vol 17 (10) ◽  
pp. 3779-3784 ◽  
Author(s):  
Meng Jia ◽  
Hou Lan-Tian ◽  
Zhou Gui-Yao ◽  
Gao Fei ◽  
Yuan Jin-Hui ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Photonic Crystal ◽  
Hollow Core ◽  
Photonic Crystal Fibre ◽  
Element Method

scholarly journals Designing Dispersion Flattened Photonic Crystal Fiber for Wideband Applications

2019 ◽  
Author(s):  
Kubra Bashir ◽  
◽  
Rabia Zaman ◽  
Irfan Ahmed ◽  
Muhammad Imran Aslam
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Photonic Crystal ◽  
Software Tool ◽  
Square Lattice ◽  
Confinement Loss ◽  
Photonic Crystal Fibre ◽  
Crystal Fiber ◽  
Silica Core ◽  
Low Dispersion

In this paper, we proposed a dispersion flattened photonic crystal fibre (PCF) for having very low dispersion for wide bandwidth as well as low confinement loss. The proposed fibre has been numerically analyzed for Silica core as well as Borosilicate crown glass core with square lattice air holes. In the proposed design we have used elliptical air holes in the inner ring whereas outer rings are circular. Finite Element Method based software tool is used to analyze the proposed design. This comparison of core materials deduces that Borosilicate crown glass PCF produces negative dispersion, making it a good candidate to be used as Dispersion Compensating Fiber (DCF), whereas Silica PCF provides nearly zero dispersion at wavelength range 1.35 µm to 1.70 µm.

Theoretical Assessment of a Porous Core Photonic Crystal Fiber for Terahertz Wave Propagation

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Izaddeen Kabir Yakasai ◽  
Atta Rahman ◽  
Pg Emeroylariffion Abas ◽  
Feroza Begum
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Bulk Material ◽  
Single Mode ◽  
Confinement Loss ◽  
Design Parameters ◽  
Terahertz Waves ◽  
Material Loss ◽  
Crystal Fiber ◽  
Porous Core

AbstractA porous core photonic crystal fiber (PCF) for transmitting terahertz waves is reported and characterized using finite element method. It is shown that by enveloping an octagonal core consisting of only circular air holes in a hexagonal cladding, it is possible to attain low effective material loss that is 73.8% lower than the bulk material absorption loss at 1.0 THz operating frequency. Moreover, a low confinement loss of 7.53×10–5 cm−1 and dispersion profile of 1.0823±0.06 ps/THz/cm within 0.7–1 THz are obtained using carefully selected geometrical design parameters. Other guiding properties such as single-mode operation, bending loss, and effective area are also investigated. The structural design of this porous core PCF is comparatively simple since it contains noncomplex lattices and circular shaped air holes; and therefore, may be implemented using existing fabrication techniques. Due to its auspicious guiding properties, the proposed fiber may be used in single mode terahertz imaging and other short distance terahertz applications.

Modal solutions of photonic crystal fibers by using a full-vectorial finite element method

2006 ◽  
Author(s):  
B. M. Azizur Rahman ◽  
A.K.M. Saiful Kabir ◽  
Minesh Vaghjiani ◽  
Isuru N. M. Wijeratne ◽  
Gagandeep S. Sahota ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Crystal Fibers ◽  
Element Method
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