Estimation of Rayleigh scattering loss in a double-clad photonic crystal fiber

This paper proposes a novel model to attain high birefringence and low loss in a slotted core-based photonic crystal fiber (PCF) structure in THz regime. The performance of the proposed PCF has been evaluated by applying finite element method (FEM) with full simulation software COMSOL Multiphysics V-5.1. The proposed model gains good optical properties such as high birefringence of 0.24, low effective material loss (EML) of 0.03 cm[Formula: see text], low confinement loss of 6.5 × 10[Formula: see text] (dB/m), low scattering loss of 2 × 10[Formula: see text] (dB/m) and low bending loss of 7.4 × 10[Formula: see text] (dB/cm). The proposed structure also exhibits the flattened dispersion for wider frequency response. However, the real-life fabrication of the suggested model is highly feasible using the current technology due to the unique shape of circular air holes in the cladding region. The outcomes make the proposed PCF a stronger candidate for polarization-preserving applications such as sensing, communications and filtering operations in THz band.

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Multiwavelength fiber laser based on a photonic crystal fiber loop mirror with cooperative Rayleigh scattering

Applied Physics B ◽

10.1007/s00340-010-4037-3 ◽

2010 ◽

Vol 99 (3) ◽

pp. 391-395 ◽

Cited By ~ 61

Author(s):

A. M. R. Pinto ◽

O. Frazão ◽

J. L. Santos ◽

M. Lopez-Amo

Keyword(s):

Photonic Crystal ◽

Fiber Laser ◽

Photonic Crystal Fiber ◽

Rayleigh Scattering ◽

Crystal Fiber ◽

Multiwavelength Fiber Laser ◽

Fiber Loop Mirror ◽

Loop Mirror ◽

Fiber Loop

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Study on Rayleigh scattering of photonic crystal fiber

10.1117/12.743564 ◽

2007 ◽

Author(s):

Jiu-sheng Li ◽

Jian-rui Li

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Rayleigh Scattering ◽

Crystal Fiber

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Extremely Low Loss of Photonic Crystal Fiber for Terahertz Wave Propagation in Optical Communication Applications

Journal of Optical Communications ◽

10.1515/joc-2018-0009 ◽

2020 ◽

Vol 41 (4) ◽

pp. 393-401 ◽

Cited By ~ 9

Author(s):

Fahad Ahmed ◽

Subrata Roy ◽

Bikash Kumar Paul ◽

Kawsar Ahmed ◽

Ali Newaz Bahar

Keyword(s):

Wave Propagation ◽

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Fem Simulation ◽

Effective Area ◽

Low Loss ◽

Material Loss ◽

Scattering Loss ◽

Thz Wave ◽

Crystal Fiber

AbstractAn enormously low loss symmetrical hybrid decagonal porous core spiral photonic crystal fiber (SH-PCF) has been proposed for terahertz (THz) wave guiding. The modal characteristics of the fiber and its mathematical analysis have been numerically completed using a full-vector finite element method (FEM). Simulation results show an ultra-low material loss of 0.0167 cm−1 and large effective area 1.95×106 µm2 which is 91.6 % of bulk absorption material loss at controlling frequency f=1.0 THz with a core porosity 42 %. Additionally, proposed structure establishes the comparatively higher core power fraction maintaining lower scattering loss about 1.8×10−15 dB/cm at the same operating frequency. It promises the aforementioned advantages for efficient THz wave propagation.

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Design and Analysis of the Effect of Zeonex Based Octagonal Photonic Crystal Fiber for Different Types of Communication Applications

10.21203/rs.3.rs-462789/v1 ◽

2021 ◽

Author(s):

Selim Hossain ◽

M. M. Kamruzzaman ◽

Shuvo Sen ◽

Mir Mohammad Azad

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Research Work ◽

Confinement Loss ◽

Perfectly Matched Layers ◽

Terahertz Waves ◽

Material Loss ◽

Scattering Loss ◽

Crystal Fiber ◽

Different Types

Abstract In this present work, a novel structure of octagonal cladding with two elliptical air holes based on photonic crystal fiber (O-PCF) has been presented for the application of different types of communication areas within the terahertz (THz) wave propagation. There are five layers of octagonal design shape of circular air holes (CAH) in cladding region with elliptical design shape of two air holes in core area has been reported in this research work. This O-PCF fiber has been investigated by the perfectly matched layers (PML) with the finite element method (FEM). After the simulation process, our proposed O-PCF fiber shows a low effective material loss (EML) of 0.0162 cm −1 , the larger effective area of 5.88×10-8 m2, the core power fraction (PF) of 80%, the scattering loss of 1.22×10 -10 dB/km, and the confinement loss of 3.33×10 -14 dB/m at the controlling region of 1 terahertz (THz). Due to its excellent characteristics, this proposed O-PCF fiber gives proficient transmission of broadband terahertz waves of signals. Moreover, for different kinds of optical communication applications and biomedical signals, our suggested O-PCF fiber will be highly perfect in the terahertz (THz) regions.

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Low Effective Material Loss TOPAS Based Single-Mode Photonic Crystal Fiber with High Core Power Fraction in the THz Waveguiding

10.21203/rs.3.rs-487498/v1 ◽

2021 ◽

Author(s):

Selim Hossain ◽

Shuvo Sen

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Single Mode ◽

Effective Area ◽

Confinement Loss ◽

Long Distance ◽

Material Loss ◽

Scattering Loss ◽

Crystal Fiber ◽

Different Types

Abstract In this study, five layers of hexagonal cladding and two elliptical air holes based on photonic crystal fiber are discussed highly for many communication areas by decreasing different types of losses such as effective material loss (EML), scattering loss, and conﬁnement loss in the terahertz (THz) waveguiding. Our suggested fiber (H-PCF) and all simulation results are obtained with the finite element method (FEM) and the perfectly matched layer (PML) boundary conditions based COMSOL Multiphysics software have been used to design in the THz region. After investigating all the graphical results, this optical communication-related H-PCF fiber discloses an extremely low effective material loss (EML) of 0.0184 cm−1, with an effective area of 7.07×10-8 m2 and flow of power in the core region of 88% at 1 terahertz (THz). Here, other simulation parameters such as conﬁnement loss, scattering loss, and V-parameter are also presented with a proper graph. So, we can easily say that the reported H-PCF fiber is strongly appropriate for different types of short and long-distance communication applications in the terahertz (THz) wave pulse region.

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Enhanced Artificial Intelligent Method for Representing the Photonic Crystal Fiber Profile Index

Al-Kitab Journal for Pure Sciences ◽

10.32441/kjps.v1i1.87 ◽

2018 ◽

Vol 1 (1) ◽

pp. 2-19

Author(s):

Mahmood Sh. Majeed ◽

Raid W. Daoud

Keyword(s):

Genetic Algorithms ◽

Photonic Crystal ◽

Photonic Crystal Fiber ◽

New Method ◽

Proper Solution ◽

Artificial Intelligent ◽

Crystal Fiber ◽

Fitness Value ◽

First Pass ◽

Crossover And Mutation

A new method proposed in this paper to compute the fitness in Genetic Algorithms (GAs). In this new method the number of regions, which assigned for the population, divides the time. The fitness computation here differ from the previous methods, by compute it for each portion of the population as first pass, then the second pass begin to compute the fitness for population that lye in the portion which have bigger fitness value. The crossover and mutation and other GAs operator will do its work only for biggest fitness portion of the population. In this method, we can get a suitable and accurate group of proper solution for indexed profile of the photonic crystal fiber (PCF).

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