scholarly journals Numerical simulation of square-lattice photonic crystal fiber with high birefringence and low confinement loss

2006 ◽  
Vol 55 (1) ◽  
pp. 238
Author(s):  
Li Shu-Guang ◽  
Xing Guang-Long ◽  
Zhou Gui-Yao ◽  
Hou Lan-Tian
Keyword(s):  
Numerical Simulation ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Square Lattice ◽  
Confinement Loss ◽  
High Birefringence ◽  
Crystal Fiber

High birefringent, low loss and flattened dispersion asymmetric slotted core-based photonic crystal fiber in THz regime

2019 ◽  
Vol 33 (20) ◽  
pp. 1950218 ◽  
Author(s):  
Md. Khairum Monir ◽  
Mahmudul Hasan ◽  
Bikash Kumar Paul ◽  
Kawsar Ahmed ◽  
Hala J. El-Khozondar ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Real Life ◽  
Simulation Software ◽  
Confinement Loss ◽  
Low Loss ◽  
Material Loss ◽  
Scattering Loss ◽  
High Birefringence ◽  
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.

scholarly journals High birefringence photonic crystal fiber with high nonlinearity and low confinement loss

2015 ◽  
Vol 23 (7) ◽  
pp. 8329 ◽  
Author(s):  
Tianyu Yang ◽  
Erlei Wang ◽  
Haiming Jiang ◽  
Zhijia Hu ◽  
Kang Xie
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Confinement Loss ◽  
High Birefringence ◽  
Crystal Fiber ◽  
High Nonlinearity

High birefringence and broadband dispersion compensation photonic crystal fiber

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Md. Mahbub Hossain ◽  
Md. Shamim Ahsan ◽  
Niloy Sikder ◽  
Md. Ekhlasur Rahaman ◽  
Abdullah Al-Mamun Bulbul ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Wavelength Division Multiplexing ◽  
Dispersion Compensation ◽  
Wide Band ◽  
Square Lattice ◽  
Relative Dispersion ◽  
Dispersion Slope ◽  
High Birefringence ◽  
Crystal Fiber

AbstractWe propose a perfectly square lattice photonic crystal fiber (PCF) which shows high birefringence and negative dispersion. To set up high asymmetry in the core, dual line imperfection is considered where the fill fraction ratio and defect air hole diameter exhibit significant impact on dispersion and birefringence. Numerical analyses of guiding properties of the proposed PCF are done using finite element method with perfectly matched layer boundary condition from 1.2 to 1.8 μm wavelength. The optimized square lattice PCF presents high birefringence of 2.48 × 10−2 and dispersion of −777.66 (ps/nm.km) at 1.55 μm wavelength. In addition, the proposed PCF offers ultra-low confinement and insertion loss at 1.55 μm wavelength. Moreover, −0.45 (ps/nm2.km) dispersion slope and 0.0045 nm−1 relative dispersion slope are observed at 1.55 μm wavelength. Additionally, the proposed PCF maintains dispersion and birefringence variation of ±30 (ps/nm.km) and ±0.00001 between 1.5 and 1.6 μm wavelength ranges, respectively. Furthermore, the proposed PCF shows high quality factor and low bit error rate at 10 dBm input power. We believe the proposed square lattice PCF can be deployed in wavelength division multiplexing based optical fiber transmission system for wide-band dispersion compensation.

scholarly journals High sensitive triangular photonic crystal fiber sensor design applicable for gas detection

2021 ◽  
Vol 10 (1) ◽  
pp. 1-5
Author(s):  
A. Abbaszadeh ◽  
S. Makouei ◽  
S. Meshgini
Keyword(s):  
Photonic Crystal ◽  
Gas Sensor ◽  
Photonic Crystal Fiber ◽  
Relative Sensitivity ◽  
Effective Area ◽  
Industrial Applications ◽  
Confinement Loss ◽  
The Finite Element Method ◽  
High Birefringence ◽  
Crystal Fiber

A new triangular photonic crystal fiber with a based microstructure core gas sensor has been proposed for the wavelength range from 1.1μm to 1.7μm. The guiding trait of the proposed structure depends on geometric parameters and wavelength, which are numerically studied by the finite element method. According to the results, the relative sensitivity obtained as high as 75.14% at 1.33μm wavelength. high birefringence and effective area are also obtained by order of 3.75×10-3 and 14.07 μm2 finally, low confinement loss of 1.41×10-2 dB/m is acquired at the same wavelength. The variation of the diameters in the cladding and core region is investigated and the results show that this structure has good stability for manufacturing goals. Since the results show the highest sensitivity at wavelengths around 1.2μm to 1.7μm, which is the absorption line of many gases such as methane (CH4), hydrogen fluoride (HF), ammonia (NH3), this gas sensor can be used for medical and industrial applications.

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