Author Affiliations
Abstract
1 Department of Information and Communication Technology, Mawlana Bhashani Science and Technology University Santosh, Tangail-1902, Bangladesh
2 Group of Bio-Photomatriχ, Tangail-1902, Bangladesh
3 Department of Software Engineering, Daffodil International University, Sukrabad, Dhaka, Bangladesh
A micro structure porous cored octagonal photonic crystal fiber (P-OPCF) has been proposed to sense aqueous analysts (alcohol series) over a wavelength range of 0.80 μm to 2.0 μm. By implementing a full vectorial finite element method (FEM), the numerical simulation on the proposed O-PCF has been analyzed. Numerical investigation shows that high sensitivity can be gained by changing the structural parameters. The obtained result shows the sensitivities of 66.78%, 67.66%, 68.34%, 68.72%, and 69.09%, and the confinement losses of 2.42×10
-10 dB/m, 3.28×10
-11 dB/m, 1.21×10
-6 dB/m, 4.79×10
-10 dB/m, and 4.99×10
-9 dB/m at the 1.33 μm wavelength for methanol, ethanol, propanol, butanol, and pentanol, respectively can satisfy the condition of much legibility to install an optical system. The effects of the varying core and cladding diameters, pitch distance, operating wavelength, and effective refractive index are also reported here. It reflects that a significant sensitivity and low confinement loss can be achieved by the proposed P-OPCF. The proposed P-OPCF also covers the wavelength band (O+E+S+C+L+U). The investigation also exhibits that the sensitivity increases when the wavelength increases like SO-band
Porous cored OPCF Porous cored OPCF alcohol sensor alcohol sensor sensitivity sensitivity confinement loss confinement loss transmission band transmission band Photonic Sensors
2017, 7(2): 123
Author Affiliations
Abstract
1 Department of Information and Communication Technology, Mawlana Bhashani Science and Technology University, Santosh, Tangail-1902, Bangladesh
2 Group of Biophotomatix, Bangladesh
In this article, highly sensitive and low confinement loss enriching micro structured photonic crystal fiber (PCF) has been suggested as an optical sensor. The proposed PCF is porous cored hexagonal (P-HPCF) where cladding contains five layers with circular air holes and core vicinity is formed by two layered elliptical air holes. Two fundamental propagation characteristics such as the relative sensitivity and confinement loss of the proposed P-HPCF have been numerically scrutinized by the full vectorial finite element method (FEM) simulation procedure. The optimized values are modified with different geometrical parameters like diameters of circular or elliptical air holes, pitches of the core, and cladding region over a spacious assortment of wavelength from 0.8 μm to 1.8 μm. All pretending results exhibit that the relative sensitivity is enlarged according to decrement of wavelength of the transmission band (O+E+S+C+L+U). In addition, all useable liquids reveal the maximum sensitivity of 57.00%, 57.18%, and 57.27% for n=1.33, 1.354, and 1.366 respectively by lower band. Moreover, effective area, nonlinear coefficient, frequency, propagation constant, total electric energy, total magnetic energy, and wave number in free space of the proposed P-HPCF have been reported recently.
Optical sensor relative sensitivity porous core PCF confinement loss transmission band effective area Photonic Sensors
2017, 7(1): 55
Author Affiliations
Abstract
1 Department of Information and Communication Technology (ICT), Mawlana Bhashani Science and Technology University (MBSTU), Tangail-1902, Bangladesh
2 Department of Material and Metallurgical Engineering (MME), Bangladesh University of Engineering and Technology University (BUET), Dhaka-1000, Bangladesh
This paper proposes a hexagonal photonic crystal fiber (H-PCF) structure with high relative sensitivity for liquid sensing; in which both core and cladding are microstructures. Numerical investigation is carried out by employing the full vectorial finite element method (FEM). The analysis has been done in four stages of the proposed structure. The investigation shows that the proposed structure achieves higher relative sensitivity by increasing the diameter of the innermost ring air holes in the cladding. Moreover, placing a single channel instead of using a group of tiny channels increases the relative sensitivity effectively. Investigating the effects of different parameters, the optimized structure shows significantly higher relative sensitivity with a low confinement loss.
Photonic crystal fiber (PCF) liquid sensor microstructure core sensitivity confinement loss Photonic Sensors
2016, 6(3): 279
