Design of a porous cored hexagonal photonic crystal fiber based optical sensor with high relative sensitivity for lower operating wavelength

Abstract

Abstract: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 m to 1.8 m. 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.

Design of terahertz spectroscopy based optical sensor for chemical detection

“…Zeonor is used as the background material of this proposed terahertz RH-CPCF. The perfectly match layered (PML) and FEM method are used to determine all numerical results [28] 57. 18 1.11 × 10 −11 5 Elliptical holes in porous Hexagonal PCF 3 [33] 61.45 1.41 × properly.…”

“…Zeonor is used as the background material of the reported RH-CPCF sensor. To compare with recent published articles [22][23][24][25][26][27][28][29][30][31][32][33][34], the proposed RH-CPCF shows the better performance of sensitivity and confinement loss are 76.44%, 77.16%, 73.20% and 2.33 × 10 −03 dB/m, 3.07 × 10 −06 dB/m, 2.84 × 10 −02 dB/m for ethanol, benzene and water respectively at 1 THz frequency. So, this suggested RH-CPCF is highly useful in biomedicine and industrial chemicals research for sensing applications in the terahertz frequency range.…”

Design and optimization of photonic crystal fiber based sensor for gas condensate and air pollution monitoring

“…It is the most obtainable approach to engineer for structuring and developing photonic elements and devices [42]. To investigate propagation properties of leaky modes, the PML as boundary conditions is an essential approach in PCFs and by employing these layers, all optical propagation characteristics can be appraised in a single run [41,43,44]. Figure 2 exhibits the fundamental mode field distributions along x-polarization [ Fig.…”

Benzene Shape Photonic Crystal Fiber Based Plasma Sensor: Design and Analysis

“…The COMSOL multi-physics 4.2 software has been employed to simulate and design the proposed structure. An outer boundary known as perfectly matched layer (PML) has been applied for diminished nonphysical scattering with a thickness of 10% following the articles [30][31][32][33]. Figure 1(c) visualizes the modal intensity of the proposed structure and it is nicely exhibited that light is tightly confined through the core region.…”