scholarly journals Design of a liquid sensing photonic crystal fiber with high sensitivity, bireferingence & low confinement loss

2020 ◽  
Vol 28 ◽  
pp. 100335 ◽  
Author(s):  
Md. Jayed Bin Murshed Leon ◽  
Md. Ahasan Kabir
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
High Sensitivity ◽  
Confinement Loss ◽  
Crystal Fiber ◽  
Liquid Sensing

scholarly journals Comparative Analysis of Highly Sensitive PCF for Chemical Sensing in THz Regime

2020 ◽  
Vol 12 (4) ◽  
pp. 94
Author(s):  
Mohammad Saiful Islam ◽  
Anwar Sadath ◽  
Md. Rakibul Islam ◽  
Mohammad Faisal
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Chemical Sensing ◽  
High Sensitivity ◽  
Confinement Loss ◽  
Core Diameter ◽  
Frequency Spectra ◽  
Crystal Fiber ◽  
Sensing Applications ◽  
Design Structure

Nowadays photonic crystal fiber (PCF) is used for sensing purposes in different fields. In this work, we have proposed a PCF based chemical (Benzene and Ethanol) sensor. Finite Element Method (FEM) based software COMSOL 5.3a is used to investigate the numerical characteristics for the proposed structure. From the numerical analysis, we obtained high sensitivity with low losses for an optimum core diameter of 210 µm. Our proposed PCF works on a broad range of core diameters and THz frequency spectra. The fabrication of this model is very simple due to its simplistic design structure. Full Text: PDF ReferencesMd.F.H. Arif, Md.J.H. Biddut, "A new structure of photonic crystal fiber with high sensitivity, high nonlinearity, high birefringence and low confinement loss for liquid analyte sensing applications", Sensing Bio-Sensing Res. 12, 8 (2017). CrossRef P. Kumar, Md.H. Bikash, K. Ahmed, S. Sen, "A Novel Hexahedron Photonic Crystal Fiber in Terahertz Propagation: Design and Analysis", Photonics 6(1), 32 (2019). CrossRef S. Asaduzzaman, K. Ahmed, T. Bhuiyan, T. Farah, "Hybrid photonic crystal fiber in chemical sensing", SpringerPlus 5, 748 (2016). CrossRef Md.S. Islam, J. Sultana, J. Atai, D. Abbott, S. Rana, M.R. Islam, "Ultra low-loss hybrid core porous fiber for broadband applications", App. Opt. 56(4), 1232 (2017). CrossRef S. Atakaramians, S. Afshar, H. Ebendorff-Heidepriem, M. Nagel, B.M. Fischer, D. Abbott, T.M. Monro, "THz porous fibers: design, fabrication and experimental characterization", Opt. Expr. 17(16), 14053 (2009). CrossRef

scholarly journals High Sensitivity of Surface Plasmon Enhanced Refractive Index Sensor Based on Tunable Liquid Core Photonic Crystal Fiber Covered with Four Gold-Films

2021 ◽  
Author(s):  
Zhenkai Fan ◽  
Jianye Qin ◽  
Shichao Chu ◽  
Junling Gao
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Surface Plasmon ◽  
Near Infrared ◽  
Liquid Core ◽  
High Sensitivity ◽  
Confinement Loss ◽  
Refractive Index Sensor ◽  
Crystal Fiber

Abstract A high sensitivity near-infrared photonic crystal fiber (PCF) refractive index sensor based on surface plasmon resonance (SPR) is proposed in this paper. The sensing performance of the PCF refractive index sensor is calculated and analyzed by using the finite element method (FEM). The coated metal material selects for chemically stable gold, which is used to induce SPR. The resonant coupling will occurs when the phase matching condition is met between the surface plasmon polariton (SPP) mode and the fundamental mode. The influence of the diameter of the central hole and the thickness of the gold film on the resonance wavelength and the confinement loss was studied. Numerical results demonstrate that the average sensitivity of the sensor can reach to 3200nm/RIU, which can be used in the field of refractive index detecting.

scholarly journals Theoretical Considerations of Photonic Crystal Fiber with All Uniform-Sized Air Holes for Liquid Sensing

Photonics ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 249
Author(s):  
Abdul Mu’iz Maidi ◽  
Pg Emeroylarffion Abas ◽  
Pg Iskandar Petra ◽  
Shubi Kaijage ◽  
Nianyu Zou ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Nonlinear Coefficient ◽  
Numerical Aperture ◽  
Relative Sensitivity ◽  
Effective Area ◽  
Confinement Loss ◽  
Crystal Fiber ◽  
Sensing Applications ◽  
Liquid Sensing

A novel liquid-infiltrated photonic crystal fiber model applicable in liquid sensing for different test liquids—water, ethanol and benzene—has been proposed. One core hole and three air hole rings have been designed and a full vector finite element method has been used for numerical investigation to give the best results in terms of relative sensitivity, confinement loss, power fraction, dispersion, effective area, nonlinear coefficient, numerical aperture and V-Parameter. Specially, the assessed relative sensitivities of the proposed fiber with water, ethanol and benzene are 94.26%, 95.82% and 99.58%, respectively, and low confinement losses of 1.52 × 10−11 dB/m with water, 1.21 × 10−12 dB/m with ethanol and 6.01 × 10−16 dB/m with benzene, at 1.0 μm operating wavelength. This novel PCF design is considered simple and can be easily fabricated for practical use, and the assessed waveguide properties has determined the potential applicability in real liquid sensing applications.

scholarly journals Design of Highly Sensitive Photonic Crystal Fiber for Sensing Harmful Chemicals

2020 ◽  
Vol 9 (8) ◽  
pp. 804-809
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
High Sensitivity ◽  
Relative Sensitivity ◽  
Confinement Loss ◽  
Crystal Fiber ◽  
Wavelength Sensitivity ◽  
Sensitivity Ratio ◽  
Highly Sensitive ◽  
Mode Area

Highly sensitive Photonic Crystal Fiber (PCF) has been designed and investigated for sensing the most harmful chemicals that exist in the world. The proposed structure of PCF consists of a solid circular core in which the samples of the chemicals are to be filled, surrounded by a hexagonal air-hole ring. The outermost cladding region comprises circular air-holes arranged in a helical (spiral) manner. Moreover, the sensitivity ratio of the liquid samples is investigated with respect to the wavelength. Sensitivity is monitored by checking for different wavelengths that range from 0.4µm to 1.85µm. With this proposed structure, the relative sensitivity of the chemicals such as paraffin liquid (n=1.48), pyridine (n=1.51), and bromobenzene (n=1.56) are found to be 78.49%, 82.99%, and 89.34% respectively. The proposed PCF structure is used to detect chemicals and any liquids due to its high sensitivity, large effective mode area, and low confinement loss

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