In-Line Chemical Sensing Device with C-type Fiber and Photonic Crystal Fiber

2010 ◽  
Author(s):  
Jiyoung Park ◽  
Yongmin Jung ◽  
Jens Kobelke ◽  
Kyunghwan Oh
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Chemical Sensing ◽  
Crystal Fiber ◽  
Type Fiber

scholarly journals A Highly Birefringent Photonic Crystal Fiber for Terahertz Spectroscopic Chemical Sensing

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1799
Author(s):  
Tianyu Yang ◽  
Liang Zhang ◽  
Yunjie Shi ◽  
Shidi Liu ◽  
Yuming Dong
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Chemical Sensing ◽  
Numerical Aperture ◽  
Wide Band ◽  
Relative Sensitivity ◽  
Chemical Sensitivity ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Polarization Maintaining

A photonic crystal fiber (PCF) with high relative sensitivity was designed and investigated for the detection of chemical analytes in the terahertz (THz) regime. To ease the complexity, an extremely simple cladding employing four struts is adopted, which forms a rectangular shaped core area for filling with analytes. Results of enormous simulations indicate that a minimum 87.8% relative chemical sensitivity with low confinement and effective material absorption losses can be obtained for any kind of analyte, e.g., HCN (1.26), water (1.33), ethanol (1.35), KCN (1.41), or cocaine (1.50), whose refractive index falls in the range of 1.2 to 1.5. Besides, the PCF can also achieve high birefringence (∼0.01), low and flat dispersion, a large effective modal area, and a large numerical aperture within the investigated frequency range from 0.5 to 1.5 THz. We believe that the proposed PCF can be applied to chemical sensing of liquid and THz systems requiring wide-band polarization-maintaining transmission and low attenuation.

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 Characteristics of Ultrasensitive Hexagonal-Cored Photonic Crystal Fiber for Hazardous Chemical Sensing

Photonics ◽  
2022 ◽  
Vol 9 (1) ◽  
pp. 38
Author(s):  
Abdul Mu’iz Maidi ◽  
Norazanita Shamsuddin ◽  
Wei-Ru Wong ◽  
Shubi Kaijage ◽  
Feroza Begum
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Chemical Sensing ◽  
Chromatic Dispersion ◽  
Relative Sensitivity ◽  
Crystal Fiber ◽  
Hazardous Chemical ◽  
Sensing Applications ◽  
Vector Finite Element Method ◽  
Vector Finite Element

A highly sensitive non-complex cored photonic crystal fiber sensor for hazardous chemical sensing with water, ethanol, and benzene analytes has been proposed and is numerically analyzed using a full-vector finite element method. The proposed fiber consists of a hexagonal core hole and two cladding air hole rings, operating in the lower operating wavelength of 0.8 to 2.6 µm. It has been shown that the structure has high relative sensitivity of 94.47% for water, 96.32% for ethanol and 99.63% for benzene, and low confinement losses of 7.31 × 10−9 dB/m for water, 3.70 × 10−10 dB/m ethanol and 1.76 × 10−13 dB/m benzene. It also displays a high power fraction and almost flattened chromatic dispersion. The results demonstrate the applicability of the proposed fiber design for chemical sensing applications.

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