· • Proposed PCF based chemical sensor experienced with superior performances than previous PCF based sensor. • For circular type׳s air cavities in both the cladding and core region, it can be easily fabricated by vastly used solgel method. • Dataset is desirable for the benchmark of different chemical sensing application using PCF based sensor. Go to: 1. Data. This article describes the ...
· In the article , an evanescentfield gas sensor based PCF was proposed for gas condensate and air pollution monitoring that achieved the relative sensitivity of % with confinement loss of × 10 − 6 dB/m at the μm wavelength.
· The PCF based spectroscopic gas sensor relies on the improvement of the interaction between light propagation and gas molecules. Therefore, the PCF gas sensors are dependent on porous Core with air holes where the light can interact well with the studied gas [ 15 ].
Application of PCF as Sensor, ... •Nonlinear interactions in gasfilled air holes . Hollow core PBGFs have allowed significant advances in chemical sensing, gasbased nonlinear optics, high power delivery , pulse compression, … Solid Core PCF fiber •Effective index of “cladding” is close to that of air (n=1) •Anomalous dispersion (D>0) over wide range, including visible (enables ...
We have demonstrated and analyzed the methane gas sensor based on octagonal cladding and hexagonal hybrid porous core photonic crystal fiber (HPCPCF) for gas detection purpose. The proposed design of HPCPCF has been numerically investigated by COMSOL Multiphysics software through utilizing the full vectorial finite element method (FEM).
to ×106 dB/m by increasing the airholes diameters located in the outer ring at the wavelength µm. Ademgil et al. [44] proposed ... for the computational study of PCF based gas/ chemical sensors, as a result, we also described the PML effect on sensing. The important sensor parameters such as sensitivity and confinement loss effect due to change of pitch, number of rings, airhole ...
· This paper presents a simple structure of photonic crystal fiber (PCF) based gas sensors. Gas sensors can be used in gas production facilities for safe measurement. The index guiding properties of two rings circular PCF have been analysed for different wavelength with the variation of the diameters of air holes in core and cladding. Finiteelement method has been applied for numerical analysis ...
for optimizing the HPCPCF. In this design, methane gas is utilized in air holes of the core having refractive index of [32]. (a) (b) (c) Figure 2. (a) An entire cross section view of HPC ...
· The air holes of claddings and the core of PCFs open up new opportunities for exploiting the interaction of light with gases via evanescent field effects. The different arrangements of the air holes give a high range of design flexibility to build different PCFs (, hollowcore PCF, microstructure core PCF, suspended core PCF, solid core PCF, kagome PCF) that diverse the gas sensing ...
In this paper, a high sensitivity, polarization preserving photonic crystal fiber (PCF), based on circular air holes for sensing in the terahertz (THz) band, is presented. The finite element method, a practical and precise computational technique for describing the interactions between light and matter, is used to compute the modal properties of the designed fiber.
Md. Ibadul ISLAM et al.: Design and Optimization of Photonic Crystal Fiber Based Sensor for Gas Condensate and Air Pollution Monitoring 235 a result, PCF can be utilized in the nanoparticle ...
This paper proposes a hexagonal photonic crystal fiber (HPCF) structure with all circular air holes in order to simultaneously achieve ultrahigh birefringence and high nonlinearity. The HPCF design consists of an asymmetric core region, where one air hole is a reduced diameter and the air hole in its opposite vertex is omitted. The lightguiding properties of the proposed HPCF structure ...
· The liquid or gas infiltration within the air holes adds the extra sensing capability of the PCF. In solid core PCF, ... The proposed decagonal SCPCF based biosensor contains only circular shaped air holes both in the core as well as in the cladding region. So, the proposed decagonal SCPCF is more feasible to fabricate by employing sol–gel and capillary stacking fabrication technique due ...
· Fabrication of these sensor types are complicated as filling air holes of a PCF is challenging. A high sensitivity of about 19,000 nm/RIU with a resolution of E6 was achieved in their work. MZI based optical sensors have received significant attention because they are robust, compact [17], and lowcost units that also have high levels of precision [18]. Researchers have proposed ...
· geometry was used in constructing the PCFbased sensor. The PCF had a quasicircular shaped cladding and a porous core built only by circular air holes. The realized relative sensitivities for the targeted analytes ethanol, benzene, and water, were %, %, and % at THz, respectively. Later, a hybrid PCF [23] including circular and elliptical air holes was reported for …
· The PCF based gas sensors can detect the concentration of chemical materials such as hydrogen sulfide and methane. This paper presents a hexagonal PCF for sensing these gases. Characteristics of the proposed structure have been investigated for the wavelength range of μm– μm using the full vector finite element method (FEM).
· The RSPCPCF is made of purely silica material with rectangular air holes in core and circular air holes in cladding. The COMSOL Multiphysics software with version is used as a …
The IGPCF, with a cladding consisting of air holes and a solid core that runs along the entire fiber length, is capable of confining light in the core by modified total internal reflection and has created new possibilities for the interactions of optical field and gases. In 1999, Monro et al. theoretically proposed a holey fiber gas sensor based on the direct absorption spectroscopy (DAS ...
Fig. 1 illustrates the cross section of proposed PCFSPR sensors incorporating twentyseven various sized air holes, which are hexagonally arranged on a silica background. As can be seen, circularshaped Perfectly Matched Layers (PMLs) are employed around the sensor boundaries [25], [26]. The metal layers are placed on the face of four analyte ...
Although, many papers have been reported on PCF based gas sensors, a great challenge takes place to the researchers for the enhancement of the sensitivity and reduction of confinement loss of PCF based gas sensors (Yu et al. 2008). X. Yu et al. at 2008 experimentally investigated a evanescent field absorption sensor where a PureSilica DefectedCore Photonic Crystal Fiber was used. They ...
A modified Dshaped photonic crystal fiber (PCF) based on Sagnac interferometer is proposed for methane concentration sensing. Two ultralarge air holes with methanesensitive film are distributed horizontally in the PCF to shorten response time. Besides, a defect hole is introduced into the fiber core and theoretical analysis is carried out to enhance the sensing sensitivity.
· A modified Dshaped photonic crystal fiber (PCF) based on Sagnac interferometer is proposed for methane concentration sensing. Two ultralarge air holes with methanesensitive film are distributed horizontally in the PCF to shorten response time. Besides, a defect hole is introduced into the fiber core and theoretical analysis is carried out to enhance the sensing sensitivity.
· Proposed PCF based chemical sensor experienced with superior performances than previous PCF based sensor. • For circular type׳s air cavities in both the cladding and core region, it can be easily fabricated by vastly used solgel method. • Dataset is desirable for the benchmark of different chemical sensing application using PCF based sensor. 1. Data. This article describes the ...
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