Abstract
A vertical photonic crystal fiber (V-PCF) and a horizontal PCF (H-PCF) are designed for the detection of sulfur dioxide (SO2) in this paper. A demanding numerical investigation is carried out in a wider range of wavelengths from 0.8 to 1 μm. SO2 is a major contributor to air pollution, which is responsible for asthma and cancer. The optical parameters are analyzed by using the finite element method (FEM) which consumes a completely circular isotropic perfectly matched layer (PML). The designed V-PCF sensor test is performed with different PML radius values, different elliptical constants for the inner cladding, the outer cladding layer, and the core. The higher relative sensitivity of 59.34% makes this proposed V-PCF a good design for SO2 detection.
Highlights
Sulfur dioxide (SO2) is an incomprehensible gas, with a pungent smell
The vertical photonic crystal fiber (V-Photonic crystal fiber (PCF)) gas sensor's elliptical constant is compared with a different elliptical constant
The core of the V-PCF sensor is compared with other core elliptical constant. 3.1
Summary
Sulfur dioxide (SO2) is an incomprehensible gas, with a pungent smell. Approximately 99% of airborne SO2 originates from human resources. Areas that have produced this SO2, such as the Salt Lake Basin and Rocky Mountain, cause lower respiratory disease in children [1]. By attaching and limiting air holes at regular intervals, the PCF guides the light, and these holes run along the length of the fibers. Because of its ability to control light in hollow bodies, the loss of blockage is very low and the contact of light is increased, resulting in increased fiber sensitivity [2]. Conventional fibers suffer from limited design flexibility in the core and increased complexity in finding lower value containment loss and sensitivity, limited core size, and difficult selection of materials [8,9]. For gas sensors and liquid sensors, the hollow-core PCFs are more suited
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