This work proposes and statistically analyzes a hexagonal-shaped hollow-core photonic crystal fiber-based edible oil sensor in the terahertz (THz) range. The suggested sensor’s performance was assessed by means of Comsol Multiphysics, a finite element method-based commercial tool. The simulation results demonstrate that the suggested sensor has more than 99% relative sensitivity for different types of edible oils at 1.6 THz under ideal geometric conditions. Furthermore, the suggested sensor exhibits low confinement loss, high numerical aperture and effective area at optimal geometry and operational conditions. The proposed sensor is realizable using conventional production procedures and its superior sensing qualities may make it a key component of real-world oil detection systems.
Photonic-crystal-fiber (PCF) based sensors in the terahertz spectrum have been immensely studied and implemented due to their unique advantages and high sensitivity. At an early stage, conventional and hybrid structured porous core PCF-based sensors were proposed, but the sensitivity was not so high. With the advancement of PCF fabrication technology, hybrid structured hollow-core PCFs have been reported and offer superior sensing characteristics than the previous types. In this chapter, both porous core and hollow-core PCF-based THz sensors are analyzed and the propagation characteristics are explained using terahertz spectrum. Finally, some promising terahertz sensors are studied and compared at the end of this chapter.
<p>A brief overview of present
electricity demand, supply, projection of them and renewable energy generation
and progress has been presented in this paper. Electricity is the major source
of power for most of the country's economic activities. According to the Bangladesh
Power Development Board in July 2018, 90 percent of the population had access
to electricity. However per capita energy consumption in Bangladesh is
considered low. The country has a very limited energy reserve; small amounts of
oil, coal and countable natural gas reserves. The country suffers an internal
energy struggle, as about 88% of the country’s power producing thermal plants
are gas-based. To solve this problem, renewable energy is being used.</p>
<p>A brief overview of present
electricity demand, supply, projection of them and renewable energy generation
and progress has been presented in this paper. Electricity is the major source
of power for most of the country's economic activities. According to the Bangladesh
Power Development Board in July 2018, 90 percent of the population had access
to electricity. However per capita energy consumption in Bangladesh is
considered low. The country has a very limited energy reserve; small amounts of
oil, coal and countable natural gas reserves. The country suffers an internal
energy struggle, as about 88% of the country’s power producing thermal plants
are gas-based. To solve this problem, renewable energy is being used.</p>
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