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Photonic Crystal Waveguide Biochemical Sensor for the Approximation of Chemical Components Concentrations

机译：光子晶体波导生物化学传感器，用于近似化学成分浓度

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摘要

The rapid progress in chemical and biochemical applications with optical interfaces has motivated an ever-increasing demand for highly sensitive, accurate, and disposable photonic components. We propose a design of biochemical sensor to identify the chemical components acid concentrations with a greater accuracy using photonic crystal waveguide (PCW). It consists of circular air holes of radius 0.44 a (a being the lattice constant), arranged in a hexagonal structure on silicon on insulator (SOI). Due to change in refractive index of the sample, resonance wavelength shifts towards higher wavelengths (red shift) with a higher coefficient of determination. The proposed design allows desired input wavelength of 1550 nm to be guided in the waveguide for an effective identification of chemical component concentration. Resolution and limit of detection are calculated as 1.2 nm and 4 x 10(-2) RIU for sulfuric acid (H2SO4) solution and 0.2 nm and 2 x 10(-2) RIU for hydrogen peroxide (H2O2) solution. Improved sensitivities with increased standard deviations are achieved after structural optimization.
机译：使用光学界面的化学和生化应用的快速进展是对高度敏感，准确，一次性光子部件的不断增长的需求。我们提出了一种生化传感器的设计，以鉴定使用光子晶体波导（PCW）更高的精度更高的化学成分酸浓度。由半径0.44a（晶格常数为晶格常数的圆形空气孔组成，布置在绝缘体上的硅（SOI）上的六边形结构中。由于样品的折射率的变化，具有较高的测定系数，谐振波长朝向更高波长（红色移位）变化。所提出的设计允许在波导中引导1550nm的所需输入波长，以便有效鉴定化学成分浓度。用于硫酸（H 2 SO 4）溶液的1.2nm和4×10（-2）Riu的分辨率和检测限为0.2nm和2×10（-2）Riu，用于过氧化氢（H2O2）溶液。在结构优化之后实现了具有增加的标准偏差的敏感性。

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