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Ultra-compact photonic crystal based water temperature sensor

机译:基于超紧凑光子晶体的水温传感器

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We design an ultra-compact water temperature sensor by using the photonic crystal technology on the InP substrate at the 1.55-μm wavelength window. The photonic crystal consists of rods in a hexagonal lattice and a polymethyl methacrylate (PMMA) background. By using the plane wave expansion (PWE) method, the lattice constant and radius of rods are obtained, 520 nm and 80.6 nm, respectively. With a nanocavity placed in the waveguide, a resonance peak is observed at the 1.55-μm wavelength window. Any change of the water temperature inside the nanocavity results in the shift of the resonance wavelength. Our simulations show a shift of about 11 nm for a temperature change of 22.5 ℃. The resonance wavelength has a linear relation with the water temperature.
机译:我们通过在InP衬底上以1.55-μm波长窗口使用光子晶体技术设计超紧凑水温传感器。光子晶体由六边形晶格中的棒和聚甲基丙烯酸甲酯(PMMA)背景组成。通过使用平面波扩展(PWE)方法,可以获得棒的晶格常数和半径,分别为520 nm和80.6 nm。在波导中放置纳米腔后,在1.55μm波长窗口处观察到共振峰。纳米腔内水温的任何变化都会导致共振波长的偏移。我们的仿真显示,温度变化22.5℃时,位移约11 nm。共振波长与水温成线性关系。

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