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以工作在特定波段的光子晶体温度传感器作为研究对象,通过具体的数值模拟发现:温度变化时,基于光子晶体的热膨胀效应和热光效应,透射峰峰值保持不变,同时透射峰和光子带隙发生漂移。测量透射峰中心波长或光子带隙的起始波长即可得到光子晶体对温度变化的灵敏度。分析了介质层的厚度误差对光子晶体温感特性的影响。引入误差后,透射峰与光子晶体温度传感器的灵敏度保持不变,但透射峰的中心波长与光子带隙所在波段发生改变,从而影响了光子晶体温度传感器的工作波段。
Taking a photon crystal temperature sensor working in a specific wavelength band as a research object, the numerical simulation shows that: at temperature change, the peak value of the transmission peak remains constant based on the thermal expansion effect and the thermo-optic effect of the photonic crystal while the transmission peak and the photonic band gap Drift occurs. The sensitivity of the photonic crystal to temperature changes can be obtained by measuring the starting wavelength of the center of the transmission peak or the photonic bandgap. The influence of the thickness error of the dielectric layer on the temperature sensitivity of the photonic crystal is analyzed. The introduction of the error, the sensitivity of the transmission peak and the photonic crystal temperature sensor remain unchanged, but the center wavelength of the transmission peak and photonic bandgap where the band changes, thus affecting the photonic crystal temperature sensor working band.