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Optimization design of temperature-insensitive Bragg gratings inscribed in ethanol-filled photonic crystal fibers

机译:填充乙醇的光子晶体光纤中对温度不敏感的布拉格光栅的优化设计

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摘要

A temperature-insensitive fiber Bragg grating (FBG) inscribed in ethanol-filled photonic crystal fibers (PCF) is designed and optimized. A structural PCF is proposed in which the diameters of the air holes of the first ring are larger than the other air holes. The structural PCF is designed and optimized via full-vector finite element method and genetic algorithms. The calculated Bragg wavelength shift (BWS) of FBG inscribed in ethanol-filled PCF is 31 pm while the temperature changes from -15℃ to 55℃. When the temperature changes from 0℃ to 40℃, the BWS is as small as 10 pm, and the thermal sensitivity of the Bragg wavelength is 0.25 pm/℃.
机译:设计并优化了刻在乙醇填充光子晶体光纤(PCF)中的对温度不敏感的光纤布拉格光栅(FBG)。提出了一种结构PCF,其中第一环的气孔的直径大于其他气孔的直径。通过全矢量有限元法和遗传算法对结构PCF进行了设计和优化。乙醇填充的PCF中刻写的FBG的布拉格波长位移​​(BWS)为31 pm,而温度从-15℃变为55℃。当温度从0℃变为40℃时,BWS减小至10 pm,布拉格波长的热灵敏度为0.25 pm /℃。

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