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Bragg Fibers for Absorption-Based Sensing

机译：布拉格光纤，用于基于吸收的传感

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Photonic band gap Bragg fibers can be employed for delivery of high powers in medicine, lighting and heating systems, electricity production, and the development of optical sensors of physical and chemical variables. In this paper, results of testing Bragg fibers with hollow cores for pH detection based on absorbance measurements on solutions filled in the cores. Bragg fibers with claddings of three pairs of high- and low-index layers and hollow cores of 70 µm in diameter were fabricated. Photonic band gap bands of the fibers were estimated theoretically. Aqueous solutions of methyl orange (MO) and hydrochloric acid and bromothymol blue (BTB) in Sörensen buffers were filled into the cores and spectra of MO and BTB were measured for different pH. Calibration curves typical for optical pH sensors were derived from the measured spectra with a reproducibility of about 10%.
机译：光子带隙布拉格光纤可用于在医学，照明和加热系统，电力生产以及物理和化学变量的光学传感器的开发中提供大功率。在本文中，基于对填充在纤芯中的溶液的吸光度测量，测试了带有空心纤芯的布拉格纤维以进行pH检测的测试结果。制造了具有三对高折射率层和低折射率层的包层以及直径为70μm的空心的布拉格纤维。从理论上估计了光纤的光子带隙带。将Sörensen缓冲液中的甲基橙（MO）和盐酸和溴百里酚蓝（BTB）的水溶液填充到岩心中，并测量不同pH下MO和BTB的光谱。光学pH传感器的典型校准曲线是从测得的光谱中得出的，可重复性约为10％。

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