Designing of Fiber Bragg Gratings for Long-distance Optical Fiber Sensing Networks

Research data of <em>Modelling and Simulation in Engineering </em>journal article “Designing of Fiber Bragg Gratings for Long-distance Optical Fiber Sensing Networks”. Most optical sensors on the market are optical fiber Bragg grating (FBG) sensors with low reflectivity (typically 7-40%) and low side-lobe suppression (SLS) ratio (typically SLS &lt;15dB), which prevents these sensors from being effectively used for long-distance remote monitoring and sensor network solutions. This research is based on designing the optimal grating structure of FBG sensors and estimating their optimal apodization parameters necessary for sensor networks and long-distance monitoring solutions. Gaussian, sine and raised sine apodizations are studied to achieve the main requirements, which are - maximally high reflectivity (at least 90%) and side-lobe suppression (at least 20 dB), as well as maximally narrow bandwidth (FWHM&lt;0.2 nm), FBGs with uniform (without apodization). Results gathered in this research propose high-efficiency FBG grating apodizations, which can be further physically realized for optical sensor networks and long-distance (at least 40 km) monitoring solutions.本数据集源自《工程建模与仿真（Modelling and Simulation in Engineering）》期刊刊发的论文《面向长距离光纤传感网络的光纤布拉格光栅设计》。目前市场上主流光学传感器多为光纤布拉格光栅（Fiber Bragg Grating, FBG）传感器，但这类传感器普遍存在反射率偏低（通常为7%~40%）与旁瓣抑制比（Side-Lobe Suppression, SLS）不足的问题，典型旁瓣抑制比低于15dB，这使得其难以有效应用于长距离远程监测及传感网络解决方案中。本研究围绕FBG传感器的最优光栅结构设计展开，并推导适配传感网络与长距离监测场景所需的最优切趾参数。为达成核心性能目标——最高反射率（不低于90%）、高旁瓣抑制比（不低于20dB）以及最窄带宽（半高全宽Full Width at Half Maximum, FWHM<0.2nm），本研究对高斯切趾、正弦切趾与升余弦切趾三种切趾方式进行了研究，同时对比了未施加切趾的均匀FBG的性能表现。本研究所得结果提出了高效可行的FBG光栅切趾方案，该方案可进一步实现物理制备，适配光学传感网络及至少40km的长距离监测场景。