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We aim to capture, store and preserve the scholarly output of Nanyang Technological University (NTU) and make it available to the global research community. The repository contains open access collections.
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基于差分进化算法的光纤布拉格光栅 横向局部应力与温度分离技术 = Simultaneous measurement of stress and temperature of fiber Bragg grating under local transverse force using differential evolution (2014)鉴于横向应力和温度对光纤布拉格光栅的交感耦合呈现非线性关系，将横向局部应力与温度的交感问题转化为非线性系统参数辨识问题: 首先根据光纤布拉格光栅横向应力与温度的传感原理构造一个理论意义上的反射光谱，然后利用理论光谱和采样光谱之间的差异度建立系统参数辨识模型，通过差分进化算法对该优化辨识模型进行求解，最终实现横向局部应力与温度的同时测量。实验和仿真结果表明，本文提出的方法具有较高的辨识精度，得到的横向应力误差绝对值一般小于4．0 ×10 － ...
Tunable electromagnetically induced transparency in coupled three-dimensional split-ring-resonator metamaterials (2016)Metamaterials have recently enabled coupling induced transparency due to interference effects in coupled subwavelength resonators. In this work, we present a three dimensional (3-D) metamaterial design with six-fold ...
(2015)The fatigue damage problems are frequently encountered in the design of civil engineering structures. A realistic and accurate fatigue life prediction is quite essential to ensure the safety of engineering design. However, ...
(2016)We demonstrated a widely tunable Tm-doped mode-locked all-fiber laser, with the widest tunable range of 136 nm, from 1842 to 1978 nm. Nonlinear polarization evolution (NPE) technique is employed to enable mode-locking and ...
(2017)Microsecond and nanosecond lasers have been studied in the past for laser cleaning applications, but femtosecond laser is rarely used for cleaning due to the greater possibility of ablation from the extremely high peak ...