Effect of light source spectral modulation on wavelength interrogation in fiber Bragg grating sensors and its reduction
Effect of light source spectral modulation on wavelength interrogation in fiber Bragg grating sensors and its reduction
复制标题
光源光谱调制对光纤布拉格光栅传感器波长询问的影响及其降低
DOI：
10.1109/jsen.2003.809027
复制
发表时间：
2003
影响因子：
4.3
通讯作者：
T. Yoshino
中科院分区：
文献类型：
--
作者：
Y. Sano;T. Yoshino
在以超发光二极管为光源、以阵列波导光栅为波长询问器的光纤布拉格光栅传感中，对超发光二极管的光谱调制引起的波长测量误差进行了理论推导和计算机仿真定量分析。结果表明，实际超发光二极管的波长测量误差与理论结果吻合得很好。为了减小由于超发光二极管的光谱调制引起的波长测量误差，提出了利用超发光二极管的温度开关和调节光纤布拉格光栅和阵列波导光栅带宽的两种不同的补救措施，并对其效果进行了实验验证，定量结果与理论计算结果吻合较好。
In the fiber Bragg grating sensing using a superluminescent diode as the light source and an arrayed waveguide grating as the wavelength interrogator, the wavelength measurement error due to the spectral modulation of the superluminescent diode is theoretically formulated and quantitatively analyzed by computer simulation. It is shown that the wavelength measurement errors produced with the use of real superluminescent diodes are in very good agreement with the theoretical results. In order to reduce the wavelength measurement error due to the spectral modulation of superluminescent diode, two different types of remedies are proposed that utilize the temperature switching of superluminescent diode and that adjust the bandwidths of fiber Bragg grating and arrayed waveguide grating, and their efficacies are experimentally demonstrated together with good quantitative agreement with the theoretical calculation.