论文部分内容阅读
对光纤光栅F P干涉仪在轴向应变作用下的透射率、峰值波长、光谱半宽度、工作模式等参量的变化进行了分析。发现光纤光栅F P干涉仪的透射率和光谱半宽度对轴向应变十分敏感,而F P腔的中心波长和工作模式却变化较小。当腔长与栅长之比小于0 3时,应力变化对工作模式的影响较小。
The change of parameters such as transmittance, peak wavelength, half width of spectrum and working mode of FBG interferometer under axial strain were analyzed. It was found that the transmissivity and spectral half-width of FBG interferometer are sensitive to axial strain, while the center wavelength and operating mode of FB cavity change little. When the ratio of cavity length to gate length is less than 0 3, the change in stress has less effect on the operating mode.