【摘要】 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。更多还原

【Abstract】 The transmission rate, wavelength of the reflected peak, FWHM of peak for the fiber grating FP cavity are analyzed. That transmission rate and the FWHM of the fiber grating FP are very sensitivity for radial strain. But the central wavelength, mode number of the fiber grating FP are insensitivity for radial strain. As the rate of the length of the fiber grating and fiber grating FP cavity is less than 03, the strain change on the effect of the fiber grating FP cavity work in single mode is less.更多还原