线性啁啾光栅的反射光延迟调谐的研究

The Study of Modulate Time-delay of the Reflex in Chirped Fiber Grating

提出通过变化线性啁啾光栅长度,达到调制的反射光延迟时的目的.在单模光纤中的光方程的基础上,对Bragg方程中的折射率、周期、反射光的反射点三个参数进行数学分析,得到了Bragg波长反射光延时量与线性啁啾光栅长度变化量成正比的结论.提出了延迟量为450ps的连续可调的延迟线模型.

The author proposes the method that modulate time-delay of the reflex with changing the length of chirped fiber grating with an optical carrier at constant wavelength. Analysing three of refactive index and periods and reflect point in Bragg equation by the maths method base on the trasmition equation of the single mode fiber, the conclusion that the magnitude of true-time delay of the Bragg Wavelength reflex in a line chirped fiber grating is in directly proportion to the elongation of the line chirped fiber grating. In this paper, the schem that can analog modulates the magnitude of true-time delay of 450 ps is introduced.