激光与光电子学进展, 2017, 54 (2): 020603, 网络出版: 2017-02-10
基于动态相位掩模板法的啁啾光纤光栅的制作 下载: 599次
Chirped Fiber Grating Fabrication Based on Dynamic Phase Mask Method
摘要
提出了一种利用均匀相位掩模板制作啁啾光纤光栅(FBG)的方法。在对光纤的扫描曝光过程中, 相位掩模板沿长度方向周期性抖动, 且抖动幅度随光栅扫描长度的变化而变化, 使FBG的相位随着掩模板位置的变化而变化, 实现了FBG周期的线性调制, 从而得到线性啁啾FBG。掩模板抖动振幅的变化规律决定了FBG的啁啾系数。设计了3种不同的相位掩模板抖动函数, 实验制作了不同啁啾量的FBG。
Abstract
A method for chirped fiber Bragg grating (FBG) fabrication using an uniform phase mask is proposed. In the scanning exposure process, the phase mask jitters periodically along the length direction, and the jittering amplitude varies with the grating scanning length, which causes the phase of FBG changing with the position of the mask. As a result, the period of FBG is modulated linearly, and a linely chirped FBG is obtained. The chirped coefficient of FBG is determined by the variation of the jittering amplitude of phase mask. Three different jittering functions of phase mask are designed, and FBGs with different chirp values are fabricated in experiment.
吕京生, 宋志强, 祁海峰, 倪家升, 王昌, 王洪忠. 基于动态相位掩模板法的啁啾光纤光栅的制作[J]. 激光与光电子学进展, 2017, 54(2): 020603. Lü Jingsheng, Song Zhiqiang, Qi Haifeng, Ni Jiasheng, Wang Chang, Wang Hongzhong. Chirped Fiber Grating Fabrication Based on Dynamic Phase Mask Method[J]. Laser & Optoelectronics Progress, 2017, 54(2): 020603.