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利用相位掩膜板 ,直接在掺铒光纤上紫外写入 π/2相移光栅 ,研制出 10 cm长相移分布反馈 ( DFB)光纤激光器 ,并对其调制特性进行了研究。
The phase mask was used to write the π / 2 phase shift grating directly on the erbium - doped fiber, and a 10 cm length phase - shift distributed feedback (DFB) fiber laser was developed. The modulation characteristics were also studied.