光学学报, 2017, 37 (1): 0106002, 网络出版: 2017-01-13
啁啾倾斜Bragg光纤光栅制作及Raman滤除研究 下载: 522次
Fabrication of Chirped and Tilted Fiber Bragg Gratings and Investigation of Raman Filtering Effect
光纤光学 倾斜Bragg光纤光栅 光纤激光器 受激拉曼散射 fiber optics tilted fiber Bragg grating fiber lasers stimulated Raman scattering
摘要
受激拉曼散射(SRS)是制约光纤激光器功率进一步提升的重要因素之一。提出利用啁啾倾斜Bragg光纤光栅(CTFBG)抑制SRS, 针对1018 nm光纤激光SRS信号设计并制作了1066 nm啁啾倾斜光纤光栅, 搭建实验系统, 对拉曼信号滤除效果进行了验证。结果表明, 设计的CTFBG对1级SRS信号的抑制接近20 dB, 取得了很好的效果。研究结果对利用CTFBG抑制大功率光纤激光振荡器和放大器中的SRS, 进一步提高光纤激光的效率和输出功率具有一定意义。
Abstract
Stimulated Raman scattering (SRS) is one of the important factors which restrict the further improvement of fiber laser power. We propose that using chirped and tilted fiber Bragg gratings (CTFBGs) can suppress SRS. According to the design of optical fiber laser SRS signal of 1018 nm, a CTFBG of 1066 nm is fabricated. An experimental system is established to verify the filtering effect of Raman signal. Results show that the designed CTFBG can suppress the first-order SRS signal about 20 dB, and achieve a good effect. The research results have certain significance for suppressing SRS in high power fiber laser oscillator and amplifier with CTFBG, and for further improving the efficiency and output power of fiber lasers.
张宇菁, 王蒙, 王泽锋, 曹涧秋, 肖虎. 啁啾倾斜Bragg光纤光栅制作及Raman滤除研究[J]. 光学学报, 2017, 37(1): 0106002. Zhang Yujing, Wang Meng, Wang Zefeng, Cao Jianqiu, Xiao Hu. Fabrication of Chirped and Tilted Fiber Bragg Gratings and Investigation of Raman Filtering Effect[J]. Acta Optica Sinica, 2017, 37(1): 0106002.