中国激光, 2015, 42 (4): 0405009, 网络出版: 2015-04-08  

高功率掺铥光纤放大器中受激布里渊散射效应研究

Research of Stimulated Brillouin Scattering Effect in High-Power Tm3+-Doped Fiber Amplifiers
张美 1,2,*延凤平 1,2刘硕 1,2尹智 1,2
作者单位
1 北京交通大学全光网络与现代通信网教育部重点实验室, 北京 100044
2 北京交通大学光波技术研究所, 北京 100044
摘要
近年来随着对单频光纤激光器和放大器研究的不断深入,得到了越来越高的输出功率,由于单频光纤激光器、放大器的输出功率在很大程度上受限于受激布里渊散射(SBS)效应,故需要研究SBS 效应的影响因素和抑制方法。利用铥离子(Tm3+)的速率方程和SBS 效应下双包层光纤放大器的速率方程,建立了单频光纤放大器的理论模型,计算得到了掺铥光纤放大器的能量分布和输出功率,并讨论了光纤长度、抽运功率、Tm3+掺杂浓度、增益光纤内温度分布等因素对单频光纤放大器中SBS 效应和输出功率的影响,总结了在提高放大器输出功率的同时有效抑制SBS 效应的方法。自行搭建了全光纤掺铥光纤种子光源及放大器,高稳定性的全光纤掺铥激光种子光的中心波长为1941 nm,信噪比约为60 dB。当掺铥放大器的抽运功率达到2.15 W 时,激光的输出功率可以达到0.766 W。
Abstract
With the development of study on single-frequency fiber laser and amplifier, higher output power can be received. Because stimulated Brillouin scattering (SBS) effect has a great constrain on output power of single-frequency fiber laser and amplifier, so the study of infuence factor and suppression method of SBS is necessary. Based on the rate equations of thulium (Tm3 + ) ions and double-cladding fiber amplifier with SBS, a theoretical model of the single-frequency fiber amplifier is created, and the energy distribution and output power of the Tm3 +-doped fiber amplifiers are calculated. Then the effects of fiber length, pump power, Tm3 + doped concentration on output power and SBS effect of the single-frequency fiber amplifiers are discussed. Finally, it can be concluded that how to improve the output power of the fiber amplifiers and effectively suppress the SBS effect at the same time. A all-fiber Tm3 +-doped fiber amplifier is presented. The center wavelength of the Tm3 +-doped fiber laser is 1941 nm. The signal to noise ratio is 60 dB. When the pump power of the Tm3+-doped fiber amplifier is 2.15 W, the maximum output power is 0.766 W.

张美, 延凤平, 刘硕, 尹智. 高功率掺铥光纤放大器中受激布里渊散射效应研究[J]. 中国激光, 2015, 42(4): 0405009. Zhang Mei, Yan Fengping, Liu Shuo, Yin Zhi. Research of Stimulated Brillouin Scattering Effect in High-Power Tm3+-Doped Fiber Amplifiers[J]. Chinese Journal of Lasers, 2015, 42(4): 0405009.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!