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可调谐多波长布里渊掺铒光纤激光器将光纤中的SBS非线性放大同掺铒光纤的线性放大相结合得到室温稳定的多波长输出,具有波长间隔一致、线宽窄、功率谱相对平坦等优点。设计了一种基于光纤布拉格(FBG)反射的线性可调谐多波长布里渊掺铒光纤激光器。该线性腔激光器的一端利用光纤布拉格光栅作为反射镜,有效抑制了腔内自激模的影响,增加激光器输出波长数。布里渊泵浦信号进入布里渊增益介质之前经过掺铒光纤放大器的两次放大,降低了布里渊增益的阈值。该多波长激光器实现了1 530～1 560 nm之间30 nm可调谐范围的输出。在布里渊泵浦信号功率2 mW,980 nm泵源抽运功率60 mW情况下,1 540～1 554 nm范围内,获得了波长间隔0.088 nm的16个波长的输出。
Tunable multiwavelength Brillouin erbium-doped fiber laser Combining SBS non-linear amplification in fiber with linear amplification in erbium-doped fiber yields a stable multi-wavelength output at room temperature with the advantages of consistent wavelength spacing, narrow linewidth and relatively flat power spectrum . A linear tunable multi-wavelength Brillouin erbium-doped fiber laser based on fiber Bragg grating (FBG) reflection was designed. One end of the linear cavity laser uses a fiber Bragg grating as a reflector, which effectively restrain the influence of the self-excited mode in the cavity and increase the output wavelength of the laser. The Brillouin gain is reduced twice by the twice-erbium-doped fiber amplifier before it enters the Brillouin gain medium. The multi-wavelength laser achieves a tunable output range of 30 nm between 1 530 and 1 560 nm. Under the conditions of Brillouin pump signal power of 2 mW and pumping power of 980 nm pump source of 60 mW, 16 wavelengths with the wavelength of 0.088 nm are obtained in the range of 1 540 ~ 1 554 nm.