【摘要】 提出了一种复合腔结构的稳定单纵模(SLM)掺铒光纤激光器,其复合腔结构由主环形有源腔和两个次级无源腔组成。在光纤环形镜中嵌入未抽运的掺铒光纤作为可饱和吸收体以抑制多纵模,用光纤环谐振腔作为滤波器抑制拍频噪声,用光纤光栅作为波长选择器件,最终得到了单纵模输出并消除了拍频噪声。在整个波长调节范围内边模抑制比大于50dB,当泵浦功率为80mW时,掺铒光纤激光器输出功率为20.51mW,激光器的输出很稳定,在25min的观察时间内,输出功率的变化小于0.02%,实现了稳定的激光功率输出。更多还原

【Abstract】 A stable single-longitudinal-mode(SLM) erbium-doped fiber laser (EDFL) with complex cavity is proposed, in which, an unpumped Er-doped fiber serves as the saturable absorber to suppress the multi-longitudinal-mode, and a fiber ring resonator is used as the filter to suppress the beating noise. Using a fiber Bragg grating (FBG) as thr wavelength-selectiving component, the single mode output without beating noise is obtained experimentally. The main wavelength is 1550.24nm and the side-mode suppression ration (SMSR) is beyond 50dB. The output power of EDFL is 20.51mW when the pumping power is 80mW, the laser output is stable, and the output power fluctuation is less than 0.02% in 25min. EDFL with stabilized single-longitudinal mode is achieved.更多还原