摘要
提出并验证了一种基于可调有源双耦合器环级联复合腔(Active dual-coupler ring based compound-cavity,ADCR-CC)滤波器的2μm波段单纵模(Single-longitudinal-mode,SLM)铥钬共掺光纤激光器。将具有可调滤波带宽和透射率的ADCR-CC滤波器与光纤布拉格光栅(Fiber Bragg grating,FBG)结合,实现了SLM激光输出。当主腔和复合腔的泵浦功率分别为1.8 W和1.1 W时,测得的激光器输出波长为2048.510 nm,光信噪比高达83.08 dB,90 min内的最大光谱中心波长和光谱峰值功率波动分别为0.006 nm和0.19 dB,激光器输出功率为50.03 mW。使用等强度悬臂梁对FBG引入应变调节,SLM激光可在1.45 nm范围内实现波长的可调谐输出。
A 2-μm-band single-longitudinal-mode(SLM)thulium-holmium co-doped fiber laser enabled by a tunable active dual-coupler ring based compound-cavity(ADCR-CC)filter is proposed and demonstrated.The ADCRCC filter with adjustable filtering bandwidth(full-width at half-maximum,FWHM)and transmittance is combined with a fiber Bragg grating(FBG)to realize SLM laser output.When the pump powers of the main cavity and the compound-cavity are 1.8 W and 1.1 W,respectively,the wavelength of the measured laser output is 2048.510 nm,the optical signal-to-noise ratio is as high as 83.08 dB,and the maximal spectral center wavelength and peak spectral power fluctuations within 90 min are 0.006 nm and 0.19 dB,respectively,with the laser output power of 50.03 mW.By adjusting the equal strength cantilever beam to change the strain acting on the FBG,the SLM laser can achieve a wavelength-tunable output in the range of 1.45 nm.
作者
郭文雅
孙威威
吴胜保
冯亭
延凤平
GUO Wenya;SUN Weiwei;WU Shengbao;FENG Ting;YAN Fengping(Photonics Information Innovation Center,College of Physics Science&Technology,Hebei University,Baoding 071002,China;School of Control Engineering,Northeastern University at Qinhuangdao,Qinhuangdao 066004,China;Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology,Qinhuangdao 066004,China;School of Electronic and Information Engineering,Beijing Jiaotong University,Beijing 100044,China)
出处
《发光学报》
北大核心
2025年第2期334-342,共9页
Chinese Journal of Luminescence
基金
河北省自然科学基金杰出青年科学基金(F2023201024)
国家自然科学基金重点项目(62335001)。
关键词
有源复合腔滤波器
铥钬共掺光纤
单纵模
光纤激光器
active compound-cavity filter
thulium holmium co-doped fiber
single-longitudinal-mode
fiber laser
