Study on DBR Er~(3+)-doped Fiber Laser of High Stability
LI Jun, WANG Tianshu, GUO Yubin, BAI Bing, LI Xiaobin, HU Guijun(Dept.of Commun. Eng., Jilin University, Changchun 130012, China)
One DBR Er3+doped fiber laser of high output power and high wavelength stability was developed. Its gain medium was 2.75m long Er3+doped fiber of high erbium concentration. When it was pumped by 980nm laserdiode, the output spectral bandwidth was measured as 0.2nm by 3dB and 0.4nm by 25dB at 1552.2nm. The max. output power was measured as 25mW. Its power stability was ±0.01dB, side mode suppression ratio was 60dB, and the stability of output wavelength was 0.01dB(Confined by the precision of OPM). The laser had a threshold of 8.6mW and a slope efficiency of 21.7%.
【CateGory Index】： TN248