We demonstrate a 202 W all polarization-maintaining(PM)single-frequency fiber amplifier operating at the C band.Simulations show that the length of the output fiber pigtail following the gain fiber critically has a gr...We demonstrate a 202 W all polarization-maintaining(PM)single-frequency fiber amplifier operating at the C band.Simulations show that the length of the output fiber pigtail following the gain fiber critically has a great impact on stimulated Brillouin scattering(SBS),posing a major obstacle for high-power single-frequency amplification.Optimizing the length to suppress the backward SBS by~10 d B,we experimentally achieved a maximum output power of 202 W,yielding an optical-to-optical efficiency of 42%.The signal-to-noise ratio(SNR)of signal light,relative to amplified spontaneous emission(ASE)in Er^(3+)and Yb^(3+)bands,was measured to be 23 and 32 dB,respectively,and it can be further improved by ASE suppression and filtering techniques during amplification.To the best of our knowledge,this is the all-PM single-frequency fiber amplifier with the highest power reported in the C band.展开更多
Erbium ytterbium co-doped super-fluorescent fiber source （EYD-SFS） has been simulated by a theoret- ical model based on rate equations and power transfer equations. The output performances of four basic structures o...Erbium ytterbium co-doped super-fluorescent fiber source （EYD-SFS） has been simulated by a theoret- ical model based on rate equations and power transfer equations. The output performances of four basic structures of EYD-SFS have been expressed, and it indicated that the DPF structure is a preferable structure. The dependence of output power, mean wavelength and bandwidth stability on the pump fiber length and the concentration of Er3＋ and Yb3＋ have also been studied. The results indicated with a proper doping concentration of Er3＋ and Yb3＋ of 6.0 × 10^26 ions/m3 and 1.0 × 10^27 ions/m3, the optimal gain fiber length is 3.6 cm. In this condition, good performances of DPF structure of EYD-SFS have been achieved.展开更多
基金supported by the National Natural Science Foundation of China(Nos.U22A6003 and 62175122)。
文摘We demonstrate a 202 W all polarization-maintaining(PM)single-frequency fiber amplifier operating at the C band.Simulations show that the length of the output fiber pigtail following the gain fiber critically has a great impact on stimulated Brillouin scattering(SBS),posing a major obstacle for high-power single-frequency amplification.Optimizing the length to suppress the backward SBS by~10 d B,we experimentally achieved a maximum output power of 202 W,yielding an optical-to-optical efficiency of 42%.The signal-to-noise ratio(SNR)of signal light,relative to amplified spontaneous emission(ASE)in Er^(3+)and Yb^(3+)bands,was measured to be 23 and 32 dB,respectively,and it can be further improved by ASE suppression and filtering techniques during amplification.To the best of our knowledge,this is the all-PM single-frequency fiber amplifier with the highest power reported in the C band.
文摘Erbium ytterbium co-doped super-fluorescent fiber source （EYD-SFS） has been simulated by a theoret- ical model based on rate equations and power transfer equations. The output performances of four basic structures of EYD-SFS have been expressed, and it indicated that the DPF structure is a preferable structure. The dependence of output power, mean wavelength and bandwidth stability on the pump fiber length and the concentration of Er3＋ and Yb3＋ have also been studied. The results indicated with a proper doping concentration of Er3＋ and Yb3＋ of 6.0 × 10^26 ions/m3 and 1.0 × 10^27 ions/m3, the optimal gain fiber length is 3.6 cm. In this condition, good performances of DPF structure of EYD-SFS have been achieved.
