Temporal characteristics of output pulses in Brillouin fiber-optical ring laser

Yue-lan Lü; Xue-qing Chong; Li-Jun He

doi:10.1117/12.725686

5 March 2007 Temporal characteristics of output pulses in Brillouin fiber-optical ring laser

Yue-lan Lü, Xue-qing Chong, Li-Jun He

Proceedings Volume 6595, Fundamental Problems of Optoelectronics and Microelectronics III; 659506 (2007) https://doi.org/10.1117/12.725686
Event: Fundamental Problems of Optoelectronics and Microelectronics III, 2006, Harbin, China

Abstract

The influence of pump energy on the dynamics of Brillouin fiber-optical ring laser by the CW (continuous wave) DFB fiber laser was studied experimentally and theoretically. Using a 1Km-length single model 10 μm-diameter fiber in our experimental regime, half-periodic, serial identical Stokes pulses were found in the experiments when pump energy was low (less than 1.5 P_th ); then they became quarter-periodic or even smaller periodic with further increase of pump energy; until the periodic disappeared as pump power is great enough (more than 4P_th ), the output of Brillouin fiber-optical ring laser is tend to give continuous wave. At mean time, the duration of Stoke pulses became narrow gradually, and the peak power of Stoke pulses increased gradually with the increase of pump energy. Based on coupled wave equations of SBS process, using a seed of loons, theoretical simulation of temporal characteristics of pulses by SBS process in single model fiber has been given numerically and computationally. By computer modulation of dynamics of Brillouin fiber-optical ring laser by the CW (continuous wave) DFB fiber laser, the characteristic of periodic, pulse duration and peak power of Stoke were analyzed. Using both pump exhausts effect and multilevel SBS nonlinear process, we tried to explain some experimental phenomena.

Citation Download Citation

Yue-lan Lü, Xue-qing Chong, and Li-Jun He "Temporal characteristics of output pulses in Brillouin fiber-optical ring laser", Proc. SPIE 6595, Fundamental Problems of Optoelectronics and Microelectronics III, 659506 (5 March 2007); https://doi.org/10.1117/12.725686

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