Experimental study of SBS suppression with phase-modulation in all-fiber amplifier

Wenbo Du; Pu Zhou; Yanxing Ma; Xiaolin Wang; Jiajan Zhu; Xiaolin Dong; Xiaojun Xu; Bohong Shu

doi:10.1117/12.899872

19 August 2011 Experimental study of SBS suppression with phase-modulation in all-fiber amplifier

Wenbo Du, Pu Zhou, Yanxing Ma, Xiaolin Wang, Jiajan Zhu, Xiaolin Dong, Xiaojun Xu, Bohong Shu

Proceedings Volume 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging; 81921C (2011) https://doi.org/10.1117/12.899872
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

A cascaded all-fiber amplifier was set up to investigate stimulated Brillouin scattering (SBS) suppression with phase-modulation (PM) in our experiment. With a modulation index of π / 2 , the SBS threshold power of the modulated amplifier can be enhanced with a factor of 3.5 compared with the unmodulated single frequency amplifier. In high power level, we demonstrate a 275 W all-fiber amplifier, where the SBS threshold enhancement factor is larger than 2.2 compared with the unmodulated case with SBS threshold power of 126 W. Further enhancing the output power is limited by available gain fiber and pump powers in this case.

Citation Download Citation

Wenbo Du, Pu Zhou, Yanxing Ma, Xiaolin Wang, Jiajan Zhu, Xiaolin Dong, Xiaojun Xu, and Bohong Shu "Experimental study of SBS suppression with phase-modulation in all-fiber amplifier", Proc. SPIE 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, 81921C (19 August 2011); https://doi.org/10.1117/12.899872

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