Experimental investigations on spectrum width of square-wave pulses in passively mode-locked figure-8 fiber laser

Li Mei; Lixin Xu; Guoliang Chen; Chun Gu; Xianming Zhang; Biao Sun; Jian Lin; Anting Wang

doi:10.1117/12.2073262

24 October 2014 Experimental investigations on spectrum width of square-wave pulses in passively mode-locked figure-8 fiber laser

Li Mei, Lixin Xu, Guoliang Chen, Chun Gu, Xianming Zhang, Biao Sun, Jian Lin, Anting Wang

Author Affiliations +

Proceedings Volume 9270, Optoelectronic Devices and Integration V; 92700G (2014) https://doi.org/10.1117/12.2073262
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

We have proposed and demonstrated a nanosecond square-wave fiber laser working in the 1060nm band. The passively mode-locked fiber laser based on the nonlinear optical loop mirror has a peak power clamping effect which leads to the generation of nanosecond square-wave pulses. To investigate the spectrum width of the nanosecond square-wave pulse laser, we added couplers with different coupling ratio to the bidirectional ring of the figure-8 fiber laser and analyzed the laser output. The results show that a higher output coupling ratio leads to stronger peak power clamping effect, and the peak power of the square-wave pulse gets lower and the corresponding spectrum band width is narrower.

Citation Download Citation

Li Mei, Lixin Xu, Guoliang Chen, Chun Gu, Xianming Zhang, Biao Sun, Jian Lin, and Anting Wang "Experimental investigations on spectrum width of square-wave pulses in passively mode-locked figure-8 fiber laser", Proc. SPIE 9270, Optoelectronic Devices and Integration V, 92700G (24 October 2014); https://doi.org/10.1117/12.2073262

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