Lasers, Fiber Optics, and Communications

Passively harmonic mode-locked pulses in thulium-doped fiber laser based on nonlinear polarization rotation

[+] Author Affiliations
Qingsong Jia, Wanzhuo Ma, Peng Zhang, Yan Zhang

Changchun University of Science and Technology, National and Local Joint Engineering Research Center of Space Optoelectronics Technology, Science & Technology mansion, 7186 Weixing Road, Changchun, Jilin 130022, China

Changchun University of Science and Technology, College of Opto-Electronic Engineering, Science & Technology mansion, 7186 Weixing Road, Changchun, Jilin 130022, China

Tianshu Wang, Peng Liu

Changchun University of Science and Technology, National and Local Joint Engineering Research Center of Space Optoelectronics Technology, Science & Technology mansion, 7186 Weixing Road, Changchun, Jilin 130022, China

Changchun University of Science and Technology, College of Science, Science & Technology mansion, 7186 Weixing Road, Changchun, Jilin 130022, China

Baoxue Bo

Changchun University of Science and Technology, College of Opto-Electronic Engineering, Science & Technology mansion, 7186 Weixing Road, Changchun, Jilin 130022, China

Opt. Eng. 55(10), 106121 (Oct 25, 2016). doi:10.1117/1.OE.55.10.106121
History: Received June 21, 2016; Accepted September 30, 2016
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Abstract.  A simple approach to generate passively harmonic mode-locked pulse trains in thulium-doped fiber laser based on nonlinear polarization rotation is proposed and demonstrated. Three different ways of mode-locked techniques have been employed in our structure to generate passively high-order harmonic mode-locked pulse trains; 128th-order passively harmonic mode-locked pulse train is achieved in the experiment and the repetition rate is 406.8 MHz. With the increase of the pump power, multiwavelength output can be tuned. A segment of dispersion compensation fiber is used to compensate the dispersion in the cavity; thus, the single pulse width is compressed from 617 to 48 ps.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Qingsong Jia ; Tianshu Wang ; Wanzhuo Ma ; Peng Liu ; Peng Zhang, et al.
"Passively harmonic mode-locked pulses in thulium-doped fiber laser based on nonlinear polarization rotation", Opt. Eng. 55(10), 106121 (Oct 25, 2016). ; http://dx.doi.org/10.1117/1.OE.55.10.106121


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