NDLI: Topological Insulator-Assisted Dual-Wavelength Fiber Laser Delivering Versatile Pulse Patterns

Content Provider	IEEE Xplore Digital Library
Author	Bo Guo Yong Yao Jun-Jun Xiao Rui-Lai Wang Jian-Yu Zhang
Copyright Year	1995
Abstract	We report on the generation of dual-wavelength mode-locked pulses in an erbium-doped fiber laser incorporating a topological insulator (TI): Bi₂Se₃/Polyvinyl Alcohol (PVA) film which could operate as both an excellent saturable absorber (SA) for mode-locking and a high-nonlinear medium for mitigating the mode competition of erbium-doped fiber and stabilizing the dual-wavelength oscillation. The TI: Bi₂Se₃/PVA film is prepared through a liquid-phase exfoliation/spin-coating method. Its saturating intensity and modulation depth are measured to be about 31.5 MW/cm² and 3.4%, respectively. Taking advantage of the high nonlinearity and saturable absorption of the TI: Bi₂Se₃, three dual-wavelength pulse patterns, namely bright pulse, bright-dark soliton pair, and hybrid step-like and dark pulse, could be achieved under different lengths of single mode fiber by properly adjusting the pump power and the polarization state. For the bright pulse operation, we obtain its fundamental repetition rate of 9.75 MHz. For the bright-dark soliton pair operation, we find that it contains two distinct parts in the whole optical spectrum: one is at shorter wavelength corresponds to bright soliton and the other one is at longer wavelength corresponds to dual-wavelength dark soliton. In addition, we also achieved the harmonic mode-locking (HML) of the bright-dark soliton pair. The highest obtained repetition rate is about 433.8 MHz, which corresponds to the 280th harmonic of the fundamental repetition rate. For the hybrid step-like and dark pulse operation, we achieve its fundamental repetition rate of 8.805 MHz. Our findings suggest that TI: Bi₂Se₃ can operate as both an excellent SA for short pulse generation and a promising highly nonlinear photonic material for the related nonlinear optics applications.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	1
Ending Page	8
Page Count	8
File Size	4803158
File Format	PDF
ISSN	1077260X
Volume Number	22
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Solitons Optical fiber polarization Laser mode locking Erbium-doped fiber lasers Optical fiber dispersion Cavity resonators Mode-locked lasers Nonlinear optics fibers nonlinear optical materials Fibers mode-locked lasers nonlinear optics
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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