Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 32, Issue 22, Pages 1447-1450Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2020.3031919
Keywords
Laser mode locking; Optical solitons; Pump lasers; Nonlinear optics; Optical pulses; Laser excitation; Wavelength-switchable; bound solitons; mode-locked fiber lasers
Funding
- National Natural Science Foundation of China [61975192]
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We report on the experimental observation of wavelength-switchable bound solitons in a passively mode-locked erbium-doped fiber ring laser based on a tapered graded-index multimode fiber. Due to the multimode interference filtering effect, by adjusting the polarization controller while maintaining the pump power of 158 mW at 1480 nm, the center wavelength of the fiber laser output can be switched between 1565 nm and 1595 nm. At the same time, bound soliton pairs and bound soliton triplets can be both observed in these two wavelengths. Such a simple, compact all-fiber mode-locked laser with switchable wavelength has great potential for high capacity optical communication.
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