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Appl. Sci. 2017, 7(12), 1290; https://doi.org/10.3390/app7121290

Stabilize and Flatten Multi-Wavelength Erbium-Doped Fiber Laser through Accurate Hybrid Dual-Ring-Configuration Control

1
College of Electric Engineering, Heilongjiang University, Harbin 150080, China
2
Key Lab of Electronics Engineering, College of Heilongjiang Province, Heilongjiang University, Harbin 150080, China
*
Author to whom correspondence should be addressed.
Received: 20 October 2017 / Revised: 28 November 2017 / Accepted: 8 December 2017 / Published: 12 December 2017
(This article belongs to the Special Issue Erbium-doped Fiber Lasers)
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Abstract

In order to enhance the practicality of multi-wavelength erbium-doped fiber lasers (MWEDFLs), a novel hybrid dual-ring configuration is proposed in this article, which can flatten the outputs through an optical nonlinear-polarization-rotation-based ring cavity and stabilize the shifts of power and central wavelength of oscillations through an electrical fuzzy-control-based feedback. The experiment results show that, our scheme achieves more than 10 stable oscillations with the dramatic improvements in flatness and working stability. Under dual-ring configuration, the output intensity of MWEDFL reaches ~−7.5 dBm with the flatness of ±0.42 dB. And the in-stabilities in terms of power and central wavelength are respectively constrained ±0.182 dBm and ±0.029 nm within 10-h continuous operation. View Full-Text
Keywords: multi-wavelength erbium-doped fiber laser; nonlinear polarization rotation; hybrid control; working stability; flatness multi-wavelength erbium-doped fiber laser; nonlinear polarization rotation; hybrid control; working stability; flatness
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Zhang, X.; Li, T.; Yang, J. Stabilize and Flatten Multi-Wavelength Erbium-Doped Fiber Laser through Accurate Hybrid Dual-Ring-Configuration Control. Appl. Sci. 2017, 7, 1290.

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