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Numerical analysis and experimental characterization of broadly tunable erbium doped fiber ring laser

QI WANG1,* , YONG ZHAO1, YUYAN ZHANG1, YA’NAN ZHANG1, BO HAN1

Affiliation

  1. Northeastern University, College of Information Science and Engineering, P. O. Box 321, Shenyang, Liaoning, 110819, China

Abstract

The output power characteristics of a wideband tunable erbium-doped fiber ring laser (EDFRL) are studied through numerical analysis and experiments. A numerical model based on an iterative solution of propagation rate equations is established to analyze the influence of total intracavity loss, erbium-doped fiber length and output couple ratio on the output power characteristics of EDFRL. The numerical results are in good agreement with the experimentally obtained data. Both the numerical analysis and experimental results show that minimization of the intra-cavity loss as well as optimization of the erbium-doped fiber length and the selection of a appropriate output coupling ratio are the same important for achieving high output power, well power stability, output spectrum flatness and output bandwidth. A 147 nm tunable range which covering the whole S+C+L band is achieved in the experiments. This fiber ring laser has a flat, stable output spectrum and better than 62 dB signal-to-ASE-noise ratio..

Keywords

Fiber optics, Numerical modeling, Lasers, Erbium-doped fiber, Tunable lasers.

Submitted at: March 24, 2011
Accepted at: May 25, 2011

Citation

QI WANG, YONG ZHAO, YUYAN ZHANG, YA’NAN ZHANG, BO HAN, Numerical analysis and experimental characterization of broadly tunable erbium doped fiber ring laser, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 5, pp. 471-476 (2011)