Acta Photonica Sinica, Volume. 41, Issue 5, 536(2012)
Measurement Method of Fiber Nonlinear Coefficient Based on Four Wave Mixing
Pump depletion was not taken into account in the fourwavemixingbased measurement technique for fiber nonlinear coefficient, which made the results inaccurate. To solve this, the elliptical equation with pump depletion and fiber loss was derived based on the theory of degenerate fourwave mixing. The nonlinear coefficient of the tested fiber could be obtained by setting the parameters in numerical calculation and utilizing simple mathematical method. The necessity of considering pump depletion and fiber loss was analyzed. The numerical results were consistent with the Optisystem simulation data. The improved method proposed in the can be applied to the small signal case, but also to the process of parametric saturation. This technique provided an important parameter for further designing the fiberbased 2R regenerators.
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LI Zhi, WU Baojian, WEN Feng, AN Junge. Measurement Method of Fiber Nonlinear Coefficient Based on Four Wave Mixing[J]. Acta Photonica Sinica, 2012, 41(5): 536
Received: Dec. 5, 2011
Accepted: --
Published Online: May. 18, 2012
The Author Email: Zhi LI (lizhi19890205@126.com)