The Impact of SRS Effect and Attenuation on Transfer Power in DWDM System
In order to analyze Stimulated Raman Scattering (SRS) effect separately, the methods of difference and quotient are proposed in this chapter, which ignored interference factors effectively. By introducing transfer difference and relative quotient measure, the power of dense channels’ transferring with the transmission distance was discussed. For illustration, the influences on the shortest wavelength channel were studied by using MATLAB simulation among different channel spacing, channel numbers, and input power. The results showed that input power became one of the most sensitive factors to the SRS effect when distance was extending and the limitation of quotient value of transferring power was a constant. The way of difference and quotient can solve the conflicts of variable interference from inherent properties of optical fiber, such as Attenuation, and thus the above analysis has important significance for the follow-up Nonlinear study of optical communications.
This work was financially supported by the Scientific Research Project of the Education Department of Shaanxi (2010JK832).
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