The Raman non-gain and self-steepening effects in Raman fiber amplifiers |
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Authors: | Jing Huang Jianmin Lin Caiyu Lan Dongchen Wang |
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Institution: | Physics Department, South China University of Technology, Guangzhou 510640, China |
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Abstract: | In Raman fiber amplifiers, due to the strong pump power, the self-steepening effect and Raman non-gain term should be taken into account even for the pico-second pulse's transmission. A model including these effects is established based on the resonant and no-resonant terms of cubic susceptibility tensor (x(3)). These extra effects will result in the requirement of strict dispersion compensation, which means the second-, third- and fourth-order dispersion should be compensated exactly. Till 95% of the fourth-order dispersion is compensated, 80 fs pulse can keep its shape successfully after 2000 m transmission in Raman amplifiers. |
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Keywords: | Raman non-gain Self-steepening The fourth-order dispersion |
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