| Feng You-ceng,Xia Ge.Mechanisms of self-similar pulses generation in a normal dispersion-decreasing fiber[J].Optoelectronics Letters,2012,8(1):52-55 |
| Mechanisms of self-similar pulses generation in a normal dispersion-decreasing fiber |
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| Abstract: |
| Based on the principle of virtual equivalent gain, the evolution of self-similar pulses in a normal dispersion-decreasing
fiber is investigated. The occurrence of wave breaking during the process under highly nonlinear conditions and the effect
of its revealed four-wave mixing on the process are also analyzed. The results indicate that the pulse spectrum broadening
in the initial stage is dominated by self-phase modulation while by four-wave mixing in the later stage. The more intense
nonlinearity is, the faster the pulse evolution converges to the self-similarity synchronously in both the time domain and
the spectrum domain. |
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| This work has been supported by the School Key Fund of South-central University for Nationalities (No.yzz05008), and the Hubei Provincial |
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