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Digital Processing by Le Nguyen Binh

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2.6.3    Effects of Mode Hopping

Up to now we have assumed that the source center emission wavelength was unaffected by the modulation. In fact, when a short current pulse is applied to a semiconductor laser, its center emission wavelength may hop from one mode to a longer neighboring wavelength. In the case where a multi-longitudinal mode laser is used, this hopping effect is negligible; however, it is very significant for a single longitudinal laser.

2.6.4    SPM and Intra-Channel Nonlinear Effects

Under considerations only the SPM of all the nonlinear effects on the optical signals transmitting through dispersive transmission link we can drop the cross coupling terms but ΔΩ, the nonlinear effect is thus also contributed the additional intra-channel ...

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