Observation of parametric noise amplification owing to modulation instability in anomalous dispersion regime

Fiber Nonlinearities and Their Impact on Transmission Systems

“…In the previously mentioned 20-Gb/s experiments [125], inspection of the bit patterns show similar behavior, i.e., in normal-dispersion fiber edges of bits spill over into adjacent "zeros" due to SPM, whereas in the anomalousdispersion case the edges of bits become steeper. 15 20 Pave (dBm) -.…”

“…Aside from the amplifier ASE gain shape in the experimental figure, which was not included in the simulations, the agreement is quite good. Quasi-cw measurements of MI noise amplification were also per- formed in 20-Gb/s transmission experiments [125]. The noise amplification was measured in the middle of a long string of NRZ "ones."…”

Power modulation due to modulation instability effects in WDM optical communication systems

“…This filter performance is highly sensitive to dimensions because g are too small. 1,2,5,6 The filter is then modified by replacing gaps 1, 2, 5, 6 with edge-coupled-gaps as shown in Figure 2. The layout of the filter after modification is given in Figure 3.…”

PMD tolerant nonlinear compensation using in-line phase conjugation

“…Deterministic intra-channel impairments such as chromatic dispersion and self-phase modulation can be compensated completely using modern DSP. However, the compensation of nonlinear distortions which result from interactions with stochastic effects, such as polarisation mode dispersion (PMD) [10] and noise [11], still presents significant challenges. For long haul, dispersion unmanaged, high spectral efficiency systems the stochastic nature of PMD prevents the limit imposed by parametric noise amplification [12] being reached [13].…”