Author Affiliations
College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, Guangdong, Chinashow less
Fig. 1. Transmission schemes and OPC propagation symmetry analysis. (a) Schematic of the IDF-managed (top) and DCF-managed (bottom) links; (b) corresponding power varying with transmission distance in case of two-span transmission (N=1); (c) PADD
Fig. 2. Comparison of compensation performance of two transmission schemes for different transmission distance. Output pulse shapes of (a) two-span transmission, (b) six-span transmission, and (c) ten-span transmission; corresponding output spectra of (d) two-span transmission, (e) six-span transmission, and (f) ten-span transmission
Fig. 3. Comparison of compensation performance of two compensation schemes. Variation of ΔPaver with input energy for (a) two-span transmission, (b) six-span transmission, and (c) ten-span transmission; variation of relative peak intensity of ghost pulse with input energy for (d) two-span transmission, (e) six-span transmission, and (f) ten-span transmission
Fig. 4. Scheme for asymmetric power (energy) transmission [scheme is identical to DCF-managed link shown in Fig. 1(a) added with VGA and VOA]
Fig. 5. Relationship between compensation effect and E1/E2 for DCF scheme under six-span transmission. (a) Variation of ΔPaver with E1/E2; (b) variation of relative peak intensity of ghost pulse with E1/E2
Fig. 6. Comparison of output results of asymmetric energy transfer and symmetric energy transfer for DCF scheme. (a) Waveform comparison; (b) spectrum comparison
Fiber type | SSMF | IDF | DCF |
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Attenuation αdB /(dB·km-1) | 0.2 | 0.2 | 0.6 | Dispersion β2 /(ps2·km-1) | -20 | 20 | 160 | Nonlinearity γ /(W-1·km-1) | 1.3 | 1.3 | 3.9 |
|
Table 1. Fiber parameters set for simulations