² DWDM system dispersion compensation and broadband low residual dispersion
² G.652 fiber C-band 100% slope compensation (standard value)
² Low insertion loss
² Low polarization mode dispersion
² Performance indicators by
² Telcordia GR-2854-CORE standard certification
² Reliability by Telcordia GR-1221-CORE standard certification
² These modules compensate for chromatic dispersion in fiber that causes the light pulses to spread and generate signal impairment. In analog systems, the impairments over long fiber distances are seen as poor second‐order distortions (CSO).
² By adding these dispersion compensation modules, the reach of broadcast and Dense Wavelength Division Multiplexing (DWDM) narrowcast systems can be significantly increased.
² In digital systems, the impairments of chromatic dispersion are seen as poor bit error rate.
² Using these dispersion compensation modules, the transmission distances in fiber can be increased significantly without regenerating the signals.
² In a DWDM network, significant costs can be saved by eliminating regeneration points.
| Parameters | VDCM-20 | VDCM-40 | VDCM-60 | VDCM-80 | VDCM-100 | VDCM-120 |
| Compensated Distance (km) | 20 | 40 | 60 | 80 | 100 | 120 |
| 1545nm dispersion (ps/nm) | -340+/-10 | -670+/-20 | -1000+/-30 | -1340+/-40 | -1680+/-50 | -2010+/-60 |
| 1545nm relative dispersion slope (nm-1) | 0.0036 +/- 10% | |||||
| Insertion Loss (dB) | ≤3.3 | ≤4.7 | ≤6.4 | ≤8.0 | ≤9.5 | ≤11.0 |
| Insertion Loss (typ) (dB) | 2.7 | 4 | 5.4 | 6.7 | 8 | 9.3 |
| Polarization mode dispersion (ps) | ≤0.6 | ≤0.7 | ≤0.8 | ≤0.9 | ≤1.0 | ≤1.1 |
| Polarization mode dispersion (typ) (ps) | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 |
| Polarization dependent loss (dB) | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 |
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