DCM Dispersion Compensation Device
DCM-***
The DCM offer a high dispersion compensation level and a very low insertion loss penalty. They provide negative dispersion compensation over the full C-Band with possible distance extensions of up to 120 kilometers.
Quantity
DCM Dispersion Compensation Device

Optical compensation function with slope dispersion compensation for standard single-mode fiber can DCM (G.652) were dispersion and dispersion slope compensation broad band in the C-band, allowing the system to optimize residual dispersion. In the dispersion compensation value of 1545nm wavelength dispersion can reach -2070ps/nm.
               
The DCM offer a high dispersion compensation level and a very low insertion loss penalty. They provide negative dispersion compensation over the full C-Band with possible distance extensions of up to 120 kilometers.

dispersion compensation
  • DWDM system dispersion compensation and broadband low residual dispersion
  • G.652 fiber C-band 100% slope compensation (standard value)
  • Low insertion loss
  • Low polarization mode dispersion
  • Performance indicators by Telcordia GR-2854-CORE standard certification
  • Reliability by Telcordia GR-1221-CORE standard certification

Dispersion Compensation and Dispersion Slope Compensation
Dispersion Compensation and Dispersion Slope Compensation
Obtained at a specific wavelength dispersion compensation, should satisfy the following relationship:
                                      DTF × LTF + DDCF × LDCF = 0
DTF: transmission fiber dispersion;
LTF: length of the transmission fiber;
DDCF: dispersion of the dispersion compensating optical fiber;
LDCF: dispersion compensation fiber length;

Dispersion slope compensation in the band, should satisfy the following relationship:
                                     STF × LTF + SDCF × LDCF = 0
STF: dispersion of the transmission fiber;
SDCF: dispersion of the dispersion compensating optical fiber
According to the above two relationships obtained dispersion compensation and dispersion slope compensation, should satisfy the following relation:
                                     RDSDCF = SDCF / DDCF = STF / DTF
Assuming standard single mode fiber at 1545nm wavelength dispersion of 16.7ps / nm / km, a dispersion slope of 0.060 ps / nm2 / km, RDS about 0.0036nm﹣1.



Nonlinear Characteristics
ParameterMin.Max.
BrillouinScatteringThreshold (dBm)6-
Non-linearCoefficient (n2/Aeff) (W-1-1.4*10-9
EffectiveArea (Aeff)@1550nm (um2)20-
MaximumInputPower (dBm)23
OperatingTemperatureRange-5℃70℃
StorageTemperatureRange-40℃85℃
RelativeHumidity<85%
Environmental / ReliabilityTestingComply with Telcordia GR-2854 and GR-1221 standard
Size(mm)482.6(W)x350(D)x43.6(H)



Application Example
Compensated Distance



Ordering Information
ParameterDCM-20DCM-40DCM-60DCM-80DCM-100DCM-120
Compensated Distance (km) 20406080100120
1545nmDispersion (ps/nm)-340+/-10-670+/-20-1000+/-30-1340+/-40-1680+/-50-2010+/-60
1545nmRelativeDispersionSlope (nm-1)0.0036 +/- 10%
Insertion Loss (dB) ≤3.3≤4.7≤6.4≤8.0≤9.5≤11.0
Insertion Loss (typ) (dB)2.74.05.46.78.09.3
PolarizationModeDispersion(ps)≤0.6≤0.7≤0.8≤0.9≤1.0≤1.1
PolarizationModeDispersion (typ) (ps)0.20.30.40.50.60.7
PolarizationDependentLoss (dB)≤0.1≤0.1≤0.1≤0.1≤0.1≤0.1