DCM Dispersion Compensation Modules card
Dispersion compensation in long haul WDM networks

The Dispersion Compensation modules are building blocks of the HT6000 Optical Transport System and serve at optical communication nodes to correct the pulse spread phenomenon known as Chromatic Dispersion that reduces the maximal transmission distance of data in optical fibers.
HTF 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 DCMs 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 80 kilometers.

Data center
5G Network
Long Haul Network
Fiber optical network

Parameters MIN MAX
Brillouin scattering threshold (dBm) 6 -
Non-linear coefficient (n2/Aeff)  (W-1) - 1.4*10-9
Effective area (Aeff)@1550nm (um2) 20 -
Maximum input power  (dBm)   23
Dimension (mm) 191 (W) x 253 (D) x 42 (H)
  Environment Operating Temperature (℃) -10℃~+60℃
Storage Temperature (℃) -40℃~+85℃
Relative humidity 5%~95% Non-condensing

Ordering Information
Parameters DCM-20 DCM-40 DCM-60 DCM-80 DCM-100 DCM-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 4.0 5.4 6.7 8.0 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

HT6000 Includes the Following Cards
NMS management card 100G QSFP28 to CFP transponder 2xQSFP28 to CFP2 200G Muxponder
100G Muxponder:QSFP28  ↔4xSFP28 40G&100G OEO: 6*QSFP28 SFP28  25G Quad transponder
SFP+ Multi-Rate Quad transponder Redundant Multi-Rate Dual transponder EDFA Optical Amplifiers
Bidi EDFA Optical Amplifiers 16ch DWDM MUX/DEMUX  40ch DWDM MUX/DEMUX(AAWG)
OLP  Optical Line Protector  DWDM Passive Optical Add/Drop Multiplexers /

HTF DWDM Transmission Solution
DWDM peer-to-peer case
DWDM chain network case
DWDM+OLP optical line protection Case
DWDM Ring network case
DWDM single fiber bidirectional networking case
DWDM ultra long distance solution

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