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Dispersion Compensation Modules (DCM)

 

Description

DCM

Dispersion Compensation Module (DCM) is designed to fix the form of optical signals that are deformed by chromatic dispersion. The main constituent of these devices is DCF (Dispersion Compensation Fiber) with a negative chromatic dispersion value within the wavelength range between 1525 nm and 1565 nm.

 

The chromatic dispersion is one of the factors limiting the transmission distance, and it is therefore necessary to compensate dispersion in the long-haul data transmission. The standard fiber has a chromatic dispersion value of about 17 ps/nm per kilometer.

 

DCMs are usually installed in a line of 10GBit/s or higher.

 

Features:

  • wavelength range of 1525 – 1565 nm;
  • equivalent optical fiber length of up to 120 km;
  • low values of insertion losses;
  • 1U 19-inch rack-mountable body.

 

Specification

Model

DCM-C10

DCM-C20

DCM-C40

DCM-C60

DCM-C80

DCM-C100

DCM-C120

Wavelength, nm

1525 - 1565     

Equivalent length, km

10

20

40

60

80

100

120

Chromatic dispersion, ps/ (nm*km)

- 158

- 319

 - 640

- 960

- 1280

- 1611

- 1937

Insertion loss, dB 

< 2,1

 < 2,7

 < 4,1

< 5,5 

< 6,9

< 8,4

< 9,8

Return loss, dB 

< 45     

Maximum input optical power, mW

300

Optical connector

FC, SC, LC

PMD, ps/ (nm*km)

< 0,3

< 0,4

< 0,5

< 0,6

< 0,7

< 0,8

< 0,8

Working temperature, °С

-5 … +70

Size, mm

473 х 279 х 44

Checkout: Dispersion Compensation Modules (DCM)