DCM Dispersion Compensation Device For WDM Transmission System

 

Product Description

Fiberroad Technology Co. 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.

 

Applications

• G.652 standard single-mode fiber-optic long-haul and metro communications system
• DWDM transmission system
• SDH transmission systems
• CATV cable system
• Dispersion adjustment

 

Product Features

• 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

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

 

Optical performance parameters

Parameters	DCM-20	DCM-40	DCM-60	DCM-80	DCM-100	DCM-120
1545nm dispersion (ps/nm)	-340+/-10	-670+/-20	-1000+/-30	-1340+/-40	-1680+/-50	-2010+/-60
1545nm relativedispersion 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

1) Application of the maximum insertion loss of the band (1525nm-1565nm) inside.

(2) for the mean difference clustering PMD delay in the band with Jones matrix method of measurement.

(3) Other compensation lengths are available upon request.

 

Nonlinear characteristics

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

 

Environmental Characteristics

Item	MIN	MAX
Operating temperature range	-5℃	70℃
Storage temperature range	-40℃	85℃
Relative humidity	<85%
Environmental / reliability testing	Comply with Telcordia GR-2854 and GR-1221 standard

 

If any confusions, please find Ms.mabel