Cisco Prisma Optical Networks 1310 and 1550 nm Fixed Optical Attenuators Ficha De Dados

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Data Sheet 
Product Specifications 
Table 1. 
Optical Specifications 
Module Type
1
 
Dispersion @ 1550 nm
[ps/nm] 
Max. loss
2
 @1550 nm 
[dB] 
RDS
3
 [nm^-1] 
Max. PMD
4
 [ps] 
DCM 20 
-340 ± 2% 
1.9 
0.0015 - 0.0055 
0.54 
DCM 30 
-510 ± 2% 
2.4 
0.0015 - 0.0056 
0.66 
DCM 40 
-680 ± 2% 
2.8 
0.0015 - 0.0057 
0.76 
DCM 50 
-850 ± 2% 
3.3 
0.0015 - 0.0058 
0.85 
DCM 60 
-1020± 2% 
3.7 
0.0015 - 0.0059 
0.93 
DCM 70 
-1190 ± 2% 
4.2 
0.0015 - 0.0060 
1.01 
DCM 80 
-1360 ± 2% 
4.6 
0.0015 - 0.0061 
1.08 
 
Table 2. 
Mechanical Specifications 
Description 
Units 
Value 
Physical Dimensions: 
Depth 
in. 
cm 
10.0 
25.4 
Width 
in. 
cm 
20.5 
52.1 
Height 
in. 
cm 
1.70 (1RU) 
4.32 
Weight 
lbs. 
kg 
5.0 
2.3 
Notes: 
1.  Each DCM is designed to compensate for a specific amount of dispersion.  For example, 
the DCM 20 is designed to compensate for 20 kM of dispersion, and the DCM 30 is 
designed to compensate for 30 kM of dispersion. 
2.  Inclusive fiber loss, splice loss and one connector-connector interface loss. 
3.  RDS = Relative Dispersion Slope, dispersion slope divided by dispersion. 
4.  Average Polarization Mode Dispersion (PMD) measured using the interferometric method. 
 
 
 
 
 
This module is designed to operate up to 24 wavelengths. Applications beyond this will require a unique fiber design to 
compensate the dispersion over a broad number of wavelengths.  Please contact your Applications Engineer for this request. 
 
 
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