Cisco ONS 15454 Tunable Dispersion Compensation Unit
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Product Overview and Applications
Tunability in DWDM has been a key requirement for the technology’s maturity over the years from the introduction of tunable lasers, broadband receivers, and variable gain amplifiers. The Cisco® ONS 15454 MSTP now extends DWDM tunability to the dispersion compensator with its Tunable Dispersion Compensation Unit (see Figure 1). The Cisco ONS 15454 Tunable Dispersion Compensation line card uses fiber as the underlying technology to achieve tunability, which allows it to be unlocked from a specific 100/50 GHz grid like fiber bigrating and etalon technologies require. This helps service providers avoid future modifications to their DWDM networks to accommodate new wavelength modulation schemes that don’t fit into fiber bigrating or etalon spectral widths.
Manageability
Previous generations of dispersion compensators were passive units that sat outside of the chassis, making it very hard to know which unit type existed at each point in the network. With the Tunable Dispersion Compensation Unit as a plug-in module for the Cisco ONS 15454 chassis, operators will know exactly how much dispersion compensation exists throughout the entire network from a single remote location (see Figure 2).
Network Turn-Up
The Cisco ONS 15454 Tunable Dispersion Compensation Unit allows service providers to reduce their operational costs by providing flexible points in the network to cope with design uncertainties. As service providers may or may not know exact fiber data, the Cisco ONS 15454 Tunable Dispersion Compensation Unit helps ensure that the dispersion map can be adjusted without major modifications throughout the network (see Figure 2).
Features and Benefits
The Cisco ONS 15454 Tunable Dispersion Compensation Unit provides the following customer benefits:
● Automatic provisioning from the Cisco Transport Planner
● Remote monitoring and alarm correlation
● Network auditing: Provides the ability to validate dispersion maps remotely
● Fewer spare units: A single T-DCU replaces 10 fixed units
● Broadband compensation wavelength number- and speed-independent
Product Specifications
Tables 1 through 3 provide optical and mechanical specifications for the Cisco ONS 15454 Tunable Dispersion Compensation Unit. Table 4 provides regulatory compliance information, Table 5 lists system requirements, and Table 6 gives card specifications.
Table 1. Cisco ONS 15454 Tunable Dispersion Compensation Optical Specifications
| Optical Specification |
Coarse Unit (15454-TDC-FC=) |
Fine Unit (15454-TDC-FC=) |
| Wavelength Range |
1529 nm – 1562.5 nm |
1529 nm – 1562.5 nm |
| Optical Return Loss |
45 dB |
45 dB |
| Polarization Dependent Loss |
0.3 dB |
0.3 dB |
| Maximum Insertion Loss |
12.5 dB |
9.5 dB |
| Chromatic Dispersion Range |
–110 ps/nm thru –1650 ps/nm |
–45 ps/nm thru –675 ps/nm |
| Chromatic Dispersion Steps |
–110 ps/nm |
–45 ps/nm |
| Maximum Fiber Length |
10.58 km |
4.41 km |
| Maximum Polarization Mode Dispersion |
0.85 ps |
0.63 ps |
| Tuning Settling Time |
5 ms |
5 ms |
Table 2. Coarse Tunable Dispersion Compensation Unit Permutation Table
| Coarse Unit |
Chromatic Dispersion (ps/nm) |
Maximum Insertion Loss (dB) |
Maximum PMD (ps) |
Maximum Fiber Length (km) |
| 0 |
2.4 |
0.10 |
0.03 |
|
| –110 |
3.6 |
0.16 |
0.73 |
|
| –220 |
4.0 |
0.19 |
1.44 |
|
| –330 |
5.2 |
0.23 |
2.15 |
|
| –440 |
4.7 |
0.23 |
2.83 |
|
| –550 |
5.9 |
0.26 |
3.54 |
|
| –660 |
6.2 |
0.28 |
4.25 |
|
| –770 |
7.4 |
0.31 |
4.96 |
|
| –880 |
6.1 |
0.26 |
5.65 |
|
| –990 |
7.3 |
0.29 |
6.36 |
|
| –1100 |
7.7 |
0.31 |
7.07 |
|
| –1210 |
8.9 |
0.34 |
7.77 |
|
| –1320 |
8.4 |
0.33 |
8.46 |
|
| –1430 |
9.6 |
0.36 |
9.17 |
|
| –1540 |
9.9 |
0.37 |
9.87 |
|
| –1650 |
11.1 |
0.39 |
10.58 |
Table 3. Fine Tunable Dispersion Compensation Unit Permutation Table
| Fine Unit |
Chromatic Dispersion (ps/nm) |
Maximum Insertion Loss (dB) |
Maximum PMD (ps) |
Maximum Fiber Length (km) |
| 0 |
2.4 |
0.10 |
0.02 |
|
| –45 |
3.5 |
0.13 |
0.32 |
|
| –90 |
3.6 |
0.15 |
0.61 |
|
| –135 |
4.7 |
0.18 |
0.90 |
|
| –180 |
3.8 |
0.18 |
1.19 |
|
| –225 |
4.9 |
0.20 |
1.49 |
|
| –270 |
5.0 |
0.21 |
1.78 |
|
| –315 |
6.1 |
0.23 |
2.08 |
|
| –360 |
4.4 |
0.22 |
2.35 |
|
| –405 |
5.5 |
0.24 |
2.65 |
|
| –450 |
5.6 |
0.25 |
2.94 |
|
| –495 |
6.7 |
0.26 |
3.24 |
|
| –540 |
5.8 |
0.26 |
3.53 |
|
| –585 |
6.9 |
0.28 |
3.82 |
|
| –630 |
7.0 |
0.29 |
4.11 |
|
| –675 |
8.1 |
0.30 |
4.41 |
Table 4. Regulatory Compliance
| Countries Supported |
|
| ANSI System |
ETSI System |
|
● Canada
● United States
● Korea
● Japan
● European Union
|
● European Union
● Africa
● CSI
● Australia
● New Zealand
● China
● Korea
● India
● Saudi Arabia
● South America
|
| EMC (Class A) |
|
|
● ICES-003 (2004)
● FCC47CFR15(2006)
|
● EN 300 386 Telecommunications Network Equipment (EMC): 2007 (Note: EMC-1)
● CISPR22 (2008) and CISPR24: 2002/ EN55024:2007 : Immunity levels: see EN61000-4-xx
● EN55022: 2007 Information Technology Equipment (Emissions)(2006) (EMC-2)
● EN55024: 1998/a2: 2003 Information Technology Equipment (Immunity)
|
| Safety |
|
|
● GR-1089-CORE Issue 4, NEBS EMC and Safety (June 2006)
|
● UL/CSA 60950-1, 2006
● IEC 60950-1(2005/12), 2nd Edition and National Differences as per CB Bulletin 112A
|
| Laser |
|
|
● UL/CSA 60950-1, 2006
● IEC-60825-2 Edition 3.1, 2007/01
|
● CDRH (accession letter and report)
● IEC 60825-1 Consol. Ed. 1.2 (incl. am1+am2) 2001-08
|
| Environmental |
|
|
● GR-63-CORE Issue 3, NEBS Physical Protection (Mar 2006)
● ETS 300-019-2-1 V2.1.2(Storage, Class 1.1)
|
● ETS 300-019-2-2 V2.1.2(1999-09): Transportation, Class 2.3
● ETS 300-019-2-3V2.2.2 (2003-04):Operational, Class 3.1E
|
| Optical |
|
|
● G.709
● G.975
|
|
| Miscellaneous |
|
|
● AT&T Network Equipment Development Standards (NEDS) Generic Requirements, AT&T 802-900-260
● SBC TP76200MP
|
● Verizon SIT.NEBS.NPI.2002.010
● Worldcom ESD requirement
|
Table 5. System Requirements
| Component |
Coarse Unit (15454-TDC-FC=) |
Fine Unit (15454-TDC-FC=) |
| Processor |
TCC2P/TCC2 |
TCC2P/TCC2 |
| Cross-connect |
All (not required) |
All (not required) |
| Shelf assembly |
15454-SA-HD or 15454-SA-HD-DDR shelf assembly with CC-FTA or FTA3 version fan-tray assembly |
15454-SA-ETSI shelf assembly with CC-FTA or SDH 48V fan-tray assembly |
| System software |
Release 9.1.0 ANSI or later |
Release 9.1.0 ETSI or later |
Table 6. Tunable Dispersion Compensation Unit Specifications
| Specification |
Coarse Unit (15454-TDC-FC=) |
Fine Unit (15454-TDC-FC=) |
| Management |
||
| Card LEDs
● Failure (FAIL)
● Active/standby (ACT/STBY)
● Signal fail (SF)
|
Red Green/yellow Yellow |
Red Green/yellow Yellow |
| Operating Environment |
||
| Temperature
● Normal
● Short term
1
|
0ºC to 40°C (32°F to 104°F) –5ºC to 55ºC (23ºF to 131ºF) |
0ºC to 40°C (32°F to 104°F) –5ºC to 55ºC (23ºF to 131ºF) |
| Relative humidity
● Normal
● Short term
|
5% to 85%, non-condensing 5% to 90% RH but not to exceed 0.024 kg water/kg of dry air |
5% to 85%, non-condensing 5% to 90% RH but not to exceed 0.024 kg water/kg of dry air |
| Storage Environment |
||
| Temperature |
–40°C to 70°C (–40°F to 158°F) |
–40°C to 70°C (–40°F to 158°F) |
| Relative humidity |
5% to 95% RH |
5 to 95% RH |
| Connectors type |
LC (All the ports) |
LC (All the ports) |
| Power |
||
| Card power draw
● Typical
● Maximum
|
9W 11W |
9W 11W |
| Physical |
||
| Size |
1 slot |
1 slot |
| Supported shelf slots |
1–6, 12–17 |
1–6, 12–17 |
1. Short-term refers to a period of not more than 96 consecutive hours and a total of not more than 15 days in 1 year. This refers to a total of 360 hours in any given year, but no more than 15 occurrences during that 1-year period.
Warranty Information
Find warranty information on Cisco.com at the Product Warranties page.
Ordering Information
To place an order, visit the Cisco Ordering Home Page. To download software, visit the Cisco Software Center. Table 7 provides ordering information for the Cisco ONS 15454 Tunable Dispersion Compensation Unit.
Table 7. Ordering Information
| Product Name |
Part Number |
| Tunable Dispersion Compensation Unit – C- Band – Fine |
15454-TDC-FC= |
| Tunable Dispersion Compensation Unit – C- Band – Coarse |
15454-TDC-CC= |
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For More Information
For more information about the Cisco ONS 15454 platform, visit www.cisco.com/en/US/products/hw/optical/ps1996/index.html or contact your local account representative.
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