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Cisco ONS 15454 Series Multiservice Transport Platforms

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.

Figure 1. Cisco ONS 15454 Tunable Dispersion Compensation Unit

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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).

Figure 2. Remote Dispersion Management

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

Figure 3. Tunable Dispersion Compensation Block Diagram

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)

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

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.