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Cisco ONS 15454 Series Multiservice Transport Platforms

Enhanced C-Band Optical Amplifier for the Cisco ONS 15454 Multiservice Transport

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The Cisco® ONS 15454 Multiservice Transport Platform (MSTP) provides a comprehensive, intelligent dense wavelength-division multiplexing (DWDM) solution for expanding metropolitan (metro), regional, and long-haul bandwidth.

Product Overview

The Cisco ONS 15454 MSTP offers an enhanced optical amplifier card (Figure 1) operating in the C-band region of the optical spectrum to extend the reach and capacity of a metro, regional, or long-haul network. The optical amplifier cards are part of the Cisco ONS 15454 MSTP intelligent DWDM architecture engineered to reduce DWDM complexity and speed the deployment of next-generation networking solutions.
The Cisco ONS 15454 enhanced optical amplifier card is a plug-in module that takes advantage of the proven Cisco ONS 15454 carrier-class features. This card delivers the reach and optical performances to support a single DWDM channel all the way to 80 channels today, to meet the requirements of service provider and enterprise networks. Table 1 outlines the C-band optical amplifier plug-in card types available for the Cisco ONS 15454 MSTP with the applications they are designed to support.

Figure 1. Cisco ONS 15454 Enhanced C-Band Optical Amplifier (OPT-AMP-C)

Table 1. C-Band Optical Amplifier Cards with Applications

Component

Deployment Application

Enhanced optical amplifier
(OPT-AMP-C)

This flexible amplifier can be used as a preamplifier or as a booster amplifier, providing a total output power of 20 dBm. It integrates an optical service channel splitter/combiner to allow the optical supervisory channel (OSC) to be sent to and received from the optical service channel module (OSCM) card. It employs a two-stage amplifier design to allow insertion of dispersion-management devices to compensate for pulse spreading at higher multiplexer speeds.

Deployment locations include any site where high per-channel power or high optical gain is required.

Enhanced optical booster amplifier
(OPT-BST-E)

This product amplifies the outgoing composite DWDM signal to overcome the attenuation of the fiber network, providing a total output power of 20 dBm. It integrates an optical service channel splitter/combiner to allow the OSC to be sent to and received from the OSCM card.

Deployment locations include any site where high per-channel power is required to hit the fiber span.

Optical booster amplifier
(OPT-BST)

This product amplifies the outgoing composite DWDM signal to overcome the attenuation of the fiber network, providing a total output power of 17 dBm. It integrates an optical service channel splitter/combiner to allow the OSC to be sent to and received from the OSCM card.

Deployment locations include any site where amplification of the DWDM signals is required before hitting the fiber span.

17 dB gain optical amplifier
(OPT-AMP-17C)

This flexible amplifier can be used as a preamplifier or as a booster amplifier, providing a total output power of 17 dBm. It integrates an optical service channel splitter/combiner to allow the OSC to be sent to and received from the OSCM card. It employs a single-stage amplifier design to optimize the noise figure and operates with a fixed gain of 17 dB.

Deployment locations include any site where fixed gain amplification can be used to optimize node gain figure and dispersion-management devices are not needed.

Optical preamplifier
(OPT-PRE)

This product amplifies the incoming composite DWDM signal to allow a sufficient optical power level to optical receivers on dropped wavelengths and to overcome the insertion losses of the reconfigurable or fixed optical filters in the node. It employs a two-stage amplifier design to allow insertion of dispersion-management devices to compensate for pulse spreading at higher multiplexer speeds, providing a total output power of 17 dBm.

Deployment locations include any site where variable gain amplification and/or dispersion-management devices are required in the receive direction.

The OPT-AMP-C takes advantage of the latest in amplifier technology, variable optical attenuators, photo diodes, and extensive software to facilitate a high degree of automation for simplified operations. The OPT-AMP-C features low-noise-gain blocks for C-band optical amplification requirements. For flexibility of application support, the amplifier can be used either as a pre-amplifier or as a booster amplifier. When used as a booster amplifier, the integrated OSC splitting and combining capability allows the OSCM unit to provide visibility and manageability of all the nodes of the network. The amplifier also provides fast-transient suppression to respond quickly to network changes without impairments and degradation of existing wavelengths. The amplifier integrates a software-controllable variable optical attenuator (VOA) to provide gain tilt control capabilities and to optimize the mid-access loss between the two amplification stages when different dispersion compensation units (DCUs) are used. The OPT-AMP-C provides optical safety functionality using the signal and OSC loss detection to help ensure user safety when operating the network, and complies with international standard requirements.
The flexibility provided by the OPT-AMP-C card and the possibility to configure it through software to operate as a preamplifier or as a booster amplifier greatly simplify the operation of the Cisco ONS 15454 MSTP and reduce the number of spare units to be kept by the users. Midstage access loss (MAL) provided by the OPT-AMP-C card can be used, when the card is used as a booster amplifier, to perform chromatic dispersion precompensation at the transmit location, improving overall system performances - especially with high (such as 10 Gbps) and very high (such as 40 Gbps) bit rates and services.
The optical amplifier card incorporates faceplate-mounted LEDs to provide a quick visual check of the operational status at the card. Printed on each of the faceplates is an icon, an orange circle, which is mapped to shelf-slot icons indicating the shelf slot where the card can be physically installed. The card is supported by the integrated Cisco Transport Controller craft manager on the Cisco ONS 15454, which provides the user access for operations, administration, maintenance, and provisioning (OAM&P) for the system.
Selection and deployment of the Cisco ONS 15454 Enhanced C-Band Optical Amplifier (OPT-AMP-C) depend on the requirements of the network. The Cisco Transport Planner optical design tool is available to assist in the engineering, bill-of-material development, and deployment of the DWDM network. Figure 2 shows the block diagram of the OPT-AMP-C. Figure 3 shows a sample signal-flow diagram for an Optical Line Amplifier (OLA) site using OPT-AMP-C units while Figure 4 shows a signal flow diagram for a Reconfigurable Optical Add/Drop Multiplexer (ROADM) site.

Figure 2. OPT-AMP-C Block Diagram

Figure 3. Cisco ONS 15454 MSTP OLA Site Signal Flow when OPT-AMP-C is Used

Figure 4. Cisco ONS 15454 MSTP ROADM Site Signal Flow when OPT-AMP-C is Used

Product Specifications

Table 2 gives regulatory compliance, Table 3 gives system requirements, and Tables 4 and 5 provide card and optical specifications for the Cisco ONS 15454 Enhanced C-Band Optical Amplifier.

Table 2. Regulatory Compliance1

ANSI (SONET) System

ETSI (SDH) System

Supported Countries

• Canada
• United States
• Europe
• Latin America
• Japan
• Asia Pacific
• Middle East and Africa

EMC (Class A)

• ICES-003 Issue 3 (1997)
• GR-1089-CORE, Issue 3
• FCC 47CFR15 subpart B (2004)
• EN 300 386 v1.3.3 (2005)
• CISPR22 (2005), CISPR24 (+ Am 1, Am 2 2002)
• EN55022 and EN55024

Safety

• UL/CSA  60950 -1 First Edition  (2003)
• GR-1089-CORE , Issue 3 
• UL/CSA 60950 -1 First Edition (2003)
• IEC 60950 -1 (2001-01) First Edition/EN60950 -1  (2001), First Edition

Laser

• UL/CSA  60950 -1 First Edition  (2003)
• IEC 60950 -1 (2001-01) First Edition/EN60950 -1  (2001), First Edition 
• IEC 60825-2 (2004-06 )  Third Edition
• IEC 60825-1 +Am.1+ Am.2 (2001)
• CDRH (Accession letter and report)

Environmental

• GR-63-CORE,  Issue 2 and Issue 3
• ETS 300-019-2-1 V2.1.2 (Storage, Class 1.1)
• ETS 300-019-2-2 V2.1.2 (Transportation, Class 2.3)
• ETS 300-019-2-3 V2.1.2 (Operational, Class 3.1E)

Optical

• GR-253-CORE
• G.692
 

Quality

• TR-NWT-000332, Issue 4, Method 1 calculation for 20-year mean time between failure (MTBF)

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 3. System Requirements

Component

Cisco ONS 15454 ANSI (SONET)

Cisco ONS 15454 ETSI (SDH)

Processor

TCC2P and TCC2

TCC2P and TCC2

Cross-connect

All (not required)

All (not required)

Shelf assembly

15454-SA-HD or 15454-SA-HD-DDR shelf assembly with CC-FTA version fan-tray assembly

15454E-SA-ETSI shelf assembly with CC-FTA version fan-tray assembly

System software

Release 8.5 ANSI or later

Release 8.5 ETSI or later

Slot compatibility

1 to 6 and 12 to 17

1 to 6 and 12 to 17

Table 4. Card Specifications

Specification

Value

Management

Card LEDs

Failure (FAIL)

Active/standby (ACT/STBY)

Signal fail (SF)

Red

Green/yellow

Yellow

General Specifications

Card power draw

Typical

Maximum

45W

55W

Weight (not including clam shell)

1.4 kg / 3.08 lbs

Optical connectors

LC

Size

1 slot

Reliability

Predicted MTBF

332,849 hrs

Operating Environment

Temperature

23 to 131°F (-5 to 55°C)

Humidity

5 to 95% noncondensing

Storage Environment

Temperature

-40 to 185°F (-40 to 85°C)

Humidity

5 to 95% noncondensing

Transportation Environment

Temperature

-40 to 158°F (-40 to 70°C)

Humidity

5 to 95% noncondensing

Table 5. Optical Specifications

Specification

Value

Channels allocation

1529.0 to 1562.5 nm

Input power range

-15 to 8 dBm (full channel load)

-40 to -17 dBm (single channel)

Channel output power range

-5 to 20 dBm

Maximum total output power

20 dBm

Channel signal-spontaneous noise figure

5.5 dB with gain = 35 dB

6.5 dB with gain ≥ 24 dB

Input reflectance

40 dB

Output reflectance

40 dB

Pump leakage to input/output

-20 dBm

Maximum reflectance tolerable at input

14 dB

Maximum reflectance tolerable at output

14 dB

Channel addition/removal (steady-state) gain response

Between 5 ms and 1 second

Channel addition/removal (transient) gain response

Maximum

Typical

0.5 ms (3 dB input power excursion, maximum undershoot and overshoot < 1.8 dB)

0.19 ms (3 dB input power excursion, maximum undershoot and overshoot < 1.8 dB)

Channel Gain

Between 12 dB and 35 dB

Multichannel gain variation (inter-channel gain difference)

Maximum

Typical


1.2 dB

1.0 dB

Multichannel gain tilt

0 dB (gain ≤ 24 dB)

Maximum 1 dB (gain ≥ 25dB)

Maximum Polarization Mode Dispersion (PMD)

0.15 ps

Ordering Information

Tables 6 gives ordering information for the Cisco ONS 15454 Enhanced C-Band Optical Amplifier card.

Table 6. Ordering Information

Part Number

Description

15454-OPT-AMP-C=

Enhanced optical amplifier, 20 dBm output power, can be configured as preamplifier or booster, C-band, 80 channel, 50-GHz compatible, LC connectors, midstage access, includes one 4-dB LC/LC attenuated loopback (to be used if DCU is not required) and two 2-meter LC/LC fiber-optic cables

1All compliance testing and documentation may not be completed at release of the product. Check with your sales representative for countries outside of Canada, the United States, and the European Union.