Alcatel‑Lucent WWAA37 Optical Amplifier – WMAPZNZAAB CP Series

The Alcatel‑Lucent WWAA37 is a high‑performance optical amplifier module, identified by the part number WMAPZNZAAB. Part of the CP (Compact Power) series, this erbium‑doped fiber amplifier (EDFA) is designed for C‑band DWDM systems, delivering exceptional gain flatness, low noise figure, and robust automatic gain control (AGC) for metro, regional, and long‑haul optical transport networks.

Product Overview

The WWAA37 module is a key building block in Alcatel‑Lucent's optical line systems, providing the necessary boost to overcome fiber attenuation and splitter losses. It features a dual‑stage amplifier design with integrated variable optical attenuator (VOA) for gain tilt management. The unit supports both constant gain and constant output power modes, allowing network operators to optimise performance based on changing traffic patterns and fiber conditions.

The CP series emphasizes compact footprint and low power consumption, making it suitable for high‑density shelves in central offices and remote sites. The amplifier includes comprehensive monitoring of pump current, input/output power, and temperature, with alarms for out‑of‑range conditions.

Technical Specifications

• Product Type: Optical Amplifier Module

• Model: WWAA37

• Part Number: WMAPZNZAAB

• Series: CP (Compact Power)

• Operating Band: C‑band (1529 nm – 1565 nm)

• Gain Range: 15 dB to 25 dB (adjustable)

• Gain Flatness: ±0.5 dB (full band)

• Noise Figure: ≤ 4.5 dB (typical)

• Maximum Output Power: +20 dBm

• Input Power Range: –20 dBm to +5 dBm

• Pump Laser: Dual‑stage with wavelength lock

• Control Interfaces: I²C, RS‑485

• Power Supply: +5 VDC and –48 VDC (redundant)

• Power Consumption: 22 W typical

• Operating Temperature: –5°C to +55°C

• Dimensions: Single‑slot module (custom form factor)

Key Features

• Automatic Gain Control (AGC): Maintains constant gain despite input power variations.

• Gain Tilt Adjustment: Built‑in VOA for dynamic equalization of channel power.

• Fast Transient Suppression: Responds to add/drop events in < 1 ms to prevent power surges.

• Redundant Pump Lasers: Provides automatic switchover in case of pump failure.

• Real‑time Monitoring: Input/output power, gain, pump current, and temperature reported via SNMP.

Deployment Scenarios

The WWAA37 is deployed in DWDM terminal stations, in‑line repeaters, and ROADM nodes to amplify composite WDM signals before transmission over long fiber spans. In metro rings, it compensates for losses introduced by couplers and filters, enabling longer reach between nodes. For regional networks, multiple amplifiers can be cascaded to support distances exceeding 500 km.

Integration with Alcatel‑Lucent's 1830 PSS and 1626 Light Manager platforms is seamless, with full management via the NMS.

Maintenance and Reliability

The module includes self‑diagnostic routines and health monitoring. MTBF exceeds 200,000 hours. Field replacement is hot‑swappable, and all optical connectors are angled physical contact (APC) for low return loss.

Compliance

Meets ITU‑T G.664, Telcordia GR‑1312, and RoHS standards.

Conclusion

The Alcatel‑Lucent WWAA37 optical amplifier (WMAPZNZAAB) offers a reliable, high‑performance solution for C‑band DWDM amplification. Its compact design, advanced control features, and robust reliability make it an essential component for modern optical transport networks.