Alcatel‑Lucent 41A12C FT‑2000 Optical Transponder Unit – 108188053

The Alcatel‑Lucent 41A12C is a high‑performance optical transponder unit (OTU) from the FT‑2000 series, identified by part number 108188053 and hardware code SNQTANAAAC. This wavelength‑tunable module is designed for dense wavelength division multiplexing (DWDM) systems, converting client‑side 10G signals (Ethernet, SONET/SDH, Fibre Channel) into ITU‑T grid‑compliant optical wavelengths for transport over metro, regional, and long‑haul fiber networks.

The unit incorporates a tunable laser covering the full C‑band with 50 GHz channel spacing, enabling flexible wavelength assignment and sparing. It features integrated forward error correction (FEC) based on G.709 standard, improving link budget and extending reach up to 120 km without regeneration. The module supports both fixed grid and flex‑grid configurations, adapting to evolving network requirements.

Its pluggable design (SFP+ client side, XFP or SFP+ line side) allows easy integration into Alcatel‑Lucent 1830 PSS, 1626 Light Manager, and third‑party DWDM shelves. The unit includes comprehensive digital diagnostics (DOM) for laser bias, temperature, and optical power monitoring.

Technical Specifications

• Product Type: Optical Transponder (OTU)

• Model: FT‑2000

• Part Number: 108188053 / SNQTANAAAC

• Client Interface: SFP+ (10GBASE‑R, OC‑192/STM‑64, 10G FC)

• Line Interface: Tunable C‑band (1529 – 1565 nm), 50 GHz spacing

• Line Rate: 10.709 Gbps (OTU2) with G.709 FEC

• Output Power: +3 dBm (adjustable)

• Receiver Sensitivity: –24 dBm (with FEC, BER 1e‑12)

• Reach: Up to 80 km (standard), 120 km (with enhanced FEC)

• FEC: Reed‑Solomon (G.709) and optional super‑FEC

• Management: I²C, MDIO, optical supervisory channel (OSC)

• Power Supply: +5 VDC (from host shelf)

• Power Consumption: 12 W typical

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

• Dimensions: Pluggable transponder (MSA compliant)

• Compliance: ITU‑T G.692, G.709, RoHS

Key Features

• Wavelength tunability for flexible channel provisioning and sparing.

• Multi‑protocol client support reduces inventory complexity.

• Advanced FEC extends optical reach and improves margin.

• Real‑time monitoring via DOM for predictive maintenance.

• Hitless wavelength switching (with coordination).

Deployment Scenarios

Used in metro core and long‑haul DWDM networks to aggregate 10G client traffic from routers and switches. Ideal for data centre interconnect (DCI), mobile backhaul, and enterprise leased‑line services.

Management

Managed via TL1, SNMP, or web GUI through the host platform. Provides detailed performance and alarm reporting.

Reliability

MTBF > 200,000 hours; redundant clock inputs and fail‑safe laser shutdown.

Conclusion

The Alcatel‑Lucent 41A12C FT‑2000 optical transponder offers a flexible, high‑performance solution for wavelength conversion, combining tunability, advanced FEC, and robust diagnostics.