• Cisco DP04QSDD-LLH-A1 400G QSFP-DD silver transceiver with LC connectors
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Cisco

Cisco DP04QSDD-LLH-A1 | 400G QSFP‑DD coherent | DWDM L‑band (≈1565–1625 nm) | ULH reach | tunable | duplex LC | OpenZR+/OIF compatible

DP04QSDD-LLH-A1

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Description

Coherent 400G QSFP‑DD transceiver for ultra‑long‑haul DWDM links in the L‑band. The module is tunable across the L‑band for flexible wavelength planning and integrates coherent DSP with advanced FEC for high spectral efficiency over amplified spans. Ideal for long‑reach metro, regional, and backbone applications where space and power savings from QSFP‑DD are desired.

Features

QSFP‑DD coherent design for high density and lower power
- Tunable L‑band operation for wavelength flexibility
- Advanced FEC and DSP for extended reach
- Duplex LC connector simplifies field integration
- Open, standards‑aligned operation for multi‑vendor optical networks

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Datasheet

Technical Specifications

Form factor: QSFP‑DD coherent pluggable
- Line rate: 400 Gb/s
- Optical band: Tunable DWDM L‑band (≈1565–1625 nm)
- Reach class: Ultra‑Long‑Haul (ULH), link budget dependent
- Connector: Duplex LC (line side)
- Host interface: 8×50G PAM4 electrical lanes
- Protocols: Coherent DWDM with advanced FEC; OpenZR+/OIF 400G alignment (vendor software dependent)
- Use cases: Long‑reach metro, regional, and backbone transport

FAQs

Q: Is this module tunable?
A: Yes. It is tunable across the DWDM L‑band for flexible wavelength assignment.

Q: What fiber connector does it use?
A: The line‑side interface uses a duplex LC connector.

Q: What distances can it support?
A: As a ULH‑class coherent module, achievable distance depends on span design, amplification, ROADMs, and FEC settings.

Q: What host interface is required?
A: A QSFP‑DD port supporting 8×50G PAM4 electrical lanes and coherent module management (CMIS) is required.

Datasheet

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