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400G ZR+ High Power Coherent QSFP-DD Transceiver

By C-LIGHT Marketing 丨 Jun 20, 2025
Table of Contents

    The ‌400G QSFP-DD ZR+ High Power Coherent Transceiver‌ is a high-performance optical module designed for 400Gbps data transmission, featuring QSFP-DD form factor and extended reach up to 80km. Key highlights include ‌low power consumption‌, ‌high-density deployment‌, and advanced ‌DSP technology‌ for enhanced signal integrity. Ideal for ‌Data Center Interconnect , metro, and backbone networks, it leverages coherent optics to support bandwidth-intensive applications like ‌5G, cloud computing, and AI‌. This transceiver is pivotal for next-gen optical infrastructure, offering scalability and reliability.


    Product Features
    400G ZR+ High Power Coherent QSFP-DD Transceiver●400GBASE-ZR+ DCO QSFP-DD

    ●IEEE 400GE or n×100GE (n = 1, 2, 4) Ethernet compliant host interface

    ●Coherent 400G/200G/100G optical interface based on ZR+ MSA

    ●Tx power= 0dBm, OSNR tolerance> 23.5 dB/0.1nm

    ●QSFP-DD form factor, Type 2A (compact size: 93.26 mm × 18.35 mm × 8.5 mm)

    ●400GAUI-8, 4×100GAUI-2, 2×100GAUI-2, 2×CAUI-4, 100GAUI-2 and CAUI-4 electrical interfaces

    ●Compliant with "QSFP-DD Hardware Specification Rev 6.2" 

    ●Compliant with "QSFP-DD Common Management Interface Specification Rev 5.2" 

    ●Full C-band tunable, flex grid

    ●Compatible with LC duplex connectors

    ●Maximum power consumption: 23 W

    ●Operating case temperature: 0°C to 70°C

    ●3.3 V power supply


    Data Sheet
    400G-ZR+High-Power-Coherent-QSFP-DD-Transceiver.pdf


    If you are interested in the 400G ZR+ High Power Coherent QSFP-DD Transceiver, please contact us sales@c-light.com

    400G ZR+ High Power Coherent QSFP-DD Transceiver FAQ

    Q1: What is a 400G ZR+ High Power Coherent QSFP-DD transceiver?

    A 400G ZR+ High Power Coherent QSFP-DD transceiver is a pluggable coherent optical module designed for long-distance 400GbE transmission. It combines coherent DSP technology with a QSFP-DD form factor to provide high-capacity optical transport for metro and DCI networks.

    Key features include:

    • 400Gbps data rate

    • Coherent ZR+ transmission

    • Up to 80km and beyond

    • Full C-Band tunable

    • QSFP-DD Type 2A package

    It is ideal for DCI, metro networks, backbone transport, and AI-driven optical infrastructure.

    Q2: How does a 400G ZR+ coherent transceiver work?

    The module integrates a coherent DSP and tunable laser to transmit high-speed optical signals over DWDM networks. It supports coherent modulation and digital signal processing, delivering long-distance transmission with improved signal quality and spectral efficiency.

    Q3: What are the key features of the C-LIGHT 400G ZR+ QSFP-DD transceiver?

    The C-LIGHT module is designed for high-capacity coherent optical networking.

    Key features include:

    • 400GbE coherent transmission

    • ZR+ optical interface

    • Full C-Band tunable

    • QSFP-DD Type 2A

    • CMIS Rev 5.2 compliant

    • Maximum power consumption of 23W

    • Duplex LC connector

    These features provide reliable long-distance performance for carrier and DCI applications.

    Q4: What are the advantages of a 400G ZR+ coherent transceiver?

    Compared with conventional 400G optics, a ZR+ coherent module offers:

    • Longer transmission reach

    • Higher spectral efficiency

    • Flexible wavelength tuning

    • Lower cost than traditional transport systems

    • Simplified network deployment

    It is an efficient solution for high-capacity optical transport.

    Q5: Where are 400G ZR+ QSFP-DD transceivers commonly used?

    These modules are widely deployed in long-haul optical networks.

    Typical applications include:

    • Data Center Interconnect (DCI)

    • Metro optical networks

    • Backbone transmission

    • 5G transport networks

    • Cloud computing

    • AI infrastructure

    These applications require long-distance, high-bandwidth optical connectivity.

    Q6: Why choose a 400G ZR+ module instead of a standard 400G transceiver?

    A 400G ZR+ module integrates coherent transmission technology, enabling significantly longer transmission distances than standard PAM4 optical modules.

    Its advantages include:

    • Longer reach

    • Better optical performance

    • Flexible DWDM deployment

    • Higher network capacity

    • Easier scalability

    It is ideal for metro and backbone optical networks.

    Q7: How do you choose the right 400G ZR+ coherent transceiver?

    When selecting a 400G ZR+ module, consider:

    • Transmission distance

    • DWDM wavelength support

    • Optical power budget

    • Switch compatibility

    • Power consumption

    • Network architecture

    Choosing the right module ensures reliable coherent transmission and future network expansion.

    Q8: Why choose the C-LIGHT 400G ZR+ High Power QSFP-DD transceiver?

    The C-LIGHT 400G ZR+ QSFP-DD combines coherent optical technology, flexible wavelength tuning, and long-distance performance in a compact QSFP-DD package.

    It provides:

    • 400Gbps coherent transmission

    • Full C-Band tunable operation

    • Long-distance optical transport

    • QSFP-DD high-density design

    • Excellent platform compatibility

    It is an ideal solution for DCI, metro networks, backbone transport, cloud computing, and AI networking.

    For any questions, please contact us by email or WhatsApp.

    Email: sales@c-light.com

    WhatsApp: +86 132 6656 7067

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