QDD-ZR-400G is a 400G QSFP-DD Open ZR+ coherent optical transceiver that supports DP-QPSK, DP-8QAM, and DP-16QAM modulation formats alongside interoperable Forward Error Correction (oFEC) across the full C-band DWDM spectrum. Operating within a commercial temperature range of 0°C to 70°C, it features real-time digital optical monitoring and flexible 100G-to-400G transmission capabilities for extended metro and Data Center Interconnect (DCI) networks.
Key Features of FS QDD-ZR-400G Compatible LINK-PP 400G QSFP-DD
FS QDD-ZR-400G Compatible LINK-PP serves as an adaptable 400G QSFP-DD coherent optical module built for single-span data transmissions across a minimum reach of 120km. The combination of multi-rate flexibility, standard duplex LC interfaces, and comprehensive DOM telemetry ensures stable, cost-effective connectivity throughout metro backbones.
This compact transceiver fully complies with the QSFP-DD MSA specification to ensure broad hardware compatibility and simple system integration. Featuring a 76-pin pad design and standard host connector, the hot-pluggable module allows seamless installation and maintenance without disrupting existing network operations.
QDD-ZR-400G: 400 Gbps Connectivity for Extended DCI Links
Flexible multi-rate architecture enables selectable line rates of 400G, 300G, 200G, and 100G to match varying network bandwidth requirements. These adaptable transmission speeds make the module an ideal solution for inter-data center connections and dynamic traffic aggregation.
QDD-ZR-400G Module with 1528.77~1566.52nm Wavelength
The optical transmission operates across a wide C-band wavelength range from 1528.77nm to 1566.52nm with 75 GHz channel spacing. With this optimized spectrum management, the system can support an aggregate data capacity of up to 25.6 Tbit/s over a single fiber pair.
QDD-ZR-400G Module Supporting 120km+ Transmission
A minimum reach of 120km is achieved directly through advanced coherent optical technology without requiring costly intermediate amplification sites. Such reach makes it particularly well-suited for point-to-point regional links and campus interconnects requiring stable single-span connectivity.
QDD-ZR-400G Module with Duplex LC Interface
The duplex LC optical receptacle provides a familiar, dependable physical connection for common single-mode fiber patch cables. Its durable optical interface guarantees low insertion loss and easy handling in high-density rack environments.
QDD-ZR-400G Module with DOM for Real-Time Monitoring
Built-in Digital Optical Monitoring (DOM) capabilities continuously track critical operating parameters such as optical power, module temperature, and laser bias current. Network operators can leverage this real-time telemetry to detect potential faults early and maintain overall link stability.
FS QDD-ZR-400G Compatible LINK-PP QSFP-DD module fully complies with major global standards, including ISO 9001, CE, RoHS, and FCC certifications; this ensures strict environmental safety and manufacturing quality across all production batches.
Every transceiver undergoes rigorous optical and thermal screening to ensure signal integrity, and each unit is fully validated before leaving the factory.
QDD-ZR-400G Quality Certifications
These verified manufacturing credentials guarantee dependable long-term operation; network operators can deploy each optical transceiver with complete confidence.
This product is in conformity with ISO9001. This system is valid to a company engaging in development, production and supply service of fiber optical products. Please contact us to learn more.
ISO/IEC 27001 is an international standard for managing and processing information security. This standard is jointly developed by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It sets out requirements for establishing, implementing, maintaining, and continually improving an information security management system (ISMS). Ensuring the confidentiality, integrity, and availability of organizational information assets, obtaining an ISO 27001 certificate means that the enterprise has passed the audit conducted by a certification body, proving that its information security management system has met the requirements of the international standard. Please contact us to learn more.
This product is in conformity with ISO14001.It is intended for use by an organization seeking to manage its environmental responsibilities in a systematic manner that contributes to the environmental pillar of sustainability. Please contact us to learn more.
ISO 45001 is a global standard that sets out the requirements for an occupational health and safety management system (OH&SMS).
REACH is a European Union regulation concerning the Registration, Evaluation, Authorization and Restriction of Chemicals. It came into force on 1st June 2007 and replaced a number of European Directives and Regulations with a single system. The regulation aims to protect human health and environmental safety, maintain and improve the competitiveness of the EU chemical industry, and develop innovative capabilities for non-toxic and harmless compounds to prevent market fragmentation, increase the transparency of the use of chemicals, promote non-animal experiments, and pursue sustainable social development.Please contact us to learn more.
This product meets the applicable requirements of Directive (EU) 2015/863 of RoHS. It restricts the use of 10 hazardous materials in the manufacture of various types of electronic and electrical equipment: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and four different phthalates. Please contact us to learn more.
This product fully accords with the FCC, which aims to manage the radio wave and magnetic fields more reasonably. Please contact us to learn more.
CB is an international system operated by IECEE. This product is based on IEC standards for testing the safety performance of electrical products. Please contact us to learn more.
This product fully accords with UKCA (UK Conformity Assessed) certificate, which signifies that it meets all relevant quality standards as well as health and safety requirements. Please contact us to learn more.
UL certification is a non-mandatory certification in the United States,mainly testing and certification of product safety performance.Its ultimate purpose is to obtain products with a fairly safe level for the market,and to contribute to ensuring human health and property safety.Please contact us to learn more.
QDD-ZR-400G Certified for Reliable Host-Device Compatibility
Extensive switch and router testing confirms plug-and-play interoperability across leading vendor platforms, minimizing setup time and avoiding link errors.
Every QDD-ZR-400G 400G QSFP-DD module undergoes strict physical layer and optical testing to guarantee stable long-reach transmission. To review comprehensive validation procedures, explore the LINK-PP Test Support Center.
Optical Spectrum Test
Inspect laser wavelength accuracy and spectral purity on optical channels.
Eye Pattern Test
Analyze optical signal clarity and transmitter jitter to ensure compliance.
Bit Error Rate Test
Measure data transmission accuracy to prevent packet loss under stress.
Temperature Test
Monitor module thermal stability across full commercial operating conditions continuously.
Product Shipping for FS QDD-ZR-400G Compatible LINK-PP 400G QSFP-DD
Each QDD-ZR-400G 400G QSFP-DD optical module is securely packaged to prevent physical and electrostatic damage during transit. Reliable global shipping partners ensure prompt and secure delivery directly to your facility.
Anti-Static Protective Packaging
Safely protect electronic components from electrostatic discharge during transport.
Shock-Resistant Transport Protection
Safeguard optical transceivers against accidental impacts and vibrations during transit.
Fast Order Processing and Dispatch
Expedite order processing quickly to guarantee prompt dispatch from inventory.
Global Logistics and International Delivery
Deliver optical modules worldwide through dependable express carriers with tracking.
Simply seat the QDD-ZR-400G coherent transceiver into a QSFP-DD slot until latched, then mate duplex LC single-mode cables. Once recognized by host software, it delivers instant multi-rate coherent optical transport, making it ideal for extended DCI links that bridge regional campus data centers across a minimum distance of 120km.
QDD-ZR-400G Technical Support
LINK-PP offers end-to-end technical support, from pre-sales consultation to post-deployment assistance, ensuring smooth integration and reliable network performance.
Pre-Sales Technical Consultation
Professional guidance to help you select the optimal QDD-ZR-400G module for your network design and application needs.
Compatibility Verification Support
Validated compatibility with LINK-PP switches and other mainstream networking platforms for seamless deployment.
Deployment & Installation Assistance
Comprehensive step-by-step guidance for installation, configuration, and initial setup, ensuring accurate deployment and reliable, stable operation from the start.
Long-Term Technical Assurance
Ongoing technical support throughout the product lifecycle, delivering long-term stability for enterprise and carrier-grade networks.
A:
No, you do not need to power down the router. The module is fully hot-pluggable into standard QSFP-DD 76-pin electrical interfaces, allowing maintenance or module replacement with zero downtime to the rest of the chassis. By
admin
A:
Yes, absolutely. The module supports selectable line rates of 100G, 200G, 300G, and 400G. You can easily switch down to 100G or 200G with DP-QPSK modulation to tolerate higher fiber attenuation over longer spans. By
admin
A:
It runs on standard switch port power (+3.3V DC power rail) supplied directly through the standard 76-pin QSFP-DD connector. You do not need any external power injectors or custom power cabling. By
admin
A:
Yes, the module features integrated OpenZR+ oFEC (Interoperable Forward Error Correction), which provides high coding gain to correct bit errors caused by optical noise, chromatic dispersion, and OSNR degradation due to fiber attenuation, ensuring clean, flap-free data transmission. By
admin
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496282
496209
B***y
Singapore
Verified
Purchase
5 .0
2026-05-08
We rolled out 10 optical modules for regional campus fiber backbones. Tuning across the full C-band (1528.77nm to 1566.52nm) through CLI was seamless thanks to standard OIF C-CMIS. Zero link flaps observed over 30 days of nonstop 400Gbps production traffic. Solid choice for cost-effective edge DCI. :-D
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496282
496204
S***l
Republic of Korea
Verified
Purchase
5 .0
2026-03-31
Deployed for inter-site enterprise cloud connectivity. Full compatibility with IEEE 802.3-2018 and QSFP-DD Rev 6.3 hardware specs. Switched between DP-QPSK for extreme reach and DP-16QAM for max bandwidth without any firmware quirks or stability drops. Very impressed with the build quality.
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496282
496206
K***s
Italy
Verified
Purchase
5 .0
2025-11-08
Massive upgrade for our high-speed ISP upstream peering links. Bypassed dedicated line systems and plugged straight into core router QSFP-DD ports. FEC handled minor fiber attenuation effortlessly, delivering a clean 400Gbps line rate with low jitter throughout enterprise peak hours. :-)
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496282
496218
B***r
Turkey
Verified
Purchase
5 .0
2025-10-19
Integrated this LQD-DCO400-ZRC 400G module into our Arista edge routers for a 125km cross-city link. The module synced immediately on the 75GHz grid with DP-16QAM. DOM reporting gives us clear Tx/Rx power metrics, and rack temperatures stayed at 48°C even under sustained heavy replication loads.
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496282
496210
L***l
Argentina
Verified
Purchase
5 .0
2025-07-27
This was a practical choice for a long-haul Ethernet upgrade. We used DP-QPSK first for the initial validation, then adjusted the configuration during lab testing. The module maintained a reliable link across our installed single-mode fiber route.
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496282
496201
H***s
Indonesia
Verified
Purchase
5 .0
2025-04-04
Swapped out older external transponders for these coherent QSFP-DD optical transceivers on our metro ring. The built-in OFEC provides impressive coding gain, easily closing our optical budget over single-mode fiber without extra optical amplifiers. The duplex LC patch interface made swapping clean and tidy.
United States · English · USD
