Juniper QDD-2X400G-FR4-P Compatible 800G QSFP-DD 2FR4 Optical Transceiver Module | HYTOPTODEVICE

Product Detail：
HYTOPTODEVICE 800G QSFP-DD Transceiver | Juniper Compatible 2x400GBASE-FR4 Optical Transceiver Module(SMF, 1310nm, 2km, Dual Duplex LC, DOM)

      The QDD-2X400G-FR4-P is a high-performance Juniper compatible 800G optical transceiver, engineered for next-generation 800G Ethernet, Data Center Interconnect (DCI), and InfiniBand Interconnects. It is a Dual-Port 2x400G FR4 module,QSFP-DD form factor.Each of the two 400G ports utilizes Coarse Wavelength Division Multiplexing (CWDM) technology to multiplex 4 lanes of 100G PAM4 optical signals over a single duplex LC fiber pair (wavelengths: 1271nm, 1291nm, 1311nm, and 1331nm). scaling the reach up to 2km. Fully compliant with the QSFP-DD MSA, 100G Lambda MSA, and IEEE 802.3ck standards. It features a specialized Dual Duplex LC connector interface with single-mode fiber(SMF).Real-time DOM supported.


Full Compatibility List and Supported Devices of  Juniper 800G Transceiver

HYTOPTODEVICE  800G transceiver module is 100% pre-programmed and rigorously tested to ensure complete compatibility with Juniper OS platforms, delivering seamless plug-and-play operation with Juniper 800G hardware, including:

• Juniper PTX10000 Series Packet Transport Routers:

  • PTX10008 / PTX10016 (equipped with high-density 800G line cards like the PTX10K-LC1201-36SE)

• Juniper QFX5240 Series Data Center Switches:

  • QFX5240-64QD (64-port 800G high-performance configurations)

• Juniper ACX Series Access Routers:

  • Metro and edge routing aggregation systems (e.g., ACX7000 series) configured with QSFP-DD800 ports.
    
    

Primary Application Scenarios of 800G QSFP-DD Optical Transceiver

• Medium-Reach Cloud & Data Center Interconnect (DCI): Engineered to connect switches and routers across different data halls, floors, or nearby buildings up to 2km away, surpassing the 500m limits of short-reach parallel optics.

• High-Density 400G Aggregation Gateways: Allows network engineers to aggregate two distinct 400G upstream switches into a single physical 800G cage on a Juniper core router, maximizing port efficiency and rack density.

• Fiber Infrastructure Cost Optimization: Drastically reduces total cost of ownership (TCO) by leveraging CWDM technology to run a 400G stream over just 2 fibers (1 Tx / 1 Rx), avoiding the need to deploy expensive, multi-fiber MPO parallel cabling.

• Hyperscale Core and Edge Routing Fabrics: Specifically tailored to match the strict thermal and electrical requirements of high-capacity Juniper spine switches and packet transport routing platforms.
  
  

Key Product Parameters of Dual Duplex LC Transceivers

Connectivity Solutions for 800G Optical Transceiver

Q1: What is the exact data rate and interface layout of the  Juniper QDD-2X400G-FR4-P?A1:It is an 800Gbps module in an QSFP -DD form factor employing a dual-port (2x400G) architecture. It provides two completely independent 400Gbps FR4 logical interfaces on a single physical module.

Q2: What type of fiber connector and cabling for this 800G transceiver?A2: It features a specialized Dual Duplex LC connector interface. It uses standard single-mode fiber (SMF) duplex LC-to-LC patch cords, eliminating the need for expensive MPO breakout cables.

Q3: What is the maximum reach and optical wavelength specs for QDD-800G-2FR4?A3: It reach up to 2km over single-mode fiber(SMF) via dual duplex LC connector.It has 2x400G port, Each 400G port utilizes 4 CWDM technology(wavelengths: 1271nm, 1291nm, 1311nm, and 1331nm).

Q4: What does the "-P" suffix indicate in the Juniper QDD-2X400G-FR4-P part number? A4: In Juniper's product ecosystem, the "-P" denotes optimized pluggable specifications designed to interface flawlessly with modern high-performance Junos platforms, ensuring precise compliance with system-level power dissipation, thermal cooling, and software feature recognition profiles.

Q5: What is the keydifference between QDD-2X400G-FR4-P and a standard 800G DR8 module? A5: The differences are transmission distance and cabling design. The DR8 module uses parallel fiber lines over MPO connectors for distances up to 500m. The FR4-P uses internal CWDM wavelength multiplexing to push two separate 400G signals through standard Duplex LC cables over longer distances up to 2km.

Q6：Can I split this 800G module into eight independent 100G lines? Answer: No. This 800G module consists of 2x400G modules, each of which comprises four 100G PAM4 channels. These four channels are optically multiplexed on a single fiber using CWDM wavelengths, so they cannot be mechanically split into independent 100G channels. It is strictly designed as two 400G lines.

Why Network Engineers Choose HYTOPTODEVICE

HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.

• 100% MSA-compliant modules with Cisco, Huawei,Dell,Juniper, and Arista compatibility
• ISO 9001:2015 certified manufacturing facility in Shenzhen
• Average lead time of 3–5 business days with DHL/FedEx express options
• Dedicated pre-sales engineering support for custom configurations
• Actual hardware,actual switches,actual results.we publish compatibility test video,eliminate compatibility anxiety. you can watch before you buy. 
• We can provide inspection and shipping videos to make you feel as if you are right here with the product.

"We replaced 200 Cisco-branded SFPs with HYTOPTODEVICE equivalents across our spine layer — zero compatibility issues, 40% cost reduction."— Network Architect, Tier-2 ISP, Germany

Quality Certification & Compliance：

 At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final inspection, our processes ensure global compliance and reliability.

We adhere to rigorous standards for our SFP modules and network solutions:

• ISO 9001: Certified quality management and production consistency.

• CE & FCC: Fully compliant for seamless Global Market Access.

• RoHS: Committed to environmental responsibility and hazardous material control.

• Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.

Certified Quality. Global Standards. Guaranteed Performance.

Rigorous Industrial Product Testing：

   

100% 3rd Party Compatible：

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