H3C QSFPDD800-800G-2FR4-WDM1300-DLC Compatible 800G QSFP-DD 2FR4 Optical Transceiver Module | HYTOPTODEVICE

Product Detail：
HYTOPTODEVICE 800G QSFP-DD Transceiver | H3C Compatible 2x400GBASE-FR4 Optical Transceiver Module(SMF, 1310nm, 2km, Dual Duplex LC, DOM)

      The QSFPDD800-800G-2FR4-WDM1300-DLC is a high-performance H3C compatible 800G optical transceiver module. 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 two-port module is 100% pre-programmed and verified to ensure seamless compatibility with H3C’s Comware operating system and premier high-bandwidth network hardware, including:

• H3C S12500G-AF Series Data Center Core Switches:

  • S12504G-AF / S12508G-AF / S12516G-AF (equipped with 800G high-density line cards)

• H3C S9825 / S9855 Series High-Density Switches:

  • S9825-64OD (64-port 800G high-performance fixed configurations)

• H3C CR16000 / CR19000 Core Routers:

  • High-capacity routing line cards supporting QSFP-DD800 optical interfaces.

Primary Application Scenarios of 800G QSFP-DD Optical Transceiver

• Medium-Reach Data Center Interconnect (DCI): Bridges connections spanning up to 2km between nearby facilities or data center halls, extending well beyond the 500m limitations of short-reach parallel optics.

• High-Density 400G Switch Aggregation: Enables data center operators to maximize chassis density by grouping two independent 400G upstream switches into a single physical 800G port on an H3C core switch.

• 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), eliminating the need to deploy complex multi-fiber MPO parallel cabling.

• H3C Comware-Driven Core Backbones: Tailored for the high-capacity core, distribution, and spine-leaf aggregation layers in large-scale cloud data centers and multi-tenant networks.
  
  

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  H3C QSFPDD800-800G-2FR4-WDM1300-DLC?A1:It is an 800Gbps transceiver in an QSFP -DD form factor employing a dual-port (2x400G) architecture. It features two completely independent 400Gbps FR4 logical interfaces on a single physical module.

Q2: What type of fiber connector and cabling for this 800G FR4 transceiver?A2: It operated the transmission over single-mode fiber(SMF) with a Dual Duplex LC connector.eliminating the need for expensive MPO breakout cables.

Q3: What is the maximum reach and optical wavelength specs for  QSFPDD800-800G-2FR4-WDM1300-DLC?A3: It reaches up to 2km over single-mode fiber(SMF) via dual duplex LC connector.It has 2x400G port, Each 400G port utilizes 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：

   

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