In the field of high-speed data transmission, the 400G QSFP-DD LR4 10KM optical module has become a core device for data center interconnection and long-distance high-speed communication, thanks to its excellent performance. This article will comprehensively analyze key information about this optical module, covering product overview, core parameters, performance features, and application scenarios.
1. Product Overview
The 400G QSFP-DD LR4 10KM optical module is an optical communication component supporting 400Gbps high-speed transmission. Its name embodies core characteristics:
400G: Indicates support for a maximum data transmission rate of 400Gbps, meeting ultra-high-speed communication needs;
QSFP-DD: Short for Quad Small Form-factor Pluggable Double Density, a high-density packaging format that enables multi-channel data transmission in limited space;
LR4: Stands for Long Reach transmission, using 4 wavelength channels for data sending and receiving;
10KM: Means the maximum transmission distance on single-mode fiber (SMF) can reach 10 kilometers, suitable for medium and long-distance communication scenarios.
The module supports hot-swappable functionality, facilitating equipment maintenance and upgrades, and complies with multiple industry standards to ensure compatibility with devices from different manufacturers.
2. Core Technical Parameters
The following are key performance parameters of the optical module, which directly determine its transmission capability and applicable scenarios:
| Parameter Category | Details |
|---|
| Maximum Data Rate | 425Gbps (achieved through 4 channels at 106.25Gbps each, using PAM4 modulation technology) |
| Transmission Distance | 10km (based on single-mode fiber SMF) |
| Wavelength | 1310nm (adopting CWDM4 technology, realizing multi-channel parallel transmission via 4 different wavelengths) |
| Interface and Fiber | Uses LC/MPO connectors (commonly LC duplex interface), requiring only 2 fibers for transmission and reception; compatible with single-mode fiber |
| Auxiliary Functions | Supports DDM/DOM (Digital Diagnostic Monitoring) function, enabling real-time monitoring of operating status such as temperature and optical power |
| Power Supply and Consumption | Single +3.3V power supply, typical power consumption of 12W |
| Operating Temperature | 0 to +70°C, suitable for conventional equipment room environments |
| Warranty Period | 3 years, providing long-term quality assurance |
3. Performance Features
The core advantages of this optical module lie in technological innovation and standardized design, including:
High-Speed Transmission and Modulation Technology
It adopts PAM4 (4-level Pulse Amplitude Modulation) technology, with each channel achieving a transmission rate of 106.25Gbps. The total rate of 4 channels reaches 425Gbps, which is far more efficient than traditional NRZ modulation, enabling higher data density within limited bandwidth.
Long-Distance Transmission Guarantee
Relying on the low-loss characteristics of single-mode fiber, combined with CWDM4 laser transmitters and PIN receivers, it can stably transmit signals within 10km without relay equipment, reducing deployment costs.
Standardized Compatibility Design
It strictly complies with multiple industry standards, including:
400GBASE-LR4 protocol;
QSFP-DD MSA packaging specifications and CMIS management interface standards;
IEEE 802.3cu Ethernet standard;
EU Directive 2015/863/EU on environmental protection, ensuring device interoperability and compliance.
Intelligent Monitoring and Stable Operation
Integrated with DDM/DOM functions, it can real-time feedback the working status of the optical module (such as temperature, voltage, and transceiver optical power), facilitating maintenance personnel to troubleshoot faults in a timely manner. The single power supply design simplifies circuit deployment, and the low power consumption of 12W achieves a balance between high performance and energy efficiency.
4 Typical Application Scenarios
With the characteristics of high speed, long distance, and high compatibility, the optical module is widely used in the following scenarios:
400G Ethernet Construction: As a backbone transmission link, it supports ultra-high-speed local area networks and metropolitan area networks for large enterprises and operators;
Data Center Interconnection (DCI): Meets the massive data synchronization needs between different data centers within 10km, suitable for cross-room communication in cloud computing platforms and distributed storage systems;
High-Density Communication Scenarios: Through the double-density packaging of QSFP-DD, it realizes high-port density deployment in limited cabinet space, improving the overall transmission capacity of data centers.
Summary
The 400G QSFP-DD LR4 10KM optical module, with its high speed of 425Gbps, long-distance transmission capability of 10km, and standardized compatibility design, has become a core device in the new generation of high-speed optical communication. Whether for internal interconnection of data centers or long-distance communication across regions, its stable performance and flexible deployment features provide reliable transmission guarantees for the high-speed data era.
