Introduction
As the demand for faster, more reliable, and higher-capacity data transmission grows, the need for next-generation optical modules becomes increasingly critical. Whether you're building a hyperscale data center, enhancing your enterprise network, or preparing for the 400G Ethernet future, a powerful and reliable transceiver solution is essential.
Meet the LINK-PP LQD-CW400-LR4C 400G QSFP-DD LR4 Transceiver — a high-performance optical module designed to meet the bandwidth and reliability demands of modern networking environments. In this post, we'll explore its technical specifications, key features, use cases, and why it’s an ideal choice for 400G deployments.
Key Takeaways
The LINK-PP LQD-CW400-LR4C transceiver sends data up to 10 kilometers. This makes it great for big networks needing long-distance links.
It can send data at speeds up to 400Gbps. This helps data centers and businesses work faster with many users and apps at once.
Digital Diagnostic Monitoring (DDM/DOM) shows how the network is working in real-time. It helps find problems early and keeps things running smoothly.
It works with big brands like Cisco and Arista. This makes it easy to add to current systems and upgrade networks.
🔍 What is the LQD-CW400-LR4C 400G QSFP-DD LR4 Transceiver?
The LINK-PP LQD-CW400-LR4C is a QSFP-DD (Quad Small Form-Factor Pluggable Double Density) optical transceiver module that supports 400 Gigabit Ethernet over single-mode fiber (SMF) up to a distance of 10 kilometers. It is fully compliant with the IEEE 802.3bs standard and the QSFP-DD Multi-Source Agreement (MSA), ensuring seamless interoperability with major networking hardware.
This module is engineered for high-performance environments and is ideal for long-reach 400G applications, such as data center interconnects (DCIs), enterprise core networks, and cloud infrastructure.
📄 Download the LQD-CW400-LR4C Datasheet:
👉 View PDF
⚙️ Technical Specifications
Let’s take a closer look at the core specifications of this powerful module:
Feature | Specification |
|---|---|
Form Factor | QSFP-DD |
Data Rate | 400Gbps |
Transmission Distance | Up to 10km over Single Mode Fiber (SMF) with FEC |
Interface Standard | 400GAUI-8, CMIS 4.0 |
Compliance | IEEE 802.3bs, QSFP-DD MSA, RoHS |
Power Supply | Single +3.3V |
Power Consumption | Maximum 9.5W |
Operating Temperature | 0°C to +70°C |
Management Interface | Two-wire serial |
✅ Key Advantages of the LQD-CW400-LR4C Optical Transceivers
1. High Bandwidth and Scalability
With 400Gbps throughput packed into a compact QSFP-DD form factor, this transceiver allows you to scale your network infrastructure without compromising on port density or rack space.
2. Compliance and Interoperability
The LQD-CW400-LR4C complies with multiple industry standards including IEEE 802.3bs, CMIS 4.0, and the QSFP-DD MSA, making it compatible with a wide range of switches, routers, and networking gear.
3. Efficient Thermal Design
Designed for energy efficiency, the module has a maximum power consumption of only 9.5W, allowing it to operate within standard thermal envelopes. This helps reduce the need for advanced cooling systems.
4. Long Reach with Low Latency
Supporting up to 10km of transmission over SMF with Forward Error Correction (FEC), the module ensures high-speed data transmission with minimal latency and signal degradation.
5. Compact Yet Powerful
QSFP-DD’s compact footprint supports high port density, allowing more bandwidth per RU (rack unit).
🌐 Key Applications
The LINK-PP LQD-CW400-LR4C is suited for several high-bandwidth, long-distance network applications, including:
400G Ethernet Backbone Links
Data Center Interconnect (DCI)
Cloud and Hyperscale Network Deployments
Infiniband Systems
Enterprise Core and Metro Networks
🔗Why Choose LINK-PP for Your 400G QSFP-DD Needs?
✅ Proven Reliability – Rigorous testing ensures 5+ years of stable operation
✅ Multi-Vendor Compatibility – Works with Cisco, Juniper, Arista, and more
✅ Custom OEM Solutions – Tailored specifications for unique deployments
✅ Global Support & Warranty – Dedicated technical assistance
🔗 Explore Product Page: LINK-PP LQD-CW400-LR4C
FAQ
Q: Is the LQD-CW400-LR4C compatible with Cisco switches?
A: Yes, it is fully compliant with QSFP-DD MSA, ensuring compatibility with Cisco and other major brands.
Q: What is the maximum power consumption?
A: ≤9.5W, optimized for energy efficiency.
Q: Does LINK-PP offer extended temperature models?
A: Yes, industrial-grade (-40°C to +85°C) versions are available upon request.
