Product Overview
The QSFP28-100G-LR4 optical transceiver module is a high-speed 100G solution designed for data center, enterprise backbone, and telecom networks. It supports the 100GBASE-LR4 standard and delivers reliable transmission over single-mode fiber (SMF) up to 10km using an LC duplex interface.
This module is fully compatible with major networking platforms including Huawei switches, providing stable performance, low power consumption, and high-density deployment capability for modern optical networks.
Key Features & Benefits
- 100G High-Speed Transmission – Complies with IEEE 100GBASE-LR4 standard
- Long Reach up to 10km over single-mode fiber (G.652)
- LC Duplex Connector for easy integration
- WDM Technology (4x25G lanes) for stable multiplexing
- Digital Diagnostic Monitoring (DDM/DOM) supported
- Low power consumption, high efficiency design
- Plug-and-play QSFP28 form factor
Technical Specifications
| Item |
Description |
| Form Factor |
QSFP28 |
| Data Rate |
100Gbps |
| Standard |
100GBASE-LR4 |
| Fiber Type |
Single-mode fiber (SMF) |
| Maximum Distance |
10km |
| Connector |
LC Duplex |
| Wavelength |
1295 / 1300 / 1304 / 1309 nm |
| Modulation |
LAN-WDM |
| TX Power |
-4.3 to +4.5 dBm |
| RX Sensitivity |
-8.6 dBm |
| Operating Temperature |
0°C to 70°C |
| DDM |
Supported |
How QSFP28 LR4 Works
The QSFP28 LR4 module transmits 100Gbps using four independent 25Gbps optical channels, each operating at a different wavelength. These signals are multiplexed into a single fiber using WDM technology.
This design allows:
- Long-distance transmission (up to 10km)
- High stability over single-mode fiber
- Efficient bandwidth utilization
Compatibility
This module is widely compatible with:
- Huawei CloudEngine series switches
- Enterprise core switches
- Data center optical networks
- Telecom transmission systems
Applications
- Data center interconnect (DCI)
- Enterprise backbone networks
- Metro Ethernet
- Cloud infrastructure
- High-speed ISP transmission links
QSFP28 LR4 vs Other 100G Modules
LR4 vs SR4 (Short Range)
- LR4: Single-mode fiber, up to 10km
- SR4: Multimode fiber, up to 100m
- LR4 is ideal for long-distance backbone links
LR4 vs CWDM4
- LR4: Higher performance, 10km reach
- CWDM4: Lower cost, up to 2km
- LR4 is preferred for carrier-grade deployments
Frequently Asked Questions
Q1: Is QSFP28-100G-LR4 compatible with Huawei switches?
Yes, this module is designed to be compatible with Huawei QSFP28 ports supporting 100GBASE-LR4 standard.
Q2: What fiber type is required?
It requires single-mode fiber (SMF G.652) with LC duplex connectors.
Q3: Can it be used for multimode fiber?
No. LR4 is designed for single-mode fiber only. For multimode, SR4 modules should be used.
Q4: What is the maximum transmission distance?
Up to 10km under standard SMF conditions.
Q5: Does it support DDM monitoring?
Yes, it supports full Digital Diagnostic Monitoring (DDM/DOM) for real-time status tracking.
Q6: What is the difference between OEM and compatible modules?
- OEM: Original brand (Huawei/Cisco)
- Compatible: Third-party tested modules with same performance but lower cost
Quality Assurance & Support
- 100% tested before shipment
- Strict compatibility verification
- Lifetime technical support
- Fast replacement for defective units
- OEM/ODM customization available
Why Choose Our QSFP28-100G-LR4 Module?
- Stable performance under high-load networks
- Fully tested for interoperability
- Cost-effective alternative to OEM modules
- Suitable for global telecom and enterprise deployments
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