High-Performance 40G SFP Module | QSFP+ 40G-ER4, LR4, SR4 Optical Transceivers for Data Centers

The 40G SFP module is a high-speed optical transceiver designed for efficient and stable 40 Gigabit Ethernet transmission. It offers multiple configurations including QSFP+ 40G-ER4, QSFP+ 40G-LR4, and QSFP+ 40G-SR4, providing flexible connectivity options for data centers, enterprise backbones, and telecom networks. With excellent reliability, energy efficiency, and easy installation, this module ensures smooth high-bandwidth data transfer in demanding network environments.

1. Structure & Design

• Form Factor: QSFP+ (Quad Small Form-factor Pluggable Plus), compliant with IEEE 802.3ba standard

• Transmission Distance:

  • QSFP+ 40G-ER4: Up to 40 km via single-mode fiber (SMF)

  • QSFP+ 40G-LR4: Up to 10 km via single-mode fiber (SMF)

  • QSFP+ 40G-SR4: Up to 150 m via multimode fiber (OM4)

• Connector Type: MPO/MTP or LC Duplex (depending on model)

• Wavelength: 850 nm (SR4), 1310 nm (LR4/ER4)

• Data Rate: 40 Gbps aggregate bandwidth

• Power Consumption: <3.5W typical, energy-efficient operation

• Hot-pluggable design for fast installation and maintenance

• Digital Diagnostic Monitoring (DDM) for real-time optical performance monitoring

2. Applications

• High-speed data center interconnects

• Cloud computing and virtualization networks

• Enterprise core and aggregation layers

• 40G Ethernet switches, routers, and servers

• Telecom and metro networks requiring long-distance transmission

3. Advantages

• Reliable 40Gbps optical transmission with low latency

• Options for short, long, and extended reach connectivity

• Compatible with major network equipment brands

• Plug-and-play QSFP+ design for simple deployment

• Energy-efficient and stable for continuous operation

• Scalable solution for upgrading from 10G to 40G networks

4. FAQs

Q1: What are the differences between QSFP+ 40G-SR4, LR4, and ER4 modules?
A1:

• SR4: Short-reach module using multimode fiber (up to 150m, OM4).

• LR4: Long-reach module using single-mode fiber (up to 10km).

• ER4: Extended-reach module using single-mode fiber (up to 40km).

Q2: Is the 40G SFP module compatible with all QSFP+ devices?
A2: Yes, it follows the QSFP+ MSA standard and works with most QSFP+ switches and routers.

Q3: Can 40G SFP modules connect to 10G ports?
A3: Not directly, but breakout cables (4x10G) can be used if supported by your equipment.

Q4: What type of fiber is required for each module?
A4:

• SR4: Multimode fiber (OM3/OM4)

• LR4 & ER4: Single-mode fiber (SMF)

Q5: Do these modules support DDM/DOM features?
A5: Yes, all models support Digital Diagnostic Monitoring, providing real-time information on optical power, voltage, and temperature.