About Huawei QSFP-DD-400G-SR4 400GBASE-SR4 Optical Transceiver Module in Bangladesh
The Huawei QSFP-DD-400G-SR4 is a high-speed 400Gbps optical transceiver designed for short-distance data center and high-performance networking applications. Using the QSFP-DD form factor and 400GBASE-SR4 optical interface, the module provides 400Gbps connectivity over multimode fiber using an MPO-12 optical connector.
The module operates at an 850nm center wavelength and supports transmission distances of up to 100 meters over compatible OM4 and OM5 multimode optical fiber. Huawei identifies the module as part number 02314RAY and specifies a 0°C to 70°C operating case temperature range. ([Huawei](https://support.huawei.com/enterprise/en/doc/EDOC1100369504/b1b8f3be/qsfp-dd-400g-sr4))
Huawei QSFP-DD-400G-SR4 Specifications & Features
| Specification | Details |
|---|
| Brand | Huawei |
| Module Name | QSFP-DD-400G-SR4 |
| Part Number | 02314RAY |
| Form Factor | QSFP-DD |
| Optical Standard | 400GBASE-SR4 |
| Transmission Rate | 400Gbps |
| Fiber Type | Multimode Fiber (MMF) |
| Wavelength | 850nm |
| Connector Type | MPO 1×12 / MPO-12 |
| Connector End Face | APC |
| Maximum Transmission Distance | 100m over OM4/OM5 |
| Operating Temperature | 0°C to 70°C |
| DDM | Supported |
| Optical Modulation | 4 × 100G PAM4 |
| Transmitter Type | VCSEL |
| Receiver Type | PIN |
Overview
The Huawei QSFP-DD-400G-SR4 is a 400Gbps short-reach multimode optical transceiver intended for high-bandwidth data center interconnects and compatible Huawei networking platforms.
It uses the QSFP-DD form factor and 400GBASE-SR4 optical standard, providing four 100Gbps optical lanes over multimode fiber. Huawei specifies an 850nm wavelength and an MPO 1×12 APC optical connector. ([Huawei](https://support.huawei.com/enterprise/en/doc/EDOC1100369504/b1b8f3be/qsfp-dd-400g-sr4))
Buy Huawei QSFP-DD-400G-SR4 400G Optical Transceiver in Bangladesh
Purchase the Huawei QSFP-DD-400G-SR4 400Gbps optical transceiver from Datacom Technologies (BD). We supply Huawei data center networking equipment, optical transceivers, switches, routers and high-speed fiber connectivity products in Bangladesh with competitive pricing and technical consultation.
Key Features
- 400Gbps high-speed optical connectivity
- QSFP-DD form factor
- 400GBASE-SR4 optical standard
- 850nm center wavelength
- Multimode fiber support
- MPO 1×12 / MPO-12 connector
- APC optical connector end face
- Up to 100m transmission over OM4 fiber
- Up to 100m transmission over OM5 fiber
- 0°C to 70°C operating case temperature
- Digital Diagnostic Monitoring supported
- 4 × 100G PAM4 optical lanes
400Gbps High-Speed Connectivity
The Huawei QSFP-DD-400G-SR4 provides a 400Gbps optical connection for modern high-bandwidth networking environments. It is designed for applications where large volumes of data must be transferred between high-speed switches, servers and data center network infrastructure.
Its 400GBASE-SR4 architecture uses four 100Gbps optical lanes, providing high-density 400GE connectivity within a compact QSFP-DD module.
400GBASE-SR4 Optical Standard
The module complies with the 400GBASE-SR4 optical configuration. Huawei specifies the QSFP-DD-400G-SR4 as a 400Gbps multimode optical module operating at 850nm. ([Huawei](https://e.huawei.com/marketingcloud/pep/asset/20000001/Material/549ed91f135241ecbe6b617b5131beee/M3T1A590N1172217725180297468/Huawei%20QSFP-DD-400G-SR4%20Optical%20Module%20Datasheet.pdf))
SR4 is intended for short-distance multimode fiber connections, making the module particularly suitable for data center rack-to-rack, switch-to-switch and other short-reach high-speed interconnects.
850nm Optical Wavelength
The QSFP-DD-400G-SR4 operates at a nominal 850nm center wavelength.
The 850nm wavelength is commonly used with multimode fiber for short-distance high-speed optical networking applications.
Multimode Fiber Connectivity
The module is designed for multimode fiber (MMF). Huawei specifies OM4 and OM5 multimode fiber as compatible media for the module. ([Huawei](https://support.huawei.com/enterprise/en/doc/EDOC1100369504/b1b8f3be/qsfp-dd-400g-sr4))
For installations requiring the full specified 100-meter reach, Huawei's documentation specifies appropriate OM4 or OM5 optical fiber and installation conditions.
Up to 100m Transmission Distance
The Huawei QSFP-DD-400G-SR4 supports transmission distances of up to 100 meters over compatible OM4 and OM5 multimode fiber.
Huawei notes that the 100m transmission distance is subject to specific conditions. Direct connection is supported, and for transmission distances greater than 50m, the optical cable's effective modal bandwidth must be at least 6000 MHz·km. ([Huawei](https://support.huawei.com/enterprise/en/doc/EDOC1100369504/b1b8f3be/qsfp-dd-400g-sr4))
MPO 1×12 Optical Connector
The QSFP-DD-400G-SR4 uses an MPO 1×12 optical connector. Huawei specifies an APC end face and MPO-12 fiber connector configuration. ([Huawei](https://support.huawei.com/enterprise/en/doc/EDOC1100369504/b1b8f3be/qsfp-dd-400g-sr4))
Proper connector type, polarity and fiber configuration are essential when installing the module. Huawei specifies a Type B polarity configuration for the compatible fiber assembly.
4 × 100G PAM4 Optical Lanes
The QSFP-DD-400G-SR4 uses four 100Gbps optical lanes to provide an aggregate 400Gbps transmission rate. Huawei's 400G optical module information identifies the SR4 module as using 4 × 100G PAM4 modulation on the optical side. ([Huawei](https://e.huawei.com/at/products/dcn-modules/intelligent-computing-scenarios-optical-module))
This architecture enables high-density 400GE connectivity while maintaining the compact QSFP-DD module form factor.
VCSEL Transmitter and PIN Receiver
Huawei's 400G optical module specifications identify the SR4 module as using a VCSEL transmitter and PIN receiver. ([Huawei](https://e.huawei.com/at/products/dcn-modules/intelligent-computing-scenarios-optical-module))
These optical components are designed for short-reach multimode fiber transmission at the module's 850nm operating wavelength.
Digital Diagnostic Monitoring
The Huawei QSFP-DD-400G-SR4 supports Digital Diagnostic Monitoring (DDM). DDM provides access to supported module operating information and optical diagnostics for network monitoring and troubleshooting. ([Huawei](https://support.huawei.com/enterprise/en/doc/EDOC1100369504/b1b8f3be/qsfp-dd-400g-sr4))
Operating Temperature
The specified operating case temperature range is 0°C to 70°C.
This operating range makes the module suitable for standard controlled data center and enterprise networking environments.
Optical Power Characteristics
| Optical Parameter | Specification |
|---|
| Center Wavelength | 850nm |
| Maximum Tx Optical Power (Average) | 4dBm |
| Minimum Tx Optical Power (Average) | -4.6dBm |
| Minimum Extinction Ratio | 2.5dB |
| Rx Sensitivity (OMA) | max (-4.6, -6.4 + TECQ) |
| Rx Overload Power (Average) | 4dBm |
| Bit Error Ratio | 2.4e-4 |
These optical characteristics are based on Huawei's official QSFP-DD-400G-SR4 specifications. :contentReference[oaicite:1]{index=1}
Data Center Applications
- 400GE data center networks
- High-speed switch-to-switch interconnects
- Data center spine-and-leaf networks
- High-performance computing infrastructure
- AI and GPU cluster networking
- Server-to-switch connectivity
- Short-distance rack-to-rack interconnects
- Enterprise data center networks
- High-bandwidth network aggregation
AI and High-Performance Computing Networks
400Gbps optical connectivity is suitable for high-bandwidth computing environments where large quantities of data must move rapidly between network devices and compute infrastructure.
The short-reach SR4 design is particularly appropriate for controlled data center environments where multimode fiber links remain within the module's specified transmission distance.
Huawei Data Center Networking
The QSFP-DD-400G-SR4 is part of Huawei's 400GE QSFP-DD optical module portfolio. Huawei lists the SR4 module alongside other 400G optical technologies including SR8, DR4 and FR4. ([Huawei](https://e.huawei.com/cn/products/dcn-modules/400g.html))
Huawei's CloudEngine documentation identifies the QSFP-DD-400G-SR4 for compatible CloudEngine 9800, 8800 and 6800 series platforms. ([Huawei](https://support.huawei.com/enterprise/en/doc/EDOC1100369504/b1b8f3be/qsfp-dd-400g-sr4))
Direct-Connection Requirement
Huawei specifies that the 100m transmission distance for this SR4 module can be achieved under specific installation conditions and that only direct connection is supported for the stated configuration.
For links longer than 50m, Huawei specifies that the optical cable's effective modal bandwidth should be at least 6000 MHz·km. ([Huawei](https://support.huawei.com/enterprise/en/doc/EDOC1100369504/b1b8f3be/qsfp-dd-400g-sr4))
Compatibility Considerations
Before purchasing the QSFP-DD-400G-SR4, verify compatibility with the target switch, network card, port configuration and software/firmware version.
- QSFP-DD compatible 400GE port
- 400GBASE-SR4 support
- Compatible MPO-12 APC fiber
- Compatible OM4 or OM5 multimode fiber
- Correct Type B polarity
- Appropriate optical link distance
- Compatible Huawei platform and software version
Huawei's documentation states that this module is supported from V300R023C10 and later versions for the referenced CloudEngine platforms. Exact support depends on the target device and software release. ([Huawei](https://support.huawei.com/enterprise/en/doc/EDOC1100369504/b1b8f3be/qsfp-dd-400g-sr4))
QSFP-DD-400G-SR4 vs 400G DR4
| Feature |
QSFP-DD-400G-SR4 |
Typical 400G DR4 |
| Transmission Rate |
400Gbps |
400Gbps |
| Fiber Type |
MMF |
SMF |
| Wavelength |
850nm |
1311nm-class |
| Connector |
MPO-12 |
MPO-12 |
| Typical Reach |
Up to 100m |
Up to 500m |
| Primary Application |
Short-reach data center links |
Longer-reach data center links |
Benefits
- 400Gbps high-speed connectivity
- Compact QSFP-DD form factor
- 400GBASE-SR4 optical technology
- 850nm multimode transmission
- Up to 100m reach over compatible OM4/OM5 fiber
- MPO-12 optical connectivity
- DDM support
- 4 × 100G PAM4 optical lanes
- Suitable for high-density data center networks
- Suitable for AI and high-performance computing infrastructure
Why Buy from Datacom Technologies (BD)?
Datacom Technologies (BD) supplies Huawei optical transceivers, data center switches, network equipment and high-speed fiber connectivity products in Bangladesh. Customers can receive competitive pricing, technical consultation, compatibility guidance and nationwide delivery.
- Call/WhatsApp: +8801748173213
- Email: sales@datacom.com.bd
- Alternative Email: datacomtechnologiesbd@gmail.com
- Office: Tropical Center, 218, Dr. Kudroti Khuda Road, New Elephant Road, Dhaka-1205, Bangladesh
Frequently Asked Questions (FAQ)
Q1: What is the Huawei QSFP-DD-400G-SR4?
The Huawei QSFP-DD-400G-SR4 is a 400Gbps 400GBASE-SR4 multimode optical transceiver in the QSFP-DD form factor.
Q2: What is the Huawei part number?
The official Huawei part number is 02314RAY. ([Huawei](https://support.huawei.com/enterprise/en/doc/EDOC1100369504/b1b8f3be/qsfp-dd-400g-sr4))
Q3: What is the transmission speed?
The module provides a 400Gbps transmission rate.
Q4: What wavelength does the SR4 module use?
It operates at an 850nm center wavelength.
Q5: What type of fiber does it use?
The QSFP-DD-400G-SR4 uses multimode fiber (MMF), including compatible OM4 and OM5 fiber.
Q6: What connector does it use?
It uses an MPO 1×12 / MPO-12 optical connector with an APC end face.
Q7: What is the maximum transmission distance?
Huawei specifies up to 100m over OM4 and OM5 multimode fiber under the specified conditions.
Q8: Does the module support DDM?
Yes. Huawei specifies Digital Diagnostic Monitoring support.
Q9: What is the operating temperature?
The specified operating case temperature is 0°C to 70°C.
Q10: Is QSFP-DD-400G-SR4 single-mode or multimode?
It is a multimode fiber (MMF) optical module.
Q11: Is QSFP-DD-400G-SR4 suitable for long-distance fiber links?
No. SR4 is designed for short-distance multimode fiber connectivity. For longer distances, Huawei offers other 400G technologies such as DR4 and FR4.
Q12: Can the module reach 100m on OM4?
Yes. Huawei specifies up to 100m on OM4 and OM5 under the required conditions. For distances above 50m, Huawei specifies an optical cable EMB of at least 6000 MHz·km. ([Huawei](https://support.huawei.com/enterprise/en/doc/EDOC1100369504/b1b8f3be/qsfp-dd-400g-sr4))
Q13: What modulation does the module use?
Huawei identifies the SR4 optical interface as using 4 × 100G PAM4.
Q14: Is QSFP-DD-400G-SR4 compatible with Huawei CloudEngine switches?
Huawei documentation lists the module for compatible CloudEngine 9800, 8800 and 6800 series platforms. Always verify the exact switch model and software version before deployment.
Q15: Where can I buy Huawei QSFP-DD-400G-SR4 in Bangladesh?
You can contact Datacom Technologies (BD) for Huawei 400G optical transceivers, data center switches and enterprise networking equipment with competitive pricing and technical support.
-750x250.png "Datacom Technologies (BD)"){kind=logo}
