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Introduction of 100G QSFP28 LR4 Optical Transceiver

The rapid development of the information age requires increasingly high network transmission speed and capacity. The 100G QSFP28 LR4 is a compact, high-performance optical module that transmits and receives data through fiber optics, providing an efficient and reliable communication transmission method in modern networks. The introduction of the 100G QSFP28 LR4 optical module has greatly promoted the progress of network information transmission.

Overview of 100G QSFP28 LR4 Optical Module

The 100G QSFP28 LR4, short for 100G Quad Small Form-Factor Pluggable 28 Long Range 4, is a four-channel optical transceiver module. This module has four channels, each capable of transmitting at a rate of 25G, combining to achieve a transmission rate of 100G. It is mainly used for medium to long distance transmission up to 10km in 100G Ethernet. The working wavelength range of this module is between 1295 and 1309, with the specific four wavelengths being: 1295.56, 1300.05, 1304.58, 1309.14. The 100G QSFP28 LR4 is an excellent solution for large data centers that require long-distance transmission.

The working principle of the 100G QSFP28 LR4 is to convert electrical signals into optical signals at the transmitting end. These optical signals are transmitted through fiber optics to another 100G QSFP28 LR4 optical module at the receiving end, which converts the optical signals back into electrical signals that the receiving end device can recognize. The 100G QSFP28 LR4 optical module is hot-pluggable, meaning it can be inserted or removed while the device is running without the need to turn off the device power, making it more flexible in use. The following table introduces the product parameters of the 100G QSFP28 LR4, allowing you to understand the specific parameters of this module more intuitively.


ModelPackageData RateWavelength
Reach(km)TX output
RX Sensitivity

Application Scenarios and Fields of 100G QSFP28 LR4


The high-end nature of the 100G QSFP28 LR4 determines its unique application scenarios and fields. Currently, the main application scenarios include 100G Ethernet links, Infiniband QDR and DDR interconnects, and customer-side 100G telecom connections. As the current domestic network layout is in the iteration from gigabit to ten gigabit, the application field of 100G optical modules is not widely present in small network application fields, but mainly concentrated in large data centers at home and abroad, telecom 5G backbone network construction and other industries that need to provide large capacity, high-speed data transmission. Of course, some 100G QSFP28 ports can also be found on the core equipment of some small network rooms, but the quantity is very small and not enough to form a scale effect.


Advantages of 100G QSFP28 LR4


The QSFP28 LR4 high-speed optical module has obvious advantages. It can reach a rate of 100G, which is one of its characteristics to meet high-speed data transmission. In addition, its transmission distance can reach 10km, which can meet the interconnection of large data centers. The compact design of the 100G QSFP28 LR4 makes it possible to achieve high-density network layout, greatly optimizing the space utilization of data center network equipment. The most important advantage is that the interface of this optical module is LC, and the cost of LC fiber optic cables is relatively low. This not only saves the overall cost, but more importantly, it can achieve the update and replacement of the optical module rate without changing the original wiring scheme.



What makes 100G QSFP28 LR4 suitable for data centers?

The QSFP28 LR4 is ideal for data centers due to its 100 Gbps high data rate, 10-kilometer transmission range, compact design for space optimization, multiplexing technology enhancing bandwidth, and advanced error correction mechanisms ensuring reliable data transmission in critical data center operations.


Can 100G QSFP28 LR4 be used for long-distance telecommunications?

Yes, the 100G QSFP28 LR4 is suitable for long-distance telecommunications with its 10-kilometer transmission range and high data rate of 100 gigabits per second (Gbps).


Is it necessary to clean a transceiver's optical connector? How to clean the QSFP28 LR4 100G transceiver?

Yes, it is necessary to clean a transceiver's optical connector, including the QSFP28 LR4 100G transceiver, to ensure optimal performance. Use a dry cleaning method with a lint-free swab or pen designed for optical cleaning. If necessary, apply optical cleaning fluid, inspect with a microscope, and follow manufacturer guidelines. Avoid touching the connector directly, implement regular cleaning, and use a connector cover when not in use to prevent contaminants. Regular maintenance is crucial for reliable data transmission.


Where can I purchase reliable 100G QSFP28 LR4 transceivers for my network setup?

WHGearlink is a reliable supplier of high-quality optical transceivers, including 100G QSFP28 LR4. They offer a range of networking solutions and their products are known for their reliability and performance.

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