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How about the 40G QSFP+ optical module?
Knowledge Base + 2024.02.01

As the name suggests, the 40G QSFP+ optical module is a type of optical module with a data rate of 40G and packaged as QSFP+. However, with so many optical modules available in the optical communication market, how does the 40G QSFP+ optical module perform? Is it good or not?

What is a 40G optical module?

The 40G optical module is a product derived to meet the demand for higher density high-speed pluggable solutions. It features 4 independent transmit and receive optical signal channels and provides high-density and low-power 40G Ethernet connection transmission applications for data centers, high-performance computing networks, enterprise core and distribution layers, as well as telecommunications operators.

What are the characteristics of a 40G optical module?

Reasonably and effectively utilizes transmission bandwidth, with high spectral efficiency.

Effectively reduces costs compared to other metropolitan area network solutions, making it more economical.

Simplifies network architecture and reduces the number of accessories. It's worth mentioning that in metropolitan backbone network applications, its scheduling and integration are far superior to 4x10G systems, thus saving room space, reducing equipment stacking, and improving the bandwidth management and scheduling capabilities of single-node devices.

Typically, a single wavelength can handle multiple data connections, significantly enhancing the functionality of the core network and allowing better expansion of services.

What is QSFP+?

QSFP+ (Quad Small Form-factor Pluggable) optical module is a compact hot-pluggable optical module used for data communication applications. It connects network hardware to optical fiber cables and allows for a data rate of 4×10Gbit/s. The QSFP+ specification is suitable for Ethernet with various data rate options, fiber channel, InfiniBand, and SONET/SDH standards. QSFP++ optical modules are designed to carry serial connections such as SCSI, 40G Ethernet, QDR (40G), and FDR (56G) Infiniband communication standards.

Advantages of the 40G QSFP+ optical module

The 40G QSFP+ optical module can transmit data at a speed of 10Gbps per channel under the same port volume as an XFP optical module, and it simultaneously supports data transmission for four channels. Therefore, the density of the 40G QSFP+ optical module can be four times that of an XFP optical module and three times that of an SFP+ optical module.

Applications of the 40G QSFP+ optical module

There are multiple types of 40G QSFP+ optical modules, including 40GBASE-SR4, 40GBASE-LR4, 40GBASE-ER4, etc. This section will detail these three types of optical modules and their applications.

In conclusion, the 40G QSFP+ optical module can provide various high-density 40G Ethernet connections for data centers and high-performance computing networks. It is an excellent solution for multi-channel data communication and interconnection applications. Walsun provides customers with a one-stop solution for optical network devices and low-cost optical communication products through proprietary designs, supplying a range of QSFP+ optical module products.