What is a 40GBASE-SR4 Optical Module and Why Should I Care?


40GBASE-SR4 Technology Overview

The 40GBASE-SR4 technology is one of the latest innovations in optical module. It provides a minimum of 40 Gb/s bandwidth, which is equivalent to 10 gigabytes per second, with a maximum of 400 meters in length. 40GBASE-SR4 technology is a new standard for 40G Ethernet. The standard is designed to provide a cost effective and low power consumption solution for high-speed data center applications.

The 40GBASE-SR4 technology specification was developed by the IEEE 802.3bm Task Force. It specifies the physical layer, optical module and optical connector for transmitting data at 40 Gigabit per second over a single multimode fiber optic cable with duplex LC connector using a wavelength of 850nm.

40GBASE-SR4 is a type of optical module that is used in the field of optical communication. It is mainly used to extend the distance of data transmission which is achieved by using a single wavelength laser. The 40GBASE-SR4 module has two types of ports, one port for transmitting and another port for receiving. The transmitter port transmits the signal while the receiver port receives it. 

40GBASE-SR4 Advantages

40GBASE-SR4 is the newest specification for data transmissions. It can be used in high-speed data transmission and is much faster than its predecessor, 10GBASE-SR.

The advantages of 40GBASE-SR4 are that it offers a higher bandwidth and is more scalable than its predecessor, 40GBASE-LR4, and the 40GBASE-SR4 supports both point-to-point and point-to-multipoint connections, it can be used in field upgradeable applications and the equipment is backward compatible with 10GBASE-SR. The disadvantages of 40GBASE-SR4 are that it doesn’t come with any security features and it has a higher cost than other specifications. And 40GBASE-SR4 optical modules are that there is no backplane connection, which means you will need a direct cable connection for every node on the network.

40GBASE-SR4 Applications

40GBASE-SR4 is a standard for optical fiber transmission. It transmits data at a rate of 10 Gbit/s over distances up to 300 meters. This standard is used in high-speed networking applications such as data centers, enterprise networks and metro networks.

The 40GBASE-SR4 standard uses short reach optics to enable 10 Gbit/s data rates over distances of up to 300 meters on single mode fiber optic cables. The IEEE 802.3ba specification defines the physical layer (PHY) and media access control (MAC) layers for 40GBASE-SR4 compatible devices.

The 40GBASE-SR4 application is a standard for data transmission with the use of single-mode fiber optic cables. It can transmit at a rate of 10,000 Mbit/s.

This section is about the 40GBASE-SR4 application. It is an optical fiber communications standard that provides 10,000 Mbit/s of bandwidth in both directions on single-mode fiber optic cables.


In conclusion, 40GBASE-SR4 modules are the latest in optical technology and can offer 4x the bandwidth of previous generations. They are also cost effective and offer a higher ROI than previous generations. 40GBASE-SR4 is the latest standard for 40G Ethernet. It offers a full duplex data rate of 40 Gb/s and a new connector type. QSFPTEK can provide you high quality and low price 40GBASE-SR4 optical modules. If you want to know more about 40GBASE-SR4 optical module, please contact us via sales@qsfptek.com.

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