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40GBASE-SR4 Optical Transceiver Wiki

40GBASE-SR4 Optical Transceiver Wiki

Filed Under: Tech

40GBASE-SR4 is an important device in the optical fiber communication system, and its main function is to realize photoelectric conversion in optical fiber communication. The 40GBASE-SR4 optical module is packaged by lasers, detectors, driver chips, transimpedance amplifiers, limiting amplifiers, and other components. and its receiving circuit.

Page Contents

  • 40GBASE-SR4 Optical Transceiver Quickly Glance
  • Applications of 40GBASE-SR4
  • 40G to 40G Connection
  • 40G to 10G Connection
  • Conclusion

40GBASE-SR4 Optical Transceiver Quickly Glance

The 40GBASE-SR4 optical fiber transmission system includes a switch, QSFP+ SR4 transceiver, and optical fiber cable. The optical module, as a high-bandwidth data transmit device, is the most important part of the optical fiber communication system. The 40GBASE-SR4 optical fiber communication system has the characteristics of short-distance transmission, anti-interference, saving wiring space, and easy replacement. It is widely used in data center servers, switches, and storage networks. With the development of large-scale and large-scale data centers, optical 40GBASE-SR4 plays an increasingly important role in data center connections.

The laser and detector are the core of the 40GBASE-SR4 optical module. The laser it uses is a compound semiconductor laser, it uses a VCSEL laser, and the detector part uses a PIN. The maximum transmission distance of the 440GBASE-SR4 optical module is 150m over laser-optimized OM4 multimode fiber (100m over OM3 MMF), its working wavelength is 850nm, and it is usually used with MTP/MTO-12 Male. The 40GBASE-SR4 modules are fully compatible with IEEE 802.3ba, QSFP+ MSA, SFF-8436, SFF-8636, Infiniband 40G QDR protocol.

Applications of 40GBASE-SR4

40G to 40G Connection

The first link method is 40G to 40G connection. The following figure 1 shows how to use 40GBASE-SR4 to achieve 40G to 40G multimode transmission. By using 40GBASE-SR4 optical modules to connect two switches using multimode MTP trunk cable, this connection is the easiest way to achieve a 40G Ethernet network. When multiple devices need to be linked, we can use a 48-port 1U rack mount MTP fiber patch enclosure. A standard 1U rack mount enclosure can deploy up to four 12-port MTP fiber adapter panels via QSFP+ SR4 optical module. Meanwhile, we can make a high-density 40G transmission through this link.

40G to 10G Connection

QSFP+ SR4 optical transceiver is designed as a parallel fiber optic transceiver, it can connect to 4 fibers simultaneously and convert 40G fiber signal into a 4x10G optical signal channel. The number of optical cables at the 10G distribution end will increase. It is usually used with breakout MTP-8LC harness cables. In order to better manage the cable system, it is better to use a 1U 96-fiber enclosure, which includes four HD MTP cassettes transferring MTP front the 40G end to LC at the 10G end.

If you want to achieve higher transmit density, then you need to use a 48 Port 1U rackmount MTP fiber patch enclosure. The optical signal transmission between 40G and 10G needs to use additional MTP-8LC harness cables, which has bad conditions for higher transmission density.

40G to 10G Connection

Conclusion

With the application of cloud computing technology, traditional data centers are gradually being replaced by cloud data centers, which will spawn a large number of 40G high-speed optical module applications like 40GBASE-SR4. This article introduces the structure and application of 40GBASE-SR4, if you want to know more, you can contact QSFPTEK customer service via [email protected]. QSFPTEK provides high-density and cost-effective 40G modules including 40GBASE-SR4 optical transceivers and a series of optical modules.

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About Lena Burkut

Lena Burkut is the Content Strategy Editor, SEO Strategist, life influencer, and the owner of Bulk Quotes Now. He loves to write about love, life, and happiness.

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