Many people don't know the difference between sfp and sfp+, so sometimes it brings unnecessary trouble. The 10G module has undergone development from 300Pin, XENPAK, X2, and XFP, and finally realized the transmission of 10G signals with the same size as SFP, which is SFP+. With its advantages of miniaturization and low cost, SFP meets the high-density requirements of equipment for optical modules. So what types of 10G SFP+ optical modules are there?

　　1. 10G SFP+ SR optical module

　　10GBase-SR is one of the Ethernet specifications. The 10G SFP+ SR optical module complies with this standard specification, and the SR in this optical module model means Short Range, which means that it works with multimode fiber. The maximum transmission distance used is 300m. In addition, the wavelength of 10G SFP+ SR optical module is 850nm, which has the advantages of low cost, low power consumption, small size and high density.

　　2. 10G SFP+ LRM optical module

　　The 10G SFP+ LRM optical module conforms to the 10GBase-LRM Ethernet specification, where LRM refers to Long Reach Multimode. 10G SFP+ LRM optical module can be used with OM1, OM2, OM3 multimode fiber, and is mainly used for FDDI network and 10G data communication, its low power consumption and excellent EMI performance can also fully comply with MSA SFF-8431 standard. In addition, the upgraded version of the 10G SFP+ LRM optical module is the SFP-10G-LRM2 optical module. This upgraded optical module has a transmission distance of up to 2km and is often used for local area network connections.

　　3. 10G SFP+ LR optical module

　　The 10G SFP+ LR optical module complies with the 10GBase-LR Ethernet specification, where LR refers to Long Range, and its transmission distance on a single-mode fiber with a wavelength of 1310nm is up to 10km, which can actually reach up to 25km. It also has the advantages of miniaturization, low power consumption, and long transmission distance.

　　4. 10G SFP+ ER optical module

　　The 10G SFP+ ER optical module conforms to the 10GBase-ER Ethernet specification, where ER means Extended Range, its wavelength is 1550nm, and the transmission distance when used with single-mode fiber can reach 40km, which is a cost-effective Very tall, ultra-long-reach optical modules that are currently favored in data centers and enterprise campuses.

　　5. 10G SFP+ ZR optical module

　　The 10G SFP+ ZR optical module conforms to the 10GBase-ZR Ethernet specification, but this specification is proprietary to Cisco. The ZR in the 10G SFP+ ZR optical module model refers to the longest distance (Ze best Range). It can be seen that the transmission distance of this optical module is very long. Such optical modules are widely used.

　　6. 10G SFP+ BIDI optical module

　　BIDI optical module is a single-fiber bidirectional optical module. This optical module has two packaging methods: SFP and SFP+. The main difference is that the rate of BIDI SFP+ optical module is 10G, and the rate of BIDI SFP optical module is 100M or Gigabit. BIDI SFP+ optical module adopts WDM technology and has two optical fiber jacks, which need to be used in pairs to ensure normal operation, but the advantage of this optical module is that it can reduce the amount of optical fiber used in network deployment, thereby greatly reducing the network. deployment cost.

　　7. 10G SFP+ CWDM optical module

　　10G SFP+ CWDM optical module is a coarse wavelength division multiplexing optical module, usually used with single-mode fiber. This optical module saves fiber resources by using CWDM technology, which can significantly improve the flexibility, economy and reliability of networking, and the power consumption of this optical module is very small, which is 12.5% of the 10G SFP+ DWDM optical module.

　　8. 10G SFP+ DWDM optical module

　　10G SFP+ DWDM optical module is a relatively rare high-speed, large-capacity dense wavelength-division multiplexing optical module in China. It is usually used with single-mode fiber, and the transmission distance is up to 80km, which is suitable for long-distance data transmission. This optical module can meet the needs of ultra-large capacity and ultra-long-distance transmission to the greatest extent, and provide a stable guarantee for multi-service operation and future network upgrade and expansion. It also supports multiple networking modes, and wavelengths can also be used between nodes. Scheduling has the advantages of easy capacity expansion, flexible service access, high bandwidth utilization, and high reliability.

　　9. 10G electrical port module

　　The 10G electrical port module is a photoelectric conversion module with an SFP+ package. The interface type is RJ45. It is usually used with a Category 6 or Category 7 network jumper. The disadvantage of this optical module is that it does not support the DOM function, and the transmission distance It is 30m because the application range is not wide enough.