In the network system construction process, the optical module is an indispensable device. According to different speeds and interface types, the optical modules can be divided into different types, one of which is the electrical interface module. Do you have a detailed understanding of the difference between optical modules and electrical optical modules? May wish to understand through the introduction of Guangruntong.
What is an optical module?
The optical module is also called the optical fiber module, which is an optical device that can transmit and receive analog signals. The electrical signal is converted into an optical signal after passing through the transmitting end of the optical module, and then the optical signal is converted into an electrical signal through the receiving end to realize photoelectric conversion.
Classification and description of optical modules
Optical modules can be divided into SFP optical modules, SFP+ optical modules, QSFP+ optical modules and QSFP28 optical modules according to different packaging forms.
1. SFP optical module (Small Form-factor Pluggables): it is a small form-factor pluggable optical module, which is an upgraded version of GBIC optical module. Its volume is only 1/2 to 1/3 of GBIC optical module, and its integration is high. Greatly increase the port density of network equipment;
2. SFP+ optical module: also called SFP PLUS optical module, it is an upgraded version of SFP optical module, with higher transmission rate, and smaller volume than SFP optical module, so the deployment density in the same space is higher. SFP+ optical module has significant advantages such as high density, low power consumption, and low system construction cost. It is widely used in 10 Gigabit Ethernet communications and is one of the mainstream products of 10 Gigabit optical modules;
3. QSFP+ optical module (Quad Small Form-factor Pluggable): four-channel small form-factor pluggable optical module, with four independent full-duplex transceiver channels, supporting transmission rates from 100Mbps to 10Gbps. QSFP+ optical modules are developed for high-density applications, which are in line with the needs of high-density data centers on the market;
4. QSFP28 optical module: QSFP28 optical module is a parallel 100G optical module that provides 4 independent transmission and reception channels, each channel can provide a rate of 25Gbps, and the transmission distance can reach 100m when used with OM4 MMF fiber jumpers.
What is an electrical interface module?
Electrical port module is also called optical port to electrical port module, photoelectric conversion optical module, which is also the type of module that will be used in optical communication. It has the characteristics of low power consumption, high performance, and compact design, and is mainly used for short-distance data transmission.
Classification and description of electrical interface modules
Electrical interface modules can be divided into SFP electrical interface modules, SFP+ electrical interface modules and GBIC electrical interface modules according to different packaging types.
1. SFP electrical port module: According to the different transmission rate, it can be divided into 100M electrical port module, gigabit electrical port module and adaptive electrical port module. The adaptive electrical port module is a kind of 10/100/1000BASE three The Gigabit optical module integrated into the CMOS chip at a speed can be used for high-speed Ethernet and Gigabit Ethernet. The difference from other electrical port modules is that this electrical port module is more innovative in terms of speed and can meet a variety of needs;
2. SFP+ electrical port module: also known as 10 Gigabit electrical port module, the rate is 10G, designed for high-speed communication links, mainly used in 10 Gigabit Ethernet, and its power consumption is also very small. In addition, the SFP+ electrical interface module is the first 10G optical module that transmits through a network cable. It can be used in the SFP+ port of a switch or network card to connect to network devices with RJ45 interfaces;
3. GBIC electrical interface module: It is an electrical interface module with a package type of GBIC, the transmission rate can reach 1000Mbps, and the maximum transmission distance can reach 100m.
The difference between electrical port module and optical module
1. Different interfaces: The interface of the electrical module is RJ45, while the interface of the optical module is mainly LC duplex, and there are also LC simplex and MTP/MPO interfaces.
Different combinations: electrical modules are usually connected to various copper cables, while optical modules are usually connected to optical fiber jumpers.
2. The parameters are different: the electrical port module does not have a wavelength, while the optical module does.
3. The components are different: the electrical port module and the optical module have different components, especially the electrical port module does not have the core component of the optical module-the laser.
4. The transmission distance is different: the transmission distance of the electrical interface module is relatively short, and the farthest reaches 100m. The optical module can reach a transmission distance of 5km to 100km depending on the type of optical fiber used.