The wavelength division optical module is a photoelectric converter in the optical multiplexing transmission link. It uses wavelength division multiplexing technology to combine optical signals of different wavelengths on a single optical fiber for transmission, and has the advantages of low cost.
Features of wavelength division optical modules
1. Flexible design;
2. High reliability;
3. Low power consumption;
4. Support hot swap;
5. LC duplex interface;
6. Commercial grade working temperature: 0°C-70°C, industrial grade working temperature: -40°C-85°C;
7. The maximum transmission distance can reach 130km;
8. Support digital diagnosis (DDM/DOM) function;
9. Comply with multi-protocol standards, such as SFP MSA protocol, SDH/SONET transmission standard, IEEE 802.3 Ethernet standard and RoHS-6 standard, etc.;
10. CWDM wavelength division optical module can provide 18 wavelength bands (1270nm~1610nm) wavelength;
11. The DWDM wavelength division optical module supports C-band wavelengths.
Application of Wavelength Division Optical Module
1. Fiber to the home (FTTH);
2. Campus Network;
3. data center;
4. Metropolitan Area Network;
5. local area network;
6. Ethernet (such as Fast Ethernet, Gigabit Ethernet, etc.);
7. Fibre Channel (such as 1G, 2G, etc. Fibre Channel);
8. Synchronous optical fiber network (such as SONET OC-3, OC-12 and OC-48, etc.);
9. Optical synchronous digital transmission network;
10. security system;
11. Optical transmission equipment, etc.
Classification of wavelength division optical modules
WDM optical modules can be divided into XENPAK WDM optical modules, X2 WDM optical modules, GBIC WDM optical modules, XFP WDM optical modules, SFP WDM optical modules and SFP+ WDM optical modules according to different packaging forms.
Wavelength division optical modules can be divided into (coarse wavelength division multiplexing) CWDM optical modules and (dense wavelength division multiplexing) DWDM optical modules according to different wavelength densities; CWDM optical modules use coarse wavelength division multiplexing (CWDM) technology, suitable for short Distance transmission is generally used in Gigabit Ethernet and point-to-point networks. DWDM optical modules use dense wavelength division multiplexing (DWDM) technology, which is suitable for long-distance transmission and is generally used in large-scale network environments such as metropolitan area networks and local area networks.
The difference between WDM optical module and ordinary optical module
The wavelength division optical module is a passive optical module. The optical module itself does not emit laser light. Generally, a beam of light is divided into several beams using optical planar waveguide technology, while ordinary optical modules are active optical modules. Each module has one emission and one emission. There are two receiving ports, and a laser is used in the transmitting port. In addition, the wavelength division optical module adopts the wavelength division multiplexing technology, which can effectively save the cost of optical fiber, but ordinary optical modules cannot.
Selection of WDM Optical Module
When purchasing a wavelength division optical module, you need to consider the transmission rate, transmission distance, and cost.
1. Transmission rate, according to the requirements of network bandwidth, choose a suitable package of wavelength division optical modules, for example, in Gigabit Ethernet, choose SFP wavelength division optical modules; 10G Ethernet, choose SFP+ wavelength division optical modules, and so on;
2. Transmission distance, if it is used in a large-scale network environment with a long transmission distance, choose DWDM optical module;
3. Cost, if the transmission distance is not long, considering the cost, choose CWDM optical module.