Features
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 ℃ - 85 ℃;
7. The maximum transmission distance can reach 130 km;
8. Support digital diagnosis (DDM / DOM) function;
9. Conform to multi protocol standards, such as SFP MSA protocol, SDH / SONET transmission standard, IEEE 802.3 Ethernet standard and rohs-6 standard;
10. The CWDM wavelength division module can provide 18 wavelengths (1270nm ~ 1610nm);
11. DWDM wavelength division module supports C-band wavelength.
Application
1. FTTH;
2. Campus network;
3. Data center;
4. Man;
5. LAN;
6. Ethernet (such as fast Ethernet, Gigabit Ethernet, etc.);
7. Fibre channel (such as 1g, 2G, etc.);
8. Synchronous optical network (such as SONET OC-3, oc-12, OC-48, etc.);
9. Optical synchronous digital transmission network;
10. Security system;
11. Optical transmission equipment, etc.
Classification
According to the different packaging forms, the WDM can be divided into xenpak WDM, X2 WDM, GBIC WDM, XFP WDM, SFP WDM and SFP + WDM.
According to the different wavelength density, WDM can be divided into (coarse wavelength division multiplexing) CWDM optical module and (dense wavelength division multiplexing) DWDM optical module; CWDM optical module adopts coarse wavelength division multiplexing (CWDM) technology, which is suitable for short distance transmission. Generally, in Gigabit Ethernet and point-to-point network, DWDM optical module adopts dense wavelength division multiplexing (DWDM) technology, which is suitable for long-distance transmission It is used in man and LAN.
Difference between WDM and common optical module
The WDM is a passive optical module. The optical module does not emit laser. Generally, the optical plane waveguide technology is used to divide a beam of light into several beams, while the ordinary optical module belongs to the active optical module. Each module has two ports, one transmitter and one receiver, and the transmitter uses a laser. In addition, WDM technology is used in WDM, which can effectively save the cost of optical fiber, but ordinary optical module can not.
Selection of wavelength division module
The transmission rate, transmission distance and cost should be considered when choosing the WDM.
1. Transmission rate: according to the demand of network bandwidth, select the appropriate package of WDM, for example, in Gigabit Ethernet, select the SFP WDM; for 10G Ethernet, select the SFP + WDM, and so on;
2. Transmission distance: if it is used in large network environment with long transmission distance, DWDM optical module should be selected;
If CWDM is not considered, the cost of optical transmission module is long.
