The application of 100G optical modules has developed with the accelerated development of industries such as the Internet, cloud computing and big data. And 100G is more and more widely used, and the demand for long distances also increases.
For long-distance transmission application scenarios, the traditional solution needs to use DWDM equipment to increase the transmission distance. The networking is complex, and additional equipment costs are required, resulting in high maintenance costs. While the use of the 100G optical module can simplify the transmission network, reduce intermediate equipment, and reduce maintenance costs.
As a professional 100g qsfp28 supplier, let us introduce to you that a 100G optical module is an optical module with a rate of 100G.
According to the different packaging methods, 100G optical modules mainly fall into three categories: CFP/CFP2/CFP4, CXP, and QSFP28. CFP/CFP2/CFP4 and CXP are the packaging methods of early 100G optical modules.
QSFP28 is the packaging method of a new generation of 100G optical modules, and now 100g QSFP28 has become the mainstream packaging of 100G optical modules.
The principle of the 100G QSFP28 optical module is similar to that of the QSFP+ optical module, they both use 4×25 Gbps to transmit 100G optical signals. And we have 100g optical modules for sale.
Since the advent of the 100G network, IEEE, the Multi-Source Agreement (MSA) Industry Alliance and other organizations have developed multiple standards for 100G optical modules.
Among the many standards, the PSM4 and CWDM4 standards formulated by the Multi-Source Agreement (MSA) industry organization are more suitable for the mainstream 100g QSFP28 optical module on the market.
The Huawei SFP compatibility matrix provides a comprehensive overview of the compatibility between Huawei optical transceivers and different network equipment, enabling users to select the appropriate SFP modules for seamless integration and optimal performance.
Optical modules have many important optoelectronic technical parameters. However, we only need to understand a few of the important parameters;
1. Center wavelength: unit nanometer (nm);
2. Transmission rate: refers to the number of bits (bit) of data transmitted per second by the 100G optical module, in bps;
3. Transmission distance: refers to the distance that an optical signal can be directly transmitted without repeater amplification, in kilometers;
There are other laser types, loss and dispersion, transmitting optical power and receiving sensitivity, optical fiber interface and operating temperature, etc. Only by understanding these can you better choose the product that suits you.
1. The CFP optical module supports full C-band wavelength adjustment and can complete link detection. It uses a common optical duobinary modulation format ODB, which is convenient for layout and consumes less than 24W.
2. The volume of the CFP2 optical module is one-half of that of the CFP, but its integration is twice that of the CFP. It can achieve stable reception sensitivity in a wide dynamic input range according to SOA, and can support a comprehensive CFP optical module, and its function consumption is less than 9W.
3. The volume of CFP4 optical module is one-half of that of CFP2, and its integration is twice that of CFP2, and the port density of the front panel is also doubled compared to CFP2.
The MSA protocol of the CFP4 optical module supports the same rate as CFP2 and CFP2s. The transmission power is significantly improved, but the power consumption is greatly reduced, which is only about half of the original, and the price is lower than that of CFP2.
In addition, the CFP4 optical module adopts the form of 4*25, and completes 100G transmission through four 25G channels, with higher transmission power and stronger stability.
4. The package style of QSFP28 optical module is smaller than that of CFP4 optical module. The power consumption of QSFP28 optical module does not exceed 3.5W when working generally, and the use of QSFP28 optical module can directly upgrade from 25G to 100G without going through 40G, and the cost is lower.
Equipment manufacturers of optical modules will encrypt their devices to varying degrees, also known as compatibility. Modules of a particular brand can only be used with devices of the same brand, and cannot be matched with other brand optical modules. Compatibility manufacturers need to conduct different compatibility adaptations on the optical modules. Whether or not they can perfectly solve compatibility issues is particularly important.