With the continuous explosion of network traffic, the performance requirements for communication bandwidth and data transmission are becoming more and more stringent. 100G optical trasceiver modules are gradually replacing 40G and 10G with their higher speed and longer transmission distance, especially in long distances such as metropolitan area networks. Transmission application. At present, the 100G QSFP28 LR4 optical trasceiver module has gained a certain market share with a transmission distance of 10KM. Is it possible to extend its transmission distance to 40KM while maintaining the current network architecture to ensure its greater advantage?
The Transmission Distance of 100G QSFP28 LR4 Optical Module Can Reach 10KM
The working principle of the 100G QSFP28 LR4 optical transceiver module is to convert 4x25G electrical signals into 4 LAN WDM optical signals at the transmitting end, and then multiplex them into a single channel to realize 100G transmission. At the receiving end, the 100G optical transmission signal is demultiplexed into 4 LAN WDM optical signals, and then converted into 4 electrical signals for output.
The 100G QSFP28 LR4 optical transceiver module is generally used with LC single mode patch cords, and the maximum transmission distance can reach 10KM.
100G QSFP28 LR4 Optical Transceiver Module with SOA Optical Amplifier to Transmit 40KM
The attenuation of the 100G QSFP28 optical transceiver module occurs at the 1310nm wavelength, which is usually higher than the 1550nm frequency band. Therefore, amplifying the signal is an important requirement. The ordinary EDFA-doped ear optical amplifier cannot work because it will amplify to 1550nm and block the 1310nm signal. The SOA optical amplifier is dedicated to enhancing the signal in the optical transmission system with a wavelength of 1310nm.
The SOA optical amplifier is a compact optical amplifier. It adopts a simple plug-and-play design and can be installed in the 1U/2U/4U chassis to save space. Only need to add SOA optical amplifier to easily extend the transmission distance of 100G QSFP28 LR4 optical transceiver module to 40KM.
The SOA optical amplifier acts as a pre-amplifier in the link to enhance the input optical signal, and can provide the best solution for the transmission of 100G QSFP LR4 optical transceiver modules over a distance of 10KM. This solution is carried out on the basis of the existing network architecture. It is an economical and feasible solution to reduce the interference to the line and reduce the cost. It is also suitable for CFP, CFP2 and CFP4 optical transceiver modules.
If you have deployed a 10G DWDM system in a metropolitan area network and need to be integrated with a 100G network, then SOA optical amplifier and 100G QSFP28 LR4 optical transceiver module solutions can also meet your needs. Use a WDM wavelength division multiplexer with a 1310nm special port to multiplex the LR4 optical module with a 10G DWDM. For example, when deploying a 10G 40-channel DWDM wavelength division multiplexer with a 1310nm special port, we will get 10* at the same time 40G+100G is a 500G network, but in this case, the transmission distance will exceed 10KM and cannot reach 40KM. There are factors such as multiplexing loss.
Conclusion
Nowadays, metropolitan area networks and data center networks are transitioning to 100G. The solution of SOA optical amplifier and 100G QSFP28 LR4 optical module combination can achieve longer transmission distance cost-effectively and efficiently.
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