We all know that traditional 100G optical modules use 4 25G optical channels in parallel or wavelength division multiplexing for transmission. The mainstream optical modules on the market are mainly 100G SR4/CWDM4/PSM4/LR4/ZR4, etc. The 100G single-wavelength optical module we introduce to you today uses single-wavelength 100G PAM4 modulation technology, which can better reduce production costs and obtain higher transmission efficiency.
1. The difference between traditional 100G optical modules and 100G single-wavelength optical modules
The traditional 100G optical module uses 4x25G NRZ technology. Using four independent transmission and reception channels, 4 channels of 25Gb/s electrical data can be converted into 4 channels of LAN WDM optical signals, and then they are multiplexed into one channel of 100Gb/s optical transmission. At the receiving end, the 100Gb/s optical input is demultiplexed into 4-channel LAN WDM optical signals, which are then converted into 4-channel electrical data output.
In addition, traditional 100G optical modules require independent transmitting and receiving devices on each channel, which not only increases the power consumption and space occupation of the optical module, but also increases the cost. The 100G single-wavelength optical module converts the 4-channel 25Gbps NRZ signal at the circuit end into a single channel of 53Gbps through the DSP processing of the PAM chip by driving the cooled electro-absorption modulated DFB laser (EML). This technology significantly improves the signal transmission rate and effectively reduces the number of signal channels required compared to the traditional NRZ modulation technology.
The 100G single-wavelength optical module adopts the more advanced PSM4 parallel transmission technology, reducing the number of optical transmitting and receiving units from 4 to 1, which can reduce the cost by more than 40%. Since the 100G single-wavelength technology adopts the single-channel PAM4 technology, this innovation makes it feasible to upgrade 100G to 4x100G (400G optical module) smoothly.
2. FOCC 100G Single-wavelength Series Products
FOCC 100G single-wavelength optical modules currently include 100G QSFP28 DR1/FR1/LR1/ER1. They are all suitable for 100Gb/s high-speed data communication services using single-mode optical fiber. The operating wavelength is 1310nm, and the optical signal is multiplexed to the single-mode optical fiber using a duplex LC connector. This series of products is designed with dimensions, optical/electrical connections, and digital diagnostic interfaces according to the QSFP28 Multi-Source Agreement (MSA). The 100G QSFP28 optical module has a maximum transmission link of 40 kilometers on single-mode OS2 optical fiber and is usually used in data center interconnection, 100G Ethernet, enterprise networks, and other fields.
As a professional platform for all-round optical network products and services, ETU-LINK can provide you with stable, reliable, cost-effective, cost-saving, single-wavelength 100G QSFP28 optical modules with hermetic (or non-hermetic) packaging solutions. This is the end of this article. If you want to know more product information, you can leave a message or private message below the article. See you next time for more content!
