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Cost-effective solution for 100G QSFP28 dual-fiber single-wavelength optical module

2024-06-25 09:45:56

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 today uses single-wavelength 100G PAM4 modulation technology, which can better reduce production costs and obtain higher transmission efficiency.

1. Comparison between traditional 100G optical modules and 100G single-wavelength optical modules

The traditional 100G optical module adopts 4x25G NRZ technology. Using four independent transmit and receive channels, 4 channels of 25Gb/s electrical data can be converted into 4 channels of LAN WDM optical signals, which are then multiplexed into one channel of 100Gb/s optical transmission. At the receiving end, the 100Gb/s optical input is demultiplexed into 4 channels of LAN WDM optical signals, which are then converted into 4 channels of electrical data output.
Cost-effective solution for 100G QSFP28 dual-fiber single-wavelength optical module(图1)
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 drives a cooled electroabsorption modulated DFB laser (EML) to convert the four-channel 25Gbps NRZ signals at the circuit end into a single-channel 53Gbps through the DSP processing of the PAM chip. This technology significantly improves the signal transmission rate and effectively reduces the number of required signal channels compared to traditional NRZ modulation technology.

Cost-effective solution for 100G QSFP28 dual-fiber single-wavelength optical module(图2)

100G single-wavelength optical modules use the more advanced PSM4 parallel transmission technology, which reduces the number of optical transmitting and receiving units from 4 to 1, which can reduce the cost by more than 40%. Since 100G single-wavelength technology uses single-channel PAM4 technology, this innovation makes it possible to upgrade 100G to 4x100G (400G optical modules).

2. 3Coptics 100G Single Wave Series Products

3Coptics 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 based on 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 commonly used in data center interconnection, 100G Ethernet, enterprise networks, and other fields.

Cost-effective solution for 100G QSFP28 dual-fiber single-wavelength optical module(图3)

As a professional platform for all-round optical network products and services, 3Coptics can provide you with stable, reliable, cost-effective, cost-saving, single-wavelength 100G QSFP28 optical modules with hermetic (or non-hermetic) packaging solutions. This article ends here. If you want to know more about the product information, you can leave a message or send a private message below the article. See you next time for more content!