400G SR4.2 and 100G SRBD optical modules enable the transition to 400G rates without changing existing multimode fiber. Not only can they save fiber resources, they can also simplify the process of migrating to higher speeds and protect existing fiber infrastructure. In this article, State Road introduces you to 400G SR4.2 and 100G SRBD optical modules. 400G SR4.2 Optical Module Introduction4

Currently, the mainstream 100G optical modules are QSFP28 optical modules, which include QSFP28-SR4, QSFP28-LR4, QSFP28-PSM4, and QSFP28-CWDM4.Figure:100G QSFP28 ZR4 80KMQSFP28 CWDM4 vs QSFP28 LR4The QSFP28 CWDM4 standard is mainly for the deployment of 100G links within 2km in data centers, and the interface of QSFP28 CWDM4 optical modules conforms to the duplex single-mode 2km 100G optical inter

To upgrade GPON to XGPON1 or XGSPON, the mainstream solution in the market is the external combiner solution. This program increases XGPON1/XGSPON boards, and then through the external combiner, the signals of GPON and XGPON1/XGSPON are combined in the form of WDM, and transmitted to the remote users. The principle of this program is relatively simple, but there are many drawbacks such as long upg

I. OverviewIn today's data center networks, most fiber cabling is built for 10Gbps connectivity. When data centers need to speed up from 10Gbps to 40Gbps, the question is how to achieve speed up from 10Gbps to 40Gbps at low cost. Since the cabling for 10Gbps uses two-core LC patch cables, while the cabling for 40Gbps has to use 8-core MPO patch cables. So in order to support 40Gbps connectivit

I. Recognizing SFP Optical ModuleSFP is the abbreviation of SMALL FORM PLUGGABLE, which can be simply understood as the upgraded version of GBIC. the volume of SFP module is reduced by half compared with GBIC module, and it can be configured with more than double the number of ports on the same panel. other functions of SFP module are basically the same as GBIC.Some switch vendors refer to SFP mod