The short answer is no - RJ45 connectors are designed for electrical Ethernet signals, while fiber optics transmit light pulses through glass or plastic. However, modern networks often combine both technologies. Would like to know is it possible to use any converter between Ethernet CAT 1G/10G cable and a switch with SFP+ interface? (trying to connect some 1GbE and 10GbE RJ45 server NIC to a switch's SFP+ interface) I noticed that the "Fiber to Ethernet Converters" may help, however, it is a device not a. Most gigabit switches are equipped with both RJ45 electrical ports and SFP optical ports. Many users need to interconnect these two ports but do not know the correct method. Optical ports on switches typically accommodate optical modules for transmitting data via fiber optic cables. The principle is that the light enters the light-sparse medium from the light-dense medium, resulting in total reflection. Usually, there are several types such as SC, ST, FC, etc.
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