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. It has become an essential component of our daily lives, providing fast and reliable communication over long. Is the SFP optical module. GBIC is an interface device that converts gigabit electrical signals into optical signals. GBIC can be hot-swapped in design. Gigabit switches designed with GBIC interface have a large market. Fiber optic cables and Ethernet cables are two of the most important data transfer cable standards there are, but with their use cases often crossing paths, and colloquialisms even meaning each name is used interchangeably at times, it's important to know the differences with Fiber Optic Cables vs.