Optical isolation is a more traditional approach, which involves transmitting signals through high-speed optocouplers.
Magnetic isolation is a new solution in recent years that transmits signals through magnetic field coupling.
1. Optical isolation: The advantage is low high-frequency noise, but the disadvantage is high power consumption. Some low-power devices cannot drive the optocoupler at the TX sending end.
2. Magnetic isolation: The disadvantage is noise, while the advantages are fast speed, high frequency, good waveform, and low power consumption.