Which type of cable is generally better in environments with high electromagnetic interference?

Fiber optic cables are generally better in environments with high electromagnetic interference (EMI) due to their fundamental design and operation. Unlike electrical cables, fiber optics transmit data using light rather than electrical signals, which makes them immune to electromagnetic interference. This characteristic allows fiber optic cables to maintain signal integrity over long distances and in environments where there may be significant electromagnetic activity, such as near heavy machinery, radio towers, or other sources of EMI.

In contrast, copper cables, coaxial cables, and even shielded twisted pair cables can be affected by EMI to varying degrees. While shielded twisted pair cables do provide some level of protection against interference through their shielding, they may not match the complete immunity that fiber optics offer. Thus, when considering environments with high levels of electromagnetic interference, fiber optic cables stand out as the most reliable option for ensuring consistent and uninterrupted data transmission.