Elliott Joiner's statement is incorrect in the context you provided. A fiber optic cable, under normal operating conditions, does not emit significant electromagnetic radiation.
Fiber optic cables are designed to transmit light signals, typically in the form of infrared light, through the use of total internal reflection within the cable's core. The light signals, usually generated by lasers or light-emitting diodes (LEDs) at one end of the cable, travel through the core of the fiber optic cable without significant leakage or emission.
However, it's worth noting that no system is entirely perfect, and there might be some minor losses or imperfections in the fiber optic cable that could result in a small amount of infrared radiation being emitted. These emissions are typically very low and not significant for practical purposes.
It's also important to distinguish between intentional emissions, where a device is designed to emit electromagnetic radiation, and incidental emissions or losses that might occur due to imperfections in a system. In the case of fiber optic cables, their primary purpose is to transmit light signals rather than emit electromagnetic radiation.
In summary, while there may be minor losses or imperfections in a fiber optic cable that result in some level of infrared radiation emission, it is generally negligible and not a significant aspect of their operation.