Yes, you can cut fiber optic light cables, but it requires precision and the right tools to ensure the integrity of the fiber for signal transmission. Back in the late 1980s, when fiber was new and before structured cabling for premises applications became a TIA standard, I was working to train electricians in fiber optic installation. Electricians first became aware of fiber optics because electrical utilities were early adopters. Fortunately the only thing affected is the building the contractors are working out of. They transmit data as pulses of light through strands of glass or plastic, providing high-speed internet, seamless data exchange, and efficient signal distribution. However, that doesn't mean that they are indestructible.