Fiber optics and Glass fiber

Fiber optics noun - The transmission of light signals via glass fibers.

Glass fiber and fiber optics are semantically related. in light transmitted through fibers topic. In some cases you can use "Glass fiber" instead a noun phrase "Fiber optics".

Glass fiber noun - A very thin fiber made of glass that functions as a waveguide for light; used in bundles to transmit images.

Fiber optics and glass fiber are semantically related. Sometimes you can replace phrase "Fiber optics" with "Glass fiber", this phrases are similar.