Final answer:
Multimode fiber optics cables are designed to allow multiple angles of light waves to enter through the fiber's core, utilizing total internal reflection facilitated by the cladding's lower index of refraction to propagate light efficiently and minimize signal loss.
Step-by-step explanation:
The type of fiber optics cables that allow multiple angles (modes) of light waves to enter the fiberglass core is known as multimode fiber optics. These fibers utilize the principle of total internal reflection, where light rays enter the optical fiber at different angles and are reflected entirely within the core due to the lower index of refraction of the surrounding cladding compared to the core itself.
Optical fibers are made up of a core and a cladding layer. The cladding material, having a lower index of refraction than that of the core, ensures that light does not escape the core by being totally internally reflected. This occurs even when fibers are in contact with one another within a bundle, preventing light from being transmitted between fibers. The cladding, together with an additional protective layer, makes the optical fibers both flexible and durable, allowing for efficient transmission of light, thus minimizing loss of signal and ensuring that a high-quality image or data is delivered at the other end.