Which of the following material is used to manufacture optical fiber1 pointWoodGlassSteelPlastic

The material used to manufacture optical fibers is primarily Glass.

Optical fibers, which are essential for the transmission of light signals over long distances, are typically made of glass or plastic. However, glass fibers are favored in many applications due to their higher efficiency, lower attenuation (signal loss), and greater bandwidth capabilities compared to plastic fibers. The glass used in optical fibers is usually silica-based, which offers excellent transparency to the wavelengths of light that are transmitted through the fibers. This quality enables faster and more reliable communication in telecommunications, data networking, and other applications.

So to summarize, while both glass and plastic can be used to create optical fibers, glass is the predominant material.