The correct answer is False. Most of the power in an optical fiber is transmitted in the core. The cladding is a layer of material that surrounds the core and helps to protect it from damage. It also helps to confine the light to the core, which is necessary for efficient transmission.
The core is the central part of an optical fiber. It is made of a material that has a high refractive index, which means that it bends light more than other materials. This causes the light to stay inside the core and travel along the fiber.
The cladding is the layer of material that surrounds the core. It is made of a material that has a lower refractive index than the core. This causes the light to bend away from the cladding and stay inside the core.
The combination of the core and cladding allows for efficient transmission of light along the fiber. The light is confined to the core, which prevents it from escaping and being lost. The cladding protects the core from damage, which can cause the light to be scattered or lost.
In conclusion, most of the power in an optical fiber is transmitted in the core. The cladding helps to protect the core and confine the light, which is necessary for efficient transmission.