Optical Fiber Quiz

What is the critical angle of propagation in optical fibers?

• The angle at which light is completely reflected

• The angle at which light is absorbed

• The angle at which light enters the fiber

• The angle at which light exits the fiber

What does the acceptance angle refer to in optical fibers?

• The angle of light that is absorbed by the fiber

• The angle of light that can be transmitted without loss

• The minimum angle for total internal reflection

• The maximum angle at which light can enter the fiber

What is the fractional refractive index change?

• The total refractive index of the fiber

• The average refractive index of the fiber

• The difference between the core and cladding refractive indices

• The ratio of the refractive index difference to the core index

What is the numerical aperture in optical fibers?

• The diameter of the fiber core

• A measure of the light-gathering ability of the fiber

• The total internal reflection angle

• The length of the fiber

Which type of optical fiber is characterized by a single mode of light propagation?

• Multi mode graded index fiber

• Multi mode step index fiber

• Plastic optical fiber

• Single mode fiber

What is a multi mode step index fiber?

• A fiber that allows multiple light paths

• A fiber with a gradual change in refractive index

• A fiber with a solid core

• A fiber that only supports one light path

What distinguishes a multi mode graded index fiber?

• It has a uniform refractive index throughout

• It has a higher numerical aperture than single mode fibers

• The refractive index decreases gradually from the core to the cladding

• It only supports single mode propagation

What is the normalized frequency in optical fibers?

• The wavelength of light in the fiber

• The speed of light in the fiber

• The frequency of light in the fiber

• A dimensionless number that characterizes the fiber

What is the primary function of the acceptance angle?

• To assess the fiber's durability

• To measure the refractive index

• To calculate the length of the fiber

• To determine how much light can enter the fiber

What does the term 'modes of propagation' refer to?

• The types of materials used in fiber construction

• The different paths light can take through the fiber

• The methods of fiber installation

• The various applications of optical fibers