Quiz on Optical Fibres

What type of light source is commonly used with multimode fibres?

• Incandescent bulbs

• Halogen lamps

• LEDs

• Sunlight

What role does the primary buffer coating play in an optical fibre?

• Increases bandwidth

• Conducts light through the core

• Protects the fibre from damage

• Enhances signal strength

What is the core diameter of the 62.5/125 multimode fibre?

• 9 microns

• 50 microns

• 62.5 microns

• 125 microns

How does graded index multimode fibre reduce dispersion?

• By increasing the core size

• Through variations in the composition of the core

• By using a single mode of light

• By applying a special coating on the cladding

Which component of an optical fibre traps light in the core?

• The jacket

• The primary buffer coating

• The cladding

• The strength members

What is the primary function of optical fibres?

• To conduct electrical signals

• To guide light signals

• To protect signals from moisture

• To convert light signals into sound

Which fibre type is specifically designed for short, low-speed networks?

• Monomode fibre

• Multimode fibre

• Plastic Optical Fibre (POF)

• Step index multimode fibre

What does the term "attenuation" refer to in the context of optical fibres?

• The increase in light intensity

• The speed of light in the fibre

• The reduction in signal strength

• The diameter of the fibre

What is a key characteristic of monomode fibre compared to multimode fibre?

• Larger core diameter

• Higher attenuation

• Ability to carry light in only one mode

• Lower bandwidth

What phenomenon allows the optical fibre to guide light through the core?

• Reflection

• Refraction

• Total internal reflection

• Diffraction