WorksheetsFOLM Unit 1 Quiz 23-24 Even
Total questions: 20
Worksheet time: 10mins
What is the core of an optical fiber made of?
a) Plastic
b) Glass or plastic
c) Metal
d) Rubber
Which of the following factors can cause signal attenuation in optical fibers?
a) Rayleigh scattering
b) Mie scattering
c) Both Rayleigh and Mie scattering
d) Neither Rayleigh nor Mie scattering
What is the typical operating wavelength range of a laser diode used in optical fiber communication?
a) Infrared (IR)
b) Ultraviolet (UV)
c) Visible
d) Microwave
Which of the following is NOT a type of optical fiber?
a) Single-mode fiber
b) Multi-mode fiber
c) Plastic fiber
d) Polarized fiber
Which of the following is an intrinsic loss in optical fibers?
a) Dispersion
b) Bending loss
c) Splicing loss
d) Absorption
What is the main cause of bending loss in optical fibers?
a) Refraction
b) Reflection
c) Dispersion
d) Microbends
What is the primary function of the cladding in an optical fiber?
a) To guide light by total internal reflection
b) To amplify the signal
c) To reduce dispersion
d) To protect the core from external damage
Which type of optical fiber is best suited for long-distance communication?
a) Single-mode fiber
b) Multi-mode fiber
c) Plastic fiber
d) Step-index fiber
Which of the following optical sources is commonly used in optical fiber communication?
a) LED (Light Emitting Diode)
b) Incandescent lamp
c) Neon lamp
d) Laser (Light Amplification by Stimulated Emission of Radiation)
What is the typical diameter range of the core in single-mode fibers?
a) 50-100 micrometers
b) 8-10 micrometers
c) 100-200 micrometers
d) 200-400 micrometers
What is the unit of attenuation in optical fibers?
a) Decibel (dB)
b) Watts (W)
c) Volts (V)
d) Hertz (Hz)
Which type of fiber has a refractive index that gradually decreases from the core to the cladding?
a) Step-index fiber
b) Multi-mode fiber
c) Graded-index fiber
d) Polarization-maintaining fiber
Calculate the numerical aperture (NA) of an optical fiber with a core refractive index of 1.50 and a cladding refractive index of 1.45.
a) 0.20
b) 0.25
c) 0.30
d) 0.35
Fiber optic sensors are commonly used in medical devices for:
a) Monitoring blood pressure
b) Measuring oxygen levels in blood
c) Detecting glucose levels
d) All of the above
What is the primary advantage of using fiber optic cables in laser surgery procedures?
a) Enhanced flexibility
b) Higher power transmission
c) Minimal tissue damage
d) Reduced cost
In laser-based dermatological treatments, fiber optics are utilized to deliver laser energy for:
a) Tattoo removal
b) Hair removal
c) Scar reduction
d) All of the above
How are optical fibers utilized in endoscopy procedures?
a) To transmit electrical signals
b) To deliver light to illuminate the internal organs
c) To extract tissue samples
d) To measure temperature variations
In endoscopic procedures, what role do optical fibers play in image transmission?
a) Transmitting digital images
b) Converting electrical signals into visual images
c) Conducting light to illuminate the camera sensor
d) Transmitting light reflected from internal organs to the eyepiece or camera
Which of the following is NOT a commonly used material for constructing semiconductor-based optical sources?
a) Gallium arsenide (GaAs)
b) Indium phosphide (InP)
c) Silicon (Si)
d) Gallium nitride (GaN)
Which optical source emits light through the process of spontaneous emission?
a) Laser diode
b) LED
c) Semiconductor optical amplifier
d) Photodetector
