Top 150+ Solved Optical Communication MCQ Questions Answer
Q. The handheld optical power meter has a measurement accuracy of
a. 0.01 db
b. 0.25 db
c. 0.8 db
d. 1 db
Q. may be used for measurement of the absolute optical attenuation on a fiber link.
a. silicon photodiodes
b. ingaasp photodiodes
c. optical power meters
d. gyrators
Q. When considering source-to-fiber coupling efficiencies, the is an important parameter than total output power.
a. numerical aperture
b. radiance of an optical source
c. coupling efficiency
d. angular power distribution
Q. It is a device that distributes light from a main fiber into one or more branch fibers.
a. optical fiber coupler
b. optical fiber splice
c. optical fiber connector
d. optical isolator
Q. Optical fiber couplers are also called as
a. isolators
b. circulators
c. directional couplers
d. attenuators
Q. How many types of multiport optical fiber couplers are available at present?
a. two
b. one
c. four
d. three
Q. The optical power coupled from one fiber to another is limited by
a. numerical apertures of fibers
b. varying refractive index of fibers
c. angular power distribution at source
d. number of modes propagating in each fiber
Q. couplers combine the different wavelength optical signal onto the fiber or separate the different wavelength optical signal output from the fiber.
a. 3-port
b. 2*2-star
c. wdm
d. directional
Q. How many fabrication techniques are used for 3 port fiber couplers?
a. one
b. two
c. three
d. four
Q. Which is the most common method for manufacturing couplers?
a. wavelength division multiplexing
b. lateral offset method
c. semitransparent mirror method
d. fused bi-conical taper (fbt) technique
Q. How many manufacturing methods are used for producing multimode fiber star couplers?
a. two
b. one
c. three
d. five
Q. Calculate the splitting loss if a 30×30 port multimode fiber star coupler has 1 mW of optical power launched into an input port.
a. 13 db
b. 15 db
c. 14.77 db
d. 16.02 db