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For optical fibre communication, which of the following is used:
  • a)
    Time division multiplexing
  • b)
    Wavelength division multiplexing
  • c)
    Frequency modulation
  • d)
    Amplitude Modulation
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
For optical fibre communication, which of the following is used:a)Time...
Wavelength Division Multiplexing
  • In fibre-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes a number of optical carrier signals onto a single optical fibre by using different wavelengths (i.e., colours) of laser light.
  •  wavelength-division multiplexing is commonly applied to an optical carrier
  • frequency-division multiplexing typically applies to a radio carrier which is described by frequency
  • The information contained in WDM and FDM is the same as frequency and wavelength are related
Time Division Multiplexing
  • Time-division multiplexing (TDM) is a method of transmitting and receiving independent signals over a common signal path by means of synchronized switches at each end of the transmission line so that each signal appears on the line only a fraction of time.
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For optical fibre communication, which of the following is used:a)Time division multiplexingb)Wavelength division multiplexingc)Frequency modulationd)Amplitude ModulationCorrect answer is option 'B'. Can you explain this answer?
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