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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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?

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For optical fibre communication, which of the following is used:a)Tim...

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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