Delay differences between the source wavelengths occur as the optical signal propagates along the fiber. What is this called?

Delay differences between the source wavelengths occur  as the optical signal propagates along the fiber. What is this  called?
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1 Answer

Answer :

Differential group delay t(l).
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Last Answer : 70 percent of the core diameter and 70% of the fiber NA should be filled with light.

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Last Answer : Mode coupling is the exchange of power between two modes.

A wavefront undergoes a phase change as it travels along the fiber. If the wavefront transverses the fiber twice and is reflected twice and the total phase change is equal to 1/2 p, will the wavefront disappear? If yes, why?

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When the frequency is decreased so that two quarter wavelengths are longer than the "a" (wide) dimension of the waveguide, what will happen?

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What unit is used to measure the different wavelengths of light?

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Last Answer : Angstrom unit.

What determines the range of wavelengths over which meaningful data is obtained for calculating the chromatic dispersion?

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Last Answer : The wavelength range of the optical source(s) used.

List the three basic errors that occur during fiber alignment.

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Last Answer : Fiber separation (longitudinal misalignment), lateral misalignment, and angular misalignment.