Q. How many parameters are usually worked upon by the measurement techniques in attenuation?

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Q. What type of light source is usually present in the cut-back method?

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Q. The device used to remove any scattered optical power from the core is __________

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Q. What is the hierarchy of the process at the receiving end of the cut-back technique?

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Q. What is the unit of measurement of the optical attenuation per unit length?

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Q. Determine the attenuation per kilometer for a fiber whose length is 2 km, output voltage is 2.1 V at a wavelength of 0.85 μm. The output voltage increases to 10.7 V when the fiber is cut-back to leave 2 metres. Determine the attenuation per km for the fiber at wavelength 0.85 μm.

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Q. ___________ are used to allow measurements at a selection of different wavelengths.

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Q. Cut-back technique is destructive.

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Q. Which technology is used by the backscatter measurement method?

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Q. ________________ measurements checks the impurity level in the manufacturing process.

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Q. _____________ may be achieved by replacing the optical fibers with thin resistance wires.

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Q. A scattering cell consists of ______ square solar cells called as Tynes cell.

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Q. ___________ removes the light propagating in the cladding.

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Q. ___________ measurements give an indication of the distortion to the optical signals as they propagate down optical fibers.

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Q. The measurement of dispersion allows the _________ of the fiber to be determined.

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Q. How many types of mechanisms are present which produce dispersion in optical fibers?

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Q. Intermodal dispersion is nonexistent in ________ fibers.

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Q. In the single mode fibers, the dominant dispersion mechanism is ____________

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Q. Devices such as ___________ are used to simulate the steady-state mode distribution.

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Q. How many domains support the measurements of fiber dispersion?

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