basics (Mayte) Flashcards
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optical power
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8
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How low is the optical fibre attenuation?
Typical singlemode fibres halve the signal power every ___km
Typical ADSL copper wire lines halve the signal power every 250m at 1MHz carrier frequency.
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10
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what is the definition of poroelasticity
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what’s the difference between temperature accuracy and resolution
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what are the 2 types of refractive index profiles
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Light is confined inside the optical fibre thanks to _______
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22
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Knowing the s______ one can map the temperature distribution to the fibre distance
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what is modal dispersion
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what are the most common materials used in fiber optics
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what is pulse width
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•The temperature resolution degrades _____ over distance. This is caused by the \_\_\_\_\_\_\_\_\_.
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what is the equation of NA
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describe the refractive index profile for single mode and multimode fibers
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what is IOR
optical index of refraction
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What is "V number"
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what are the advantages of using graded-index fiber versus single-index fiber
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what is Modal birefringence
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what are the advantages to multimode fiber
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what is a multiplexer
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what is the effective index
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what is attenuation
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what is phase velocity
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what are the 3 types of backscattered photons
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what is Group birefringence
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what is group velocity
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Stokes and anti-Stokes signals experience _____ losses.
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what are fiber modes
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what is Δα.
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what is chromatic dispersion
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•Loss occurs because a small portion of forward propagating light is\_\_\_\_\_\_\_\_\_
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what is FIMT
fiber in metal tube
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what is cutoff
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The underlying principle of the ULTIMA DTS is ____ and \_\_\_\_\_
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•The intensity of the _____ band is temperature sensitive.
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how does the OTDR work
| (optical time domain reflectometer)
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What is NA?
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what is mode area
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what is an OTDR
optical time domain reflectometer
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what is a walkaway VSP
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what is an offset VSP
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what does RAID stand for
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what is an LAS file
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what is an SFP
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1. An APC reduces the risk of \_\_\_\_\_\_\_\_
1. An APC reduces the risk of direct light reflection
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how can you tell the differencet between the FC/PC and E2000 connectors
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