fibre optics Flashcards

1
Q

In fibre optics, the principle of total internal reflection means incident light will ricochet from wall to wall along the insider of the conductor when what angle has been achieved?

A

critical angle

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2
Q

Fibre optics have a core surrounded by an optical glass cladding. The core has what refractive index in relation to the cladding?

A

The same

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3
Q

A major advantage for the use of fibre optics over copper cables, is that:

A

Fibre optics have a higher capacity or bandwidth for information

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4
Q

One of the main disadvantage for the use of fibre optics over copper cables, is that:

A

Splicing and joining requires special tools and skills

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5
Q

The process used with fibre optics to maximise the bandwidth by using non-overlapping frequencies is called:

A

multiplexing

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6
Q

Speed is another advantage for the use of fibre optics. At approximately what speed does the signal travel at inside a fibre optic?

A

200,000 kilometres per second

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7
Q

An advantage of fibre optics is the speed at which the signal travels at inside the fibre. How is the signal sent down the fibre optic?

A

Light waves

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8
Q

The Southern Cross network is a 28,900 submarine cable that connects, Australia, NZ, Fiji, Hawaii and the West Coast of the USA. It incorporates repeaters, to boost the signal, every _______________. Please select the correct answer

A

40 – 70 kilometres

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9
Q

The smallest detector element that an x-ray can be captured in is the description of the term:

A

Del

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10
Q

What would be the correct term used to classify CR Computed Radiography?

A

Passive detection

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