fibre

Question 1

In the context of optical fibre, expand the acronym BFA

Answer 1

Bare Fibre Adaptor

Question 2

In the context of optical fibre, expand the acronym SC

Answer 2

Subscriber Connecter

Question 3

In the context of optical fibre, expand the acronym STPC

Answer 3

Straight Tip Physical Contact

Question 4

In the context of optical fibre, expand the acronym FCPC

Answer 4

Face Contact/Physical Contact

Question 5

In the context of optical fibre, expand the acronym LC

Answer 5

Lucent Connector

Question 6

In the context of optical fibre, expand the acronym MTRJ

Answer 6

Mechanical Transfer Registered Jack

Question 7

In the context of optical fibre, expand the acronym APC

Answer 7

Angle Physical Connector

Question 8

What is Micro Bending

Answer 8

Micro bends are caused when external pressure causes any amount of permanent damage to the core/cladding interface.

Question 9

What is Macro Bending

Answer 9

Macro Bending are caused by exceeding the bend radius of the cable

Question 10

Name 2 items/Tools you would use to prepare a Primary coated fibre for splicing

Answer 10

Eye Protection, Cinbin

Question 11

What is the main purpose of the primary coating on silica optical fibre?

Answer 11

To protect the core and the cladding

Question 12

Why is spare fibre coiled inside a patch panel/termination enclosure

Answer 12

To allow for re-termination

Question 13

What is the purpose of the v-groove of a fusion splicer?

Answer 13

To locate and hold the fibre

Question 14

Name 2 items/tools you would use to prepare a secondary coated fibre for splicing

Answer 14

Eye Protection, and Cinbin

Question 15

The class of laser being used as a light source can be determined by what?

Answer 15

the attached safety label

Question 16

Light sources are one of the hazards associated with working with fibre optics. List 2 more hazards?

Answer 16

Chemical, Explosion

Question 17

Name a type of photodiode used in fibre optics?

Answer 17

Avalanche Photo Diode

Question 18

What colour is used to identify OM1 patch cords?

Answer 18

Grey

Question 19

What colour is used to identify OM2 patch cords?

Answer 19

Orange

Question 20

What colour is used to identify OM3/4 patch cords?

Answer 20

Aqua

Question 21

What colour is used to identify OM5 Patch cords?

Answer 21

Lime

Question 22

What colour is used to identify OS1a/OS2

Answer 22

Yellow

Question 23

What colour is used to identify an APC connector

Answer 23

Green

Question 24

name 3 parts of fibre from inside to outside?

Answer 24

Core, Cladding, Primary

Question 25

For what purpose is Loose tube cable used?

Answer 25

External connection between buildings in horizontal plane.

Question 26

Give an advantage that single-mode fibre offers over multimode fibre?

Answer 26

Lower attenuation

Question 27

Chemicals is one of the hazards associated with fibre optics, list 2 safe working practises?

Answer 27

Do not inhale, do not ingest

Question 28

What is one of the drawbacks of continuity testing with VLS?

Answer 28

Does not give a loss value.

Question 29

Which part of an all-glass fibre has a variable diameter?

Answer 29

The core

Question 30

What must you check before commencing testing on fibre?

Answer 30

Ensure the fibre is not carrying live data ensure you have the correct fibre test leads

Question 31

What are the two indexes of multi-mode fibre?

Answer 31

Stepped index Graded index

Question 32

Equipment is one of the hazards associated with working with fibre optics, what is a safe working practise?

Answer 32

Equipment is PAT tested

Question 33

What is the purpose of an electro optical transducer in a fibre optic link?

Answer 33

It converts electrical signals into optical signals it is a Transmitter

Question 34

In standard single mode fibre what wavelength is the Zero Dispersion Point?

Answer 34

1310nm

Question 35

What are the operating wavelength used for transmission in MM fibre optic communications?

Answer 35

850nm and 1300nm

Question 36

What is one of the advantages of fibre optic communication over copper?

Answer 36

Wide Bandwiths

Question 37

What is propagation of light?

Answer 37

Propagation of light refers to the manner in which an electromagnetic wave transfers its energy from one point to another.

Question 38

Name on of the conditions required for Total Internal Reflection to take place?

Answer 38

The core must be DENSER than the cladding

Question 39

Depending on the refractive index of the material two main processes generally occur when light passes between boundaries from media to another, name 1?

Answer 39

Refraction

Question 40

Name on of the factors that may affect attenuation that we cant control?

Answer 40

Quality of the basic raw materials

Question 41

Name one of the factors that may affect attenuation that we can control?

Answer 41

The wavelength used

Question 42

We spoke about 4 types of dispersion in fibre optic communications, name 1?

Answer 42

Modal Dispersion (multimode fibre)

Question 43

In the context of optical fibre, expand the acronym LED?

Answer 43

Light Emitting Diode

Question 44

In the context of optical fibre, expand the acronym LASER

Answer 44

Light Amplification by the Stimulated Emission of Radiation

Question 45

In the context of optical fibre, expand the acronym VCSEL

Answer 45

Vertical Cavity Surface Emitting Laser