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WorksheetsQuiz 1 - Fiber Optic
Total questions: 6
Worksheet time: 14mins
Figure 1
Figure 1 shows fiber optic cable structure. Choose the CORRECT function of cladding.
Transports optical data signals
Protects glass from surface scratches and surface contaminants
Reinforce the fiber core, help absorb shock and provide extra protection against excessive cable bends
Protect the core against crushing forced and excessive tension during installation
Statement above refer the formula of index of refraction. Choose the CORRECT value of velocity of light in vacuum, c.
The speed of light in a vacuum is 300000kms-1. The speed of light in glass is 200000kms-1. Calculate the refractive index of glass by using appropriate formula.
1.50
1.49
1.33
2.40
Table 1
Table 1 shows the refractive indices, n and the critical angle, c of three transparent substances, T, U and V. Calculate the refractive index of substance V.
2.43
1.49
3.43
3.00
Choose the INCORRECT statements about the characteristics of laser diode
Concentrated in a very narrow beam spread and a narrow spectrum
Primarily used at 1310nm and 1550nm
Higher transmission rates, which can exceed 30Gbps
Cost effective
Statements above shows the characteristic of a certain laser. Match the type of laser with this characteristic
Fabry Perot Laser
Distributed Feedback Laser
Avalanche Photo Diodes
Vertical Cavity Surface-Emitting Laser
