Which Of The Following Statements About Fiber-Optic Cable Is Not True?

Which of the following statements about fiber-optic cable is not true?

• The speed for data transmission is faster than a coaxial or twisted pair cable.
• It is thin in weight and lighter as compared to coaxial cable or twisted pair cable.
• The security is better than coaxial cables.
• The telecommunication companies invest in the country’s fiber optics system in the past decades.

Answer: The statement which is true about the fiber-optic cable is that its server has better security than the coaxial cables.

What do you know about fiber optic cables?

The fiber optic cable in the plastic case comprises of few to hundreds of optical fibers, also called the optics cable. The data transfer in the form of the light or waves and speed is much more than any traditional cables as coaxial cables etc. Because of its structure, the electromagnetic interference does not affect the fiber optic cables, it does not cause spark because the signal is not in the form of electrons or electricity. The part of the fiber optics cable is described in the following:

1. Core: the core is present at the center of the fiber optics cable whose work is to transfer light signals which are formed from a light-emitting diode (LED). The size of the core varies from 8.3 or 9µm for single-mode but in multimode, it is 50 to 62.5µm.
2. Cladding: cladding is for reflecting the light into the core and it is located outside of the core surrounding it which makes the light waves move in the length of the fiber.
3. Primary coating: primary coating work in the absorption of the shocks, keep the excessive bending, and also reinforce the fiber core.

What are the types of fiber-optic cable?

The main types of fiber-optic cable are two which are described below:

 Multimode fiber-optic cables:

Multimode fiber-optic cable work by containing various rays at the same time with different properties at the core; eventually the light covering the shortest path move slowest. Dispersion case in multimode limits the range that’s why it is only used for less than a kilometer distance. the multimode has two core sizes one is 62.5 and the other is 50 microns.

Single-mode fiber-optic cable:

The single-mode core is less in size than multimode for about 9 microns and able to travel more than multimode up to 100km.it is used in LAN, cable TV, and many apps.

Pros and cons of fiber-optic cables

Pros:

• The length of the fiber-optic is large than copper twisted-pair cables.
• Offer larger bandwidth.
• As light travel from it then there is no electromagnetic interference.
• It offers higher security than other cables.
• It is lighter in weight while the size is thin related to other cables.

Cons:

• Fiber optic cable is made of glass then it is difficult to bend, because a lot of data may lose during it.
• Fiber optics can be damaged because of their structure.
• It is expensive because it needs a specialist who can handle it efficiently.