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Optical Fibers



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Optical fibers consists of thin stands of glass or glass like material which are so constructed that they carry light from a source at one end of the fiber to a detector at the other end.

The light sources used are either LEDs (stands for Light Emitting Diodes) or LDs (stands for Laser Diodes).

The data which are to be transmitted, firstly modulated onto the light beam using the frequency modulation techniques. The signals can then be picked up at the receiving end and then demodulated.

The bandwidth of the medium is potentially very high. For Light Emitting Diodes (LEDs), this ranges between 20Mbps and 150Mbps and higher rates are possible using Laser Diodes (LDs).

ISP uses fiber optic cable to join their networks.

The fiber optical cable consists of the following three pieces:

Types of Optical Fiber Cable

There are two type of fiber optic cable that are described in the table given below:

Type Description
Single Node Supports a segment length of upto 2 kms and bandwidth of upto 100 Mbps
Multinode Supports a segment length of upto 100 kms and bandwidth of upto 2 Gbps

Advantages of Optical Fiber Cable

Here are the list of some main advantages of using the optical fiber cables:

Disadvantages of Optical Fiber Cable

Below are list of some main disadvantages of using the optical fiber cables:


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