It is used in applications that require transmission of multi frequency data using a single cable such as telephony or cable TV.

It is in fact one among the most recent technologies that is being use in the communication front. The superiority of the technology has been instrumental in the innovations in the filed of communication. The usage of the technology in telecommunication systems [url=http://www.cheapnflbengalsjerseys.com/nick-vigil-jersey/]Nick Vigil Jersey[/url] , data systems and cable television transmission has greatly contributed to the efficiency factor of these areas.

The scientific application and engineering of optical strands is the basic idea behind the systems. The data is transmitted in the form of light rays in the optical fiber equipments. Considering the speed of light, the speed of data transmission can be estimated. The high speed of data transmission has greatly contributed in quick and effective communication in various fields. The technology known as ‘total internal reflection’ is being used in this technology. The light signals are contained inside the core of the thread and this makes the system more efficient than the other systems. The data signals tend to diminish in other systems. This is the reason why it is used n long distance data transmission. The higher spend compared to the conventional techniques is also among the reasons for its usage in the long distance data transmission.

Structure of Optical Cables

Many different types of optical cables are used in the communication scenario now. A basic optical; cable has two layers. The center part of the strand is known as the core. There is no doubt that these types of networks will continue to shape the near future as regards the transfer of information. More and more governments, companies and educational institutions are investing in fiber optic infrastructure since it is clear that right now there is no better alternative in the field.

Introduction to Fibre Optics, theory and principle of Fibre Optics, propagation of light through fibre, Fibre Geometry, Fibre Types.

FIBRE OPTICS:

Optical Fibre is new medium, in which information (voice, Data or Video) is transmitted through a glass or plastic fibre, in the form of light, following the transmission sequence give below:

(1) Information is encoded into electrical signals.

(2) Electrical signals are converted into light signals.

(3) Light travels down the fibre.

(4) A detector changes the light signals into electrical signals.

(5) Electrical signals are decoded into information.

ADVANTAGES OF FIBRE OPTICS:

Fibre Optics has the following advantages:

Optical Fibres are non conductive (Dielectrics)

– Grounding and surge suppression not required.

– Cables can be all dielectric.

(II) Electromagnetic Immunity:

– Immune to electromagnetic interference (EMI)

– No radiated energy.

– Unauthorised tapping difficult.

(III) Large Bandwidth (> 5.0 GHz for 1 km length)

– Future upgradability.

– Maximum utilization of cable right of way.

– One time cable installation costs.

(IV) Low Loss (5 dBkm to < 0.25 dBkm typical)

– Loss is low and same at all operating speeds within the fibre’s specified bandwidth long, unrepeated links (>70km is operation).

(v) Small, Light weight cables.

– Easy installation and Handling.

– Efficient use of space.

(vi) Available in Long lengths (> 12 kms)

– Less splice points.

(vii) Security

– Extremely difficult to tap a fibre as it does not radiate energy that can be received by a nearby antenna.

– Highly secure transmission medium.

(viii) Security – Being a dielectric

– It cannot cause fire.

– Does not carry electricity.

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