Optical Fibres
An optical fibre is a long thread consisting of a central core of glass or plastic of uniform refractive index.
It is surrounded by a cladding of material of refractive index less than that of the core and a protective Jacket of insulating material.
There are three types of optical fibre configuration
1. Single mode step index fibre
2. Multi mode step index fibre
3. Multi mode graded index fibre.
Applications of Optical Fibres
1. A bundle of optical fibres is called light pipe. This pipe can transmit as image. Since the pipe is flexible, it can be twisted in any desired manner. Hence it is used medical and optical examination of even the inaccessible parts of human body, e.g., in endoscopy.
2. Optical fibres are used in transmission and reception of electrical signals by coverting them first into light signals.
3. Optical fibres are used in telephone and other transmitting cables. Each fibre can carry upto 2000 telephone messages without much loss of intensity.
An optical fibre is a long thread consisting of a central core of glass or plastic of uniform refractive index.
It is surrounded by a cladding of material of refractive index less than that of the core and a protective Jacket of insulating material.
There are three types of optical fibre configuration
1. Single mode step index fibre
2. Multi mode step index fibre
3. Multi mode graded index fibre.
Applications of Optical Fibres
1. A bundle of optical fibres is called light pipe. This pipe can transmit as image. Since the pipe is flexible, it can be twisted in any desired manner. Hence it is used medical and optical examination of even the inaccessible parts of human body, e.g., in endoscopy.
2. Optical fibres are used in transmission and reception of electrical signals by coverting them first into light signals.
3. Optical fibres are used in telephone and other transmitting cables. Each fibre can carry upto 2000 telephone messages without much loss of intensity.
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