DCN_rpj7

DCN_rpj7 - 1 NT503: Data Communication &...

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Unformatted text preview: 1 NT503: Data Communication & Networking Transmission media - 2 2 Optical fiber cable Works on internal reflection of light in fiber For data communication main components required are: Optical Source (or light source): Pulse of light indicates 1 bit and absence of light pulse indicates 0 bit It converts electrical signal to light signal Transmission medium (i.e. fiber): Light signal is transmitted over a long distance without virtually any loss in signal. Optical Detector: It generates an electrical pulse when light falls on it at the receiving end. 3 Optical Fiber cable: construction 4 Light propagation 5 Light propagation 6 Light propagation 7 Optical Fiber cable: types 8 Multi-mode (step index & graded index) Fiber In Multi-mode fiber, multiple beams from a single light source move through the fiber core in different paths. Core diameter is around 50 microns) Multi-mode step-index fiber: Density of core remains constant from center to edge....
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DCN_rpj7 - 1 NT503: Data Communication &...

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