ppt of music transmission and reception with high s n ratio using optical fiber communication
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Ppt on music transmission and reception by using fibre optic communication
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.doc   MP49.doc (Size: 126 KB / Downloads: 1)






fiber optic cable using a RS232 communication. On the transmitter side, a keyboard is connected to input data. On the side of the receiver, 16 X 2 LCD is used to display the data. Optical fibre transmission of scanned messages or information using pulses of light along the extremely fine glass fibers. Each fiber is surrounded by a sheath with a high index of refractance so that the light is reflected internally and moves along the fiber without escape. Optical fibre cables can be smaller and lighter than conventional cables using wire copper or coaxial tubes, but they can carry much more information, making them useful for transmitting large amounts of data between computers and for implementing Data-intensive television pictures or from many simultaneous telephone conversations. Optical fibers are insensitive to electromagnetic interference (from lightning, nearby electric motors and similar sources) and crosstalk of adjacent wires, and tap into them is more easily detected. To keep a signal of deterioration, optical fibres require less repeaters over a given distance than does copper wire. In addition to communications, optical fibers are starting to be used in medical procedures, cars, planes and are supposed to have many other applications
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#3

Music Transmission and Reception with high S/N Ratio using Fiber Optic Communication.
fiber optic cable using RS232 communication. On transmitter side, a keypad is interfaced to enter the data. On the receiver side, 16 X 2 LCD is used to display the data. Fiber optics transmission of digitized messages or information by light pulses along hair-thin glass fibers. Each fiber is surrounded by a cladding having a high index of refractance so that the light is internally reflected and travels the length of the fiber without escaping. Cables of optical fibers can be made smaller and lighter than conventional cables using copper wires or coaxial tubes, yet they can carry much more information, making them useful for transmitting large amounts of data between computers and for carrying data- intensive television pictures or many simultaneous phone conversations. Optical fibers are immune to electromagnetic interference (from lightning, nearby electric motors, and similar sources) and to crosstalk from adjoining wires, and tapping into them is more easily detected. To keep a signal from deteriorating, optical fibers require fewer repeaters over a given distance than does copper wire. In addition to communications, optical fibers are beginning to be used in medical procedures, automobiles, and aircraft and are expected to have many other applications.

pc to pc fiber optic communication


definition

the project report pc to pc fiber optic communication deals with data transfer from one computer to another. it uses c programming and the serial ports of the pcs. the ports are programmed in c. we use max 232 to convert rs 232 logic to ttl logic and then an optical transmitter circuit to transmit data via fiber optic cable. the optical transmitter circuit has a led which is matched as far the cable and max 232 is concerned. at the receiver we have an optical receiver circuit which receives data using a photo transistor and a max 232 again to convert ttl logic to rs 232 for the serial port at the receiving end computer. the desired baud rate can be set using the program. for transmitting data the program is executed once and whatever is present at the serial port is sent to the other computer via the fiber optic cable. at the receiver the program is executed to receive data on the serial port.

need

data transfer is the need of the hour. surely people can use internet for this. but presently it would be time consuming. one can implement data transfer using wireless medium. but then it will be a costly affair. the need, therefore, is felt for fiber optic communication which is cheaper and more suitable for the task. it is cheaper than wireless medium and is prone to lesser loss as compared to wireless medium. fiber optics has their own advantages; larger bandwidth, high speeds, only to name a few. therefore, we need to use optic fibers for the internet and lans.

scope

in the very beginning we have tried to send ascii characters between two computers. but as we proceeded further we realized that this project report can help transfer files at desired speed between two pcs. if we expand the idea a bit further, a network of pcs can be connected, like in the cable net available today. the conventional lan cables can be replaced by fiber optic cables which can provide much higher speeds and also larger information carrying capacity


components required:

1. voltage regulator 7805
2. diode in4007
3. max 232 level converter ic
4. db9 connectors
5. capacitors 1uf
6. optical fiber cable
7. ir leds
8. photo diode

description of microcontroller:

89s52: the at89s52 is a low-power, high-performance cmos 8-bit microcontroller with 8k bytes of in-system programmable flash memory. the device is manufactured using atmel.
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