Designing of a 4 Bit Transmission System Using Lasers

Designing of a 4 position Transmission g everywherening body Using optical masersTitle Laser Communication SystemAbstractCommunication is a common need. But there atomic number 18 places where wired and frequency wave dialogue is not possible. Laser as a new lay down of communicating muckle communicate all over those barriers.This paper deals with designing of a 4 patch transmission organisation using Laser. This is faster and cheaper communication mean(a). Laser light has higher intensity, efficiency, as hearty as better visibility and performance quality. It provides a a good deal simpler communication ashes and reducing the complex wiring.IntroductionCommunication is an inborn part of our life. Search for new mediums of communication is an eternal search that is seen in human history. Newer forms of communication solve the constraints of traditional forms of communication. Today, communication demands more bandwidth allocation, mightiness requirement, accuracy a nd security in everywhere in everyplace. World needs sufficient mediums to communicate solving the hurdles.As a communication medium wired communication, optical fiber communication, wireless communication over radiocommunication frequency has been established so far. A new form of communication medium a bid(p) laser communication fuel bring a new era of communication technology where these communication mediums have limitations. Laser communication remains do not need wire like wired and optical also do not need pass frequency channel like RF. This communication is reliable, economic, and speedy put forward renew wireless, fiber optic communication. Laser communication is interesting and important as it can be utilise in general as well as for confidential entropy transmission even for inters building communication like in office or in a collection room. Laser is attractive in a sense that it has features like global availability, unlicensed bandwidth, non-interference with radio bands.Introducing laser communication is not that easy. In the past(a) data were converted into analog waves but the new communication form will have different way of sending data similarly laser communication converts data into laser light.Many researches have been conducted over this topic. Most of the laser communication research was done on acres station and outer space satellites. Other researches done on laser based communication are either costly or inefficient. So there remains scope and need for further research.This paper learns a system that can send data over laser circularize using a simpler and cheap circuit. Numerical data from 0-9 mapped into 4 bit binary and send over laser beam which taking as a base can send all computer data over laser. This paper did not conducted research on the laser directionality. No solution is bindn on the correct positioning of the laser beam.In the next section, related works and then Laser communication system providing components, sender and telephone receiver design, constraints and future work can be found. Finally, dent 4 summarizes contributions.2. Laser Communication SystemA laser communication system requires a sender and a Receiver. For better performance 4 laser torch is used so the system can give send and receive 4 parallel bit. These increases speeds by 4X. For demonstration occasion two vector and receiver circuit is assumption. The first transmitter and receiver coded numeric number 0-9 manually and in second transmitter and receiver used encoder and decoder.2.1 ComponentsLaser Torch A process of optical elaboration is used in laser to emit light based on the stimulated of photons. It is highly directed beam/intense light and former efficient.Resistors It restricts the flow of current. It is used to restrict excessive power from destroying the laser torch. potency Source It provides emf difference. Power source of the circuit.Buttons Enables and restrict power flow. It is us ed to represent number 0-9.LED bulb Glows when power is supplied. Used to show output.Encoder Converts decimal to binary.Decoder Converts binary to decimal.Photodiode This device provides current flow if gets knockout by a light beam. Used to detect laser beam.2.2 Transmitter DesignThe first transmitter circuit requires a 1 voltage source, buttons 0 9, 4 resistor, 5 4input OR entry, 1 2input OR gate and 4 lasers. Button 0-9 represents numeric 0-9. The input 0-9 mapped as the figure below.To score circuit for the mapped input the equation user isLaser 1 = 1 (OR) 5 (OR) 8 (OR) 0 = 1 + 5 + 8 + 0Laser 2 = 2 (OR) 6 (OR) 9 (OR) 0 = 2 + 6 + 9 + 0Laser 3 = 3 (OR) 7 (OR) 8 (OR) 9 (OR) 0 = 3 + 7 + 8 + 9 + 0Laser 4 = 4 (OR) 5 (OR) 6 (OR) 7 (OR) 8 (OR) 9 (OR) 0 = 4 + 5 + 6 + 7 + 8 + 9 + 0The constructed circuit is given below.T1The input can also be through by using an encoder. The second transmitter circuit requires 1 voltage source, 4 Resistor, 4bit encoder, buttons 0-9 and 4 lasers. The constructed circuit is given below.T22.3 Receiver DesignThe first receiver for the first transmitter requires 1 voltage source, 4 photodiode, 4 NOT gate, 4 resistor, 3 2input AND gate, 7 4input AND gate and 10 led. The input of 4 photodiode mapped into 0-9 led representing numerical 0-9 like below.To construct circuit for the mapped input the equation user is guide 1 = Laser 1 (AND) Laser 4 = 1 * 4Led 2 = Laser 2 (AND) Laser 4 = 2 * 4Led 3 = Laser 3 (AND) Laser 4 = 3 * 4Led 4 = Laser 1 (AND) Laser 2 (AND) Laser 3 (AND) Laser 4 = 1 * 2 * 3 * 4Led 5 = Laser 1 (AND) Laser 2 (AND) Laser 3 (AND) Laser 4 = 1 * 2 * 3 * 4Led 6 = Laser 1 (AND) Laser 2 (AND) Laser 3 (AND) Laser 4 = 1 * 2 * 3 * 4Led 7 = Laser 1 (AND) Laser 2 (AND) Laser 3 (AND) Laser 4 = 1 * 2 * 3 * 4Led 8 = Laser 1 (AND) Laser 2 (AND) Laser 3 (AND) Laser 4 = 1 * 2 * 3 * 4Led 9 = Laser 1 (AND) Laser 2 (AND) Laser 3 (AND) Laser 4 = 1 * 2 * 3 * 4Led 0 = Laser 1 (AND) Laser 2 (AND) Laser 3 (AND) Laser 4 = 1 * 2 * 3 * 4The constru cted circuit is given below.R1The second receiver 2nd transmitter circuit requires 1 voltage source, 4 photodiode, 10bit decoder, 10 resistor and 10 led.The constructed circuit is given below.R22.4 ConstraintsThe factors such as beam dispersion, background light, shadowing, rain, fog, snow, pollution, smog causes an attenuated received signal and lead to higher bit shift rates. For endless distance communication high power laser is demand which is costly. The laser and photodiode position have to be correct which gets difficult with longer distance.2.5 Future workTo provided data computer or any pain device is a remarkable source. Microcontroller will make it more sophisticated. 4 bit data transfer through 4 lasers with TDM (Time Division Multiplexing) can give a super speed and reliability. Improved design of this system can be used to transmit confidential data over long distance with more powered lasers.3. Related work4. shoemakers lastWe explored the use of light based car riers for transfer of information. This paper emphasis on the study of laser as a communication medium. Upon study a newer form of communication medium like wireless, optical fiber etc can be established.Laser Torch Based Transmission and answer are cheaper and simpler in construction. Blue-Tooth can also be used for transmission and Reception purpose, but its range is small compared with their price.5. References