02-04-2012, 01:19 PM
plz i want documentation o laser communication systems
02-04-2012, 01:19 PM
plz i want documentation o laser communication systems
03-04-2012, 12:07 PM
to get information about the topic "laser communication system" full report ppt and related topic refer the link bellow
https://seminarproject.net/Thread-laser-...tems--6013 https://seminarproject.net/Thread-laser-...on-systems https://seminarproject.net/Thread-free-s...ions--2019
15-05-2014, 12:30 PM
LASER COMMUNICATION SYSTEM
LASER COMMUNICATION .pdf (Size: 269.88 KB / Downloads: 83) ABSTRACT: Laser communication is one of the key area in wireless Communications. This paper includes analysis, optimization, design and system level development of signal transformation between satellites or any two sources. Which work similarly to fiber optic links, except the beam is transmitted through free space. While the transmitter and receiver must require line-of-sight conditions, they have the benefit of eliminating the need for broadcast rights and buried cables. Laser communications systems can be easily deployed since they are inexpensive, small, low power and do not require any radio interference studies. The carrier used for the transmission signal is typically generated by a laser diode. Two parallel beams are needed, one for transmission and one for reception. INTRUDUCTION: Laser Communication is one of the emerging area of wireless communication system. Due to its low noise ratio makes its one of the well suited communication medium for exchange of information. Currently laser commutation is adopted in satellite communication for space research activities and due to its efficiency on low noise ratio, inexpensive , low power and its flexibility and its resistance to the radio interferences makes laser communication as one of research area in wireless communication. In this process, this paper comprises the one such application of laser communication for information exchange between any two devices. In Laser Communication the transmitter and receiver must require a line-of-sight conditions and Laser communications systems have the benefit of eliminating the need for broadcast rights and buried cables. The carrier used for the transmission signal is typically generated by a laser diode. Two parallel beams are needed, one for transmission and one for reception. IMPLEMENTATION : The voltage variation on the solar panel is amplified by a low-voltage audio power amplifier LM386 and reproduced by a speaker. The maximum output of audio amplifier LM386 is 1 watt, while its voltage gain is 20 to 200. The circuit consists of a transmitter and a receiver. Both the transmitter and the receiver are built around IC LM386, powered by a 9V battery. Fig. 1 shows the transmitter circuit Here a laser diode (LD1) with maximum operating voltage of around 2.6V DC and maximum operating current of 45 mA is used to transmit the audio signal. The voltage divider network formed by R2, R3 and VR3 keeps the voltage as well as the current for the laser diode in the safe region. In place of the laser diode, you can also use a laser pointer. Remove the battery from the laser pointer. Extend two wires from terminals of LD1 and connect them to the battery terminals of laser pointer. The spring inside the laser pointer is the negative terminal. The output power of the laser pointer is 5 mW. Take care while working with laser, as direct exposure to the laser beam can be hazardous to your eyes. Point the laser beam to the solar panel. Potmeter VR1 (10-kilo-ohm) is used to change the level of the input audio signal. The audio input (Vin) is taken from the preamplifier output of the music system (CD player, DVD player, etc). Capacitor C2 and preset VR2 are used to vary the gain of the LM386. ADVANTAGES: ì) The advantages of laser communication is that it allows very fast communication service between two or more devices than other modes of communications. ìì) It can provide speed more than 1GBps.So it overtakes the LAN or wireless LAN comprehensively. Ììì) Laser communications systems have the benefit of eliminating the need for broadcast rights and buried cables. Ìν) Laser communications systems can be easily deployed since they are inexpensive, small, low power and do not require any radio interference studies. The carrier used for the transmission signal is typically generated by a laser diode. Two parallel beams are needed, one for transmission and one for reception. ν) The transmitting and receiving station are smaller and lighter for given range. Less overall power is required for the given distance and data rate. Higher data rate may be achieved for given distance and power output. νì) A tiny light detector may allow for superfast broadband communication over interplanetary distances. This technology advance offers the space laser communication system designer the flexibility to design very lightweight, high bandwidth, low-cost communication payloads for satellites whose launch costs are a very strong function of launch weigh. Conclusion: This is new wireless technology to transmit the data or sound signal from one section to other section through the laser beam of the system. This system is safety and without radiation. so it is not harm to living beings. The system can likely transmit data and sound much faster than the other system(like 1GB/s). because of this laser communication system became more popular system than the other system. The paper firstly analyzed the components of maritime laser communication system, the paper made some explanations on the components and functions of the servo system, |
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