Communication, as it has always been relied and simply depended upon speed. The faster the means ! the more popular, the more effective the communication is !

Presently in the twenty-first centaury wireless networking is gaining because of speed and ease of deployment and relatively high network robustness. Modern era of optical communication originated with the invention of LASER in 1958 and fabrication of low-loss optical fiber in 1970.

http://pptpdf.net/subcategory.php?categ=unknown&categ_id=1&/Seminar%20Reports/computer_science-infor ....etc

[:=Read Full Message Here=:]

ABSTRACT In the astronomy world, there is a need for high-performance radio telescopes operating at low frequencies. Such a telescope can be realized by a large network of small dipole antennas spread over an area of about 360 square kilometers. This antenna configuration requires a multi-terabit optical network to transport and collect the massive amounts of data picked-up from the sky. Within the Retina project, we have developed an architecture for such a multi-terabit optical network. In addition, new 160 Gbit/s line rate technology has bee ....etc

[:=Read Full Message Here=:]

optimising free space optics for wireless networks seminar report and slide needed some one please help
some good electrical project reports are also welcomed ....etc

[:=Read Full Message Here=:]

Free Space Optics

Mention optical communication and most people think of fiber optics. But light travels through air for a lot less money. So it is hardly a surprise that clever entrepreneurs and technologists are borrowing many of the devices and techniques developed for fiber-optic systems and applying them to what some call fiber-free optical communication. Although it only recently, and rather suddenly, sprang into public awareness, free-space optics is not a new idea. It has roots that go back over 30 years--to the ....etc

[:=Read Full Message Here=:]

plz give me viva questions on free space optics??????????????????????????????????????????????????????????????????????????????? ....etc

[:=Read Full Message Here=:]

Abstract
Adaptive optics is a new technology which is being used now a days in ground based telescopes to remove atmospheric tremor and thus provide a clearer and brighter view of stars seen through ground based telescopes. Without using this system, the images obtained through telescopes on earth are seen to be blurred, which is caused by the turbulent mixing of air at different temperatures.
Adaptive optics in effect removes this atmospheric tremor. It brings together the latest in computers, material scien ....etc

[:=Read Full Message Here=:]

ABSTRACT
Free space optics ( FSO ) is a line-of-sight technology that currently enables optical transmission up to 2.5 Gbps of data, voice, and video communications through the air , allowing optical connectivity without deploying fiber optic cables or securing spectrum licenses. FSO system can carry full duplex data at giga bits per second rates over Metropolitan distances of a few city blocks of few kms. FSO, also known as optical wireless, overcomes this last-mile access bottleneck by sending high bitrate ....etc

[:=Read Full Message Here=:]

ABSTRACT
Free Space Optics (FSO) or Optical Wireless, refers to the transmission of modulated visible or infrared (IR) beams through the air to obtain optical communications. Like fiber, Free Space Optics (FSO) uses lasers to transmit data, but instead of enclosing the data stream in a glass fiber, it is transmitted through the air. It is a secure, cost-effective alternative to other wireless connectivity options. This form of delivering communication has a lot of compelling advantages.
Data rates comparabl ....etc

[:=Read Full Message Here=:]

Abstract:

This Project is designed to track the various positions of the sun using telescope (with the help of LDRs). The LDR senses the intensity of sunlight and sends the output to the microcontroller through ADC. The microcontroller compares the various intensities and directs the telescope to point towards the direction of sunlight having maximum intensity. The rotation of the telescope is controlled by motors .The value of the intensity of different LDRs is displayed on the LCD ....etc

[:=Read Full Message Here=:]

Free Space Optics (FSO) communications, also called Optical Wireless (OW)
Bo Rong, Yi Qian, Member, IEE, and Kejie Lu, Member, IEE
Overview

Imagine a technology that offers unsurpassed reliability and

high-speed connectivity. A technology that can be installed globally is

easy to deploy, license-free and offers a fast, high ROI. That

technology is free-space optics (FSO).

Free Space Optics (FSO) communications, also called Optical

Wireless (OW) or Infrared Laser, refers to the transmission of

modulated visible or infrared ....etc

[:=Read Full Message Here=:]