ABSTRACT
We are currently witnessing a strong worldwide push toward bringing fiber closer to individual homes and businesses. The emerging FTTX access networks will move the bandwidth bottleneck from the first/last mile toward metropolitan and wide area networks, creating a need for efficient optical-switching mechanisms. In this article, we review the current trends in optical switching that help to improve the bandwidth efficiency, as well as to decrease the cost and power consumption of next-generation optical networks. Our review pr ....etc

[:=Read Full Message Here=:]

free download of optical communication by bakshi ....etc

[:=Read Full Message Here=:]

SATELLITE OPTICAL COMMUNICATIONS
Presented By;
P.Gangadhar Reddy
B.Vamsi Krishna
Regno: 04A41A0425
Regno: 04A41A0481


ABSTRACT
Any Communication system needs a medium to operate. Satellite communication and optical communication are two different methods of communication. Satellite communication uses a satellite as a repeater between two points that exchange information, here medium is air and information is passed as electromagnetic waves. Satellite Communi ....etc

[:=Read Full Message Here=:]

The communication needs of Earth observation satellites is steadily increasing. Within a few
years, the data rate of such satellites will exceed 1 Gbps, the angular resolution of sensors will be
less than 1 μrad, and the memory size of onboard data recorders will be beyond 1 Tbytes.
Compared to radio frequency links, optical communications in space offer various advantages
such as smaller and lighter equipment, higher data rates, limited risk of interference with other
communications systems, and the effective use of freque ....etc

[:=Read Full Message Here=:]

Optical Communications in Space

In summer 1977, ESA placed the first technological study contract in the domain of intersatellite optical links. Now, twenty years later, a major milestone has been reached with the SILEX laser terminals having been flight tested for integration with their host spacecraft. At the same time, ESA is preparing itself for a new challenge: the potential massive use of optical cross links in satellite constellations for mobile communications and global multimedia services. This is an opportune moment to look back at ....etc

[:=Read Full Message Here=:]

In summer 1977, ESA placed the first technological study contract in the domain of intersatellite optical links. Now, twenty years later, a major milestone has been reached with the SILEX laser terminals having been flight tested for integration with their host spacecraft. At the same time, ESA is preparing itself for a new challenge: the potential massive use of optical cross links in satellite constellations for mobile communications and global multimedia services. This is an opportune moment to look back at the past twenty years of ESA effor ....etc

[:=Read Full Message Here=:]

Understanding Optical Communications



Introduction

The use of light to send messages is not new. Fires were used for signaling in
biblical times, smoke signals have been used for thousands of years and flashing
lights have been used to communicate between warships at sea since the days of
Lord Nelson.
The idea of using glass fibre to carry an optical communications signal originated
with Alexander Graham Bell. However this idea had to wait some 80 years for
better glasses and low-cost electronics for ....etc

[:=Read Full Message Here=:]

In summer 1977, ESA placed the first technological study contract in the domain of intersatellite optical links. Now, twenty years later, a major milestone has been reached with the SILEX laser terminals having been flight tested for integration with their host spacecraft. At the same time, ESA is preparing itself for a new challenge: the potential massive use of optical cross links in satellite constellations for mobile communications and global multimedia services. This is an opportune moment to look back at the past twenty years of ESA effor ....etc

[:=Read Full Message Here=:]

i want detail report about this topic.also ppt presentation ....etc

[:=Read Full Message Here=:]

This article is presented by:
Tong S Lee editor
WIRELESS COMMUNICATIONS
RESEARCH TRENDS


Introduction
Peer-to-Peer Systems and Mobile Ad-hoc Networks
As shown dramatically by YouTube, the power of decentralization is irresistible. In most areas, it is only a matter of time for the decentralization model to replace the prevalent client/server model. Although the decentralization model is powerful, not every technology of decentralization i ....etc

[:=Read Full Message Here=:]