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Books > Professional & Technical > Electronics & communications engineering > Electronics engineering > Applied optics > Laser technology
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High Spectral Density Optical Communication Technologies (Paperback, 2010 ed.)
Loot Price: R4,364
Discovery Miles 43 640
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High Spectral Density Optical Communication Technologies (Paperback, 2010 ed.)
Series: Optical and Fiber Communications Reports, 6
Expected to ship within 10 - 15 working days
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The growth of Internet traf?c in recent years surpassed the
prediction of one decade ago. Data stream in individual countries
already reached terabit/s level. To cope with the petabit class
demands of traf?c in coming years the communication engineers are
required to go beyond the incremental improvement of today's
technology. A most promising breakthrough would be the introduction
of modulation f- mats enabling higher spectral ef?ciency than that
of binary on-off keying scheme, virtually the global standard of
?ber-optic communication systems. In wireless communication
systems, techniques of high spectral density modulation have been
well developed, but the required techniques in optical frequency
domain are much more complicated because of the heavier ?uctuation
levels. Therefore the past trials of coherent optical
modulation/detection schemes were not successful. However, the
addition of high-speed digital signal processing technology is the
fundam- tal difference between now and two decades ago, when trials
of optical coherent communication systems were investigated very
seriously. This approach of digital coherent technology has
attracted keen interest among communication specialists, as
indicated by the rapid increase in the pioneering presentations at
the post-deadline sessions of major international conferences. For
example, 32 terabit/s transmission in a ?ber experiment based on
this technology was reported in post-deadline session of Optical
Fiber Communication Conference (OFC) 2009. The advancement of the
digital coherent technologies will inevitably affect the network
architecture in terms of the network resource management for the
new generation photonic networks, rather than will simply provide
with huge transmission capacity.
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