[nasional_list] [ppiindia] Intel promises light-speed computing
- From: rahardjo mustadjab <bapakjewel@xxxxxxxxx>
- To: apalabar@xxxxxxxxxxxxxxx, ppiindia@xxxxxxxxxxxxxxx, Niken Franks <nikenfranks@xxxxxxxxxxxxx>
- Date: Mon, 21 Feb 2005 08:56:18 +0000 (GMT)
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Intel promises light-speed computing
Chip maker claims world's first continuous wave
silicon laser
Robert Jaques, vnunet.com 18 Feb 2005
Intel has promised computing at the speed of light
after using standard silicon manufacturing processes
to create the world's first continuous wave silicon
laser.
According to the chip giant, the technology could
bring relatively inexpensive, high-quality lasers and
optical devices to mainstream use in computing,
communications and medical applications.
The breakthrough centres on using the so-called Raman
effect and silicon's crystalline structure to amplify
light as it passes through the material. When infused
with light from an external source the chip produces a
continuous, high-quality laser beam.
While Intel acknowledged that the process is "still
far from becoming a commercial product", it promised
that building lasers from standard silicon could lead
to inexpensive optical devices that move data inside
and between computers at the speed of light, ushering
in a flood of new applications for high-speed
computing.
"Fundamentally, we have demonstrated for the first
time that standard silicon can be used to build
devices that amplify light," said Dr Mario Paniccia,
director of Intel's Photonics Technology Lab.
"The use of high-quality photonic devices has been
limited because they are expensive to manufacture,
assemble and package. This research is a major step
towards bringing the benefits of low-cost,
high-bandwidth, silicon-based optical devices to the
mass market."
Intel explained that every computer already has a
power supply to drive the chips, hard disc and
peripherals, but predicted that PCs will have a supply
for powering tiny lasers, amplifiers and optical
interconnects that move terabytes of data around the
computer and across networks.
Building a Raman laser in silicon begins with etching
a waveguide, a conduit for light on a chip. Silicon is
transparent to infrared light so that when light is
directed into a waveguide it can be contained and
channelled across a chip.
Like the first laser developed in 1960, Intel
researchers used an external light source to 'pump'
light into its chip.
As light is pumped in, the natural atomic vibrations
in silicon amplify the light as it passes through the
chip. This amplification, known as the Raman effect,
is more than 10,000 times stronger in silicon than in
glass fibres.
Raman lasers and amplifiers are used today in the
telecoms industry and rely on miles of fibre to
amplify light. By using silicon, Intel said it could
achieve similar results using a silicon chip just a
few centimetres in size.
VNU Network
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