Transcript Optical Processing & Optical Communications: Symbiosis or

Optical Processing & Optical
Communications:
Symbiosis or Convergence
Essex Corporation
Terry Turpin
Chief Scientist
Optical Processor/Computer?
… a machine
that performs
mathematical functions
with light rather than
electrons
Functions most frequently used
•Fourier Transform
(demultiplexing/multiplexing)
•Correlation (pattern detection)
•Data distribution and replication
Optical Computing History Tidbits
……….parallellism ………………………speed and parallelism……
Optical
processors
were used to
break the
enigma code
during World
War II
1940’s
Early
Synthetic
Aperture
Radar
(SAR)
(Leigh,
Cutrona)
1970’s
Optical
Spectrum
Analyzers
-Itek ATD
1968-1978
•Search Receivers
•Triple Product
Processors
•Tempest Optical
Correlators (NSA)
1975-1983
Specific Optical Processors
Name
Date of Application
Units in Use
IFT
1975-1980 Signal Search
50
TOC
1985
50
Netzer
1980 Spread spectrum
4
Wanzer
1985 Cryptanalytic
2
Opaline
1981 Cryptanalytic
1
Washland
1984 Spread spectrum
2
Flemming
1966 Cryptanalytic
1
EW channelizer 1980 on
?
Gingerbread
1981 Signal Search
4 roofman
ImSyn
1990 Image Synthesis
6
Labyrinth
1988 Spread Spectrum
2
SWAS
1998 Astronomy
1/4
DOC
1985-1995
3
AOS
1990-today
?
History vs. Mythology
History
•Optical Computing is 50 years
old
•Mostly US Government Projects
•Very Expensive
•Component Technology –
CLASSSIFIED
•“Niche Technology”
•Wideband signal analysis
•cryptography
Optical
Computers
Mythology
•Too expensive for the
Real World
•Still CLASSIFIED
•Built only by PhD’s
•Rarity in the Real
World
REALITY TODAY: Optical Processors are
successful & gaining widespread use
Evolution of Communications
and Processing
Bandwidth
1 Tbps
•Starting with simple carrier Tx-Rx
function
•Carriers Groomed for greater capacity
•“Grooming” becomes “Processing” as
complexity grows
1 Gbps
1Mbps
1 bps
1840
Optical
Carrier
Processing
Digital
Carrier
Processing
1970
2000
Why go to Optical Processors?
Advantages
• Speed
• Reduced size and power consumption
• OEO Overhead & Cost are Excessive
(optical - electrical - optical)
• Natural Fit:
Optical Processing for Optical Communications
• Typical improvement is a factor of 50000
Cutting Edge Elements
Materials
•Photonic Crystals
•Non-Linear Materials
•Silicon Germanium
•III-V & II-VI Materials Systems
New Components
•VCELS
•Optical Fiber
•Optical Amplifiers
•SOA
•EDFA
•Optical Correlators
•Optical Signal Processors
Technology
•Photon Echo
•Optical Tap Delay
•Solotons
Next Generation Tools
Commercial Applications
•Optical Switching
•Optical Routing
•Optical Packet Switching
•Lambda Switching
•Optical Spread Spectrum
•Free Space Beam
Tracking
•More Bandwidth Capacity
•Faster
•Simpler
•Cheaper
•Lower Power Consumption
Future Optical
Communications
• Integrated optical processing will…
– Improve Performance
– Provide security
– Provide switching and routing functions
• Networks will tend to be more transparent
• Networks will operate at lower power
levels approaching the quantum limit
Ready for Prime Time?
• Government continues to invest in
compact supercomputing capability
• Many commercial applications using
supercomputing power at commercial
prices
• Telecom revolution has lowered the cost
and improved the availability of optical
components
• Telecom and computing industries are
confronting wideband signal processing
requirements
• Encryption
• Channelization
• Correlation
Where’s the Market?
• Bandwidth demand
continues to at least
double each year
• Vendor inventories
from the “overbuild”
are gone
• Network is “at
capacity” at many
exchange points
• Sales are happening
• Metro and Access
are building to
increase sales and
meet demand
Source: IDC
Commercial Break..
Multi-user detection
for spread spectrum
comms
Holographic
3-D
Synthetic
Aperture
Radar
3D Images
Communications
& Networks
Extreme
Processing
Solutions…
IT
Infrastructure
Hyperfine WDM product family
•Reconfigurable ADM
•All optical equalizer
•All optical privacy system
•All optical CDMA
•Wavelength router
Radar
Analysis
Hypothesis
tester for
tracking
targets
1 GHz bandwidth
range Doppler
radar processor
Transformational
Architectures and Build-Out
… Through Light and Innovation
[email protected]