optical processing & optical communications: symbiosis or convergence essex corporation terry...
TRANSCRIPT
Optical Processing & Optical Communications:
Symbiosis or Convergence
Essex Corporation
Terry TurpinChief Scientist
Optical Processor/Computer?
Functions most frequently used•Fourier Transform (demultiplexing/multiplexing)•Correlation (pattern detection)•Data distribution and replication
… a machine that performs
mathematical functions with light rather than
electrons
Optical Computing History Tidbits
1940’s
Optical Optical processors processors
were used to were used to break the break the
enigma code enigma code during World during World
War IIWar II
Early Early Synthetic Synthetic Aperture Aperture
Radar Radar (SAR)(SAR)(Leigh, (Leigh,
Cutrona)Cutrona)
Optical Optical Spectrum Spectrum AnalyzersAnalyzers-Itek ATD-Itek ATD
•Search ReceiversSearch Receivers•Triple Product Triple Product
ProcessorsProcessors•Tempest Optical Tempest Optical Correlators (NSA)Correlators (NSA)
1968-1978 1975-1983
……….parallellism ………………………speed and parallelism……
1970’s
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
•Optical Computing is 50 years old•Mostly US Government Projects•Very Expensive•Component Technology – CLASSSIFIED•“Niche Technology”
•Wideband signal analysis•cryptography
HistoryHistory
•Too expensive for the Real World•Still CLASSIFIED•Built only by PhD’s•Rarity in the Real World
MythologyMythology
OpticalComputers
REALITY TODAY: Optical Processors are successful & gaining widespread use
Evolution of Communications and Processing
Bandwidth
1 bps
1 Gbps
1Mbps
1 Tbps
1840 1970 2000
electronic carriers
op
tica
l car
rier
s
•Starting with simple carrier Tx-Rx function•Carriers Groomed for greater capacity•“Grooming” becomes “Processing” as complexity grows
Digital Carrier
Processing
OpticalCarrier
Processing
Why go to Optical Processors?
• 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
AdvantagesAdvantages
Cutting Edge Elements
Materials
•Photonic Crystals
•Non-Linear Materials
•Silicon Germanium
•III-V & II-VI Materials Systems•VCELS•Optical Fiber•Optical Amplifiers
•SOA•EDFA
•Optical Correlators•Optical Signal Processors
New Components
Technology•Photon Echo•Optical Tap Delay•Solotons
Next Generation Tools
•Optical Switching
•Optical Routing
•Optical Packet Switching
•Lambda Switching
•Optical Spread Spectrum
•Free Space Beam Tracking
Commercial Applications
•More Bandwidth CapacityMore Bandwidth Capacity•FasterFaster•SimplerSimpler•CheaperCheaper•Lower Power ConsumptionLower 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
ExtremeProcessingSolutions…
Communications& Networks
RadarAnalysis
ITInfrastructure
… Through Light and Innovation
1 GHz bandwidth range Doppler
radar processor
Holographic 3-D
Synthetic Aperture
Radar
Hyperfine WDM product family•Reconfigurable ADM•All optical equalizer•All optical privacy system•All optical CDMA•Wavelength router
Multi-user detection for spread spectrum
comms
Hypothesis tester for tracking targets
Commercial Break..
Transformational Architectures and Build-Out
3D Images