LASER RF OPTICAL LINKS FOR AOTH RADAR

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$68,979.00
Award Year:
1991
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
15322
Agency Tracking Number:
15322
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
17 Lakeside Office Park North, Avenue, Wakefield, MA, 01880
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
John Cafarella
Principal Investigator
(617) 246-0103
Business Contact:
() -
Research Institute:
n/a
Abstract
THE USE OF HIGH-GAIN ANTENNA ARRAYS FOR ADVANCED OVER-THE-HORIZON (AOTH) RADAR IS COSTLY BECAUSE OF THE LARGE PHYSICAL EXTENT OF THE ARRAYS AND BECAUSE OF THE CONSTRUCTION COSTS FOR A LARGE NUMBER OF ELEMENTS, EACH REQUIRING A RECEIVER AND POWER SOURCE. MICRILOR WAS AMONG THE FIRST TO SUGGEST THE USE OF MACH/ZEHNDER INTERFEROMETERS (MZI) FOR PASSIVE TRANSDUCTION OF ANTENNA ELECTRICAL SIGNALS TO CONVEY THESE SIGNALS TO A MORE-CONVENIENT RECEIVING SITE; THIS TECHNIQUE APPEARS PROMISING FOR A VARIETY OF ANTENNA-REMOTING APPLICATIONS. FOR REMOTING RECEIVE ELEMENTS FOR A LARGE OTH APERTURE, HOWEVER, THE USE OF DIRECT-LASER MODULATION APPEARS TO OFFER ADVANTAGES OVER THE MZI APPROACH. THE PROJECTED COST OF REMOTING RECEIVE ELEMENTS USING HIGH-DYNAMIC-RANGE LASER DIODES IS ABOUT $2K PER ELEMENT, COMPARED TO ABOUT $30K PER ELEMENT USING THE MZI APPROACH. WHILE MZI LINKS ARE THUS UNLIKELY TO PROVIDE COST SAVINGS COMPARED TO STANDARD RF CABLING, THE USE OF DIRECT-LASER MODULATION FOR CONVEYING RF SIGNALS IN AOTH COULD SAVE AN ORDER OF MAGNITUDE IN COST. THE PROPOSED PROGRAM WOULD STUDY APPLICABLE APPROACHES AND EVALUATE THE MOST-PROMISING COMMERCIAL LASER DIODE. THIS WORK COULD RESULT IN MORE-GENERAL APPLICABILITY OF COMMERCIAL PHOTONICS TECHNOLOGY TO MILITARY PROGRAMS, LOWERING COSTS AND ENSURING INDUSTRIAL SOURCES. FUTURE GOVERNMENT-SPONSORED RESEARCH IN THIS AREA WOULD ALSO CONTRIBUTE TO U.S. COMPETITIVE POSTURE.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government