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
Agency Tracking Number:
15322
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Micrilor Inc
17 Lakeside Office Park North, Avenue, Wakefield, MA, 01880
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
John Cafarella
Principal Investigator
(617) 246-0103
Business Contact:
() -
Research Institution:
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

US Flag An Official Website of the United States Government