Optical Cooling of RF systems using an All Optical Fiber Approach

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$70,000.00
Award Year:
2010
Program:
STTR
Phase:
Phase I
Contract:
N00014-10-M-0298
Award Id:
95098
Agency Tracking Number:
N10A-017-0330
Solicitation Year:
n/a
Solicitation Topic Code:
NAVY 10T017
Solicitation Number:
n/a
Small Business Information
UA Science and Technology Park, 9030 S. Rita Road, Suite #120, Tucson, AZ, 85747
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
014750785
Principal Investigator:
Dan Nguyen
Modeling Engineer
(520) 799-7419
ntdan@npphotonics.com
Business Contact:
James Fountain
Director Contract Adminis
(520) 799-7424
fountain@npphotonics.com
Research Institute:
University of Arizona
Sherry L Esham
Sponsored Projects Services
PO Box 3520
Tucson, AZ, 85722
(520) 626-6000
Nonprofit college or university
Abstract
We propose an all-fiber approach to heat removal from devices such as high-power RF amplifiers. In our approach, the cooling fiber segment, the pump fiber laser, and the optical fiber used for photon waste removal are all integrated into a single fiber configuration. NP Photonics' high efficiency thulium-doped fiber lasers are used to pump high purity thulium-doped glass fibers, which provide the cooling action on the affixed heat source. Our system has several key advantages compared to conventional bulk glass systems. Its cooling power benefits from high optical confinement in the thulium-doped fiber core. Second, heat removal and waste photon piping into the fiber occur in the same location (the cooling fiber segment), increasing the fraction of heat that can be dumped at a remote location. Fiber Bragg gratings, which are transparent to the waste photons and thus minimize fluorescence reabsorption, will be used for enhancing pump absorption. In Phase I, cooling fibers are based on germanate host glass, but in Phase II other host glasses such as ZBLAN and telluride can also be investigated. Theoretical modeling of optical cooling in our cooling fiber and thermal modeling of the entire fiber cooler will be performed in parallel with the experiments.

* 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