An Optical Fiber Probe for the Measurement of High Temperatures

Award Information
Agency:
Department of Energy
Branch:
N/A
Amount:
$100,000.00
Award Year:
2003
Program:
SBIR
Phase:
Phase I
Contract:
DE-FG02-03ER83673
Agency Tracking Number:
72255S03-I
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Hope Technologies, Inc.
185 East Main Road, Little Compton, RI, 02837
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
N/A
Principal Investigator
 Fei Luo
 (617) 358-1036
 feiluo@bu.edu
Business Contact
 Edelgard Morse
Phone: (617) 358-1035
Email: tfmorse@bu.edu
Research Institution
N/A
Abstract
72255S03-I In the materials processing industry, melting raw materials and forming them into products involve high-temperature operations in which large amounts of energy are consumed. Sensors that work in these high-temperature industrial processing environments (which also have harsh chemicals, physical restrictions, and electromagnetic interference) will contribute significantly to minimizing waste energy and products. This project will develop a sensitive, high-temperature fiber optic probe that can withstand ultra-high processing temperatures, hostile environments, and is not subject to electromagnetic interference. In Phase I, 1/4 wave stacks (with alternating refractive indices) of high temperature oxides will be deposited on a sapphire or zirconia fiber coupled to a silica fiber. Light sent into the fiber from some large distance away will be reflected from this dielectric stack, and the shift in wavelength will be a direct measure of temperature. The probe will be tested at elevated temperatures and packaged so that a 40 cm length of sapphire fiber can be easily connected to a silica fiber. Algorithms for interpreting the optical signal and converting this into temperature have already been prepared. Commercial Applications and Other Benefits as described awardee: The new temperature measuring technique should be applicable to various industrial processes including glass melting and metal forming, as well as gas turbine temperature measurements.

* information listed above is at the time of submission.

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