摘要 |
<p>An intensity-based fiber optic temperature sensor having a fiber probe with a multimode transmit/receive fiber, a reflector spaced apart from the end of the fiber, and a housing affixed at its ends to the fiber probe and reflector, the housing having a larger or smaller thermal expansion coefficient than those of the fiber probe and reflector. Temperature changes cause a change in the gap distance between the fiber end and the reflector, changing the amount of reflected light coupled into the optical fiber. Temperature sensors can also have a fiber probe with two or more multimode receiving fibers surrounding a transmitting fiber. Other temperature sensors include a fiber probe with a multimode transmitting fiber, a reference multimode receiving fiber and a sensing multimode receiving fiber for reducing noise effects.</p> |
申请人 |
THE GOVERMENT OF THE UNITED STATES OF AMERICA, ASREPRESENTED BY THE SECRETARY OF THE NAVY;LAGAKOS, NICHOLAS;BUCARO, JOSEPH, A. |
发明人 |
LAGAKOS, NICHOLAS;BUCARO, JOSEPH, A. |