Coherent light generators – Particular resonant cavity – Folded cavity
Patent
1998-02-17
2000-09-19
Lee, John D.
Coherent light generators
Particular resonant cavity
Folded cavity
385 24, 385 37, H01S 3083, G02B 634
Patent
active
061223050
ABSTRACT:
In accordance with one aspect of the invention, a ring laser configuration having a polarizer, and whose cavity loop has substantially no net dispersion, permitting mode locked pulsing of high intensity and large bandwidth. In accordance with another aspect of the invention, a system using this laser to interrogate a plurality of arrays of Bragg gratings by use of both time and wavelength division multiplexing, increasing the total number of interrogatable gratings. In accordance with a third aspect of the invention, a system for interrogating one or more fiber Bragg gratings separated from the optical source by a dispersive optical fiber. As such a grating distends responsive to some measurand, its reflection frequency changes, and the traversal time of the reflection over the dispersive fiber changes, permitting inference of the measurand.
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Dennis Michael L.
Duling, III Irl N.
Friebele E. Joseph
Kang Jin U.
Putnam Martin A.
Edelberg Barry A.
Lee John D.
The United States of America as represented by the Secretary of
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