Stimulated Brillouin system with multiple FBG's
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United States of America Patent
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Oct 8, 2013
Grant Date -
Aug 16, 2012
app pub date -
Oct 23, 2010
filing date -
Oct 23, 2009
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Abstract
A Brillouin system for monitoring both temperature and strain includes either a single or double-ended fiber with multiple fiber Bragg gratings (FBG's) at different wavelengths and a pumped seed laser system tunable over a range substantially larger than a Brillouin shift. The FBG's are distributed along the length of the deployed fiber and serve as wavelength selectable reflectors that enable maintaining system operation even in the case of a fiber break.
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