Apparatus and methods for launching and receiving a broad wavelength range source
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United States of America Patent
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Feb 28, 2006
Grant Date -
Aug 14, 2003
app pub date -
Nov 14, 2002
filing date -
Nov 30, 2001
priority date (Note) -
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Abstract
An apparatus and method for simultaneous detection of N gas species through laser radiation attenuation techniques is disclosed. Each of the N species has a spectral absorption band. N laser sources operate at a wavelength λN in a spectral absorption band separated by the cutoff wavelength for single-mode transmission. Each laser source corresponds to a gas species and transmits radiation through an optical fiber constructed and arranged to provide single-mode transmission with minimal power loss.
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