Title:
APPARATUS AND METHODS FOR LAUNCHING AND RECEIVING A BROAD WAVELENGTH RANGE SOURCE
Document Type and Number:
WIPO Patent Application WO2003046522
Kind Code:
A3
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 lambdan 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 wit minimal power loss.
Inventors:
VON DRASEK WILLIAM A
SONNENFROH DAVID
ALLEN MARK G
STAFFORD-EVANS JOY
SONNENFROH DAVID
ALLEN MARK G
STAFFORD-EVANS JOY
Application Number:
PCT/IB2002/004947
Publication Date:
June 10, 2004
Filing Date:
November 25, 2002
Export Citation:
Assignee:
AIR LIQUIDE (FR)
International Classes:
F23N5/00; G01N21/35; (IPC1-7): G01N21/35; F23N5/00
Domestic Patent References:
| WO2001033200A1 | 2001-05-10 | |||
| WO1994008226A1 | 1994-04-14 |
Foreign References:
| GB2264170A | 1993-08-18 | |||
| US5021662A | 1991-06-04 |
Other References:
ALLEN M G: "DIODE LASER ABSORPTION SENSORS FOR GAS-DYNAMIC AND COMBUSTION FLOWS", MEASUREMENT SCIENCE AND TECHNOLOGY, IOP PUBLISHING, BRISTOL, GB, vol. 9, no. 4, 1 April 1998 (1998-04-01), pages 545 - 562, XP000780563, ISSN: 0957-0233
EBERT V ET AL: "SIMULTANEOUS DIODE-LASER-BASED IN SITU DETECTION OF MULTIPLE SPECIES AND TEMPERATURE IN A GAS-FIRED POWER PLANT", PROCEEDINGS OF THE 28TH SYMPOSIUM (INTERNATIONAL) ON COMBUSTION, 2000, pages 423 - 430, XP001148198
EBERT V ET AL: "SIMULTANEOUS DIODE-LASER-BASED IN SITU DETECTION OF MULTIPLE SPECIES AND TEMPERATURE IN A GAS-FIRED POWER PLANT", PROCEEDINGS OF THE 28TH SYMPOSIUM (INTERNATIONAL) ON COMBUSTION, 2000, pages 423 - 430, XP001148198
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