Fiber-optic remote multisensor system based on an acousto-optic tunable filter (AOTF)

Journal Article · Tue Oct 01 00:00:00 EDT 1996 · Applied Spectroscopy

DOI:https://doi.org/10.1366/0003702963904917· OSTI ID:544236

Moreau, F; Moreau, S M; Hueber, D M; Vo-dinh, T ^[1]

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1. Advanced Monitoring Development Group, Health Sciences Research Division, Oak Ridge National Laboratory, Oak Ridge , Tennessee 37831 (United States)

This paper describes a new fiber-optic multisensor based on an acousto-optic tunable filter (AOTF) and capable of remote sensing using a multioptical fiber array (MOFA). A two-dimensional charge-coupled device (CCD) was used as a detector, and the AOTF was used as a wavelength selector. Unlike a tunable grating or prism-based monochromator, an AOTF has no moving parts, and an AOTF can be rapidly tuned to any wavelength in its operating range within microseconds. The large aperture of the AOTF allows the optical signal from over 100 fiber-optic sensors to be measured simultaneously. These characteristics, combined with their small size, make AOTFs an important new alternative to conventional monochromators, especially for spectral multisensing and imaging. A prototype fiber-optic multisensor system has been developed, and its feasibility for simultaneous detection of molecular luminescence signal via fiber-optic probes is demonstrated. {copyright} {ital 1996} {ital Society for Applied Spectroscopy}

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 544236
• Journal Information: Applied Spectroscopy, Vol. 50, Issue 10; Other Information: PBD: Oct 1996
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
OPTICAL SYSTEMS
REMOTE SENSING
FIBER OPTICS
PHOTOACOUSTIC EFFECT
TUNING
OPTICAL FILTERS
CHARGE-COUPLED DEVICES
COMPARATIVE EVALUATIONS