High speed low noise multiplexed three color absorbance photometry

Multispectral photometry is often required to distinguish samples in flow injection analysis and flow cytometry; however, the cost of multiple light detectors, filters, and optical paths contribute to the high cost of multicolor and spectral detection systems. This paper describes frequency division...

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Bibliographic Details
Main Authors: Dadesh, Khaled M., Kurup, G. K., Basu, Amar S.
Format: Conference Proceeding
Language:English
Subjects:
Amplifiers
Detectors
Frequency division multiplexing
Frequency measurement
Frequency modulation
Optical filters
Photometry
Online Access:Request full text
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Summary:Multispectral photometry is often required to distinguish samples in flow injection analysis and flow cytometry; however, the cost of multiple light detectors, filters, and optical paths contribute to the high cost of multicolor and spectral detection systems. This paper describes frequency division multiplexing (FDM), a simple approach for performing multi-wavelength absorbance photometry with a single light detector and a single interrogation window. In previous efforts, modulation frequencies were
ISSN:1094-687X
1558-4615
2694-0604
DOI:10.1109/IEMBS.2011.6089891