Multi-spectral laser sensor based on code-division-multiplexing techniques

Author

Wang, Y. ; Morbi, Z. ; Ho, D.B. ; Le, H.Q. ; Guo, B.-J. ; Pei, S.S.

Author_Institution

Dept. of Electr. & Comput. Eng., Houston Univ., TX, USA

Volume

3

fYear

2002

fDate

23-26 Oct. 2002

Firstpage

2259

Abstract

A multi-spectral laser sensor using the orthogonal code-division multiplexing technique is applied to measure the optical properties of biological-like turbid media. Measurement of the total attenuation coefficient of Intralipid was obtained for wavelength from 0.65 to 1.55 μm, which is the longest near-IR wavelength measured for this material, giving an empirical fit of λ^-2.43. The advantage of CDM techniques against interference was demonstrated by simulating the detection of a contaminant is cow milk under rapid agitation.

Keywords

biomedical measurement; biomedical transducers; code division multiplexing; laser applications in medicine; optical sensors; turbidity; 0.65 to 1.55 micron; Intralipid; biological-like turbid media; code-division-multiplexing techniques; cow milk; multispectral laser sensor; near-IR wavelength; rapid agitation; total attenuation coefficient; Attenuation measurement; Biological information theory; Biological materials; Biomedical optical imaging; Biosensors; Code division multiplexing; Optical attenuators; Optical sensors; Pollution measurement; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology, 2002. 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society EMBS/BMES Conference, 2002. Proceedings of the Second Joint

ISSN

1094-687X

Print_ISBN

0-7803-7612-9

Type

conf

DOI

10.1109/IEMBS.2002.1053271

Filename

1053271