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Proceedings Paper

Homodyne frequency-domain instrument: I & Q Phase Detection System
Author(s): Hong Yan Ma; Congwu Du; Britton Chance
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Paper Abstract

The noninvasive NIR detection technique can be used to detect the clinic-related parameter such as hemoglobin concentration and saturation. By now, many techniques have been demonstrated in both time-domain and frequency domain to obtain quantitative optical properties. In this paper, we demonstrate one kind of simple homodyne phase modulation system -- in- phase and quadrature phase (I&O) detection system, introducing its principle and constitution, presenting its performance through the tests of ink, intralipid and blood model.

Paper Details

Date Published: 18 August 1997
PDF: 12 pages
Proc. SPIE 2979, Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model, and Human Studies II, (18 August 1997); doi: 10.1117/12.280231
Show Author Affiliations
Hong Yan Ma, Univ. of Pennsylvania (United States)
Congwu Du, Univ. of Pennsylvania (United States)
Britton Chance, Univ. of Pennsylvania (United States)


Published in SPIE Proceedings Vol. 2979:
Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model, and Human Studies II
Britton Chance; Robert R. Alfano, Editor(s)

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