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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 4, Iss. 2 — Feb. 10, 2009

Optimized fiber optic bioprobe with high spectral contrast exploiting laser-induced fluorescence for malignancy diagnosis

Sunil K. Khijwania, C. K. Kim, Jagdish P. Singh, and Shane C. Burgess  »View Author Affiliations


Applied Optics, Vol. 47, Issue 35, pp. 6615-6624 (2008)
http://dx.doi.org/10.1364/AO.47.006615


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Abstract

A high spectral contrast is expected to be very important when laser-induced fluorescence (LIF) is employed for cancer diagnosis. We developed a LIF optical fiber sensor to achieve a very high spectral contrast between normal and malignant tissues. A comprehensive experimental investigation was carried out to study the role of two critically important parameters for sensor design, namely, the excitation–collection geometry and the excitation wavelength, and their effect on the autofluorescence spectral contrast. An optimum sensing configuration was determined in order to enhance the small, but consistent, spectral difference between the normal and the malignant tissue for improving the accuracy of LIF-based cancer diagnosis. With the optimum sensor configuration, we realized a spectral contrast of more than 22 times between normal and malignant tissue sample spectra.

© 2008 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(300.2530) Spectroscopy : Fluorescence, laser-induced

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: September 12, 2008
Manuscript Accepted: October 13, 2008
Published: December 5, 2008

Virtual Issues
Vol. 4, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Sunil K. Khijwania, C. K. Kim, Jagdish P. Singh, and Shane C. Burgess, "Optimized fiber optic bioprobe with high spectral contrast exploiting laser-induced fluorescence for malignancy diagnosis," Appl. Opt. 47, 6615-6624 (2008)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-47-35-6615

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