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Efficiency of integrated waveguide probes for the detection of light backscattered from weakly scattering media |
Applied Optics, Vol. 50, Issue 6, pp. 935-942 (2011)
http://dx.doi.org/10.1364/AO.50.000935
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Abstract
A semianalytical model for light collection by integrated waveguide probes is developed by extending previous models used to describe fiber probes. The efficiency of waveguide probes is compared to that of different types of fiber probes for different thicknesses of a weakly scattering sample. The simulation results show that integrated probes have a collection efficiency that is higher than that of small-core fiber probes, and, in the particular case of thin samples, also exceeds the collection efficiency of large-core highly multimode fiber probes. An integrated waveguide probe with one excitation and eight collector waveguides is fabricated and applied to excite and collect luminescence from a ruby rod. The experimental results are in good agreement with the simulation and validate the semianalytical model.
© 2011 Optical Society of America
OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(130.0130) Integrated optics : Integrated optics
(170.6280) Medical optics and biotechnology : Spectroscopy, fluorescence and luminescence
(010.1350) Atmospheric and oceanic optics : Backscattering
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: December 15, 2010
Manuscript Accepted: January 6, 2011
Published: February 17, 2011
Virtual Issues
Vol. 6, Iss. 3 Virtual Journal for Biomedical Optics
Citation
Nur Ismail, Fehmi Civitci, Kerstin Wörhoff, René M. de Ridder, Markus Pollnau, and Alfred Driessen, "Efficiency of integrated waveguide probes for the detection of light backscattered from weakly scattering media," Appl. Opt. 50, 935-942 (2011)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-50-6-935
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