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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 23 — Aug. 10, 2007
  • pp: 5887–5894

Graded-index fiber lens proposed for ultrasmall probes used in biomedical imaging

Youxin Mao, Shoude Chang, Sherif Sherif, and Costel Flueraru  »View Author Affiliations


Applied Optics, Vol. 46, Issue 23, pp. 5887-5894 (2007)
http://dx.doi.org/10.1364/AO.46.005887


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Abstract

The quality and parameters of probing optical beams are extremely important in biomedical imaging systems both for image quality and light coupling efficiency considerations. For example, the shape, size, focal position, and focal range of such beams could have a great impact on the lateral resolution, penetration depth, and signal-to-noise ratio of the image in optical coherence tomography. We present a beam profile characterization of different variations of graded-index (GRIN) fiber lenses, which were recently proposed for biomedical imaging probes. Those GRIN lens modules are made of a single mode fiber and a GRIN fiber lens with or without a fiber spacer between them. We discuss theoretical analysis methods, fabrication techniques, and measured performance compared with theory.

© 2007 Optical Society of America

OCIS Codes
(060.2350) Fiber optics and optical communications : Fiber optics imaging
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4500) Medical optics and biotechnology : Optical coherence tomography

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: January 17, 2007
Revised Manuscript: April 5, 2007
Manuscript Accepted: June 20, 2007
Published: August 9, 2007

Virtual Issues
Vol. 2, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Youxin Mao, Shoude Chang, Sherif Sherif, and Costel Flueraru, "Graded-index fiber lens proposed for ultrasmall probes used in biomedical imaging," Appl. Opt. 46, 5887-5894 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-23-5887

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