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Fiber lenses for ultra-small probes used in optical coherent tomography

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.4236/jbise.2010.31004
AuthorSearch for: 1; Search for: 1; Search for: 1
Affiliation
  1. National Research Council of Canada. NRC Institute for Microstructural Sciences
FormatText, Article
SubjectOptical Fiber Probe; Optical Coherence Tomography; Bio-Medical Imaging; Optical Fiber Probe; Optical Coherence Tomography; Bio-Medical Imaging
Abstract
We present a design, construction and characteriza-tion of different variations of GRIN and ball fiber lenses, which were recently proposed for ultra-small biomedical imaging probes. Those fiber lens modules are made of a single mode fiber and a GRIN or ball fiber lens with or without a fiber spacer between them. The lens diameters are smaller than 0.3 mm. We discuss design methods, fabrication techniques, and measuring performance of the fiber lenses. The experimental results are compared to their modeling results. The fabrication of a high quality beam direc-tor for both lens types is presented as well. These fi-ber integrated beam directors could be added on the tips of the fiber lenses for side-view probes. A needle probe made by these fiber lenses is demonstrated as a sample of the ultra-small probe for biomedical imag-ing application. In vivo human finger images ac-quired by a swept source optical coherence tomo-graphy using the fiber lenses with different beam profiles were shown, which indicates the important impact of fiber lens on the image quality.
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  • Journal of Biomedical Science and Engineering 3, no. 1 (1 January 2010): 27–34.
LanguageEnglish
Peer reviewedYes
NPARC number17401008
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Record identifierad014b43-d4d2-4306-8160-702c22eb76d1
Record created2011-03-26
Record modified2020-04-17
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