high resolution endoscope
illumination for endoscope
imaging optics for endoscope
micro optics for endoscope
Dual Field of View optics
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PublisherThe University of Arizona.
RightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
AbstractThe present dual field of view flexible colonoscope can provide both forward view and radial or backward view of the colon to improve detection of cancerous polyps. The colonoscope has its own illumination that illuminates the parts of the colon viewed by imaging optics. The optical system, limited only by the diffraction effects at the exit pupil over the entire visible spectrum, can provide high resolution and is suitable for color imaging. The flexible colonoscope has an on-board sensor at the proximal end of the colonoscope to improve resolution. The proximal end of colonoscope measures only 8 mm in diameter and 20 mm in length. The present colonoscope has the potential to be scaled down to as small as 6 mm inner diameter from the present 8 mm.
Degree ProgramGraduate College
Degree GrantorUniversity of Arizona
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Copying a Plasmonic Signal From an Optical SignalKoo, Sung-Ryoung; Kim, Guhwan; Lee, Dong Hun; Kim, Kyung-Jo; Lee, Myung-Hyun; Univ Arizona, Coll Opt Sci (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2020-08)We propose a plasmonic signal copier (PSC) composed of a gapped surface plasmon polariton waveguide (SPPW) and an optical waveguide laid across the gap. The interaction between an SPP and an optical signal around the gap edge is demonstrated experimentally and numerically with polarizations of the incident optical wave. A plasmonic signal is invertedly copied from a TE-polarized optical signal incident to the optical waveguide. The symmetrically distributed charges induced from the TE-polarized optical waves on the metal gap edges of input/output SPPWs were determined to be an essential trigger of the copied plasmonic signal. The characteristics of the PSC enable creation of a plasmonic-based circuit system that is compatible with an optical-based circuit system.
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