Lissajous fiber scanning for forward viewing optical endomicroscopy using asymmetric stiffness modulation

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We report a fully packaged and compact forward viewing endomicroscope by using a resonant fiber scanner with two dimensional Lissajous trajectories. The fiber scanner comprises a single mode fiber with additional microstructures mounted inside a piezoelectric tube with quartered electrodes. The mechanical cross-coupling between the transverse axes of a resonant fiber with a circular cross-section was completely eliminated by asymmetrically modulating the stiffness of the fiber cantilever with silicon microstructures and an off-set fiber fragment. The Lissajous fiber scanner was fully packaged as endomicroscopic catheter passing through the accessory channel of a clinical endoscope and combined with spectral domain optical coherence tomography (SD-OCT). Ex-vivo 3D OCT images were successfully reconstructed along Lissajous trajectory. The preview imaging capability of the Lissajous scanning enables rapid 3D imaging with high temporal resolution. This endoscopic catheter provides many opportunities for on-demand and non-invasive optical biopsy inside a gastrointestinal endoscope
Publisher
OPTICAL SOC AMER
Issue Date
2014-03
Language
English
Article Type
Article
Keywords

HIGH-GRADE DYSPLASIA; MICROELECTROMECHANICAL SYSTEM MIRROR; COHERENCE TOMOGRAPHY; IN-VIVO; ENDOSCOPIC BIOPSY; EARLY ADENOCARCINOMA; 2-PHOTON MICROSCOPE; BARRETTS-ESOPHAGUS; PROBE; CATHETER

Citation

OPTICS EXPRESS, v.22, no.5, pp.5818 - 5825

ISSN
1094-4087
DOI
10.1364/OE.22.005818
URI
http://hdl.handle.net/10203/188989
Appears in Collection
BiS-Journal Papers(저널논문)
Files in This Item
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