Forward-viewing resonant fiber-optic scanning endoscope of appropriate scanning speed for 3D OCT imaging

Li Huo, Jiefeng Xi, Yicong Wu, Xingde Li

Research output: Contribution to journalArticle

Abstract

A forward-viewing resonant fiber-optic endoscope of a scanning speed appropriate for a high-speed Fourier-domain optical coherence tomography (FD-OCT) system was developed to enable real-time, three-dimensional endoscopic OCT imaging. A new method was explored to conveniently tune the scanning frequency of a resonant fiber-optic scanner, by properly selecting the fiber-optic cantilever length, partially changing the mechanical property of the cantilever, and adding a weight to the cantilever tip. Systematic analyses indicated the resonant scanning frequency can be tuned over two orders of magnitude spanning from ∼10Hz to ∼kHz. Such a flexible scanning frequency range makes it possible to set an appropriate scanning speed of the endoscope to match the different Ascan rates of a variety of FD-OCT systems. A 2.4-mm diameter, 62.5-Hz scanning endoscope appropriate to work with a 40-kHz swept-source OCT (SS-OCT) system was developed and demonstrated for 3D OCT imaging of biological tissues.

Original languageEnglish (US)
Pages (from-to)14375-14384
Number of pages10
JournalOptics Express
Volume18
Issue number14
DOIs
StatePublished - Jul 5 2010

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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