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1 May 2007Realization of 2D scanning pattern of a fiber cantilever by nonlinear coupling
Optical coherence tomography (OCT) is a recently developed high resolution biomedical imaging method. Fast scanning
speed and miniature probe is benefit for clinical applications of OCT. In this paper we present a method to realize fast
lateral scanning with two-dimensional (2D) resonant scanning pattern. By driving a fiber cantilever with a bimorph
actuator near its resonance, the planar motion of the fiber cantilever may develop to an elliptical motion due to nonlinear
coupling with longitudinal inertia. This effect can be exploited to form 2D scanning pattern. Basic principle relevant to
realization of 2D scanning pattern of the fiber cantilever scanner by 1D actuator, as well as confirming experimental
results are presented. Future work and system configuration on implementing this fiber cantilever scanner in the sample
arm of a fiber-based OCT system is proposed.
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Ling Wu, Zhihua Ding, Gang Huang, "Realization of 2D scanning pattern of a fiber cantilever by nonlinear coupling," Proc. SPIE 6534, Fifth International Conference on Photonics and Imaging in Biology and Medicine, 65340I (1 May 2007);