Micromachined array tip for multifocus fiber-based optical coherence tomography

Abstract

High-resolution optical coherence tomography demands a large detector bandwidth and a high numerical aperture for real-time imaging, which is difficult to achieve over a large imaging depth. To resolve these conflicting requirements we propose a novel multifocus fiber-based optical coherence tomography system with a micromachined array tip. We demonstrate the fabrication of a prototype four-channel tip that maintains a $9–14‐\mathit{\mu }\mathrm{m}$ spot diameter with more than $500 \mathit{\mu }\mathrm{m}$ of imaging depth. Images of a resolution target and a human tooth were obtained with this tip by use of a four-channel cascaded Michelson fiber-optic interferometer, scanned simultaneously at 8 kHz with geometric power distribution across the four channels.

© 2004 Optical Society of America

Endoscopic optical coherence tomography based on a microelectromechanical mirror

Yingtian Pan, Huikai Xie, and Gary K. Fedder
Opt. Lett. 26(24) 1966-1968 (2001)

Fiber-optic-bundle-based optical coherence tomography

Tuqiang Xie, David Mukai, Shuguang Guo, Matthew Brenner, and Zhongping Chen
Opt. Lett. 30(14) 1803-1805 (2005)

Continuous focus tracking for real-time optical coherence tomography

Michael J. Cobb, Xiumei Liu, and Xingde Li
Opt. Lett. 30(13) 1680-1682 (2005)

Rapid-scanning forward-imaging miniature endoscope for real-time optical coherence tomography

Xiumei Liu, Michael J. Cobb, Yuchuan Chen, Michael B. Kimmey, and Xingde Li
Opt. Lett. 29(15) 1763-1765 (2004)

Electrostatic micromachine scanning mirror for optical coherence tomography

J. M. Zara, S. Yazdanfar, K. D. Rao, J. A. Izatt, and S. W. Smith
Opt. Lett. 28(8) 628-630 (2003)