A motion compensated fiber optic confocal microscope based on common-path optical coherent tomography distance sensor

Yong Huang*, Kang Zhang, Ching Lin, Jin U. Kang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A motion compensated fiber optic confocal microscope system is demonstrated using a combination of a Fourier domain common-path optical coherence tomography (CP-OCT) distance sensor and a high-speed linear motor. The confocal microscope is based on 460 micron diameter fiber bundle terminated with a gradient index (GRIN) lens. Using the peak detection of a 1-D A-scan data of CP-OCT, the distance deviation from the focal plane could be monitored in real-time. When the distance deviation surpasses a certain threshold, the linear motor drives the confocal microscope probe at a speed related to the change in the deviation to maintain the deviation within a predetermined limit. The motion compensation was achieved for a confocal microscope imaging rate of 1Hz with an average distance error of 4 microns.

Original languageEnglish
Title of host publicationOptical Fibers, Sensors, and Devices for Biomedical Diagnostics and Treatment XI
DOIs
Publication statusPublished - 2011
Externally publishedYes
EventOptical Fibers, Sensors, and Devices for Biomedical Diagnostics and Treatment XI - San Francisco, CA, United States
Duration: 22 Jan 201123 Jan 2011

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume7894
ISSN (Print)1605-7422

Conference

ConferenceOptical Fibers, Sensors, and Devices for Biomedical Diagnostics and Treatment XI
Country/TerritoryUnited States
CitySan Francisco, CA
Period22/01/1123/01/11

Keywords

  • Confocal Microscope
  • common path optical coherence tomography
  • fiber bundle
  • motion compensation

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