Related Experiment Video
Updated: Mar 19, 2026
13:49
High-resolution Fiber-optic Microendoscopy for in situ Cellular Imaging
Published on: January 11, 2011
35.2K
Single-pixel phase-corrected fiber bundle endomicroscopy with lensless focussing capability
George S D Gordon1, James Joseph2, Sarah E Bohndiek2
1Electrical Engineering Division, University of Cambridge, CB3 0FA, Cambridge, U.K. gsdg2@cam.ac.uk.
Summary
A new single-pixel imaging technique enables coherent imaging through endoscopic fiber bundles. This method enhances sensitivity and allows electronic focal plane adjustment, improving image quality for applications like fluorescence microscopy.
Area of Science:
- Optics
- Biomedical Imaging
- Microscopy
Background:
- Endoscopic fiber bundles present challenges for coherent imaging due to aberrations.
- Existing methods may lack sensitivity or wavelength versatility for applications like fluorescence microscopy.
Purpose of the Study:
- To present a novel single-pixel method for coherent imaging through endoscopic fiber bundles.
- To demonstrate phase compensation for improved image quality and electronic focal plane adjustment.
- To explore applications in endoscopic fluorescence microscopy.
Main Methods:
- Simulation of lensless focusing through fiber bundles to assess pixelation effects.
- Development of an experimental optical correlator system utilizing spatial light modulators (SLMs).
- Implementation of a contrast imaging method for characterizing and compensating phase aberrations.
Main Results:
- Successful characterization of the optical phase profile of individual fiberlets using the phase compensation method.
- Demonstration of electronic focal plane adjustment at the distal end of the fiber bundle.
- Noticeable increase in the structural similarity index (SSIM) between simulated and experimental images after phase correction, yielding visually recognizable images.
Conclusions:
- The developed single-pixel method offers a viable approach for coherent imaging through endoscopic fiber bundles.
- Phase compensation significantly improves image quality and enables electronic focusing.
- The technique holds promise for advanced endoscopic fluorescence microscopy.
