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Optimization of an angled fiber probe for common-path optical coherence tomography
1Department of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA. xliu35@jhu.edu
Optics Letters
|August 2, 2013
Summary
We optimized common-path optical coherence tomography (CP OCT) sensitivity by angling a fiber probe. This technique improved signal-to-noise ratio by over 8 dB, enhancing OCT imaging quality.
Area of Science:
- Biomedical Optics
- Optical Engineering
- Medical Imaging Technology
Background:
- Common-path optical coherence tomography (CP OCT) offers advantages in stability and simplicity for optical imaging.
- Improving the sensitivity and signal-to-noise ratio (SNR) of CP OCT is crucial for enhanced diagnostic capabilities.
- Existing CP OCT systems can face limitations in sensitivity due to factors like reference arm power fluctuations.
Purpose of the Study:
- To optimize the sensitivity of common-path optical coherence tomography (CP OCT) systems.
- To investigate the impact of fiber probe angling on reference power and overall system performance.
- To achieve a significant improvement in the signal-to-noise ratio (SNR) for CP OCT imaging.
Main Methods:
- Utilized an angled fiber probe design for the common-path optical coherence tomography setup.
- Systematically varied the polishing angle of the fiber probe tip to control reference power magnitude.
- Experimentally measured the signal-to-noise ratio (SNR) across different polishing angles.
- Acquired optical coherence tomography (OCT) images using the optimized CP OCT configuration.
Main Results:
- Demonstrated that the polishing angle of the fiber probe significantly influences the reference power.
- Achieved a measurable improvement in signal-to-noise ratio (SNR) through optimization of the fiber probe angle.
- Reported an SNR enhancement exceeding 8 dB in the optimized common-path optical coherence tomography system.
- Obtained high-quality OCT images with the optimized CP OCT setup, showcasing improved sensitivity.
Conclusions:
- Angling the fiber probe is an effective method for optimizing reference power in CP OCT.
- The developed technique leads to a substantial increase in SNR, enhancing the performance of CP OCT systems.
- This optimization strategy holds promise for advancing the clinical applicability and diagnostic accuracy of OCT imaging.
