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Optical coherence-domain reflectometry: a new optical evaluation technique
Optics Letters
|September 10, 2009
Summary
A new optical evaluation technique, optical coherence-domain reflectometry, precisely measures reflection sites in miniature optical assemblies. This method achieves high resolution and dynamic range for advanced optical analysis.
Area of Science:
- Optics and Photonics
- Metrology
- Optical Engineering
Background:
- Miniature optical assemblies require precise evaluation of internal reflection sites.
- Existing techniques may lack the resolution or dynamic range for complex micro-optics.
Purpose of the Study:
- To introduce and validate a novel optical evaluation technique for miniature optical assemblies.
- To detail the principles and experimental performance of optical coherence-domain reflectometry.
Main Methods:
- Utilizing coherence effects from a broadband optical source.
- Implementing optical coherence-domain reflectometry (OCDR) for reflection site analysis.
Main Results:
- Demonstrated a spatial resolution of 10 micrometers.
- Achieved an optical dynamic range exceeding 100 dB.
- Successfully determined positions and magnitudes of reflection sites.
Conclusions:
- Optical coherence-domain reflectometry is a powerful technique for evaluating miniature optical assemblies.
- The method offers superior resolution and dynamic range compared to conventional approaches.
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