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Updated: Jun 16, 2026
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Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
Published on: February 3, 2023
Recording the parallelism of optically contacted Fabry-Perots.
Applied Optics
|February 20, 2010
Summary
A new device accurately measures Fabry-Perot etalon parallelism post-manufacturing. It uses gas pressure tuning and an insect-eye lens to capture simultaneous fringe patterns from multiple areas, ensuring optical quality.
Area of Science:
- Optical physics
- Metrology
- Instrument development
Background:
- Accurate parallelism is crucial for Fabry-Perot etalon performance.
- Existing methods for measuring parallelism may be time-consuming or lack precision.
- Optically contacted etalons require immediate post-manufacturing assessment.
Purpose of the Study:
- To develop a simple and accurate device for measuring the parallelism of optically contacted Fabry-Perot etalons.
- To enable rapid assessment of etalon quality immediately after fabrication.
Main Methods:
- Construction of a novel measurement device.
- Tuning of a Fabry-Perot fringe to an on-axis maximum using controlled gas pressure.
- Employing an insect-eye lens for simultaneous imaging of fringe patterns across multiple etalon areas.
Main Results:
- The device accurately records the parallelism of optically contacted Fabry-Perots.
- Simultaneous imaging captures fringe patterns from numerous small areas efficiently.
- The method allows for immediate post-manufacture quality control.
Conclusions:
- The developed device offers a simple, accurate, and rapid method for assessing Fabry-Perot etalon parallelism.
- This technique facilitates immediate quality control, improving manufacturing yield and etalon performance.
