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Updated: Jul 22, 2026
06:56
Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
Published on: May 23, 2017
Topological defects in moiré fringes with spiral zone plates
J A O Huguenin1, B Coutinho dos Santos, P A M dos Santos
1Instituto de Física, Universidade Federal Fluminense, BR-24210-340 Niteroi, Rio de Janeiro, Brazil.
Summary
Superposing spiral zone plates creates unique spatial structures with topological defects, mimicking optical vortices. This finding may enable new optical information processing applications.
Area of Science:
- Optics and Photonics
- Optical Physics
Background:
- Spiral zone plates are used to generate optical beams with phase singularities.
- Phase singularities are crucial features in optical vortex beams.
Purpose of the Study:
- To investigate the spatial structures formed by the superposition of spiral zone plates.
- To explore the topological defects in these structures and their relation to optical vortices.
Main Methods:
- Superposition of spiral zone plates.
- Observation and analysis of Moiré fringes.
- Theoretical discussion of observed phenomena.
Main Results:
- Formation of Moiré fringes with topological defects.
- Demonstration of similarity between these defects and those in optical vortex interference patterns.
- Theoretical support for the observed similarities.
Conclusions:
- The superposition of spiral zone plates generates structures analogous to optical vortices.
- Potential applications in optical digital information processing exist.
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