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Holographic interference filters for infrared communications.
Damon W Diehl1, Nicholas George
1The Institute of Optics, University of Rochester, Rochester, New York 14627-0186, USA. damon@optics.rochester.edu
Applied Optics
|March 18, 2003
Summary
High-quality holographic interference filters for 1300-1600 nm were fabricated using photopolymer material and visible lasers. A thin-film decomposition technique aids in designing filters with specific transmission efficiency and bandwidth.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Holographic interference filters offer precise control over light transmission.
- Photopolymer materials provide a versatile medium for holographic recording.
Purpose of the Study:
- To demonstrate the holographic fabrication of high-quality interference filters in the 1300-1600 nm range.
- To present a thin-film decomposition technique for modeling multilayer films.
- To develop design curves for optimizing filter performance.
Main Methods:
- Holographic fabrication using DuPont HRF-800X001 photopolymer and visible laser illumination.
- Application of a chain-matrix technique (thin-film decomposition) for modeling multilayer films with arbitrary index profiles.
- Generation of design curves correlating exposure angle and film thickness with filter characteristics.
Main Results:
- Successful fabrication of high-quality interference filters in the 1300-1600 nm wavelength range.
- Demonstrated utility of the thin-film decomposition technique for accurate modeling.
- Excellent agreement observed between theoretical predictions and experimental results.
Conclusions:
- Visible laser illumination is effective for fabricating high-quality holographic interference filters in photopolymers.
- The thin-film decomposition technique and derived design curves are valuable tools for filter design.
- The developed methods are broadly applicable to various holographic recording media.