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External reflection from omnidirectional dielectric mirror fibers.
Shandon D Hart1, Garry R Maskaly, Burak Temelkuran
1Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Science (New York, N.Y.)
|April 20, 2002
Summary
Researchers created novel dielectric mirror fibers using a multilayered approach. These fibers exhibit high reflectivity, paving the way for advanced radiation barriers and optical filters.
Area of Science:
- Materials Science
- Optics
- Photonics
Background:
- Dielectric mirrors are crucial optical components.
- Developing flexible and robust dielectric mirrors remains a challenge.
Purpose of the Study:
- To design and fabricate multilayered dielectric mirror fibers.
- To characterize the optical properties of extended fiber lengths.
- To explore potential applications of these novel fibers.
Main Methods:
- Fabrication of a multilayered macroscopic fiber preform with 21 alternating layers of glassy materials with different refractive indices.
- Drawing of the preform into extended fiber lengths with submicrometer layer thickness.
- Optical characterization to assess reflection efficiencies and photonic band gaps.
Main Results:
- Successfully fabricated omnidirectional dielectric mirror fibers with submicrometer layer thickness.
- Achieved large directional photonic band gaps.
- Demonstrated high reflection efficiencies comparable to metallic reflectors.
Conclusions:
- The developed dielectric mirror fibers offer a promising new material for optical applications.
- Potential applications include radiation barriers, spectral authentication, and telecommunication filters.
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