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Coupling the normal incident light into waveguide modes of DBR mirrors via a diffraction grating
- Source :
- Scientific Reports
- Publication Year :
- 2016
- Publisher :
- Nature Publishing Group, 2016.
-
Abstract
- Here we numerically and experimentally demonstrate the conversion of normally incident light into the guiding modes of distributed Bragg reflector (DBRs) mirror. By fabricating a gold grating onto a 7.5 pairs TiO2/SiO2 DBR mirror, a series of asymmetrical resonances have been formed at the bandgap range of the DBR mirror. The detailed numerical calculations show that these Fano resonances are attributed to the coupling of incident waves into guiding modes of the DBR mirror. Compared with the other resonances, this coupling mechanism can be simply realized and it has also been revealed to be quite robust to the environmental changes, making the conversion between propagating waves and guiding waves to be practically interesting for many applications.
- Subjects :
- Coupling
Physics
Multidisciplinary
business.industry
Guided-mode resonance
Fano resonance
Physics::Optics
02 engineering and technology
Grating
021001 nanoscience & nanotechnology
Distributed Bragg reflector
01 natural sciences
Ray
Article
law.invention
010309 optics
Optics
law
0103 physical sciences
Blazed grating
0210 nano-technology
business
Diffraction grating
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....51883d071b3c6be4addf9926b68ff3e2