Light guidance in photonic band gap guiding dual-ring light cages implemented by direct laser writing
| Autor: | Markus A. Schmidt, Julian Gargiulo, Ron Fatobene Ando, Stefan A. Maier, Alberto Lauri, Bumjoon Jang |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
TRANSMISSION 0205 Optical Physics 02 engineering and technology 01 natural sciences law.invention 010309 optics Optics DISPERSION law 0103 physical sciences 0206 Quantum Physics Photonic crystal Total internal reflection Science & Technology business.industry 021001 nanoscience & nanotechnology Polarization (waves) Chip Laser Atomic and Molecular Physics and Optics Quantum technology MODEL 0906 Electrical and Electronic Engineering Physical Sciences Millimeter 0210 nano-technology business Refractive index FIBERS |
| Zdroj: | Optics Letters |
| Popis: | Efficient waveguiding inside low refractive index media is of key importance for a great variety of applications that demand strong light–matter interaction on small geometric footprints. Here, we demonstrate efficient light guidance in single-defect dual-ring light cages over millimeter distances that are integrated on silicon chips via direct laser writing. The cages consist of two rings of high aspect-ratio polymer strands (length 5 mm, aspect ratio >1000) hexagonally arranged around a hollow core. Clear-core mode formation via the photonic band gap effect is observed, with the experiments showing pronounced transmission bands with fringe and polarization contrasts of >20 dB and >15 dB, respectively. Numerical simulations confirm our experiments and reveal the dual-ring arrangement to be the optimal geometry within the light cage concept. Particularly, the side-wise access to the core regions and the chip integration makes the light cage concept attractive for a great number of fields such as bioanalytics or quantum technology. |
| Databáze: | OpenAIRE |
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