Design, fabrication, and characterisation of fully etched TM grating coupler for photonic integrated system-in-package

Gili-de-Villasante, Oriol; Tcheg, Paul; Wang, Bei; Suna, Alpaslan; Giannoulis, Giannis; Lazarou, Ioannis; Apostolopoulos, D.; Avramopoulos, H.; Pleros, Nikos; Baus, M.; Karl, Matthias; Tekin, Tolga

doi:10.1117/12.922846

Cited by 1 publication

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“…If we compare this values to a typical optical fiber which has a core cross sectional area of 250 µm 2 (i.e. radius of 8-10 µm) then we completely understand that optical fiber has three orders magnitude larger cross section [100]. This causes a very high amount of loss without a mode size conversion solution.…”

Section: Coupling Light From Fiber To Nano-waveguidementioning

confidence: 99%

Nanometric surface probing through ultra-cold atoms

Khan¹,

Schaefer²,

Pernice³

et al. 2014

SPIE Proceedings

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In this thesis we simulate and design an experimental set up that is going to be used in many applications of applied physics and will give us many answer to unsolved puzzles. This experimental set up is going to feature for the first time the ability to interchange an atom chip frequently and rapidly. The setup also brings two emerging fields, ultracold atoms and nanophotonics, together on an optical table.First, we calculated and simulated the cold atom set-up. Then we simulated and designed an atom chip capable of bringing ultra-cold atoms to sub-micron distances to the chip surface. This new apparatus will present very first ideas on how to use the unique combination of cold atom technology with interchangeable photonics components, both, for basic research and for technological applications to modern information technologies. Furthermore, we can readily exchange the chip to test new components without the need for complicated high-vacuum procedures.The setup will be paired with photonic structures built on-chip for the detailed study of matter-light interactions and, e.g., a depth investigation of dispersion forces (the Casimir interaction and the van der Waals interaction) between cold atoms and carbon nanotubes, that can be measured by scanning probe microscopy. This will allow the integration of photonic waveguides atom chip and will open a new door for modern information technologies.Thesis effort is a joint venture project between the European Laboratory for Non-Linear Spectroscopy (LENS), Florence and the Karlsruhe Institute of Technology (KIT), Karlsruhe, and thrives to bring together experiences in cold atom physics and photonics.

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Section: Coupling Light From Fiber To Nano-waveguidementioning

confidence: 99%