Photonic and Plasmonic crystals and cavities

16:40 : Impact of Size and Pitch on the Optical Properties of Ordered Arrays of InGaN/GaN Quantum Disc and Core-Shell Nanowires

Duncan Allsopp, Ionut Girgil, Chris Lewins, Emmanual Le Boulbar, Simon O'Kane, Pierre-Marie Coulon, Szymon Lis, Sophia Fox, Philip Shields

University of Bath (United Kingdom)

Different forms of diffractive behavior of highly ordered arrays of regular-shaped InGaN/GaN nanowires fabricated by a top-down process is described. Both core-shell and GaN nanowires containing a single InGaN quantum well are considered. Suppression of light trapping in the substrate layers can cause Bloch mode formation in the nanowire layer and simultaneous suppression of vertical waveguiding in the nanowires.
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16:55 : Multi-purpose, Automated Optimization of Photonic Crystal Cavities

Momchil Minkov, Vincenzo Savona

EPFL Lausanne (Switzerland)

Photonic crystal cavities are used in a number of experiments as they offer a combination of small volume and large quality factor. Here, we present a versatile, automated procedure to optimize these structures, and several successful applications. We improve the quality factor of some of the most common designs by approximately an order of magnitude, and in addition we propose some interesting applications with respect to figures of merit other than the quality factor.
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17:10 : Hybrid III-V on silicon photonic crystal based optical modulator

Thi Nhung Vu (1),Delphine Marris Morini (1),Fabrice Raineri (2),Rama Raj (2),Diego Perez-Galacho (1),Xavier Leroux (1),Laurent Vivien (1)

(1)Paris Sud University (France) , (2)Laboratoire de Photonique et de Nanostructures-CNRS (France)

We demonstrate a compact and low power consumption III-V on silicon modulator that combines electroabsorption in III-V material with slow light photonic crystal waveguides. The proposed design allows a good compromise between the modulator's figures of merit. An extinction ratio up to 20 dB is obtained, showing a 3 dB cut-off frequency of 15 GHz, and a total energy consumption below 50 fJ/bit.
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17:25 : Double pin-hole nanoresonators by sphere-imprinting for particle sizing and spectrum filtering applications

Jing Zhou, Ashwin Panday, L. Jay Guo

University of Michigan (USA)

We use sphere-imprinted method to realize a double pin-hole nanoresonator with wedged sidewalls and demonstrate the applications of accurate sphere size characterizing and fine spectrum filtering.
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17:40 : Effect of Ethanol on Dispersion Properties of Photonic Crystal Fiber

Rahul Gangwar, Vanita Bhardwaj, Vinod Singh

Indian School of Mines (India)

We present theoretical study of newly designed structure of ethanol filled sold core photonic crystal fiber. The numerical simulation shows that zero dispersion wavelength can be shifted by selectively filling of ethanol in the holes of photonic crystal fiber. This type of photonic crystal fiber is very useful for communication and sensing applications.
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