Category Archives: Publications

Flexible epsilon-near-zero metamaterials

Epsilon-near-zero materials promise non-linear optical enhancement, light transport through arbitrary channels, wave-front shaping and control over optical emission. Typically implemented using either naturally occurring effects for example in conductive oxides or through multi-layer stacks all implementations are limited to flat-substrates … Continue reading

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Vertical couplers for multi-layer photonic integrated circuits

Similar to microelectronic circuits, future photonic chips will include multiple layers of different materials to integrate functionality in a single circuit. One of the key challenges is to couple light between the different layers. Together with the nanophotonics group at … Continue reading

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Flat-band superprism in photonic crystals

One of the key tasks in integrated photonics is the separation or demultiplexing of multiple different wavelength channels that are transported through the same waveguide. One way to separate different wavelength is to use refraction in a prism and the … Continue reading

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Thermally stable integrated laser

One problem in silicon photonics is that current integrated light sources are very sensitive to variations in the operating temperature. Together with the Centre for Advanced Photonics & Process Analysis we have developed a hybrid laser with an external reflector … Continue reading

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PhC based tunable optical buffer

In collaboration with the Centre for Advanced Photonics and Process Analysis at the Cork Institute of Technology, we have demonstrated a low loss optical buffer based on photonic crystal cavities, demonstrating a record low loss per storage time. The delay … Continue reading

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