Category Archives: Research

We have a wide-ranging portfolio of research, all focused un using nanophotonics to control light and its propagation.

Flexible epsilon-near-zero metamaterials highlighted by Nature Photonics

Posted on 19/07/2019 by sas35

Our recent APL Photonics paper on flexible epsilon-near-zero metamaterials has been highlighted in the News & Views section of the July Issue of Nature Photonics. Congratulations to everyone involved.

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Flexible metasurface patches for mm-wave applications

Posted on 12/07/2019 by sas35

In this work, we present a flexible metasurface that operates in the mm-wavelength region. A major problem in modern technology is that many systems, e.g. antennas, are designed for specific functionality. If new functionality is needed, then a new antenna … Continue reading →

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Flexible epsilon-near-zero metamaterials

Posted on 03/06/2019 by sas35

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

Posted on 19/02/2019 by sas35

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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Sebastian Schulz awarded best presentation price at BICOP 2018

Posted on 21/12/2018 by sas35

Last week Sebastian Schulz attended the inaugeral IEEE British and Irish Conference on Optics and Photonics (BICOP) held at the Royal Society in London. He presented a poster on our work on overcoming the delay-bandwidth limit using nonreciprocity, as well as … Continue reading →

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Flat-band superprism in photonic crystals

Posted on 05/10/2018 by sas35

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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Dr Schulz awarded a Royal Society Research Grant

Posted on 04/10/2018 by sas35

Good news everyone: Dr Schulz has been awarded a Royal Society research grant for his proposal “Tuneable, dielectric metasurfaces on epsilon-near-zero films”. Stay tuned for progress updates. And if you are interested in learning more about our work on metasurfaces … Continue reading →

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Thermally stable integrated laser

Posted on 02/08/2018 by sas35

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

Posted on 29/06/2018 by sas35

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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