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Numerical analysis of spontaneous mid-infrared light emission from terbium ion doped multimode chalcogenide fibers (2018)
Journal Article
Sujecki, S., Sojka, L., Pawlik, E., Anders, K., Piramidowicz, R., Tang, Z., …Seddon, A. (2018). Numerical analysis of spontaneous mid-infrared light emission from terbium ion doped multimode chalcogenide fibers. Journal of Luminescence, 199, https://doi.org/10.1016/j.jlumin.2018.03.031

In this contribution we use a numerical model to study the photoluminescence emitted by Tb3+ doped chalcogenide-selenide glass fibers pumped by laser light at approximately 3 µm. The model consists of the set of ordinary differential equations (ODEs)... Read More about Numerical analysis of spontaneous mid-infrared light emission from terbium ion doped multimode chalcogenide fibers.

Numerical modelling of Tb3+ doped selenide-chalcogenide multimode fibre based spontaneous emission sources (2017)
Journal Article
Sujecki, S., Sójka, L., Bereś-Pawlik, E., Sakr, H., Tang, Z., Barney, E. R., …Seddon, A. B. (2017). Numerical modelling of Tb3+ doped selenide-chalcogenide multimode fibre based spontaneous emission sources. Optical and Quantum Electronics, 49(12), Article 416. https://doi.org/10.1007/s11082-017-1255-5

A model is developed of a terbium (III) ion doped selenide chalcogenide glass fibre source that provides spontaneous emission within the mid-infrared (MIR) wavelength range. Three numerical algorithms are used to calculate the solution and compare th... Read More about Numerical modelling of Tb3+ doped selenide-chalcogenide multimode fibre based spontaneous emission sources.

Numerical simulation of electromagnetic coupling in explicitly meshed wiring looms and bundles (2017)
Journal Article
Meng, X., Sewell, P., Vukovic, A., Zhang, Z., Benson, T. M., Jones, C., …South, G. (2018). Numerical simulation of electromagnetic coupling in explicitly meshed wiring looms and bundles. IET Science, Measurements and Technology, 12(2), 176-181. https://doi.org/10.1049/iet-smt.2017.0359

In this paper, the Unstructured Transmission Line Modelling (UTLM) method based on a tetrahedral mesh is applied to model the electromagnetic coupling into wire looms and bundles with multiple cores that are typical of an aircraft system, when they a... Read More about Numerical simulation of electromagnetic coupling in explicitly meshed wiring looms and bundles.

Extracting modal field profiles from 3D unstructured transmission line modelling meshes for use as sources and observers (2017)
Journal Article
Sewell, P., Vukovic, A., Benson, T. M., & Meng, X. (2017). Extracting modal field profiles from 3D unstructured transmission line modelling meshes for use as sources and observers. IET Science, Measurements and Technology, 11(6), 780-785. doi:10.1049/iet-smt.2016.0357

Large-scale three-dimensional (3D) electromagnetic simulations are commonly used as design and investigation tools in a wide variety of technological fields. It is not uncommon for both excitations and observation quantities to be expressed in terms... Read More about Extracting modal field profiles from 3D unstructured transmission line modelling meshes for use as sources and observers.

Determining the refractive index dispersion and thickness of hot-pressed chalcogenide thin films from an improved Swanepoel method (2017)
Journal Article
Fang, Y., Jayasuriya, D., Furniss, D., Tang, Z., Sojka, Ł., Markos, C., …Benson, T. (2017). Determining the refractive index dispersion and thickness of hot-pressed chalcogenide thin films from an improved Swanepoel method. Optical and Quantum Electronics, 49, Article 237. https://doi.org/10.1007/s11082-017-1057-9

The well-known method presented by Swanepoel can be used to determine the refractive index dispersion of thin films in the near-infrared region from wavelength values at maxima and minima, only, of the transmission interference fringes. In order to e... Read More about Determining the refractive index dispersion and thickness of hot-pressed chalcogenide thin films from an improved Swanepoel method.

Measurement of non-linear optical coefficients of chalcogenide glasses near the fundamental absorption band edge (2017)
Journal Article
Romanova, E., Kuzyutkina, Y., Shiryaev, V., Abdel-Moneim, N., Furniss, D., Benson, T., …Guizard, S. (2018). Measurement of non-linear optical coefficients of chalcogenide glasses near the fundamental absorption band edge. Journal of Non-Crystalline Solids, 480, https://doi.org/10.1016/j.jnoncrysol.2017.03.031

A time-resolved pump-probe method is used for the evaluation of non-linear optical coefficients of chalcogenide glasses from the As-S-Se and Ge-Se systems near their fundamental absorption band edges. The results are analyzed via comparison with the... Read More about Measurement of non-linear optical coefficients of chalcogenide glasses near the fundamental absorption band edge.

Promising emission behavior in Pr 3+ /In selenide-chalcogenide-glass small-core step index fiber (SIF) (2017)
Journal Article
Sakr, H., Tang, Z., Furniss, D., Sojka, L., Sujecki, S., Benson, T. M., & Seddon, A. B. (2017). Promising emission behavior in Pr 3+ /In selenide-chalcogenide-glass small-core step index fiber (SIF). Optical Materials, 67, 98-107. https://doi.org/10.1016/j.optmat.2017.03.034

Selenide-chalcogenide glass, small-core, step-index fiber (SIF), core-doped with Pr3+: 9.51 × 1024 ions m−3 (500 ppmw) is fabricated for the first time with indium to help solubilize Pr3+. Core diameters of 20 or 40 μm are confirmed using scanning el... Read More about Promising emission behavior in Pr 3+ /In selenide-chalcogenide-glass small-core step index fiber (SIF).

Coupled electrothermal two-dimensional model for lightning strike prediction and thermal modeling using the TLM method (2017)
Journal Article
Elkalsh, A., Sewell, P., Benson, T. M., & Vukovic, A. (2017). Coupled electrothermal two-dimensional model for lightning strike prediction and thermal modeling using the TLM method. IEEE Journal on Multiscale and Multiphysics Computational Techniques, 2, 38-48. https://doi.org/10.1109/JMMCT.2017.2683066

This paper presents a fully coupled two-dimensional (2-D) multiphysics model for predicting the location of the arc discharge and lightning channel, and modeling its thermal and electrical behavior as a highly conductive plasma channel. The model mak... Read More about Coupled electrothermal two-dimensional model for lightning strike prediction and thermal modeling using the TLM method.

Complexity Reduction of Multiscale UTLM Cell Clusters (2017)
Journal Article
Sewell, P., Benson, T. M., Vukovic, A., & Meng, X. (2017). Complexity Reduction of Multiscale UTLM Cell Clusters. IEEE Journal on Multiscale and Multiphysics Computational Techniques, 2, 18-28. https://doi.org/10.1109/jmmct.2017.2670613

Time domain electromagnetic simulations employing unstructured tetrahedral meshes offer smooth boundary approximations and graded meshes for multiscale problems. However, multiscale effects may arise not only as a consequence of fine geometry, but al... Read More about Complexity Reduction of Multiscale UTLM Cell Clusters.

Effect of submicron deformations on the transmission of all-solid photonic bandgap fibre (2016)
Journal Article
Konyukhov, A. I., Romanova, E. A., Benson, T. M., Athanasiou, G. S., Lousteau, J., Scarpignato, G., …Milanese, D. (2016). Effect of submicron deformations on the transmission of all-solid photonic bandgap fibre. Optical and Quantum Electronics, 48(12), https://doi.org/10.1007/s11082-016-0791-8

Waveguide losses in all-solid photonic bandgap fibre are studied numerically using both vectorial mode solver and vectorial beam propagation methods. Confinement loss, including material losses, is comprehensively evaluated for defect modes of hexago... Read More about Effect of submicron deformations on the transmission of all-solid photonic bandgap fibre.

Installed antenna performance in airborne radomes of different profiles (2016)
Journal Article
Vukovic, A., Sewell, P., Meng, X., & Benson, T. M. (2016). Installed antenna performance in airborne radomes of different profiles. Applied Computational Electromagnetics Society Journal, 1(8),

In this paper, broadband interactions between an antenna and a radome are modelled using a full wave numerical solver. By accurately describing both the antenna and the radome geometry with a single numerical method, a comprehensive prediction of the... Read More about Installed antenna performance in airborne radomes of different profiles.

Experimental benchmarking of Unstructured Transmission Line Modelling (UTLM) method in modelling twisted wires (2016)
Journal Article
Meng, X., Sewell, P., Rahman, N. H., Vukovic, A., & Benson, T. M. (in press). Experimental benchmarking of Unstructured Transmission Line Modelling (UTLM) method in modelling twisted wires

In this paper the Unstructured Transmission Line Modelling (UTLM) method based on a tetrahedral mesh has been applied to modelling of the coupling between a single wire and a twisted wire pair. The effects of wire twisting on the crosstalk and coupli... Read More about Experimental benchmarking of Unstructured Transmission Line Modelling (UTLM) method in modelling twisted wires.

The UK National Quantum Technologies Hub in sensors and metrology (Keynote Paper) (2016)
Journal Article
Bongs, K., Boyer, V., Cruise, M., Freise, A., Holynski, M., Hughes, J., …John, P. (2016). The UK National Quantum Technologies Hub in sensors and metrology (Keynote Paper). Proceedings of SPIE, 9900, Article 990009. https://doi.org/10.1117/12.2232143

The UK National Quantum Technology Hub in Sensors and Metrology is one of four flagship initiatives in the UK National of Quantum Technology Program. As part of a 20-year vision it translates laboratory demonstrations to deployable practical devices,... Read More about The UK National Quantum Technologies Hub in sensors and metrology (Keynote Paper).

Dy3+-doped selenide chalcogenide glasses: influence of Dy3+ dopant-aditive and containment (2016)
Journal Article
Furniss, D., Tang, Z., Barney, E., Neate, N. C., Benson, T., & Seddon, A. (2016). Dy3+-doped selenide chalcogenide glasses: influence of Dy3+ dopant-aditive and containment. Journal of the American Ceramic Society, 99(7), 2283-2291. doi:10.1111/jace.14218

This work reports on process‐induced impurities in rare‐earth ion: Dy3+‐doped selenide chalcogenide glasses, which are significant materials for active photonic devices in the mid‐infrared region. In particular, the effect of contamination from t... Read More about Dy3+-doped selenide chalcogenide glasses: influence of Dy3+ dopant-aditive and containment.

Electro-thermal modelling for plasmonic structures in the TLM Method (2016)
Journal Article
Elkalsh, A., Vukovic, A., Sewell, P., & Benson, T. M. (2016). Electro-thermal modelling for plasmonic structures in the TLM Method. Optical and Quantum Electronics, 48(4), https://doi.org/10.1007/s11082-016-0542-x

This paper presents a coupled electromagnetic-thermal model for modelling temperature evolution in nano-size plasmonic heat sources. Both electromagnetic and thermal models are based on the Transmission Line Modelling (TLM) method and are coupled thr... Read More about Electro-thermal modelling for plasmonic structures in the TLM Method.

Extended Capability Models for Carbon Fiber Composite (CFC) Panels in the Unstructured Transmission Line Modeling (UTLM) Method (2016)
Journal Article
Meng, X., Vukovic, A., Benson, T. M., & Sewell, P. (2016). Extended Capability Models for Carbon Fiber Composite (CFC) Panels in the Unstructured Transmission Line Modeling (UTLM) Method. IEEE Transactions on Electromagnetic Compatibility, 58(3), 811-819. https://doi.org/10.1109/TEMC.2016.2531791

© 2016 IEEE. An effective model of single- and multilayered thin panels, including those formed using carbon fiber composite (CFC) materials, is incorporated into the transmission line modeling (TLM) method. The thin-panel model is a one-dimensional... Read More about Extended Capability Models for Carbon Fiber Composite (CFC) Panels in the Unstructured Transmission Line Modeling (UTLM) Method.

Localized single frequency lasing states in a finite parity-time symmetric resonator chain (2016)
Journal Article
Phang, S., Vukovic, A., Creagh, S. C., Sewell, P., Gradoni, G., & Benson, T. M. (2016). Localized single frequency lasing states in a finite parity-time symmetric resonator chain. Scientific Reports, 6, Article e20499. https://doi.org/10.1038/srep20499

In this paper a practical case of a finite periodic Parity Time chain made of resonant dielectric cylinders is considered. The paper analyzes a more general case where PT symmetry is achieved by modulating both the real and imaginary part of the mate... Read More about Localized single frequency lasing states in a finite parity-time symmetric resonator chain.

Design, fabrication and demonstration of a 1x20 multimode interference splitter for parallel biosensing applications (2016)
Journal Article
Najeeb, N., Zhang, Y., Mellor, C. J., & Benson, T. M. (2016). Design, fabrication and demonstration of a 1x20 multimode interference splitter for parallel biosensing applications. Journal of Physics: Conference Series, 679(1), https://doi.org/10.1088/1742-6596/679/1/012027

This paper presents the experimental achievement of a silicon-on-insulator 1x20 MMI splitter andsimulation evaluations of the TE-like and TM-like mode MMI splitters for parallel biosensing applications. Device fabrication technology and optical chara... Read More about Design, fabrication and demonstration of a 1x20 multimode interference splitter for parallel biosensing applications.