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Mid-infrared supercontinuum generation to 12.5?m in large NA chalcogenide step-index fibres pumped at 4.5?m (2014)
Journal Article
Kubat, I., Agger, C. S., Møller, U., Seddon, A. B., Tang, Z., Sujecki, S., …Bang, O. (2014). Mid-infrared supercontinuum generation to 12.5μm in large NA chalcogenide step-index fibres pumped at 4.5μm. Optics Express, 22(16), 19169-19182. https://doi.org/10.1364/oe.22.019169

We present numerical modeling of mid-infrared (MIR) supercontinuum generation (SCG) in dispersion-optimized chalcogenide (CHALC) step-index fibres (SIFs) with exceptionally high numerical aperture (NA) around one, pumped with mode-locked praseodymium... Read More about Mid-infrared supercontinuum generation to 12.5?m in large NA chalcogenide step-index fibres pumped at 4.5?m.

Practical limitation on operation of nonlinear parity-time Bragg gratings (2014)
Conference Proceeding
Phang, S., Vukovic, A., Susanto, H., Benson, T. M., & Sewell, P. (2014). Practical limitation on operation of nonlinear parity-time Bragg gratings.

The paper analyses the operation of PT Bragg gratings when the dielectric material is considered to be both dispersive and nonlinear and gain and loss are saturable. The paper demonstrates the application of the nonlinear PT Bragg Grating as an optic... Read More about Practical limitation on operation of nonlinear parity-time Bragg gratings.

Impact of dispersive and saturable gain/loss on bistability of nonlinear parity–time Bragg gratings (2014)
Journal Article
Phang, S., Vukovic, A., Susanto, H., Benson, T. M., & Sewell, P. (2014). Impact of dispersive and saturable gain/loss on bistability of nonlinear parity–time Bragg gratings. Optics Letters, 39(9), 2603-2606. https://doi.org/10.1364/ol.39.002603

We report on the impact of realistic gain and loss models on the bistable operation of nonlinear parity–time (PT) Bragg gratings. In our model we include both dispersive and saturable gain and show that levels of gain/loss saturation can have a signi... Read More about Impact of dispersive and saturable gain/loss on bistability of nonlinear parity–time Bragg gratings.

Broadband, mid-infrared emission from Pr3+ doped GeAsGaSe chalcogenide fiber, optically clad (2014)
Journal Article
Sójka, L., Tang, Z., Furniss, D., Sakr, H., Oladeji, A., Bereś-Pawlik, E., …Sujecki, S. (2014). Broadband, mid-infrared emission from Pr3+ doped GeAsGaSe chalcogenide fiber, optically clad. Optical Materials, 36(6), 1076-1082. https://doi.org/10.1016/j.optmat.2014.01.038

We present a study of mid-infrared photoluminescence in the wavelength range 3.5–5.5lm emitted from Pr3+: GeAsGaSe core/GeAsGaSe cladding chalcogenide fiber. The Pr3+doped fiber optic preform is fabricated using extrusion and is successfully drawn to... Read More about Broadband, mid-infrared emission from Pr3+ doped GeAsGaSe chalcogenide fiber, optically clad.

A novel photonic crystal band-pass filter using degenerate modes of a point-defect microcavity for terahertz communication systems (2014)
Journal Article
Chun-Ping, C., Anada, T., Greedy, S., Benson, T. M., & Sewell, P. (2014). A novel photonic crystal band-pass filter using degenerate modes of a point-defect microcavity for terahertz communication systems. Microwave and Optical Technology Letters, 56(4), 792-797. https://doi.org/10.1002/mop.28204

Compact devices are important for the realization of terahertz communications systems. This article proposes a novel photonic crystal-based device for realizing microminiature, high-selectivity high Q band-pass filters (BPF) and the design of a dual-... Read More about A novel photonic crystal band-pass filter using degenerate modes of a point-defect microcavity for terahertz communication systems.

Saturable and dispersive parity-time symmetric directional coupler: a transmission-line modelling study (2014)
Conference Proceeding
Phang, S., Vukovic, A., Benson, T. M., Creagh, S., Sewell, P., & Gradoni, G. (2014). Saturable and dispersive parity-time symmetric directional coupler: a transmission-line modelling study.

In this paper, numerical modelling of Parity-Time (PT) coupled waveguides is reported. The PT coupled waveguide structure consists of two coupled slab waveguides based on GaAs material with gain/loss material parameter models, including both dispersi... Read More about Saturable and dispersive parity-time symmetric directional coupler: a transmission-line modelling study.

Modelling of dispersive PT-symmetric Bragg grating (2014)
Conference Proceeding
Phang, S., Vukovic, A., Susanto, H., Benson, T. M., & Sewell, P. (2014). Modelling of dispersive PT-symmetric Bragg grating.

This paper reports on the time-domain numerical model of a parity-time Bragg grating with saturated and dispersive gain. The model is compared against the ideal PT scenario where the gain is constant and unsaturated for all frequencies.