Dr. Christos Themistos Profile

Dr. Christos Themistos

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Author

Publications (21)

Proceedings Article | 21 May 2014 Paper

Characterization of graphene-based devices for THz systems

Christos Themistos, B. M. Rahman, Christos Markides, Md. Uthman, A. Quadir, N. Kejalakshmy

Proceedings Volume 9102, 91020F (2014) https://doi.org/10.1117/12.2054784

KEYWORDS: Graphene, Finite-difference time-domain method, Silica, Surface plasmons, Terahertz radiation, Finite element methods, Dispersion, Waveguides, Wave propagation, Interfaces

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Proceedings Article | 2 May 2014 Paper

Characterization of polymer nanowires fabricated using the nanoimprint method

Charusluk Viphavakit, Nithi Atthi, Sakoolkan Boonruang, Christos Themistos, Waleed Mohammed, Kyriacos Kalli, B.M. Azizur Rahman, Michael Komodromos

Proceedings Volume 9126, 912632 (2014) https://doi.org/10.1117/12.2052276

KEYWORDS: Polymers, Waveguides, Silica, Cladding, Nanolithography, Nanoimprint lithography, Image processing, Neodymium, Signal processing, Nanowires

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SPIE Journal Paper | 10 March 2014

Characterization of low-loss waveguides and devices for terahertz radiation

B. M. Rahman, Christos Markides, Mohammad Uthman, Anita Quadir, Namassivaye Kejalakshmy, Christos Themistos

OE, Vol. 53, Issue 03, 031210, (March 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.3.031210

KEYWORDS: Waveguides, Terahertz radiation, Quantum cascade lasers, Dielectrics, Metals, Wave propagation, Plasmonics, Signal attenuation, Photonic crystal fibers, Plasmonic waveguides

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Proceedings Article | 31 May 2013 Paper

Low-loss waveguides and devices for compact THz systems

B. M. Rahman, M. Uthman, A. Quadir, N. Kejalakshmy, C. Markides, C. Themistos

Proceedings Volume 8716, 87160R (2013) https://doi.org/10.1117/12.2017622

KEYWORDS: Waveguides, Terahertz radiation, Signal attenuation, Metals, Wave propagation, Dielectrics, Quantum cascade lasers, Cladding, Dispersion, Plasmonics

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Proceedings Article | 3 May 2013 Paper

Dispersion characteristics of plasmonic waveguides for THz waves

Christos Markides, Charusluk Viphavakit, Christos Themistos, Michael Komodromos, Kyriacos Kalli, Anita Quadir, Azizur Rahman

Proceedings Volume 8775, 87750J (2013) https://doi.org/10.1117/12.2021785

KEYWORDS: Waveguides, Wave propagation, Dispersion, Terahertz radiation, Surface plasmons, Finite-difference time-domain method, Radio propagation, Dielectrics, Finite element methods, Plasmonic waveguides

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Proceedings Article | 27 March 2013 Paper

Low-loss waveguides for THz guidance and devices

B. M. Rahman, C. Themistos, H. Tanvir, M. Uthman, A. Quadir, C. Markides

Proceedings Volume 8624, 862414 (2013) https://doi.org/10.1117/12.2008201

KEYWORDS: Waveguides, Terahertz radiation, Signal attenuation, Metals, Dielectrics, Quantum cascade lasers, Cladding, Finite element methods, Imaging spectroscopy, Plasmonics

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Proceedings Article | 26 April 2012 Paper

Femtosecond and UV inscribed grating characterization in photonic crystal fibres: optimization for sensing applications

Charalambos Koutsides, Eleni Yiangou, Christos Themistos, Michael Komodromos, Paul Christodoulides, Kyriacos Kalli

Proceedings Volume 8426, 84261O (2012) https://doi.org/10.1117/12.925662

KEYWORDS: Refractive index, Femtosecond phenomena, Birefringence, Ultraviolet radiation, Reflectivity, Cladding, Fiber Bragg gratings, Liquids, Photonic crystal fibers, Phase matching

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Proceedings Article | 26 April 2012 Paper

Low-loss multimode interference couplers for terahertz waves

Christos Themistos, Kyriacos Kalli, Michael Komodromos, Christos Markides, Anita Quadir, B. M. Azizur Rahman, Kenneth Grattan

Proceedings Volume 8426, 84260X (2012) https://doi.org/10.1117/12.925655

KEYWORDS: Waveguides, Brain-machine interfaces, Terahertz radiation, Multimode interference devices, Finite-difference time-domain method, Beam propagation method, Finite element methods, Wave propagation, Radio propagation, Imaging spectroscopy

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Proceedings Article | 18 February 2009 Paper

Finite element characterisation of terahertz quantum cascade laser waveguides

H. Tanvir, B. M. A. Rahman, C. Themistos, N. Kejalakshmy, T. Chattppaddhaye, K. T. Grattan

Proceedings Volume 7215, 72150M (2009) https://doi.org/10.1117/12.807930

KEYWORDS: Waveguides, Doping, Quantum cascade lasers, Plasma, Metals, Gallium antimonide, Gallium arsenide, Surface plasmons, Interfaces, Semiconductors

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Proceedings Article | 26 September 2007 Paper

Low-loss terahertz waveguides exploiting surface-plasmon modes

B. M. Rahman, Christos Themistos, Tanvir Huda, Kenneth Grattan

Proceedings Volume 6772, 67720F (2007) https://doi.org/10.1117/12.736427

KEYWORDS: Waveguides, Interfaces, Terahertz radiation, Metals, Scanning probe microscopy, Silver, Signal attenuation, Cameras, Finite element methods, Device simulation

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Proceedings Article | 2 November 2006 Paper

Surface plasmon modes for metal-clad terahertz waveguides

B. M. Rahman, Christos Themistos, Muttukrishnan Rajarajan, Kenneith Grattan

Proceedings Volume 6373, 63730Q (2006) https://doi.org/10.1117/12.686682

KEYWORDS: Scanning probe microscopy, Interfaces, Metals, Waveguides, Dielectrics, Silicon, Terahertz radiation, Surface plasmons, Signal attenuation, Optical fibers

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Proceedings Article | 23 May 2006 Paper

Reliability of fibre Bragg gratings in polymer optical fibre

H. Dobb, K. Carroll, D. Webb, K. Kalli, M. Komodromos, C. Themistos, G. Peng, A. Argyros, M. C. J. Large, M. van Eijkelenborg, M. Arresy, S. Kukureka

Proceedings Volume 6193, 61930Q (2006) https://doi.org/10.1117/12.662313

KEYWORDS: Fiber Bragg gratings, Phase only filters, Polymers, Optical fibers, Polymethylmethacrylate, Silica, Reliability, Annealing, Temperature metrology, Polishing

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Proceedings Article | 19 April 2006 Paper

Grating based devices in polymer optical fibre

H. Dobb, K. Carroll, D. Webb, K. Kalli, M. Komodromos, C. Themistos, G. Peng, A. Argyros, M. Large, M. van Eijkelenborg, Q. Fang, I. Boyd

Proceedings Volume 6189, 618901 (2006) https://doi.org/10.1117/12.662306

KEYWORDS: Fiber Bragg gratings, Phase only filters, Polymers, Silica, Optical fibers, Polymethylmethacrylate, Sensors, Optical filters, Fabry–Perot interferometers, Temperature metrology

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Proceedings Article | 15 February 2006 Paper

Enhanced spectral sensitivity of fibre long-period gratings to refractive index of aqueous solutions utilising copper patterned coatings

T. Allsop, H. Dobb, R. Neal, K. Kalli, C. Themistos, B.M.A. Rahman, D. Webb, D. Mapps, I. Bennion

Proceedings Volume 6083, 60830S (2006) https://doi.org/10.1117/12.647515

KEYWORDS: Copper, Cladding, Refractive index, Signal attenuation, Waveguides, Fiber coatings, Metals, Finite element methods, Modeling, Control systems

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Proceedings Article | 18 August 2004 Paper

Design issues for directional coupler- and MMI-based optical microring resonator filters on InP

Christos Themistos, Kyriacos Kalli, Michalis Komodromos, Muttukrishnan Rajarajan, B. M. Rahman, Kenneth Grattan

Proceedings Volume 5451, (2004) https://doi.org/10.1117/12.545760

KEYWORDS: Waveguides, Resonators, Microrings, Brain-machine interfaces, Directional couplers, Optical filters, Wave propagation, Multimode interference devices, Finite element methods, Beam propagation method

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Proceedings Article | 14 August 2003 Paper

Polarization issues in optoelectronic systems

B. M. Azizur Rahman, Salah Obayya, Niranthi Somasiri, Muttukrishnan Rajarajan, Christos Themistos, Kenneth Grattan

Proceedings Volume 5246, (2003) https://doi.org/10.1117/12.512513

KEYWORDS: Polarization, Waveguides, Wave propagation, Metals, Polarizers, Cladding, Silica, Beam propagation method, Optoelectronics, Photon polarization

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Proceedings Article | 25 July 2003 Paper

Design issues for optical microring filters on deeply etched GaInAsP-InP waveguides

Christos Themistos, Muttukrishnan Rajarajan, Kyriacos Kalli, Michalis Komodromos, B. Rahman, Kenneth Grattan

Proceedings Volume 4986, (2003) https://doi.org/10.1117/12.474391

KEYWORDS: Waveguides, Resonators, Microrings, Wave propagation, Optical filters, Finite element methods, Refractive index, Beam propagation method, Optical design, Scattering

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Proceedings Article | 19 June 2003 Paper

Design issues for an ultracompact tapered MMI coupler based on 3-dB splitter

Muttukrishnan Rajarajan, Christos Themistos, Kyriacos Kalli, Michalis Komodromos, B. Rahman, Kenneth Grattan

Proceedings Volume 4987, (2003) https://doi.org/10.1117/12.474359

KEYWORDS: Brain-machine interfaces, Beam propagation method, Integrated optics, Numerical analysis, Finite element methods, Transmittance, Waveguides

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Proceedings Article | 25 September 2001 Paper

Design considerations for MMI-based WDM devices using straight AWG with variable width difference

Christos Themistos, B. Rahman, Kenneth Grattan

Proceedings Volume 4417, (2001) https://doi.org/10.1117/12.441355

KEYWORDS: Waveguides, Wavelength division multiplexing, Beam propagation method, Phase shifts, Multimode interference devices, Brain-machine interfaces, Finite element methods, Integrated optics, Polarization, Wave propagation

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Proceedings Article | 29 December 1999 Paper

Finite element modeling of photonic devices

B. Rahman, Najm Anwar, M. Meyer, Muttukrishnan Rajarajan, Christos Themistos, Tiparatana Wongcharoen, Kenneth Grattan

Proceedings Volume 4016, (1999) https://doi.org/10.1117/12.373623

KEYWORDS: Waveguides, Finite element methods, Photonic devices, Refractive index, Optical filters, Polarization, Polarizers, Chemical elements, Semiconductor lasers, Electro optics

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Proceedings Article | 28 April 1999 Paper

Rigorous characterization of photonic devices using the finite element method

B. Rahman, Muttukrishnan Rajarajan, Tiparatana Wongcharoen, Ferdinand Katsriku, Christos Themistos, P. Buah, M. Meyer, Kenneth Grattan

Proceedings Volume 3666, (1999) https://doi.org/10.1117/12.347917

KEYWORDS: Waveguides, Finite element methods, Photonic devices, Beam propagation method, Refractive index, Polarization, Optical filters, Photonic integrated circuits, Polarizers, Metals

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Showing 5 of 21 publications

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