Prof. Kyriacos Kalli Profile

Prof. Kyriacos Kalli

Associate Professor at Cyprus Univ of Technology

SPIE Involvement:

Conference Chair | Track Chair | Editor | Author

Publications (116)

Proceedings Article | 31 May 2023 Poster + Paper

A method of fitting BOTDA data for the estimation of the Brillouin frequency shift

Michael Komodromos, Alexis Polycarpou, Andreas Ioannou, Maria Argyrou, Kyriacos Kalli

Proceedings Volume 12572, 125721Z (2023) https://doi.org/10.1117/12.2670521

KEYWORDS: Signal to noise ratio, Data acquisition, Tolerancing, Temperature metrology, Computing systems, Tunable filters, Sensing systems, Laser frequency, Data analysis, Statistical analysis

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Proceedings Article | 31 May 2023 Presentation + Paper

Application of machine learning on optical fibre distributed sensing for power line applications

Kyriacos Kalli, Andreas Ioannou, Georgios Panaretou, Charalambos Kouzoupou, Maria Argyrou, Sotirios Chatzis, Michalis Agathocleous, Antreas Dionysiou, Efstathios Stavrakis, Nicolas Nicolaou

Proceedings Volume 12572, 125720Q (2023) https://doi.org/10.1117/12.2666050

KEYWORDS: Optical fibers, Temperature metrology, Machine learning, Optical fiber cables, Education and training, Data modeling, Sensing systems, Optical transmission, Optical sensing, Calibration

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Proceedings Article | 31 May 2023 Poster + Paper

EAC power distribution line cable monitoring using state-of-the-art distributed sensing instruments

Andreas Ioannou, Maria Argyrou, Charalambos Kouzoupou, Kyriacos Kalli, Pierpaolo Marchesini, Michael Mondanos, Rumen Karaulanov, Andreas Stavrou, Antreas Dionysiou, Michalis Agathocleous, Efstathios Stavrakis, Nicolas Nicolaou, Alexis Polycarpou, Michael Komodromos

Proceedings Volume 12572, 125721M (2023) https://doi.org/10.1117/12.2666048

KEYWORDS: Optical fibers, Optical fiber cables, Temperature metrology, Sensing systems, Optical sensing, Optical transmission, Equipment, Environmental sensing, Vibration, Power consumption

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Proceedings Article | 30 May 2023 Paper

Femtosecond laser written ZBLAN tilted fibre Bragg grating for mode-locked mid-infrared laser applications

A. Theodosiou, O. Henderson-Sapir, Kyriacos Kalli

Proceedings Volume 12573, 1257303 (2023) https://doi.org/10.1117/12.2663742

KEYWORDS: ZBLAN, Mode locking, Femtosecond phenomena, Mid-IR, Fiber lasers, Polarization, Fiber Bragg gratings, Polarizers, Laser applications, Photonics

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Proceedings Article | 30 May 2023 Paper

Signal processing treatments for static and dynamic Brillouin distributed sensing

A. Theodosiou, C. Kouzoupou, A. Ioannou, M. Komodromos, K. Kalli

Proceedings Volume 12573, 125730T (2023) https://doi.org/10.1117/12.2665050

KEYWORDS: Fiber Bragg gratings, Demodulation, Signal processing, Optical fibers, Spatial resolution, Sensors, Mathematical optimization, Temperature metrology, Reflection, Materials properties

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Proceedings Article | 30 May 2023 Paper

Humidity responsivity of CYTOP-XYLEX fibre Bragg grating sensors

A. Ioannou, A. Pospori, K. Kalli

Proceedings Volume 12573, 1257304 (2023) https://doi.org/10.1117/12.2664544

KEYWORDS: Sensors, Humidity, Fiber Bragg gratings, Polymers, Bragg wavelengths, Fiber optics sensors, Polymer optical fibers, Relative humidity

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Proceedings Article | 30 May 2023 Paper

Post-radiation effects of core pumped monolithic holmium-doped silica fibre lasers

A. Theodosiou, L. Koutsokeras, A. Ioannou, A. Stancalie, C. Negut, J. Aubrecht, P. Peterka, G. Constantinides, K. Kalli

Proceedings Volume 12573, 125730U (2023) https://doi.org/10.1117/12.2665051

KEYWORDS: Fiber lasers, Fiber Bragg gratings, Laser radiation, Silica, Raman spectroscopy, Optical fibers, Holmium, Annealing, Temperature metrology, Spectroscopy

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Proceedings Article | 30 May 2023 Poster + Paper

Elimination of temperature cross-sensitivity for polymer FBG-based humidity sensor by gamma radiation treatment

Ivan Chapalo, Andrei Gussarov, Karima Chah, Andreas Ioannou, Andreas Pospori, Ying-Gang Nan, Kyriacos Kalli, Patrice Mégret

Proceedings Volume 12573, 1257315 (2023) https://doi.org/10.1117/12.2671965

KEYWORDS: Fiber Bragg gratings, Polymer optical fibers, Gamma radiation, Polymers, Sensors, Polymeric sensors, Humidity, Femtosecond phenomena

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Proceedings Article | 23 May 2023 Paper

Power cable simulation of failure through temperature monitoring of optical fibres with a state-of-the-art distributed sensing instrument

Andreas Ioannou, Andreas Metaxas, Maria Argyrou, Charalambos Kouzoupou, Kyriacos Kalli, Sotirios Chatzis, Georgios Panaretou, Pierpaolo Marchesini, Michael Mondanos, Rumen Karaulanov, Michalis Agathocleous, Antreas Dionysiou, Efstathios Stavrakis, Nicolas Nicolaou

Proceedings Volume 12643, 1264325 (2023) https://doi.org/10.1117/12.2678087

KEYWORDS: Optical fibers, Optical fiber cables, Optical transmission, Optical sensing, Temperature metrology, Failure analysis, Sensing systems, Device simulation, Reflection, Equipment

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Proceedings Article | 23 May 2023 Paper

Temperature and RH response of polymer CYTOP FBG treated by gamma radiation

Ivan Chapalo, Andrei Gusarov, Karima Chah, Andreas Ioannou, Andreas Pospori, Ying-Gang Nan, Kyriacos Kalli, Patrice Mégret

Proceedings Volume 12643, 1264305 (2023) https://doi.org/10.1117/12.2678326

KEYWORDS: Fiber Bragg gratings, Polymers, Polymer optical fibers, Gamma radiation, Sensors, Vacuum chambers, Relative humidity, Climatology, Fiber optics sensors, Fiber optics

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Proceedings Article | 23 May 2023 Paper

Concrete curing monitoring using polymer optical fibre Bragg grating sensors

A. Pospori, A. Ioannou, J. Melo, P. Antunes, H. Varum, C. A. Marques, K. Kalli

Proceedings Volume 12643, 126430H (2023) https://doi.org/10.1117/12.2678107

KEYWORDS: Civil engineering, Sensors, Optical fibers, Prototyping, Polymers, Polymeric sensors, Bragg gratings, Optical sensing, Moisture, Bragg wavelengths

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Proceedings Article | 19 May 2022 Presentation + Paper

Femtosecond laser modified Fabry-Pérot interferometer optical fibre tip sensor for monitoring dissolved oxygen

Andreas Ioannou, Sotia Zavrou, Aristi Christofi, KyriaKos Kalli

Proceedings Volume 12140, 121400E (2022) https://doi.org/10.1117/12.2623694

KEYWORDS: Sensors, Oxygen, Refractive index, Femtosecond phenomena, Optical fibers, Sodium, Interferometers, Fiber Bragg gratings, Water, Temperature metrology

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Proceedings Article | 19 May 2022 Presentation + Paper

Perfluorinated polymer fibre Bragg grating sensors for distributed low-dose clinical X-ray measurements

O. Olusoji, W. Kam, A. Ioannou, A. Posporis, F. McGuinness, P. Woulfe, K. Kalli, S. O'Keeffe

Proceedings Volume 12140, 121400K (2022) https://doi.org/10.1117/12.2624440

KEYWORDS: Fiber Bragg gratings, X-rays, Optical fibers, Sensors, Radiation effects, Polymers, Radiotherapy, Reflectometry, Polymeric sensors, Tissues

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Proceedings Article | 19 May 2022 Presentation + Paper

Pre-strain effects on CYTOP fibre Bragg grating temperature sensors

A. Posporis, A. Ioannou, K. Kalli

Proceedings Volume 12140, 121400J (2022) https://doi.org/10.1117/12.2624501

KEYWORDS: Sensors, Temperature metrology, Fiber Bragg gratings, Polymers, Optical fibers, Silica, Polymeric sensors, Humidity, Cladding

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Proceedings Article | 19 May 2022 Presentation + Paper

Plastic scintillator-based fibre dosimeters for measurement of X-ray pulses in a clinical setting

W. Kam, A. Ioannou, M. Martyn, F. Sullivan, A. Pospori, P. Woulfe, K. Kalli, S. O'Keeffe

Proceedings Volume 12140, 121400D (2022) https://doi.org/10.1117/12.2624516

KEYWORDS: Sensors, X-rays, Scintillators, Radiotherapy, Femtosecond phenomena, Radiation effects, Polymethylmethacrylate, Oscilloscopes

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Proceedings Article | 17 May 2022 Paper

Monitoring the temperature and vibration response of underground optical fibres collocated with the EAC power distribution cables using state-of-the-art distributed sensing instruments

Andreas Ioannou, Charalambos Kouzoupou, Maria Argyrou, Kyriacos Kalli, Pierpaolo Marchesini, Michael Mondanos, Rumen Karaulanov, Andreas Stavrou, Marios Papaconstantinou

Proceedings Volume 12139, 121391M (2022) https://doi.org/10.1117/12.2624375

KEYWORDS: Optical fibers, Temperature metrology, Optical fiber cables, Sensing systems, Calibration, Climatology, Distribution cables, Raman spectroscopy, Head, Data conversion

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Proceedings Article | 17 May 2022 Paper

Machine learning applied to BOTDR optical fibre distributed sensing in a controlled environment

Andreas Ioannou, Charalambos Kouzoupou, Maria Argyrou, Kyriacos Kalli, Adam Lantos, Sotirios Chatzis

Proceedings Volume 12139, 121391O (2022) https://doi.org/10.1117/12.2624532

KEYWORDS: Optical fibers, Temperature metrology, Machine learning, Optical fiber cables, Calibration, Sensing systems, Optical sensing, Data modeling, Binary data, Neural networks

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Proceedings Article | 18 April 2021 Presentation + Paper

Radiation induced effects on FBGs using different femtosecond laser inscription methods

A. Theodosiou, A. Leal-Junior, C. Marques, A. Frizera, A. J. Fernandes, A. Stancalie, A. Ioannou, D. Negut, K. Kalli

Proceedings Volume 11773, 117730P (2021) https://doi.org/10.1117/12.2592376

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Proceedings Article | 18 April 2021 Presentation + Paper

Developments in laser processing of optical fibre radiation sensors

Andreas Ioannou, Aristi Christofi, Sotia Zavrou, Kyriacos Kalli, David Jackson, Wern Kam, Peter Woulfe, Sinead O’Keeffe, Francis Sullivan

Proceedings Volume 11773, 117730Q (2021) https://doi.org/10.1117/12.2592483

KEYWORDS: Sensors, Optical fibers, Laser processing, Laser development, Scintillators, Compound parabolic concentrators, Solar concentrators, Radiation dosimetry, Polymers, Polymer optical fibers

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Proceedings Article | 18 April 2021 Presentation + Paper

Holmium monolithic fiber lasers: an investigation of the fiber Bragg grating spatial dimensions on fiber laser performance

Antreas Theodosiou, Jan Aubrecht, Pavel Peterka, Kyriacos Kalli

Proceedings Volume 11773, 117730L (2021) https://doi.org/10.1117/12.2592374

KEYWORDS: Fiber lasers, Fiber Bragg gratings, Holmium, Laser systems engineering, Single mode fibers, Optical design, Laser damage threshold, High power fiber lasers, Fiber coatings, Femtosecond phenomena

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Proceedings Article | 21 April 2020 Presentation + Paper

Multimode CYTOP fiber interferometric response to laser wavelength scanning

Ivan Chapalo, Alexander Petrov, Antreas Theodosiou, Kyriacos Kalli, Oleg Kotov

Proceedings Volume 11355, 113550X (2020) https://doi.org/10.1117/12.2559459

KEYWORDS: Interferometry, Fiber Bragg gratings, Multimode fibers, Speckle pattern, Interferometers

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Proceedings Article | 1 April 2020 Paper

Femtosecond laser inscribed Mach-Zehnder Interferometer: a compound all-in-fiber versatile sensing device

Andreas Ioannou, Antreas Theodosiou, Christophe Caucheteur, Kyriacos Kalli

Proceedings Volume 11355, 113550N (2020) https://doi.org/10.1117/12.2553050

KEYWORDS: Fiber Bragg gratings, Cladding, Humidity, Femtosecond phenomena, Refractive index, Waveguides, Sensors, Mach-Zehnder interferometers, Structured optical fibers, Temperature metrology

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Proceedings Article | 1 April 2020 Paper

Advanced concrete optical remote sensors: structural health monitoring of concrete buildings using polymer sensors

Antreas Theodosiou, Pericles Savva, Constantinos Aivaliotis, Charalampos Erotokritou, Harris Partaourides, Constantinos Louca, Michael Petrou, Kyricos Kalli

Proceedings Volume 11355, 1135503 (2020) https://doi.org/10.1117/12.2557800

KEYWORDS: Sensors, Polymers, Humidity, Temperature metrology, Polymeric sensors, Fiber Bragg gratings, Phase only filters, Structural health monitoring, Buildings, Climatology

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Proceedings Article | 1 April 2020 Paper

Detection of water, oil and oil contamination in water using chirped fiber Bragg gratings inscribed in CYTOP fibers

Arnaldo Leal, Vinicius Campos, Antreas Theodosiou, Anselmo Frizera, Kyriacos Kalli, Carlos Marques

Proceedings Volume 11355, 1135513 (2020) https://doi.org/10.1117/12.2558483

KEYWORDS: Sensors, Contamination, Fiber Bragg gratings, Minerals, Polymer optical fibers, Absorption, Femtosecond phenomena, Temperature metrology, Optical fibers, Polymers

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Proceedings Article | 1 April 2020 Paper

Femtosecond laser written long period grating in a multimode CYTOP polymer fibre

Antreas Theodosiou, Rui Min, Arnaldo Leal, Andreas Ioannou, Anselmo Frizera-Neto, Maria Jose Pontes, Carlos Marques, Kyriacos Kalli

Proceedings Volume 11355, 1135502 (2020) https://doi.org/10.1117/12.2557804

KEYWORDS: Polymers, Humidity, Femtosecond phenomena, Sensors, Cladding, Temperature metrology, Fiber Bragg gratings, Gradient-index optics, Polymeric sensors, Optical sensors

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Proceedings Article | 28 August 2019 Paper

Multi-core optical fibre shape sensing with femtosecond laser inscribed bridging cladding waveguides

K. Kalli, A. Theodosiou, S. Stojanovic, Andreas Ioannou

Proceedings Volume 11199, 1119931 (2019) https://doi.org/10.1117/12.2540418

KEYWORDS: Waveguides, Fiber Bragg gratings, Optical fibers, Sensors, Femtosecond phenomena, Cladding, Optical sensing, Calibration, Fusion splicing, Pulsed laser operation

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Proceedings Article | 28 August 2019 Paper

Carbon coated FBGs inscribed using the plane-by-plane femtosecond laser inscription method

Antreas Theodosiou, Kyriacos Kalli, Andy Gillooly, Andreas Ioannou

Proceedings Volume 11199, 111992Z (2019) https://doi.org/10.1117/12.2540157

KEYWORDS: Carbon, Fiber Bragg gratings, Femtosecond phenomena, Temperature metrology, Optical fibers, Reflection, Fiber coatings, Sensors, Pulsed laser operation, Environmental sensing

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Proceedings Article | 28 August 2019 Paper

Fibre cladding interferometers and Bragg gratings made via plane by plane femtosecond laser inscription

A. Theodosiou, A. Ioannou, K. Kalli

Proceedings Volume 11199, 1119930 (2019) https://doi.org/10.1117/12.2540158

KEYWORDS: Waveguides, Cladding, Sensors, Fiber Bragg gratings, Femtosecond phenomena, Humidity, Bragg gratings, Optical fibers, Interferometers, Refractive index

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Proceedings Article | 28 August 2019 Paper

Multimode fiber interferometer with embedded long period grating

Ivan Chapalo, Antreas Theodosiou, Kyriacos Kalli, Oleg Kotov

Proceedings Volume 11199, 111990Q (2019) https://doi.org/10.1117/12.2541291

KEYWORDS: Interferometers, Multimode fibers, Speckle pattern, Fiber optics sensors, Sensors, Photonics, Single mode fibers, Optical sensors

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Proceedings Article | 28 August 2019 Paper

Weaved distributed fiber optic sensor system (DIFOS) for global strain measurements in parachute broadcloth fabrics

Edgar Mendoza, John Porhaska, Sebastian Mendoza, Ted Andreas, Yan Esterkin, John Bazin, Peter Hill, Andreas Theodosiou, Kyriacos Kalli

Proceedings Volume 11199, 111992K (2019) https://doi.org/10.1117/12.2541458

KEYWORDS: Polymer optical fibers, Fiber optics sensors, Sensors, Optical fibers, Fiber optics, Mars, Optics manufacturing, Glasses, Fiber Bragg gratings, Structured optical fibers

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Proceedings Article | 28 August 2019 Paper

Multimode CYTOP fiber interferometer: an experimental study

Ivan Chapalo, Antreas Theodosiou, Kyriacos Kalli, Oleg Kotov

Proceedings Volume 11199, 111990P (2019) https://doi.org/10.1117/12.2541287

KEYWORDS: Speckle pattern, Multimode fibers, Interferometers, Sensors, Single mode fibers, Fiber optics sensors, Polymers, Silica

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Proceedings Article | 16 April 2019 Paper

Femtosecond laser plane-by-plane Bragg gratings for monolithic Thulium-doped fibre laser operating at 1970 nm

Antreas Theodosiou, Jan Aubrecht, Pavel Peterka, Kyriacos Kalli

Proceedings Volume 11029, 110290F (2019) https://doi.org/10.1117/12.2524911

KEYWORDS: Fiber lasers, Fiber Bragg gratings, Femtosecond phenomena, Laser damage threshold, Free space, Reflectivity, Mirrors, Bragg gratings, Thulium, Laser applications

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Proceedings Article | 4 September 2018 Paper

Monolithic Er/Yb double-clad fibre laser with FBG inscribed using the direct-write plane-by-plane fs-laser inscription method

Jan Aubrecht , Antreas Theodosiou, Pavel Peterka, Ivan Kašík, Filip Todorov, Ondřej Moravec, Pavel Honzátko, Kyriacos Kalli

Proceedings Volume 10683, 1068304 (2018) https://doi.org/10.1117/12.2306522

KEYWORDS: Fiber Bragg gratings, Fiber lasers, Femtosecond phenomena, Erbium, Reflectivity, Kidney, Ytterbium, Absorption, Laser damage threshold, Cladding

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Proceedings Article | 23 May 2018 Presentation

Weaved distributed fiber optic sensors for high performance smart textile fabrics (Conference Presentation)

Edgar Mendoza, John Prohaska, Yan Esterkin, Ted Andreas, Kyriacos Kalli, Antreas Theodosiou, John Bazin

Proceedings Volume 10681, 106810P (2018) https://doi.org/10.1117/12.2316483

KEYWORDS: Fiber optics sensors, Optics manufacturing, Manufacturing

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Proceedings Article | 9 May 2018 Paper

Sensing capabilities of higher order cladding modes

Andreas Ioannou, Antreas Theodosiou, Kyriacos Kalli, Christophe Caucheteur

Proceedings Volume 10680, 106801S (2018) https://doi.org/10.1117/12.2306736

KEYWORDS: Cladding, Refractive index, Femtosecond phenomena, Temperature metrology, Fiber Bragg gratings, Optical fibers, Modulation, Spectrum analysis, Telecommunications, Single mode fibers

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Proceedings Article | 9 May 2018 Presentation + Paper

L-band CYTOP Bragg gratings for ultrasound sensing

Christian Broadway, Kyriacos Kalli, Andreas Theodosiou, Michal Zubel, Kate Sugden, Patrice Megret, Christophe Caucheteur

Proceedings Volume 10681, 1068109 (2018) https://doi.org/10.1117/12.2307129

KEYWORDS: Ultrasonography, Bragg gratings, Phase only filters, L band, Sensors, Polymers, Acoustics, Diagnostics, Ultrasonics, Endoscopy

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Proceedings Article | 23 April 2017 Paper

Health monitoring of carbon cantilever using femtosecond laser inscribed FBG array in gradient-index CYTOP polymer fibre

Antreas Theodosiou, Kyriacos Kalli, Michael Komodromos

Proceedings Volume 10323, 103232T (2017) https://doi.org/10.1117/12.2263524

KEYWORDS: Fiber Bragg gratings, Sensors, Femtosecond phenomena, Polymers, Carbon, Vibrometry, Beam shaping, Polymeric sensors, Optical fibers, Silica

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Proceedings Article | 23 April 2017 Paper

Femtosecond laser processing of optical fibres for novel sensor development

Kyriacos Kalli, Antreas Theodosiou, Andreas Ioannou, Amedee Lacraz

Proceedings Volume 10323, 103232S (2017) https://doi.org/10.1117/12.2263523

KEYWORDS: Optical fibers, Fiber Bragg gratings, Sensors, Waveguides, Femtosecond phenomena, Structured optical fibers, Cladding, Polymer optical fibers, Silica, Polymers

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SPIE Journal Paper | 14 March 2017 Open Access

Femtosecond laser micromachining of compound parabolic concentrator fiber tipped glucose sensors

Hafeez Ul Hassan, Amédée Lacraz, Kyriacos Kalli, Ole Bang

JBO, Vol. 22, Issue 03, 037003, (March 2017) https://doi.org/10.1117/12.10.1117/1.JBO.22.3.037003

KEYWORDS: Compound parabolic concentrators, Sensors, Glucose, Luminescence, Zemax, Fiber optics sensors, Femtosecond phenomena, Micromachining, Phase only filters, Femtosecond laser micromachining

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Proceedings Article | 30 May 2016 Paper

Modified femtosecond laser inscription method for tailored grating sensors in encapsulated silica and low-loss polymer optical fibres

Kyriacos Kalli, Amedee Lacraz, Andreas Theodosiou, Marios Kofinas

Proceedings Volume 9916, 99162C (2016) https://doi.org/10.1117/12.2237002

KEYWORDS: Optical fibers, Sensors, Femtosecond phenomena, Polymers, Polymeric sensors, Silica, Fiber Bragg gratings, Optical filters, Glasses, Reliability, Polymer optical fibers, Gradient-index optics

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Proceedings Article | 30 May 2016 Paper

Fabrication and characterisation of FBG sensors in low loss polymer optical fibre

Amédée Lacraz, Andreas Theodosiou, Michalis Polis, Kyriacos Kalli

Proceedings Volume 9916, 991620 (2016) https://doi.org/10.1117/12.2236834

KEYWORDS: Polymer optical fibers, Fiber Bragg gratings, Refractive index, Polymers, Optical fibers, Femtosecond phenomena, Polymeric sensors, Phase only filters, Sensors, Fiber lasers, Photorefractive polymers, Polymethylmethacrylate

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Proceedings Article | 29 April 2016 Paper

Strain sensing with femtosecond inscribed FBGs in perfluorinated polymer optical fibers

P. Stajanca, A. Lacraz, K. Kalli, M. Schukar, K. Krebber

Proceedings Volume 9899, 989911 (2016) https://doi.org/10.1117/12.2225081

KEYWORDS: Fiber Bragg gratings, Polymer optical fibers, Polymers, Sensors, Visible radiation, Multimode fibers, Fiber optics sensors, Spectrometers, Light emitting diodes, Polymethylmethacrylate, CCD cameras

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Proceedings Article | 28 April 2016 Paper

Comparative study of multimode CYTOP graded index and single-mode silica fibre Bragg grating array for the mode shape capturing of a free-free metal beam

A. Theodosiou, M. Polis, A. Lacraz, K. Kalli, M. Komodromos, A. Stassis

Proceedings Volume 9886, 98860O (2016) https://doi.org/10.1117/12.2230792

KEYWORDS: Fiber Bragg gratings, Silica, Metals, Beam shaping, Femtosecond phenomena, Polymers, Sensors, Optical fibers, Polymeric sensors, Gradient-index optics

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Proceedings Article | 28 April 2016 Paper

Femtosecond laser waveguide and FBG inscription in four-core optical fibre

Antreas Theodosiou, Andreas Ioannou, Michael Polis, Amédée Lacraz, Charalambos Koutsides, Kyriacos Kalli

Proceedings Volume 9886, 98860F (2016) https://doi.org/10.1117/12.2230801

KEYWORDS: Waveguides, Fiber Bragg gratings, Optical fibers, Femtosecond phenomena, Waveguide lasers, Sensors, Cladding, Fusion splicing, Spectroscopy, Fiber couplers

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Proceedings Article | 28 April 2016 Paper

Beam-shaping via femtosecond laser-modified optical fibre end faces

A. Ioannou, M. Polis, A. Lacraz, A. Theodosiou, K. Kalli

Proceedings Volume 9886, 98860J (2016) https://doi.org/10.1117/12.2230806

KEYWORDS: Diffraction, Optical fibers, Femtosecond phenomena, Binary data, Silica, Structured optical fibers, Diffraction gratings, Beam shaping, Visible radiation, Nondiffracting beams

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Proceedings Article | 28 September 2015 Paper

Oscillatory behaviour in Type IA FBG: ruling out chemical complexity

George Simpson, Kyriacos Kalli, John Canning, Amedee Lacraz

Proceedings Volume 9634, 96345L (2015) https://doi.org/10.1117/12.2195101

KEYWORDS: Absorption, Ultraviolet radiation, Germanium, Fiber Bragg gratings, Modulation, Optical fibers, Structured optical fibers, Hydrogen, Glasses, Diffusion

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Proceedings Article | 28 September 2015 Paper

Multi FBG femtosecond laser inscription in FPI based pressure sensors for temperature distribution

Sven Poeggel, Dinesbabu Duraibabu, Amedee Lacraz, Kyriacos Kalli, Daniele Tosi, Gabriel Leen, Elfed Lewis

Proceedings Volume 9634, 96342N (2015) https://doi.org/10.1117/12.2190008

KEYWORDS: Fiber Bragg gratings, Sensors, Temperature metrology, Femtosecond phenomena, Glasses, Radiofrequency ablation, Cancer, Oncology, Liver, Spatial resolution

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Proceedings Article | 28 September 2015 Paper

Femtosecond laser inscription of Bragg and complex gratings in coated and encapsulated silica and low-loss polymer optical fibers

Kyriacos Kalli, Amedee Lacraz, Michael Polis, Andreas Othonos

Proceedings Volume 9634, 96343N (2015) https://doi.org/10.1117/12.2195627

KEYWORDS: Femtosecond phenomena, Polymer optical fibers, Fiber Bragg gratings, Silica, Optical fibers, Sensors, Fiber optics sensors, Glasses, Gradient-index optics, Optical filters

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Proceedings Article | 28 August 2015 Paper

Localized surface plasmon fiber device coated with carbon nanotubes for the specific detection of CO2

T. Allsop, R. Arif, R. Neal, K. Kalli, V. Kundrát, A. Rozhin, P. Culverhouse, D. Webb

Proceedings Volume 9555, 95550S (2015) https://doi.org/10.1117/12.2187557

KEYWORDS: Sensors, Carbon dioxide, Refractive index, Surface plasmons, Polarization, Coating, Fiber optics sensors, Ultraviolet radiation, Carbon nanotubes, Atmospheric sensing

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Proceedings Article | 7 May 2015 Paper

Microfluidic flow and heat transfer and their influence upon optical modes in microstructure fibres

E. Davies, P. Christodoulides, G. Florides, K. Kalli

Proceedings Volume 9507, 950708 (2015) https://doi.org/10.1117/12.2185163

KEYWORDS: Water, Micro optical fluidics, Glasses, Microfluidics, Thermal optics, Refractive index, Optical fibers, Finite element methods, Temperature metrology, Optical properties

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Proceedings Article | 7 May 2015 Paper

Bragg grating inscription in CYTOP polymer optical fibre using a femtosecond laser

A. Lacraz, M. Polis, A. Theodosiou, C. Koutsides, K. Kalli

Proceedings Volume 9507, 95070K (2015) https://doi.org/10.1117/12.2185161

KEYWORDS: Fiber Bragg gratings, Polymers, Optical fibers, Sensors, Femtosecond phenomena, Absorption, Polymethylmethacrylate, Near infrared, Polymeric sensors, Biosensing

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Proceedings Article | 2 June 2014 Paper

An ultra-sensitive localised surface plasmon resonance fibre device for environmental sensing based upon a structured bi-metal coating

T. Allsop, R. Neal, C. Mou, K. Kalli, D. Webb

Proceedings Volume 9157, 91574M (2014) https://doi.org/10.1117/12.2059085

KEYWORDS: Polarization, Surface plasmons, Structured optical fibers, Coating, Refractive index, Ultraviolet radiation, Thin films, Plasmons, Environmental sensing, Platinum

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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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Proceedings Article | 7 March 2014 Paper

Flexible glass flat-fibre chips and femtosecond laser inscription as enabling technologies for photonic devices

Christos Riziotis, Kyriacos Kalli, Christos Markos, Andreas Posporis, Charalambos Koutsides, Andrew Webb, Christopher Holmes, James Gates, Jayanta Sahu, Peter G. Smith

Proceedings Volume 8982, 89820G (2014) https://doi.org/10.1117/12.2039643

KEYWORDS: Resonators, Microfluidics, Femtosecond phenomena, Fiber Bragg gratings, Structured optical fibers, Glasses, Polishing, Mach-Zehnder interferometers, Integrated optics, Optical fibers

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Proceedings Article | 15 October 2013 Paper

Femtosecond laser inscription and micromachining in novel flexible glass flat-fibre chips

K. Kalli, C. Markos, A. Posporis, C. Koutsides, C. Riziotis, A. Webb, J. Sahu, C. Holmes, J. Gates, P. G. Smith

Proceedings Volume 8924, 89240Z (2013) https://doi.org/10.1117/12.2035403

KEYWORDS: Resonators, Femtosecond phenomena, Microfluidics, Fiber Bragg gratings, Micromachining, Glasses, Structured optical fibers, Optical fibers, 3D image processing, Polishing

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Proceedings Article | 26 September 2013 Paper

Generation and performance of localised surface plasmons utilising nano-scale structured multi-layered thin films deposited upon D-shaped optical fiber

T. Allsop, R. Neal, C. Mou, M. Dvorak, A. Rozhin, K. Kalli, D. Webb

Proceedings Volume 8816, 881613 (2013) https://doi.org/10.1117/12.2023926

KEYWORDS: Ultraviolet radiation, Surface plasmons, Polarization, Optical fibers, Refractive index, Optical coatings, Metals, Thin films, Silica, Gold

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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 | 17 October 2012 Paper

Femtosecond laser microstructuring through optical fibre end faces: inscription of surface gratings and sub-surface splitters

Graham C. Lee, Kyriacos Kalli, Charalambos Koutsides, Michael Komodromos, Kate Sugden

Proceedings Volume 8421, 842111 (2012) https://doi.org/10.1117/12.968395

KEYWORDS: Femtosecond phenomena, Structured optical fibers, Optical fibers, Diffraction, Diffraction gratings, Light sources, Fiber optics sensors, Cladding, Fourier optics, Fiber couplers

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Proceedings Article | 17 October 2012 Paper

Highly sensitive type IA fiber Bragg gratings as sensors in radiation environments

A. Faustov, P. Saffari, C. Koutsides, A. Gusarov, M. Wuilpart, P. Mégret, L. Zhang, K. Kalli

Proceedings Volume 8421, 842153 (2012) https://doi.org/10.1117/12.975186

KEYWORDS: Fiber Bragg gratings, Annealing, Sensors, Environmental sensing, Ionizing radiation, Picosecond phenomena, Temperature metrology, Radiation effects, Optical design, Hydrogen

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Proceedings Article | 17 October 2012 Paper

Femtosecond laser inscribed phase masks for fibre Bragg grating sensor inscription

Graham Lee, Kyriacos Kalli, Charalambos Koutsides, Zhijun Yan, Adedotun Adebayo, Michael Komodromos, Kate Sugden

Proceedings Volume 8421, 84214V (2012) https://doi.org/10.1117/12.975102

KEYWORDS: Fiber Bragg gratings, Femtosecond phenomena, Photomasks, Diffraction, Ultraviolet radiation, Sensors, Optical fibers, Laser energy, Diffraction gratings, Profilometers

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Proceedings Article | 9 May 2012 Paper

Modeling microfluidic flow and heat transfer in circular and elliptical channels in microstructure fibres

Paul Christodoulides, Georgios Florides, Michael Komodromos, Kyriacos Kalli

Proceedings Volume 8426, 84261P (2012) https://doi.org/10.1117/12.927084

KEYWORDS: Microfluidics, Fluid dynamics, Water, Convection, Optical fibers, Heat flux, Finite element methods, Waveguides, Sensors, Structured optical fibers

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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 | 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 | 31 January 2012 Paper

Hydrostatic pressure sensing using a polymer optical fibre Bragg gratings

Ian Johnson, David Webb, Kyriacos Kalli

Proceedings Volume 8351, 835106 (2012) https://doi.org/10.1117/12.914391

KEYWORDS: Fiber Bragg gratings, Optical fibers, Silica, Phase only filters, Sensors, Polymers, Adhesives, Ultraviolet radiation, Polymethylmethacrylate, Optical fabrication

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Proceedings Article | 29 November 2011 Paper

Photonic crystal fibre Bragg grating based sensors: opportunities for applications in healthcare

Francis Berghmans, Thomas Geernaert, Sanne Sulejmani, Hugo Thienpont, Geert Van Steenberge, Bram Van Hoe, Peter Dubruel, Waclaw Urbanczyk, Pawel Mergo, David Webb, Kyriacos Kalli, Jan Van Roosbroeck, Kate Sugden

Proceedings Volume 8311, 831102 (2011) https://doi.org/10.1117/12.901240

KEYWORDS: Sensors, Fiber Bragg gratings, Polymers, Phase only filters, Optical fibers, Polymeric sensors, Silica, Fiber optics sensors, Photonic crystal fibers, Medicine

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