Dr. Nathaniel Groothoff Profile

Dr. Nathaniel Groothoff

Product Development Manager at Coherent, Inc.

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Author

Publications (9)

Proceedings Article | 31 January 2012 Paper

Generating and sensing signals for quantum cryptography using phase encoding in compact silica-on-silicon Mach-Zehnder circuits with Bragg gratings

M. Kristensen, T. Balle, J. Selchau, K. Sigvardt, N. Groothoff

Proceedings Volume 8351, 83510X (2012) https://doi.org/10.1117/12.914310

KEYWORDS: Transmitters, Modulation, Fiber Bragg gratings, Sensors, Receivers, Computer programming, Integrated optics, Signal generators, Quantum cryptography, Phase shifts

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Proceedings Article | 5 October 2009 Paper

Optical fibre Bragg gratings for high temperature sensing

J. Canning, M. Stevenson, K. Cook, M. Aslund, W. Ecke, R. Willsch, H. Bartelt, H. Kalinowski, L. Grabarski, V. Oliveira, C. Martelli, A. Braga, N. Groothoff, G.-D. Peng

Proceedings Volume 7503, 75032N (2009) https://doi.org/10.1117/12.834470

KEYWORDS: Optical fibers, Femtosecond phenomena, Silica, Fiber Bragg gratings, Cladding, Sensors, Glasses, Sapphire, Structural health monitoring, Temperature metrology

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Proceedings Article | 20 May 2009 Paper

Bragg grating writing in photonic crystal fibres

Kevin Cook, John Canning, Alexandre A. Pohl, John Holdsworth, Michael Stevenson, Somnath Bandyopadhyay, Nathaniel Groothoff

Proceedings Volume 7357, 73570H (2009) https://doi.org/10.1117/12.820588

KEYWORDS: Ferroelectric materials, Photonic crystal fibers, Fiber Bragg gratings, Scattering, Cladding, Luminescence, Germanium, Hydrogen, Liquids, Absorption

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Proceedings Article | 16 May 2008 Paper

Technique for estimating the tuning speed of fiber Bragg gratings

Alexandre A. Pohl, Paulo Neves, Roberson Oliveira, Michael Stevenson, Nathaniel Groothoff, John Canning

Proceedings Volume 7004, 70041I (2008) https://doi.org/10.1117/12.785769

KEYWORDS: Actuators, Optical filters, Spectrum analysis, Fiber Bragg gratings, Sensors, Calibration, Wavefront sensors, Time metrology, Transducers, Oscilloscopes

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Proceedings Article | 16 May 2008 Paper

10 kHz linewidth distributed feedback photonic crystal fibre (DFB-PCF) laser

Jason De Iuliis, Nathaniel Groothoff, John Holdsworth, John Canning, Cicero Martelli, Andrew Michie, Stuart Jackson

Proceedings Volume 7004, 70042I (2008) https://doi.org/10.1117/12.785958

KEYWORDS: Signal to noise ratio, Fiber amplifiers, Optical amplifiers, Photonic crystal fibers, Polarization, Birefringence, Fiber lasers, Erbium, Laser crystals, Erbium lasers

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Proceedings Article | 11 January 2008 Paper

Photodarkening study of gratings written into rare-earth doped optical fibres using a femtosecond laser

Mattias Åslund, Nemanja Jovanovic, Nathaniel Groothoff, John Canning, Graham Marshall, Stuart Jackson, Alex Fuerbach, Michael Withford

Proceedings Volume 6800, 68000V (2008) https://doi.org/10.1117/12.760829

KEYWORDS: Refractive index, Femtosecond phenomena, Modulation, Fiber Bragg gratings, Scattering, Annealing, Light scattering, Laser scattering, Ytterbium, Mie scattering

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Proceedings Article | 23 May 2005 Paper

DFB photonic crystal fiber (DFB-PCF) laser in Er3+ doped air-silica structured optical fibre

Nathaniel Groothoff, John Canning, Hugh Inglis, Tom Ryan, Katja Lyytikainen, Justin Digweed

Proceedings Volume 5855, (2005) https://doi.org/10.1117/12.623497

KEYWORDS: Optical fibers, Photonic crystal fibers, Silica, Fiber Bragg gratings, Sensors, Structured optical fibers, Fiber lasers, Erbium, Laser crystals, Phase shifts

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Proceedings Article | 23 May 2005 Paper

Bragg gratings in photonic crystal fibers: strain and temperature chacterization

Cicero Martelli, John Canning, Nathaniel Groothoff, Katja Lyytikainen

Proceedings Volume 5855, (2005) https://doi.org/10.1117/12.623403

KEYWORDS: Optical fibers, Refractive index, Photonic crystal fibers, Silica, Fiber Bragg gratings, Cladding, Sensors, Solids, Erbium, Temperature metrology

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Proceedings Article | 23 May 2005 Paper

High temperature resistant fibre Bragg gratings using standard boron-codoped germanosilicate fibre

Nathaniel Groothoff, John Canning

Proceedings Volume 5855, (2005) https://doi.org/10.1117/12.624217

KEYWORDS: Optical fibers, Modulation, Fiber Bragg gratings, Sensors, Ultraviolet radiation, Annealing, Diffusion, Resistance, Reflectivity, Standards development

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Showing 5 of 9 publications

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