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

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

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

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

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

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

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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: Photonic crystal fibers, Laser crystals, Structured optical fibers, Fiber lasers, Erbium, Sensors, Optical fibers, Silica, Fiber Bragg gratings, 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: Photonic crystal fibers, Fiber Bragg gratings, Silica, Cladding, Solids, Sensors, Erbium, Optical fibers, Refractive index, 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: Fiber Bragg gratings, Optical fibers, Resistance, Sensors, Annealing, Reflectivity, Standards development, Ultraviolet radiation, Modulation, Diffusion

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Showing 5 of 9 publications

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