Dr. Kerstin Wörhoff Profile

Dr. Kerstin Wörhoff

Assistant Professor at LioniX BV

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Author

Publications (21)

Proceedings Article | 13 May 2016 Paper

Photonic hybrid assembly through flexible waveguides

K. Wörhoff, A. Prak, F. Postma, A. Leinse, K. Wu, T. J. Peters, M. Tichem, B. Amaning-Appiah, V. Renukappa, G. Vollrath, J. Balcells-Ventura, P. Uhlig, M. Seyfried, D. Rose, R. Santos, X. J. Leijtens, B. Flintham, M. Wale, D. Robbins

Proc. SPIE. 9891, Silicon Photonics and Photonic Integrated Circuits V

KEYWORDS: Thin films, Silica, Silicon, Optical fabrication, Semiconducting wafers, Assembly equipment

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Proceedings Article | 15 March 2016 Paper

Bimorph actuators in thick SiO2 for photonic alignment

Kai Wu, Tjitte-Jelte Peters, Marcel Tichem, Ferry Postma, Albert Prak, Kerstin Wörhoff, Arne Leinse

Proc. SPIE. 9753, Optical Interconnects XVI

KEYWORDS: Microelectromechanical systems, Actuators, Gold, Modeling, Silica, Waveguides, Silicon, Chromium, Finite element methods, Photonic integrated circuits, Optical alignment, Silicon photonics, Motion models

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Proceedings Article | 27 February 2015 Paper

Spiral amplifiers in a-Al2O3:Er on a silicon chip with 20 dB internal net gain

S. Vázquez-Córdova, E. Bernhardi, Ke. Wörhoff, J. Herek, S. García-Blanco, M. Pollnau

Proc. SPIE. 9365, Integrated Optics: Devices, Materials, and Technologies XIX

KEYWORDS: Optical amplifiers, Waveguides, Ions, Silicon, Doping, Amplifiers, Wavelength division multiplexing, Erbium, Neodymium, Semiconducting wafers

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Proceedings Article | 1 May 2014 Paper

Erbium-doped spiral amplifiers with 20 dB gain on a silicon chip

S. Vázquez-Córdova, E. Bernhardi, K. Wörhoff, S. García-Blanco, M. Pollnau

Proc. SPIE. 9133, Silicon Photonics and Photonic Integrated Circuits IV

KEYWORDS: Optical amplifiers, Channel waveguides, Waveguides, Silicon, Amplifiers, Semiconductor lasers, Wave propagation, Erbium, Light wave propagation, Absorption

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Proceedings Article | 18 June 2013 Paper

Advanced integrated spectrometer designs for miniaturized optical coherence tomography systems

B. Akca, B. Považay, L. Chang, A. Alex, K. Wörhoff, R. de Ridder, W. Drexler, M. Pollnau

Proc. SPIE. 8802, Optical Coherence Tomography and Coherence Techniques VI

KEYWORDS: Refractive index, Stars, Waveguides, Polarization, Imaging systems, Optical coherence tomography, Spectroscopy, In vivo imaging, System integration, Spectrometer engineering

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Proceedings Article | 6 March 2013 Paper

Rare-earth-ion-doped ultra-narrow-linewidth lasers on a silicon chip and applications to intra-laser-cavity optical sensing

E. Bernhardi, R. de Ridder, K. Wörhoff, M. Pollnau

Proc. SPIE. 8599, Solid State Lasers XXII: Technology and Devices

KEYWORDS: Waveguides, Fiber Bragg gratings, Sensors, Silicon, Laser applications, Reflectivity, Semiconductor lasers, Microwave radiation, Waveguide lasers, Phase shifts

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Proceedings Article | 2 February 2012 Paper

Biophotonic sensors on a silicon chip for Raman spectroscopy and optical coherence tomography

Markus Pollnau, Nur Ismail, B. Imran Akca, Kerstin Wörhoff, René de Ridder

Proc. SPIE. 8266, Silicon Photonics VII

KEYWORDS: Confocal microscopy, Biomedical optics, Waveguides, Polarization, Signal attenuation, Optical coherence tomography, Spectroscopy, Silicon, Raman spectroscopy, Integrated optics

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Proceedings Article | 17 January 2011 Paper

Nd-doped waveguide amplifiers for heterogeneous integration in optical backplanes

Feridun Ay, Jing Yang, Tobias Lamprecht, Kerstin Wörhoff, Sonia García-Blanco, Alfred Driessen, Folkert Horst, Bert Offrein, Markus Pollnau

Proc. SPIE. 7942, Optoelectronic Integrated Circuits XIII

KEYWORDS: Optical amplifiers, Channel waveguides, Waveguides, Signal attenuation, Polymers, Ions, Wave propagation, Integrated optics, Channel projecting optics, Polymer multimode waveguides

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Proceedings Article | 18 February 2010 Paper

Efficiency of integrated waveguide probes in the detection of fluorescence and backscattered light

N. Ismail, F. Sun, F. Civitci, K. Wörhoff, R. de Ridder, M. Pollnau, A. Driessen

Proc. SPIE. 7559, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications X

KEYWORDS: Optical fibers, Waveguides, Scattering, Luminescence, Fluorescence spectroscopy, Light scattering, Raman spectroscopy, Integrated optics, Raman scattering, Statistical modeling

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Proceedings Article | 16 February 2010 Paper

On-chip integrated lasers in Al2O3:Er on silicon

M. Pollnau, J. Bradley, F. Ay, E. Bernhardi, R. de Ridder, K. Wörhoff

Proc. SPIE. 7605, Optoelectronic Integrated Circuits XII

KEYWORDS: Optical amplifiers, Channel waveguides, Resonators, Waveguides, Output couplers, Silicon, Semiconductor lasers, Integrated optics, Erbium, Absorption

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Proceedings Article | 12 February 2010 Paper

High performance optical waveguides based on boron and phosphorous doped silicon oxynitride

Fei Sun, Alfred Driessen, Kerstin Wörhoff

Proc. SPIE. 7604, Integrated Optics: Devices, Materials, and Technologies XIV

KEYWORDS: Refractive index, FT-IR spectroscopy, Channel waveguides, Annealing, Silicon, Hydrogen, Scanning electron microscopy, Boron, Plasma enhanced chemical vapor deposition, Absorption

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Proceedings Article | 12 February 2010 Paper

Rare-earth-ion-doped Al2O3 for integrated optical amplification

K. Wörhoff, J. D. Bradley, L. Agazzi, M. Pollnau

Proc. SPIE. 7604, Integrated Optics: Devices, Materials, and Technologies XIV

KEYWORDS: Eye, Optical amplifiers, Channel waveguides, Waveguides, Polarization, Silicon, Integrated optics, Erbium, Picosecond phenomena, Absorption

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Proceedings Article | 1 May 2008 Paper

Optimization of Al2O3:Er3+ waveguide technology for active integrated optical devices

Kerstin Wörhoff, Jonathan Bradley, Feridun Ay, Dimitri Geskus, Tom Blauwendraat, Markus Pollnau

Proc. SPIE. 6996, Silicon Photonics and Photonic Integrated Circuits

KEYWORDS: Thin films, Refractive index, Optical amplifiers, Channel waveguides, Waveguides, Sputter deposition, Integrated optics, Erbium, Planar waveguides, Absorption

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Proceedings Article | 9 August 2007 Paper

Rare-earth-ion-doped Al2O3 waveguides for active integrated optical devices

Jonathan Bradley, Feridun Ay, Tom Blauwendraat, Kerstin Wörhoff, Markus Pollnau

Proc. SPIE. 6731, International Conference on Lasers, Applications, and Technologies 2007: Advanced Lasers and Systems

KEYWORDS: Optical lithography, Channel waveguides, Waveguides, Etching, Silicon, Gases, Aluminum, Erbium, Reactive ion etching, Chlorine

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Proceedings Article | 8 September 2004 Paper

Flip-chip assembly for photonic circuits

Kerstin Worhoff, Rene Heideman, Melis Jan Gilde, Kristian Blidegn, Matthias Heschel, Hans van den Vlekkert

Proc. SPIE. 5454, Micro-Optics: Fabrication, Packaging, and Integration

KEYWORDS: Packaging, Lithography, Sensors, Etching, Silicon, Integrated optics, Photonic integrated circuits, Zinc oxide, Semiconducting wafers, Standards development

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Proceedings Article | 18 August 2004 Paper

Tolerance of polarization independent waveguides for communication devices

Kerstin Worhoff, Chris Roeloffzen, Rene de Ridder, Gabriel Sengo, Lucie Hilderink, Alfred Driessen

Proc. SPIE. 5451, Integrated Optics and Photonic Integrated Circuits

KEYWORDS: Refractive index, Waveguides, Polarization, Birefringence, Cladding, Silicon, Optical communications, Integrated optics, Fiber couplers, Tolerancing

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Proceedings Article | 3 April 2003 Paper

SiON technology for integrated optical sensors

Paul Lambeck, Kerstin Worhoff

Proc. SPIE. 4944, Integrated Optical Devices: Fabrication and Testing

KEYWORDS: Refractive index, Polarization, Cladding, Sensors, Molecules, Silicon, Telecommunications, Sensing systems, Integrated optics, Semiconducting wafers

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Proceedings Article | 11 March 2003 Paper

Passband-flattened periodic multi/demultiplexer using a Mach-Zehnder interferometer with ring resonator fabricated in SiON waveguide technology

Chris Roeloffzen, Rene de Ridder, Gabriel Sengo, Kerstin Worhoff, Alfred Driessen

Proc. SPIE. 4947, Laser Diodes, Optoelectronic Devices, and Heterogenous Integration

KEYWORDS: Optical filters, Channel waveguides, Mach-Zehnder interferometers, Resonators, Waveguides, Birefringence, Dispersion, Chromium, Tunable filters, Directional couplers

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Proceedings Article | 4 December 1998 Paper

Silica-based rib waveguides for integrated optics using multimode interference

N. Lagali, R. Ian MacDonald, M. Paiam, Kerstin Woerhoff, Alfred Driessen

Proc. SPIE. 3491, 1998 International Conference on Applications of Photonic Technology III: Closing the Gap between Theory, Development, and Applications

KEYWORDS: Switches, Silica, Waveguides, Polarization, Etching, Silicon, Integrated optics, Plasma enhanced chemical vapor deposition, Brain-machine interfaces, Multimode interference devices

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Proceedings Article | 22 June 1998 Paper

Silicon-based integrated Mach-Zehnder interferometer with acousto-optic modulation: a biosensor application

Christophe Gorecki, Eric Bonnotte, Kerstin Woerhoff, Hideki Kawakatsu

Proc. SPIE. 3419, Optoelectronic Materials and Devices

KEYWORDS: Thin films, Mach-Zehnder interferometers, Modulation, Silicon, Biosensors, Transducers, Integrated optics, Zinc oxide, Acousto-optics, Thin film devices

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Proceedings Article | 24 September 1997 Paper

Optimization of LPCVD silicon oxynitride growth to large refractive index homogeneity and layer thickness uniformity

Kerstin Woerhoff, Paul Lambeck, H. Albers, Oscar Noordman, Niko van Hulst, Th. Popma

Proc. SPIE. 3099, Micro-optical Technologies for Measurement, Sensors, and Microsystems II and Optical Fiber Sensor Technologies and Applications

KEYWORDS: Thin films, Refractive index, Prisms, Waveguides, Birefringence, Silicon, Silicon films, Low pressure chemical vapor deposition, Semiconducting wafers, Protactinium

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Showing 5 of 21 publications

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