Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Paul M. Blanchard"'
Autor:
Grzegorz Targowski, Henry White, Michał Leszczyński, Tadeusz Suski, Robert Czernecki, Robert Kucharski, Scott Watson, Przemyslaw Wisniewski, M. Boćkowski, S. P. Najda, P. Perlin, Paul M. Blanchard, M. A. Watson, L. Marona, Anthony Kelly
Publikováno v:
Free-Space Laser Communication and Atmospheric Propagation XXVIII.
Gallium Nitride laser diodes fabricated from the AlGaInN material system is an emerging technology for laser sources from the UV to visible and is a potential key enabler for new system applications such as free-space (underwater & air bourne links)
Autor:
Paul M. Blanchard, Mike Leszczynski, Piotr Perlin, Lucja Marona, Scott Watson, Stephen P. Najda, M. A. Watson, Antony E. Kelly, Robert Czernecki, Henry White
Publikováno v:
SPIE Newsroom.
Autor:
L. Marona, M. Boćkowski, Grzegorz Targowski, Tadeusz Suski, Robert Kucharski, Michał Leszczyński, Henry White, Scott Watson, M. A. Watson, Anthony Kelly, P. Perlin, Paul M. Blanchard, Przemyslaw Wisniewski, Robert Czernecki, S. P. Najda
Publikováno v:
SPIE Proceedings.
The AlGaInN material system allows for laser diodes to be fabricated over a very wide range of wavelengths from u.v., ~380nm, to the visible ~530nm, by tuning the indium content of the laser GaInN quantum well. We consider the suitability of AlGaInN
Autor:
Chris Stace, Stephen P. Najda, Paul M. Blanchard, Piotr Perlin, Anthony Kelly, M. A. Watson, Scott Watson, Henry White, Lucja Marona, Priya K. Bhogul, Manousos Valyrakis
Publikováno v:
Unmanned/Unattended Sensors and Sensor Networks X.
We report on an investigation into optical alignment and tracking for high bandwidth, laser-based underwater optical communication links. Link acquisition approaches (including scanning of narrow laser beams versus a wide-angle ‘beacon’ approach)
Autor:
William N. MacPherson, Tim A. Birks, James G. Burnett, P. St. J. Russell, Roy McBride, Brian Joseph Mangan, Jonathan Knight, M. J. Gander, Alan H. Greenaway, Paul M. Blanchard, Julian D. C. Jones
Publikováno v:
Optics Communications. 193:97-104
We demonstrate an all-fibre curvature sensor that uses two-core photonic crystal fibre (PCF) as the sensing element. The PCF acts as a two-beam interferometer in which phase difference is a function of curvature in the plane containing the cores. A b
Autor:
Alan H. Greenaway, Paul M. Blanchard
Publikováno v:
Optics Communications. 183:29-36
A technique, using a distorted diffraction grating, which enables the simultaneous imaging of multiple object planes side-by-side on a single camera is described. The chromatic properties of the imaging system are discussed and a modification to allo
Publikováno v:
Strain. 36:127-133
Optically broadband interferometric techniques have been developed into cost effective and practical systems that enable the discrimination of strain and temperature in fibre optic sensors. Recent developments of temperature-insensitive strain and sh
Autor:
G R G Erry, P. St. J. Russell, Julian D. C. Jones, James G. Burnett, Jonathan Knight, Paul Harrison, Roy McBride, Alan H. Greenaway, Paul M. Blanchard, Brian Joseph Mangan, M. J. Gander
Publikováno v:
ResearcherID
Measurement of two-dimensional bending in a structural element using intrinsic optical fibre strain gauges would normally require three sensors to be attached to, or embedded within, the structure. The same measurement can now be made using a single
Publikováno v:
Journal of Lightwave Technology. 17:418-425
Passive millimeter-wave imaging requires large apertures to achieve an angular resolution comparable to that of typical infrared imagers. Aperture synthesis offers a route to achieving high resolution without using a single large aperture, by interfe
Autor:
Lin Zhang, Gordon M. H. Flockhart, William N. MacPherson, James G. Burnett, Ian Bennion, Julian D. C. Jones, Roy McBride, Alan H. Greenaway, Paul M. Blanchard, M. J. Gander
Publikováno v:
Fourteenth International Conference on Optical Fiber Sensors.
We describe the measurements of curvature made using Bragg gratings written in separate cores of a multicore optical fibre. The gratings act as independent, but isothermal, strain gauges. Thus the difference in Bragg wavelength between the gratings p