Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Dennis S. Greywall"'
Autor:
Dennis S. Greywall
Publikováno v:
Journal of Micromechanics and Microengineering. 16:N1-N7
This paper proposes a segmented mirror design for adaptive optics that utilizes novel actuators to raise the effective pivot point of each mirror element to the midpoint of the element's top surface. This permits a fill factor near 100%. The piston,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::093844f4029689ad4a4d2734e8f12df8
https://doi.org/10.1088/0960-1317/16/3/n01
https://doi.org/10.1088/0960-1317/16/3/n01
Autor:
Dennis S Greywall
Publikováno v:
Measurement Science and Technology. 16:2473-2482
This paper proposes a novel scheme for measuring magnetic field strength that can be optimized to detect very small changes about a given local level. The device consists simply of an oscillator employing a high-Q nonlinear mechanical resonator carry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4dacec1add05a57b81bc1b63ac52e84
https://doi.org/10.1088/0957-0233/16/12/011
https://doi.org/10.1088/0957-0233/16/12/011
Autor:
Maria Elina Simon, Dennis S. Greywall, Nagesh R. Basavanhally, Flavio Pardo, David T. Neilson, Dan M. Marom, Chien-Shing Pai, Paul Kolodner, D.O. Lopez, C. Bolle, Y. Low, Vladimir A. Aksyuk
Publikováno v:
Journal of Lightwave Technology. 23:1620-1630
The design and performance of several generations of wavelength-selective 1/spl times/K switches are reviewed. These optical subsystems combine the functionality of a demultiplexer, per-wavelength switch, and multiplexer in a single, low-loss unit. F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17a69301f95e2592fb136f7d44d8b956
https://doi.org/10.1109/jlt.2005.844213
https://doi.org/10.1109/jlt.2005.844213
Autor:
David A. Ramsey, Dennis S. Greywall, Flavio Pardo, David T. Neilson, D.O. Lopez, P. Busch, Chien-Shing Pai, Hong Tang, Nagesh R. Basavanhally, Yee L. Low, Martin Haueis, L. Ko, John David Weld, Roland Ryf, J. Prybyla, R.E. Scotti
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 10:563-569
This paper describes the design and performance of a 64-channel equalization and blocking filter. It utilizes a free space lens and grating multiplexer with micromechanical tilt mirrors providing variable attenuation. The module achieves a 5-dB inser
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::824e9050d1bdf9c241353548ca292cc2
https://doi.org/10.1109/jstqe.2004.828488
https://doi.org/10.1109/jstqe.2004.828488
Autor:
Chien-Shing Pai, P.A. Busch, W.Y.C. Lai, Joseph Ashley Taylor, Hyongsok Tom Soh, Dan M. Marom, J.E. Bower, F. Klemens, R. Cirelli, Chorng-Ping Chang, Sang Hyun Oh, T.W. Sorsch, Dennis S. Greywall
Publikováno v:
Journal of Microelectromechanical Systems. 12:702-707
A new approach is presented for fabricating monolithic crystalline silicon tilting-mirror microoptoelectromechanical systems (MOEMS) devices. The activation electrodes, etched from a thick silicon layer deposited over insulating oxide onto the top su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0cd360a03cc06f3ff56f29b0e277135
https://doi.org/10.1109/jmems.2003.818068
https://doi.org/10.1109/jmems.2003.818068
Autor:
D. Carr, Herbert Shea, R. Frahm, Clinton Randy Giles, David J. Bishop, Ho Bun Chan, Dennis S. Greywall, Victor A. Lifton, C. Bolle, David T. Neilson, S. Arney, M. Paczkowski, Flavio Pardo, Maria Elina Simon, A. Gasparyan, R. Ryf, Vladimir A. Aksyuk, Jungsang Kim, M. Haueis
Publikováno v:
Journal of Lightwave Technology. 21:634-642
This paper describes Si-micromachined two-axis beam-steering micromirrors and their performance in 256 /spl times/ 256- and 1024 /spl times/ 1024-port large optical cross-connects (OXCs). The high-reflectivity wavelength-independent mirrors are elect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c98a8d918160ad4acf9de9d25cecb404
https://doi.org/10.1109/jlt.2003.811792
https://doi.org/10.1109/jlt.2003.811792
Autor:
Dennis S. Greywall, Paul A. Busch
Publikováno v:
Journal of Micromechanics and Microengineering. 12:925-938
This paper treats the theoretical and experimental behavior of coupled mechanical resonators viewed as potential elements of high-Q electromechanical bandpass filters. The benefits of the novel placement of the resonators in a closed ring are discuss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::286bb16f99c64c52a240810a841b50ff
https://doi.org/10.1088/0960-1317/12/6/325
https://doi.org/10.1088/0960-1317/12/6/325
Autor:
Dennis S. Greywall
Publikováno v:
Sensors and Actuators A: Physical. 75:257-268
A design is proposed for a micromachined microphone which utilizes optical interference to sense the sound-induced motion of a thin diaphragm. The light source and detector can be included as components of the device or can be at a remote location an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17af136118ac7b77bad657a4c5518cb6
https://doi.org/10.1016/s0924-4247(99)00156-9
https://doi.org/10.1016/s0924-4247(99)00156-9
Autor:
Dennis S. Greywall
Publikováno v:
Journal of Micromechanics and Microengineering. 9:78-84
A design is proposed for a high-Q rf band-pass filter whose active element is a micromachined mechanical resonator. The device is located in a large magnetic field created by a miniature permanent magnet and can be configured to operate at frequencie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8843fc1c8700db262818aae7393ef24
https://doi.org/10.1088/0960-1317/9/1/310
https://doi.org/10.1088/0960-1317/9/1/310
Publikováno v:
Sensors and Actuators A: Physical. 72:49-70
Simple analytic expressions are presented which describe the gas-damping of squeeze-type micromechanical structures and which set design criteria for optimum response. The model is shown to accurately represent experimental data obtained for a device
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d83ccbdc19ad57e6b2f303a0883c749
https://doi.org/10.1016/s0924-4247(98)00203-9
https://doi.org/10.1016/s0924-4247(98)00203-9