Roger Helkey
Roger Helkey
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Cited by
Cited by
Short pulse generation using multisegment mode-locked semiconductor lasers
DJ Derickson, RJ Helkey, A Mar, JR Karin, JG Wasserbauer, JE Bowers
IEEE Journal of Quantum Electronics 28 (10), 2186-2202, 1992
Global positioning system receiver digital processing technique
RG Lorenz, RJ Helkey, KK Abadi
US Patent 5,293,170, 1994
Techniques and performance of intensity-modulation direct-detection analog optical links
C Cox, E Ackerman, R Helkey, GE Betts
IEEE Transactions on Microwave theory and techniques 45 (8), 1375-1383, 1997
Global positioning system receiver digital processing technique
RG Lorenz, RJ Helkey, KK Abadi
US Patent 5,134,407, 1992
Global positioning system receiver with improved radio frequency and digital processing
J Ashjaee, RJ Helkey, RG Lorenz, RA Sutherland
US Patent 4,928,106, 1990
Micro-electro-mechanical-system (MEMS) mirror device
J Bowers, R Helkey, C Corbalis, R Sink, S Lee, N MacDonald
US Patent App. 09/497,270, 2002
Sparse aperiodic arrays for optical beam forming and LIDAR
T Komljenovic, R Helkey, L Coldren, JE Bowers
Optics express 25 (3), 2511-2528, 2017
Optical cross-connect switch with integrated optical signal tap
R Helkey, J Bowers, T Walter, K Yamada, D Welsh
US Patent 6,668,108, 2003
Ultrafast dynamics in field‐enhanced saturable absorbers
JR Karin, RJ Helkey, DJ Derickson, R Nagarajan, DS Allin, JE Bowers, ...
Applied Physics Letters 64 (6), 676-678, 1994
2D optical switch
MJ Little, JJ Lyon, JE Bowers, R Helkey
US Patent 6,396,976, 2002
Three-dimensional MEMS photonic cross-connect switch design and performance
X Zheng, V Kaman, S Yuan, Y Xu, O Jerphagnon, A Keating, ...
IEEE Journal of Selected Topics in Quantum Electronics 9 (2), 571-578, 2003
Phase-encoded optical sampling for analog-to-digital converters
JC Twichell, R Helkey
IEEE Photonics Technology Letters 12 (9), 1237-1239, 2000
Method and apparatus for network diagnostics in a passive optical network
RJ Helkey, V Kaman
US Patent App. 12/148,913, 2009
A down-conversion optical link with RF gain
R Helkey, JC Twichell, C Cox
Journal of lightwave technology 15 (6), 956-961, 1997
Mode-locked operation of a master oscillator power amplifier
A Mar, R Helkey, J Bowers, D Mehuys, D Welch
IEEE photonics technology letters 6 (9), 1067-1069, 1994
Dynamic detuning in actively mode-locked semiconductor lasers
PA Morton, RJ Helkey, JE Bowers
IEEE journal of quantum electronics 25 (12), 2621-2633, 1989
A 32-element 8-bit photonic true-time-delay system based on a 288 x 288 3-D MEMS optical switch
V Kaman, X Zheng, RJ Helkey, C Pusarla, JE Bowers
IEEE Photonics Technology Letters 15 (6), 849-851, 2003
Multi-wavelength selective crossbar switch
ASP Khope, M Saeidi, R Yu, X Wu, AM Netherton, Y Liu, Z Zhang, Y Xia, ...
Optics express 27 (4), 5203-5216, 2019
Micro-electro-mechanical-system (MEMS) mirror device and methods for fabricating the same
JE Bowers, RJ Helkey, C Corbalis, RK Sink, SB Lee, N MacDonald
US Patent 6,563,106, 2003
High-performance photonic integrated circuits on silicon
R Helkey, AAM Saleh, J Buckwalter, JE Bowers
IEEE Journal of Selected Topics in Quantum Electronics 25 (5), 1-15, 2019
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