Solomon Assefa  Solomon Assefa photo       

contact information

Director
IBM Research - Africa

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2015

On-chip detection of non-classical light by scalable integration of single-photon detectors
Faraz Najafi, Jacob Mower, Nicholas C Harris, Francesco Bellei, Andrew Dane, Catherine Lee, Xiaolong Hu, Prashanta Kharel, Francesco Marsili, Solomon Assefa, others
Nature communications6, Nature Publishing Group, 2015


2014

Controlled light-matter interaction in graphene electro-optic devices using nanophotonic cavities and waveguides
Xuetao Gan, R-j Shiue, Yuanda Gao, Solomon Assefa, James Hone, Dirk Englund
2014 - ieeexplore.ieee.org, IEEE

Binary phase-shift keying by coupling modulation of microrings
Wesley D Sacher, William MJ Green, Douglas M Gill, Solomon Assefa, Tymon Barwicz, Marwan Khater, Edward Kiewra, Carol Reinholm, Steven M Shank, Yurii A Vlasov, others
Optics express 22(17), 20252--20259, Optical Society of America, 2014

Breaking the Conventional Limitations of Microrings
Joyce K Poon, Wesley D Sacher, Jared C Mikkelsen, Solomon Assefa, Douglas M Gill, Tymon Barwicz, Huapu Pan, Steven M Shank, Yurii Vlasov, William M Green
CLEO: Science and Innovations, pp. SM3G--1, 2014

A linear push-pull silicon optical modulator
Chi Xiong, Douglas Gill, Jessie Rosenberg, Marwan Khater, Tymon Barwicz, Solomon Assefa, Steve Shank, Carol Reinholm, Ed Kiewra, John Ellis-Monaghan, others
Frontiers in Optics, pp. FM3A--4, 2014

Monolithic Travelling-Wave Mach-Zehnder Transmitter with High-Swing Stacked CMOS Driver
D Gill, J Proesel, C Xiong, J Rosenberg, M Khater, T Barwicz, S Assefa, S Shank, C Reinholm, E Kiewra, J Ellis-Monaghan, S Kamlapurkar, W Green, Y Vlasov
Conference on Lasers & Electro-optics (CLEO), pp. SM2G--3, 2014

Scalable single-photon detection on a photonic chip
Faraz Najafi, Jacob C Mower, Nicholas C Harris, Francesco Bellei, Andrew Dane, Catherine Lee, Solomon Assefa, Karl K Berggren, Dirk Englund
CLEO: QELS\_Fundamental Science, pp. FM3A--8, 2014

Monolithic silicon integration of scaled photonic switch fabrics, CMOS logic, and device driver circuits
Benjamin G Lee, Alexander V Rylyakov, William MJ Green, Solomon Assefa, Christian W Baks, Renato Rimolo-Donadio, Daniel M Kuchta, Marwan H Khater, Tymon Barwicz, Carol Reinholm, others
Journal of Lightwave Technology 32(4), 743--751, IEEE, 2014

Distributed Electrode Mach-Zehnder Modulator with Double-Pass Phase Shifters and Integrated Inductors
D Gill, W Green, C Xiong, J Proesel, A Rylyakov, C Schow, J Rosenberg, T Barwicz, M Khater, S Assefa, S Shank, C Reinholm, E Kiewra, S Kamlapurkar, Y Vlasov
Conference on Lasers & Electro-optics (CLEO), pp. STh4M--6, 2014


2013

Chip-integrated ultrafast graphene photodetector with high responsivity
Xuetao Gan, Ren-Jye Shiue, Yuanda Gao, Inanc Meric, Tony F Heinz, Kenneth Shepard, James Hone, Solomon Assefa, Dirk Englund
Nature Photonics 7(11), 883--887, Nature Publishing Group, 2013

Mid-infrared silicon photonics
William Green, Bart Kuyken, Xiaoping Liu, Mackenzie Van Camp, Solomon Assefa, Douglas Gill, Tymon Barwicz, Steven Shank, Yurii Vlasov, Richard Osgood, others
Optical Fiber Communication Conference, pp. OTh4I--7, 2013

A 16-Channel Monolithic Silicon Nanophotonic Receiver
Solomon Assefa, Huapu Pan, Steven Shank, Alexander Rylyakov, Clint Schow, William MJ Green, Marwan Khater, Swetha Kamlapurkar, Edward Kiewra, Carol Reinholm, others
Photonics Conference (IPC), 2013 IEEE, pp. 309--310

Dense CMOS-Photonics Integration in sub-100nm Technology Node
Solomon Assefa, Steven Shank, William MJ Green, Alexander Rylyakov, Clint Schow, Marwan Khater, Swetha Kamlapurkar, Edward Kiewra, Carol Reinholm, Yurii Vlasov
OptoElectronics and Communications Conference and Photonics in Switching, pp. TuN2\_1, 2013

Amplifying the voice of youth in Africa via text analytics
Prem Melville, Vijil Chenthamarakshan, Richard D Lawrence, James Powell, Moses Mugisha, Sharad Sapra, Rajesh Anandan, Solomon Assefa
Proceedings of the 19th ACM SIGKDD international conference on Knowledge discovery and data mining, pp. 1204--1212, 2013

Coupling modulation of microrings at rates beyond the linewidth limit
WD Sacher, WMJ Green, S Assefa, T Barwicz, H Pan, SM Shank, YA Vlasov, JKS Poon
Optics express 21(8), 9722--9733, Optical Society of America, 2013

Monolithically integrated photonic switches driven by digital CMOS
Benjamin G Lee, William M Green, Alexander V Rylyakov, Solomon Assefa, Marwan H Khater, Tymon Barwicz, Carol Reinholm, Edward Kiewra, Steven M Shank, Clint L Schow, others
CLEO: Science and Innovations, pp. CTu1L--1, 2013



Cascaded Mach-Zehnder wavelength filters in silicon photonics for low loss and flat pass-band WDM (de-) multiplexing
Folkert Horst, William MJ Green, Solomon Assefa, Steven M Shank, Yurii A Vlasov, Bert Jan Offrein
Optics express 21(10), 11652--11658, Optical Society of America, 2013


2012

Demonstration of electrooptic modulation at 2165nm using a silicon Mach-Zehnder interferometer
Mackenzie A Van Camp, Solomon Assefa, Douglas M Gill, Tymon Barwicz, Steven M Shank, Philip M Rice, Teya Topuria, William MJ Green
Optics express 20(27), 28009--28016, Optical Society of America, 2012

A 90nm CMOS Integrated Nano-Photonics Technology for 25Gbps WDM Optical Communications Applications
S Assefa, S Shank, W Green, M Khater, E Kiewra, C Reinholm, S Kamlapurkar, A Rylyakov, C Schow, F Horst, H Pan, T Topuria, P Rice, D M Gill, J Rosenberg, T Barwicz, M Yang, J Proesel, J Hofrichter, B Offrein, X Gu, W Haensch, J Ellis-Monaghan, Y Vlasov
IEEE International Electron Devices Meeting (IEDM), pp. 33--8, 2012

Silicon Nanophotonic Mid-IR Optical Modulator
M.A. Van Camp, S. Assefa, D.M. Gill, T. Barwicz, S.M. Shank, Y.A. Vlasov, W.M. Green
CLEO: Science and Innovations, 2012

Heralded single photons from silicon coupled-resonator optical waveguides
J.R. Ong, M. Davanco, A.B. Shehata, A. Tosi, I. Agha, S. Assefa, F. Xia, W.M.J. Green, K. Srinivasan, S. Mookherjea
Group IV Photonics (GFP), 2012 IEEE 9th International Conference on, pp. 3--5

Heralded single photons from a silicon nanophotonic chip
J.R. Ong, M. Davanco, A.B. Shehata, A. Tosi, I. Agha, S. Assefa, F. Xia, Y.A. Vlasov, W.M. Green, K. Srinivasan, others
CLEO: Science and Innovations, 2012

Telecommunications-band heralded single photons from a silicon nanophotonic chip
M. Davan\c{c}o, J.R. Ong, A.B. Shehata, A. Tosi, I. Agha, S. Assefa, F. Xia, W.M.J. Green, S. Mookherjea, K. Srinivasan
Applied Physics Letters 100(26), 261104--261104, AIP, 2012

Silicon Photonic Switches Hybrid-Integrated With CMOS Drivers
A V Rylyakov, C L Schow, B G Lee, W M J Green, S Assefa, F E Doany, M Yang, J Van Campenhout, C V Jahnes, J A Kash, Y.Vlasov
Solid-State Circuits, IEEE Journal of 47(99), 1--1, IEEE, 2012

Slow light enhancement of four-wave mixing in coupled silicon-on-insulator microrings
J.R. Ong, W.M.J. Green, S. Assefa, F. Xia, S. Mookherjea
SPIE OPTO, pp. 827304--827304, 2012

Optimized light--matter interaction and defect hole placement in photonic crystal cavity sensors
C. Kang, S.M. Weiss, Y.A. Vlasov, S. Assefa
Optics Letters 37(14), 2850--2852, Optical Society of America, 2012

40Gbps Optical Receiver Based on Germanium Waveguide Photodetector Hybrid-Integrated with 90nm CMOS Amplifier
H. Pan, S. Assefa, W.M. Green, D.M. Kuchta, C.L. Schow, A.V. Rylyakov, B.G. Lee, C.W. Baks, S.M. Shank, Y.A. Vlasov
CLEO: Applications and Technology, 2012

Breaking the cavity linewidth limit of resonant optical modulators
W.D. Sacher, W.M.J. Green, S. Assefa, T. Barwicz, H. Pan, S.M. Shank, Y.A. Vlasov, J.K.S. Poon
arXiv preprint arXiv:1206.5337, 2012

High-speed receiver based on waveguide germanium photodetector wire-bonded to 90nm SOI CMOS amplifier
H. Pan, S. Assefa, W.M.J. Green, D.M. Kuchta, C.L. Schow, A.V. Rylyakov, B.G. Lee, C.W. Baks, S.M. Shank, Y.A. Vlasov
Optics Express 20(16), 18145--18155, Optical Society of America, 2012

250 Gbps 10-channel WDM silicon photonics receiver
H. Pan, S. Assefa, F. Horst, C.L. Schow, A.V. Rylyakov, W.M.J. Green, M.H. Khater, S. Kamlapurka, C. Reinholm, E. Kiewra, others
Group IV Photonics (GFP), 2012 IEEE 9th International Conference on, pp. 162--164



28 Gb/s silicon microring modulation beyond the linewidth limit by coupling modulation
W.D. Sacher, W. Green, S. Assefa, T. Barwicz, H. Pan, S. Shank, Y. Vlasov, J. Poon
Optical Fiber Communication Conference, 2012


2011

Self-phase modulation and nonlinear loss in silicon nanophotonic wires near the mid-infrared two-photon absorption edge
X. Liu, J.B. Driscoll, J.I. Dadap, R.M. Osgood, S. Assefa, Y.A. Vlasov, W.M.J. Green
Optics express 19(8), 7778--7789, Optical Society of America, 2011

Optimization of defect hole placement in resonant cavities
C. Kang, S.M. Weiss, Y.A. Vlasov, S. Assefa
Lasers and Electro-Optics (CLEO), 2011 Conference on, pp. 1--2

Optimization of Defect Hole Placement in Resonant Cavity Sensors
C. Kang, C.T. Phare, Y.A. Vlasov, S. Assefa, S.M. Weiss
CLEO: Science and Innovations, 2011

Grating couplers as optical probe pads in a standard CMOS process
J. Hofrichter, WMJ Green, F. Horst, S. Assefa, M. Yang, B. Offrein, Y. Vlasov
Group IV Photonics (GFP), 2011 8th IEEE International Conference on, pp. 127--129

Statistics of photon transport in hundreds of coupled resonators
M.L. Cooper, G. Gupta, M.A. Schneider, Y. Shen, W.M.J. Green, S. Assefa, F. Xia, Y.A. Vlasov, S. Mookherjea
Lasers and Electro-Optics (CLEO), 2011 Conference on, pp. 1--2

High-speed and low-power microring modulators for silicon photonics
JC Rosenberg, WMJ Green, S. Assefa, CL Schow, AV Rylyakov, DM Gill, BG Lee, C. Jahnes, T. Barwicz, SM Shank, others
Photonics Conference (PHO), 2011 IEEE, pp. 256--257

Silicon Electro-Optic 4x4 Non-Blocking Switch Array for On-Chip Photonic Networks
W.M. Green, M. Yang, S. Assefa, J. Van Campenhout, B.G. Lee, C. Jahnes, F.E. Doany, C. Schow, J.A. Kash, Y. Vlasov
Optical Fiber Communication Conference, 2011

WDM Filters For Silicon Photonics Transceivers
F. Horst, W.M.J. Green, S. Assefa, S.M. Shank, B.J. Offrein, Y.A. Vlasov
OptoeElectronics and Communications Conference (OECC), 2011 16th, pp. 842--844

Deeply-scaled CMOS-integrated nanophotonic devices for next generation supercomputers
S. Assefa, W.M.J. Green, A. Rylyakov, C. Schow, F. Horst, Y.A. Vlasov
Proceedings of the 21st Great lakes symposium on VLSI, pp. 475--476, 2011

Increasing bandwidth density in future optical interconnects
BG Lee, C. Baks, FE Doany, C. Jahnes, R. John, DM Kuchta, P. Pepeljugoski, AV Rylyakov, CL Schow, S. Assefa, others
Photonics Conference (PHO), 2011 IEEE, pp. 670--671

CMOS Integrated Silicon Nanophotonics for Exascale Computing
W.M. Green, S. Assefa, A. Rylyakov, C. Schow, F. Horst, Y. Vlasov
Frontiers in Optics, 2011

Ultra-dense monolithic integration of optical and electrical functions on silicon for optical interconnects
S. Assefa, W.M.J. Green, A. Rylyakov, C. Schow, F. Horst, Y.A. Vlasov
General Assembly and Scientific Symposium, 2011 XXXth URSI, pp. 1--2

Drive-noise-tolerant broadband silicon electro-optic switch
J. Van Campenhout, W.M.J. Green, S. Assefa, Y.A. Vlasov
Optics Express 19(12), 11568--11577, Optical Society of America, 2011

Intra-and inter-band four-wave mixing in silicon coupled resonator optical waveguides
J.R. Ong, M.L. Cooper, G. Gupta, W.M.J. Green, S. Assefa, F. Xia, Y.A. Vlasov, S. Mookherjea
Lasers and Electro-Optics (CLEO), 2011 Conference on, pp. 1--2

CMOS Integrated Nanophotonics for Future Computing Systems
Y.A. Vlasov
American Institute of Physics Conference Series, pp. 16--16, 2011

CMOS integrated silicon nanophotonics: An enabling technology for exascale computing
W. Green, S. Assefa, A. Rylyakov, C. Schow, F. Horst, Y. Vlasov
Integrated Photonics Research, Silicon and Nanophotonics, 2011

A 3.9 ns 8.9 mW 4x4 silicon photonic switch hybrid integrated with CMOS driver
A Rylyakov, C Schow, B Lee, W Green, J Van Campenhout, M Yang, F Doany, S Assefa, C Jahnes, J Kash, others
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2011 IEEE International, pp. 222--224

Low-power continuous-wave four-wave mixing in silicon coupled-resonator optical waveguides
J.R. Ong, M.L. Cooper, G. Gupta, W.M.J. Green, S. Assefa, F. Xia, S. Mookherjea
Optics letters 36(15), 2964--2966, Optical Society of America, 2011

Hybrid-Integrated Germanium Photodetector and CMOS Receiver Operating at 15 Gb/s
B.G. Lee, S. Assefa, C. Schow, W.M. Green, A. Rylyakov, R.A. John, J.A. Kash, Y.A. Vlasov
CLEO: Science and Innovations, 2011

Monolithic integration of CMOS and nanophotonic devices for massively parallel optical interconnects in supercomputers
S. Assefa, W.M.J. Green, A. Rylyakov, C. Schow, F. Horst, Y.A. Vlasov
Device Research Conference (DRC), 2011 69th Annual, pp. 253--256

Non-blocking 4x4 electro-optic silicon switch for on-chip photonic networks
M. Yang, W.M.J. Green, S. Assefa, J. Van Campenhout, B.G. Lee, C.V. Jahnes, F.E. Doany, C.L. Schow, J.A. Kash, Y.A. Vlasov
Optics Express 19(1), 47--54, Optical Society of America, 2011

20Gbps receiver based on germanium photodetector hybrid-integrated with 90nm CMOS amplifier
S. Assefa, B.G. Lee, C. Schow, W.M. Green, A. Rylyakov, R.A. John, Y.A. Vlasov
CLEO: Applications and Technology, 2011

Controlled coupling in silicon microrings for high-speed, high extinction ratio, and low-chirp modulation
W.D. Sacher, W.M. Green, S. Assefa, T. Barwicz, S.M. Shank, Y.A. Vlasov, J. Poon
CLEO: Applications and Technology, 2011

Demonstration of a digital CMOS driver codesigned and integrated with a broadband silicon photonic switch
B.G. Lee, C.L. Schow, A.V. Rylyakov, J. Van Campenhout, W.M.J. Green, S. Assefa, F.E. Doany, M. Yang, R.A. John, C.V. Jahnes, others
Journal of Lightwave Technology 29(8), 1136--1142, IEEE, 2011

CMOS integrated nanophotonics: Enabling technology for exascale computing systems
S. Assefa, W.M. Green, A. Rylyakov, C. Schow, F. Horst, Y. Vlasov
Optical Fiber Communication Conference, 2011

Multichannel high-bandwidth coupling of ultradense silicon photonic waveguide array to standard-pitch fiber array
F.E. Doany, B.G. Lee, S. Assefa, W.M.J. Green, M. Yang, C.L. Schow, C.V. Jahnes, S. Zhang, J. Singer, V.I. Kopp, others
Lightwave Technology, Journal of 29(4), 475--482, IEEE, 2011

Ultra-low-voltage micro-ring modulator integrated with a CMOS feed-forward equalization driver
JC Rosenberg, WMJ Green, AV Rylyakov, CL Schow, S. Assefa, B.G. Lee, C. Jahnes, YA Vlasov
Optical Fiber Communication Conference and Exposition (OFC/NFOEC), 2011 and the National Fiber Optic Engineers Conference, pp. 1--3

Low-power 30 Gbps silicon microring modulator
J.C. Rosenberg, W.M. Green, S. Assefa, T. Barwicz, M. Yang, S.M. Shank, Y.A. Vlasov
CLEO: Applications and Technology, 2011


2010

CMOS-integrated high-speed MSM germanium waveguide photodetector
Solomon Assefa, Fengnian Xia, Stephen W Bedell, Ying Zhang, Teya Topuria, Philip M Rice, Yurii A Vlasov
Optics Express 18(5), 4986--4999, Optical Society of America, 2010

Ultra-Broadband, Low-Power, 2x2 Electro-Optic Switch using Sub-Micron Silicon Waveguides
Joris Van Campenhout, William M Green, Solomon Assefa, Yurii A Vlasov
Optical Fiber Communication Conference, pp. OMP2, 2010

Deterministic tuning of slow-light in photonic-crystal waveguides through the C and L bands by atomic layer deposition
C.J. Chen, C.A. Husko, I. Meric, K.L. Shepard, C.W. Wong, W.M.J. Green, Y.A. Vlasov, S. Assefa
Applied Physics Letters 96(8), 081107--081107, AIP, 2010

Photonic crystal slab sensor with enhanced surface area
C. Kang, C.T. Phare, Y.A. Vlasov, S. Assefa, S.M. Weiss
Optics express 18(26), 27930--27937, Optical Society of America, 2010

Waveguide-integrated Germanium avalanche photodetector for low-noise and high-speed operation
S. Assefa, F. Xia, Y.A. Vlasov
Group IV Photonics (GFP), 2010 7th IEEE International Conference on, pp. 319--319

Weak exciton-photon coupling of PbS nanocrystals in air-slot mode-gap Si photonic crystal nanocavities in the near-infrared
J. Gao, F. Gesuele, W. Koh, C.B. Murray, S. Assefa, C.W. Wong
Lasers and Electro-Optics (CLEO) and Quantum Electronics and Laser Science Conference (QELS), 2010 Conference on, pp. 1--2

(Invited) Integration of Germanium Avalanche Photodetectors on Silicon for On-Chip Optical Interconnects
S. Assefa, F. Xia, Y. Vlasov
ECS Transactions 33(6), 749--756, The Electrochemical Society, 2010


Integration of Germanium Photodetectors on Silicon for On-Chip Optical Interconnects
S. Assefa, F. Xia, Y. Vlasov
Meeting Abstracts, pp. 1932--1932, The Electrochemical Society, 2010

Silicon integrated nanophotonic high-radix switch arrays for next generation computer systems
WMJ Green, S. Assefa, J. Van Campenhout, B. Lee, M. Yang, F. Doany, C. Schow, A. Rylyakov, C. Jahnes, J. Kash, others
IEEE Photonics Society, 2010 23rd Annual Meeting of the, pp. 512--513

Photonic Crystal Defects with Increased Surface Area for Improved Refractive Index Sensing
C. Kang, C. Phare, S.M. Weiss, Y.A. Vlasov, S. Assefa
Conference on Lasers and Electro-Optics, pp. 27930--27937, Optical Society of America, 2010

235-Ring Coupled-Resonator Optical Waveguides
M.L. Cooper, G. Gupta, W.M. Green, S. Assefa, F. Xia, Y.A. Vlasov, S. Mookherjea
Conference on Lasers and Electro-Optics, 2010

20-µm-pitch eight-channel monolithic fiber array coupling 160 Gb/s/channel to silicon nanophotonic chip
B. G. Lee, F. E. Doany, S. Assefa, W. Green, M. Yang, C. L. Schow, C. V. Jahnes, S. Zhang, J. Singer, V. I. Kopp, J. A. Kash, Y. A. Vlasov
Optical Fiber Communication (OFC) Conference, pp. 1--3, 2010

Ultra-broadband, low-power, 2 2 electro-optic switch using sub-micron silicon waveguides
Van Campenhout J.; Green, W.M.J. ; Assefa, S. ; Vlasov, Y.A.
Optical Fiber Communication (OFC), collocated National Fiber Optic Engineers Conference, 2010 Conference on (OFC/NFOEC), pp. 1--3

Waveguide dispersion effects in silicon-on-insulator coupled-resonator optical waveguides
M.L. Cooper, G. Gupta, M.A. Schneider, W.M.J. Green, S. Assefa, F. Xia, D.K. Gifford, S. Mookherjea
Optics letters 35(18), 3030--3032, Optical Society of America, 2010

CMOS-integrated optical receivers for on-chip interconnects
S. Assefa, F. Xia, W.M.J. Green, C.L. Schow, A.V. Rylyakov, Y.A. Vlasov
Selected Topics in Quantum Electronics, IEEE Journal of 16(5), 1376--1385, IEEE, 2010

Digital noise-tolerant silicon nanophotonic switch
J. Van Campenhout, W.M. Green, S. Assefa, Y.A. Vlasov
CLEO, 2010

Statistics of light transport in 235-ring silicon coupled-resonator optical waveguides
M.L. Cooper, G. Gupta, M.A. Schneider, W.M.J. Green, S. Assefa, F. Xia, Y.A. Vlasov, S. Mookherjea
Optics express 18(25), 26505--26516, Optical Society of America, 2010

Broadband silicon photonic switch integrated with CMOS drive electronics
B.G. Lee, J. Van Campenhout, A.V. Rylyakov, C.L. Schow, W.M. Green, S. Assefa, M. Yang, F.E. Doany, C.V. Jahnes, R.A. John, others
CLEO, 2010

Comparison of ring resonator and Mach-Zehnder photonic switches integrated with digital CMOS drivers
BG Lee, WMJ Green, J. Van Campenhout, CL Schow, AV Rylyakov, S. Assefa, M. Yang, J. Rosenberg, JA Kash, YA Vlasov
IEEE Photonics Society, 2010 23rd Annual Meeting of the, pp. 327--328

Reinventing germanium avalanche photodetector for nanophotonic on-chip optical interconnects
S. Assefa, F. Xia, Y.A. Vlasov
Nature 464(7285), 80--84, Nature Publishing Group, 2010

Integrated NiSi waveguide heaters for CMOS-compatible silicon thermo-optic devices
J. Van Campenhout, W.M.J. Green, S. Assefa, Y.A. Vlasov
Optics letters 35(7), 1013--1015, Optical Society of America, 2010


2009

Digital deterministic control of slow light in photonic crystal waveguide membranes through atomic layer deposition
C. Chen, C. Husko, I. Meric, K. Shepard, C.W. Wong, W.M. Green, Y.A. Vlasov, S. Assefa
Conference on Lasers and Electro-Optics, 2009

Heterogeneous Integration of Materials on Si for Nanophotonics Devices
S. Assefa
Bulletin of the American Physical Society54, APS, 2009

Integration of nanophotonic devices for on-chip optical interconnects
S. Assefa, F. Xia, SW Bedell, Y. Zhang, T. Topuria, P.M. Rice, Y.A. Vlasov
OptoElectronics and Communications Conference, 2009. OECC 2009. 14th, pp. 1--1


CMOS-integrated high-speed germanium waveguide photodetector for optical interconnects
S. Assefa, F. Xia, S.W. Bedell, Y. Zhang, T. Topuria, P.M. Rice, Y.A. Vlasov
Conference on Lasers and Electro-Optics, pp. 1--2, 2009

CMOS-integrated small-capacitance germanium waveguide photodetector for optical interconnects
S. Assefa, F. Xia, SW Bedell, Y. Zhang, T. Topuria, PM Rice, YA Vlasov
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on, pp. 1--2

Silicon-Nitride Surface Passivation of Sub-Micron Silicon Waveguides for Low-Power Optical Switches
J. Van Campenhout, W.M. Green, S. Assefa, Y.A. Vlasov, X. Liu, R.M. Osgood Jr, others
Conference on Lasers and Electro-Optics, pp. 1534--1536, Optical Society of America, 2009

CMOS-integrated 40GHz germanium waveguide photodetector for on-chip optical interconnects
S. Assefa, F. Xia, S.W. Bedell, Y. Zhang, T. Topuria, P.M. Rice, Y.A. Vlasov
Optical Fiber Communication Conference, 2009

Low-power, 2\^I2 silicon electro-optic switch with 110-nm bandwidth for broadband reconfigurable optical networks
J. Van Campenhout, W.M. Green, S. Assefa, Y.A. Vlasov
Optics express 17(26), 24020--24029, Optical Society of America, 2009


2008

Silicon micro-resonators for on-chip optical networks
Y.A. Vlasov, F. Xia, S. Assefa, W.M. Green
Conference on Lasers and Electro-Optics, 2008

Broadband ultra-compact nanophotonic optical modulators and switches
W. Green, S. Assefa, J. Van Campenhout, Y.H. Kim, F. Xia, Y.A. Vlasov
IEEE Lasers and Electro-Optics Society, 2008. LEOS 2008. 21st Annual Meeting of the, pp. 366--367

Slow Light in Photonic-Crystal Waveguides and Cavities
S. Assefa, F. Xia, W.M. Green, Y. Vlasov
Slow and Fast Light, 2008

Dispersion Engineering of Silicon Nanophotonic Wires Using Thin Film Over-Claddings
W.M. Green, X. Liu, X. Chen, R.M. Osgood Jr, Y.A. Vlasov, others
Conference on Lasers and Electro-Optics, pp. 1--2, 2008

Coupling into Slow-Light in Photonic Crystal Waveguides
S. Assefa, F. Xia, W.M. Green, Y. Vlasov
Quantum Electronics and Laser Science Conference, 2008

Silicon photonic wire circuits for on-chip optical interconnects
W.M.J. Green, F. Xia, S. Assefa, M.J. Rooks, L. Sekaric, Y.A. Vlasov
Proc. of SPIE Vol, pp. 688306--1, 2008

A statistical study of magnetic tunnel junctions for high-density spin torque transfer-MRAM (STT-MRAM)
R Beach, T Min, C Horng, Q Chen, P Sherman, S Le, S Young, K Yang, H Yu, X Lu, others
Electron Devices Meeting, 2008. IEDM 2008. IEEE International, pp. 1--4


2007

Ultra-compact optical buffers on a silicon chip
Y.A. Vlasov, F. Xia, L. Sekaric, W. Green, S. Assefa, M. Rooks, S. McNab
33rd European Conference and Exhibition on Optical Communication-ECOC, pp. 16--20, IEE, 2007

Fabrication and characterization of MgO-based magnetic tunnel junctions for spin momentum transfer switching
S. Assefa, J. Nowak, JZ Sun, E. OSullivan, S. Kanakasabapathy, WJ Gallagher, Y. Nagamine, K. Tsunekawa, DD Djayaprawira, N. Watanabe
Journal of Applied Physics 102(6), 063901--063901, AIP, 2007

High-order dispersion in photonic crystal waveguides
S. Assefa, Y.A. Vlasov
Optics Express 15(26), 17562--17569, Optical Society of America, 2007


2006

Materials and devices for reduced switching field toggle magnetic random access memory
DC Worledge, PL Trouilloud, MC Gaidis, Y Lu, DW Abraham, S Assefa, S Brown, E Galligan, S Kanakasabapathy, J Nowak, others
Journal of applied physics 100(7), 074506--074506, AIP, 2006

Transmission of slow light through photonic crystal waveguide bends
YA Vlasov, SJ McNab, S. Assefa
Optics letters: A publication of the Optical Society of America 31(6), 745--747, Optical Society of America, 2006

Spin Transfer Switching in sub-100nm Magnetic Tunnel Junctions
S. Assefa, JZ Sun, N. Ruiz, DC Worledge, WJ Gallagher, Y. Nagamine, DD Djayaprawira, N. Watanabe
Magnetics Conference, 2006. INTERMAG 2006. IEEE International, pp. 402--402

Two-level BEOL processing for rapid iteration in MRAM development
Michael C Gaidis, Eugene J O'Sullivan, Janusz Jozef Nowak, Yu Lu, S Kanakasabapathy, Philip Louis Trouilloud, Daniel Christopher Worledge, Solomon Assefa, Keith R Milkove, George P Wright, others
IBM journal of research and development 50(1), 41--54, IBM, 2006


2005

Silicon photonic crystals and photonic wires circuits
Y.A. Vlasov, E. Dulkeith, L. Sekaric, S. Assefa, M. O'Boyle, SJ McNab
Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on, pp. 587--587

Recent advances in MRAM technology
WJ Gallagher, D Abraham, S Assefa, SL Brown, J DeBrosse, M Gaidis, E Galligan, E Gow, B Hughes, J Hummel, others
VLSI Technology, 2005.(VLSI-TSA-Tech). 2005 IEEE VLSI-TSA International Symposium on, pp. 72--73


2004



Year Unknown


ISSCC 2011/SESSION 12/DESIGN IN EMERGING TECHNOLOGIES/12.4
A. Rylyakov, C. Schow, B. Lee, W. Green, J. Van Campenhout, M. Yang, F. Doany, S. Assefa, C. Jahnes, J. Kash, others
0

for papers in Volume 50
I. Aberg, DW Abraham, RC Agarwal, T. Agerwala, S. Amalapurapu, DA Antoniadis, S. Assefa, DF Bacon, L. Baugh, RA Becker-Szendy, others
ieeexplore.ieee.org, 0

Slow Light Transmission Through Photonic Crystal Bends
S. Assefa, S. McNab, Y.A. Vlasov
0