Laurent Schares  Laurent Schares photo       

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Optical Link and Systems Design
Thomas J. Watson Research Center, Yorktown Heights, NY USA
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Professional Associations

Professional Associations:  IEEE Communications Society  |  IEEE Photonics Society


2011

Optical Interconnects in Future Servers
J. A. Kash, A. Benner, F. E. Doany, D. Kuchta, B. G. Lee, P. Pepeljugoski, L. Schares, C. Schow, and M. Taubenblatt
Optical Fiber Communication Conference, paper OWQ1. , 2011


2010

Low Power and High Density Optical Interconnects for Future Supercomputers
P. Pepeljugoski, J. Kash, F. Doany, D. Kuchta, L. Schares, C. Schow, M. Taubenblatt, B. Offrein, A. Benner
Optical Fiber Communications Conference (OFC), paper OThX2, San Diego, CA, March 21-25, pp. 1--3, 2010

Optics in Future Datacenter Networks
L. Schares, D. M. Kuchta, A. F. Benner
(invited), 18th IEEE Annual Symposium on High-Performance Interconnects, Mountain View, CA, August 18-20, 2010.

Optical Interconnects in Exascale Supercomputers
J.A. Kash, A.F. Benner, F.E. Doany, D.M. Kuchta, B.G. Lee, P.K. P.Pepeljugoski, L. Schares, C.L. Schow, M. Taubenblatt
(invited), IEEE Photonics Society 23rd Annual meeting, Denver, CO, USA, Nov. 7-11, 2010.

Towards Exaflop Servers and Supercomputers: The Roadmap for Lower Power and Higher Density Optical Interconnects
P. Pepeljugoski, J. Kash, F. Doany, D. Kuchta, L. Schares, C. Schow, M. Taubenblatt, B. Offrein, A. Benner
(invited) Proc. of ˙ 36th European Conference on Optical Communications˙ (ECOC), paper Tu.4.G.3, Torino, Italy, 19-23 Sept. 2010.


2009

A reconfigurable interconnect fabric with optical circuit switch and software optimizer for stream computing systems
L. Schares, X.J. Zhang, R. Wagle, D. Rajan, P. Selo, S.P. Chang, J. Giles, K. Hildrum, D. Kuchta, J. Wolf, E. Schenfeld
Optical Fiber Communications Conference (OFC), paper OTuA1, San Diego, CA, March 22-26, pp. 1--3, 2009

Communication technologies for exascale systems
JA Kash, P. Pepeljugoski, FE Doany, CL Schow, DM Kuchta, L. Schares, R. Budd, F. Libsch, R. Dangel, F. Horst, others
SPIE OPTO: Integrated Optoelectronic Devices, pp. 72210F--72210F, 2009

160-Gb/s Bidirectional Polymer-Waveguide Board-Level Optical Interconnects Using CMOS-Based Transceivers
F E Doany, C L Schow, C W Baks, D M Kuchta, P Pepeljugoski, L Schares, R Budd, F Libsch, R Dangel, F Horst, B. J. Offrein, and J. A. Kash
IEEE TRANSACTIONS ON ADVANCED PACKAGING 32(2), 345-359, IEEE, 2009


2008

Terabus: Chip-to-chip board-level optical data buses
J. A. Kash, F. E. Doany, C. L. Schow, R. Budd, C. Baks, D. M. Kuchta, P. Pepeljugoski, L. Schares, R. Dangel, F. Horst, B. J. Offrein, C. Tsang, N. Ruiz, C. Patel, R. Horton, F. Libsch, J. U. Knickerbocker
LEOS 2008 - 21st Annual Meeting of the IEEE Lasers and Electro-Optics Society, pp. 515-516

SOA nonlinearities in 4x25 Gb/s WDM pre-amplified system for 100-Gb/s Ethernet
R Gutiérrez-Castrejón, L Schares, M Dülk
Optical and Quantum Electronics 40(13), 1005--1019, Springer, 2008

Optical Interconnects for Servers
D M Kuchta, Y Taira, C Baks, G McVicker, L Schares, H Numata
Japanese Journal of Applied Physics 47(8), 6642--6645, 2008


2007

Optical interconnects for servers
D. M. Kuchta, Y Taira, C Baks, G McVicker, L Schares, H Numata
(invited), paper E5, 13th MicroOptics Conference, Takamatsu, Kagawa, Japan, 28-31 Oct., 2007

High-Performance Optical Receivers in CMOS Using Ge-on-SOI Detectors
C L Schow, S J Koester, L Schares, R John
(invited), Frontiers in Optics: the OSA Annual Meeting - FiO-07, San Jose, CA, Sept. 16-20, 2007.

High-speed, low-voltage optical receivers consisting of Ge-on-SOI photodiodes paired with CMOS ICs
C L Schow, S J Koester, L Schares, G Dehlinger, R A John
Photonics West, paper 6477-04 (invited), San Jose, CA, USA, Jan. 20-25, pp. 647705, 2007

Data center and high performance computing interconnects for 100 Gb/s and beyond
P Pepeljugoski, F Doany, D Kuchta, L Schares, C Schow, M Ritter, J Kash
Optical Fiber Communication and the National Fiber Optic Engineers Conference, (invited), pp. 1--3, 2007

160-Gb/s bidirectional parallel optical transceiver module for board-level interconnects using a single-chip CMOS IC
FE Doany, CL Schow, C Baks, R Budd, Y J Chang, P Pepeljugoski, L Schares, D Kuchta, R John, JA Kash, F Libsch, R Dangel, F Horst, BJ Offrein
57th Electronic Technology and Components Conference, Reno, NV, USA, pp. 1256-1261, May 29 - June 1, pp. 1256--1261, 2007

160-Gb/s, 16-channel full-duplex, single-chip CMOS optical transceiver
CL Schow, FE Doany, O Liboiron-Ladouceur, C Baks, DM Kuchta, L Schares, R John, JA Kash
Optical Fiber Communication and the National Fiber Optic Engineers Conference, (invited paper), pp. 1--3, 2007

Ge-on-SOI-detector/Si-CMOS-amplifier receivers for high-performance optical-communication applications
S J Koester, C L Schow, L Schares, G Dehlinger, J D Schaub, F E Doany, R A John
Journal of Lightwave Technology 25(1), 46--57, IEEE, 2007

Terabus and beyond: Prospects of Waveguide-based Optical Interconnects
L. Schares, C. L. Schow, F. E. Doany, R. A. Budd, C. W. Baks, R. A. John, J.A. Kash, O. Liboiron-Ladouceur, R. Dangel, F. Horst, B. J. Offrein
IEEE 10th International Symposium on Contemporary Photonics Technology (CPT), invited paper E-2, Tokyo, Japan, Jan. 10-12, 2007


2006

Optical Receivers in CMOS Using Ge-on-SOI Photodiodes
CL Schow, SJ Koester, L Schares, G Dehlinger, RA John
(invited), IEEE LEOS 20th Annual meeting, paper WD1, Montreal, Canada, Oct. 29 - Nov. 2, pp. 458--459, 2006

Performance Assessment of Ge-on-SOI-photodetector/Si-CMOS Receivers for High-Speed Optical Communications
S Koester, L Schares, C L Schow, J D Schaub, G Dehlinger, F E Doany, R A John, J O Chu
ECS-transactions, vol.3, no.7, pp.99-109, 2006

Performance of Simulated Annealing Algorithm in Equalized Multimode Fiber Links With Linear Equalizers
P Pepeljugoski, J Tierno, A Risteski, S Reynolds, L Schares
IEEE Journal of Lightwave Technology, Vol. 24, No. 11, pp. 4235-4249, Nov. 24(11), 4235--4249, 2006

A 19-Gb/s, 1.8-V Optical Receiver Front-End Comprised of a Ge-on-SOI Photodiode and a CMOS Transimpedance Amplifier
CL Schow, L Schares, SJ Koester, G Dehlinger, R John
32nd European Conference on Optical Communications (ECOC), paper Th3.1.5, Cannes, France, 24-28 Sept, 2006

Group index and group velocity dispersion in silicon-on-insulator photonic wires: errata
E. Dulkeith, F. Xia, L. Schares, W.M. Green, L. Sekaric, Y.A. Vlasov
Optics express 14(13), 6372--6372, Optical Society of America, 2006

A 15-Gb/s, 2.4-V optical receiver using a Ge-on-SOI photodiode with a 0.13-um CMOS IC
CL Schow, L Schares, SJ Koester, G Dehlinger, RA John, FE Doany
IEEE Photon. Technol. Lett, Vol 18, No. 19, 1981-1983, Oct-118, 1981--1983, 2006

A 25-Gb/s transimpedance amplifier in 0.13-um CMOS
CL Schow, L Schares, RA John, LS Fischer, D Guckenberger
IEE Electron. Lett., Vol. 42, No. 21, pp. 1240-124142, 1240--1241, 2006

A 17-Gb/s low-power optical receiver using a Ge-on-SOI photodiode with a 0.13-μm CMOS IC
L Schares, CL Schow, SJ Koester, G Dehlinger, R John, FE Doany
Optical Fiber Communications (OFC), post-deadline paper PDP27, Anaheim, CA, USA, Mar. 5-10, pp. 1--3, 2006

Chip-to-chip optical interconnects
JA Kash, FE Doany, L Schares, CL Schow, C Schuster, DM Kuchta, PK Pepeljugoski, JM Trewhella, CW Baks, RA John, L Shan, YH Kwark, RA Budd, P Chiniwalla, FR Libsch, J Rosner, CK Tsang, CS Patel, JD Schaub, D Kucharski, D Guckenberger, S Hegde, et al.
(invited), Optical Fiber Communications (OFC), paper OFA3, Anaheim, CA, USA, Mar. 5-10, pp. 3, 2006

Temperature-dependent analysis of Ge-on-SOI photodetectors and receivers
SJ Koester, L Schares, CL Schow, G Dehlinger, RA John
3rd IEEE International Conference on Group IV Photonics, paper ThA4, Ottawa, Canada, Sept.13-15, pp. 179--181, 2006

Terabus: Terabit/second-class card-level optical interconnect technologies
L Schares, JA Kash, FE Doany, CL Schow, C Schuster, DM Kuchta, PK Pepeljugoski, JM Trewhella, CW Baks, RA John, L Shan, YH Kwark, RA Budd, P Chiniwalla, FR Libsch, J Rosner, CK Tsang, CS Patel, JD Schaub, R Dangel, F Horst, BJ Offrein, D Kucharski, et al.
IEEE Journal of Selected Topics in Quantum Electronics, special issue on Optoelectronic Packaging, Vol. 12, No. 5, pp. 1032-1045, Sept/Oct. 12(5), 1032-1044, IEEE, 2006

Group index and group velocity dispersion in silicon-on-insulator photonic wires
E. Dulkeith, F. Xia, L. Schares, W.M.J. Green, Y.A. Vlasov
Optics express 14(9), 3853--3863, Optical Society of America, 2006


2005

Characterization of equalized 10-Gb/s multimode fibre LAN links using transverse 7-tap analog FIR filter in 0.13-μm CMOS
A Risteski, S Reynolds, J Tierno, L Schares, S Gowda, JA Kash, P Pepeljugoski
31st European Conference on Optical Communications (ECOC), paper We4.P038, Glasgow, Scotland, 25-29 Sept., pp. 577--578, 2005

Terabus: A waveguide-based parallel optical interconnect for Tb/s-class on-board data transfers in computer systems
L Schares, C Schow, F Doany, C Schuster, J Kash, D Kuchta, P Pepeljugoski, J Schaub, J Trewhella, et al.
(invited), 31st European Conference on Optical Communications (ECOC), paper We1.5.5, Glasgow, Scotland, 25-29 Sept., pp. 369, 2005

Terabus: A Waveguide-Based Parallel Optical Interconnect
F Doany, J Kash, D Kuchta, P Pepeljugoski, L Schares, J Schaub, C Schow, J Trewhella, C Baks, Y Kwark, others
(invited), Proc. of "Frontiers in Optics- 89th OSA Annual Meeting", paper FTuI4, Tuscon, AZ, USA, 16-20 Oct., 2005

Terabus: a chip-to-chip parallel optical interconnect
JA Kash, F Doany, D Kuchta, P Pepeljugoski, L Schares, J Schaub, C Schow, J Trewhella, C Baks, Y Kwark, others
Proc. of "18th IEEE-LEOS Annual Meeting", pp. 263-364, Sydney, Australia, 23-27 Oct., pp. 363--364, 2005

All-optical signal processing and applications within the esprit project DO_ALL
T Houbavlis, KE Zoiros, M Kalyvas, G Theophilopoulos, C Bintjas, K Yiannopoulos, N Pleros, K Vlachos, H Avramopoulos, L Schares, others
Journal of Lightwave Technology,vol. 23, No. 2, pp.781-801, Feb. 23(2), 781, OSA, 2005


2004

Analysis of add/drop multiplexing from 160 Gbit/s to 10 Gbit/s and 40 Gbit/s with a modified SOA-MZI gate
AM Melo, S Randel, L Schares, K Petermann
Proc. of "17th IEEE-LEOS Annual Meeting", vol. 2, pp. 917-918, Rio Mar, Puerto Rico, 7-11 Nov., 2004

40-GHz mode-locked fiber-ring laser using a Mach-Zehnder interferometer with integrated SOAs
L Schares, R Paschotta, L Occhi, G Guekos
J. Lightwave Technol., vol. 22, No. 3, pp. 859-873, Mar. 22, 859--873, 2004

Mode-locked fiber ring lasers with semiconductor optical amplifiers for repetition rates between 10 and 160 Ghz
L Schares
PhD thesis No. 15359, Swiss Federal Institute of Technology (ETH), Zurich, Switzerland, Hartung-Gorre, 2004

Design of an all-optical NOT XOR gate based on cross-polarization modulation in a semiconductor optical amplifier
H Soto, E Alvarez, CA Diaz, J Topomondzo, D Erasme, L Schares, L Occhi, G Guekos, M Castro
Optics Communications, vol. 237, No. 1-3, pp. 121-131, Jul. 237(1-3), 121--131, Elsevier, 2004


2003

Spectrally resolved chirp measurement of 40-GHz pulses from mode-locked fiber ring laser
L Schares, R Scotto, L Occhi, G Guekos
CLEO Europe, paper CH1-5, Munich, Germany, June 23-27, pp. 419--419, 2003

Phase dynamics in gain-transparent semiconductor optical amplifiers
C Schubert, L Schares, C Schmidt, G Guekos, HG Weber
"European Conference on Optical Communication" (ECOC), paper Th3.5.2, Rimini, Italy, September 21-25, pp. 1062--1063, 2003

80-160-GHz mode-locked fiber ring laser synchronized to external optical pulse stream
L Schares, L Occhi, G Guekos
IEEE Photonics Technology Letters,vol. 15, No. 10, pp. 1348-1350 15(10), 1348--1350, 2003

Phase modeling based on the alpha-factor in bulk semiconductor optical amplifiers
L Occhi, L Schares, G Guekos
IEEE J. Select. Topics Quantum Electron., vol. 9, no.3 9(3), 788--797, 2003

Phase dynamics of semiconductor optical amplifiers at 10-40 GHz
L Schares, C Schubert, C Schmidt, HG Weber, L Occhi, G Guekos
IEEE J. Quantum Electron., vol. 39, No. 11, pp. 1394-1408, Nov. 39(11), 1394--1408, 2003


2002

Stability and jitter of 10 GHz fiber ring laser using a Mach-Zehnder interferometer with integrated SOAs
L. Schares, L. Occhi, G. Guekos and H. Melchior
Proc. of "Optical Amplifiers and their Applications" (OAA), paper OWC3, Vancouver, Canada, July 14-17, 2002

80-GHz fiber ring laser using monolithic Mach--Zehnder interferometer with integrated semiconductor optical amplifiers
L Schares, L Occhi, G Guekos, H Melchior
Best Student Paper Award, Opto-Electronics and Communications Conference (OECC), paper 11C1-3, Yokohama, Japan, July 8-12, 2002

Picosecond, wavelength tunable SOA-based laser sources at 10-40 GHz repetition rates
L Schares, L Occhi, G Guekos
"Conference of Lasers and Electro-Optics" (CLEO), paper CML-3, Vol.1, pp. 56-57, Long Beach, California, 20-24 May, pp. 56--57, 2002

Intraband gain dynamics in bulk semiconductor optical amplifiers: measurements and simulations
L Occhi, Y Ito, H Kawaguchi, L Schares, J Eckner, G Guekos
IEEE J. Quantum Electron., Vol. 38, No.1, pp. 54-60, Jan. 38(1), 54--60, 2002

All-optical AND gate implementation using cross-polarizationmodulation in a semiconductor optical amplifier
H Soto, CA Diaz, J Topomondzo, D Erasme, L Schares, G Guekos
IEEE Photon. Technol. Lett., Vol 14, No.4, pp. 498-500, Apr. 14(4), 498--500, 2002


2001

Experimental demonstration of a NOT XOR gate using cross-polarization modulation in a semiconductor optical amplifier
H Soto, JC Dominguez, CA Diaz, J Topomonzo, D Erasme, L Schares, G Guekos
Proc. of "Optoelectronics and Microelectronics-SPIE", vol. 4602, pp. 1-8, Tianjin, China, Nov. , pp. 1, 2001

Optimization of 40:10 Gb/s all-optical time division demultiplexer based on semiconductor optical amplifier and delayed-interference
R Gutierrez-Castrejon, M Duelk, S Fischer, L Schares, G Guekos
Optical Amplifiers and Applications (OAA), paper OTuE12, Stresa, Italy, 1-4 July , 2001

Effective alpha factor in bulk semiconductor optical amplifiers of different lengths
L Occhi, R Scollo, L Schares, G Guekos
Proc. of "14th IEEE-LEOS Annual Meeting", paper MM5, San Diego, CA, USA, 12-15 Nov., 2001

Recovery dynamics of cross-modulated beam phase in semiconductor amplifiers and applications to all-optical signal processing
R Gutierrez-Castrejon, L Occhi, L Schares, G Guekos
Optics Communications, Vol. 195, pp. 167-177, 1 August 195(1-4), 167--177, Elsevier, 2001

Optimization of SOA-based Sagnac-interferometer switches for demultiplexing to 10 and 40 Gb/s
S Diez, E Hilliger, M Kroh, C Schmidt, C Schubert, HG Weber, L Occhi, L Schares, G Guekos, LK Oxenloewe
Optics communications 189(4-6), 241--249, Elsevier, 2001

40-GHz all-optical XOR with UNI gate
G. Theophilopoulos, K. Yiannopoulos, M. Kalyvas, C. Bintjas, G. Kalogerakis, H. Avramopoulos, L. Occhi, L. Schares, G. Guekos, S. Hansmann and R. Dall'Ara
Optical Fiber Communications (OFC) Conference, Paper MB2-1, Anaheim CA, March 17-22, , 2001


2000

20-Gb/s Data Packet Write/Store Memory
M. Kalyvas, C. Bintjas, K. Zoiros, T. Houbavlis, H. Avramopoulos, L. Occhi, L. Schares, G. Guekos, S. Hansmann and R. Dall'Ara
Proc. of "European Conference on Optical Communications" (ECOC), Vol. 4, pp. 65-66, Munich, Germany, September 3-7, 2000

20-Gbps Boolean XOR with UNI Gate
C. Bintjas, M.Kalyvas, G. Theophilopoulos, T. Stathopoulos, H. Avramopoulos, L. Occhi, L. Schares, G. Guekos, S. Hansmann and R. Dall'Ara
Proc. of "European Conference on Optical Communications" (ECOC), Vol. 4, pp. 61-62, Munich, Germany, September 3-7, 2000

Comparison of the Chirp induced in Wavelength Converters based on Semiconductor Optical Amplifiers
L. Occhi, L. Schares, R. Gutierrez-Castrejon, S. Fischer and G. Guekos
Proc. of "Opto-Electronics and Communications Conference" (OECC), pp. 418-419, Chiba, Japan, July , 2000

Gain recovery dynamics modeling and measurement in saturated semiconductor optical amplifiers
R Gutierrez-Castrejon, L Schares, L Occhi, G Guekos, T Kawazoe, H Kawaguchi
Proceedings of V Optoelectronics and Communication Conference (OECC 2000), pp.416-417, Chiba, Japan, July , pp. 416--417

20-Gb/s all-optical XOR with UNI gate
C Bintjas, M Kalyvas, G Theophilopoulos, T Stathopoulos, H Avramopoulos, L Occhi, L Schares, G Guekos, S Hansmann, R Dall'ara
IEEE Photon. Technol. Lett., Vol. 12, No. 7, pp. 834-836, July 12(7), 824--836, 2000

Modeling and measurement of longitudinal gain dynamics in saturated semiconductor optical amplifiers of different length
R Gutierrez-Castrejon, L Schares, L Occhi, G Guekos
IEEE J. Quantum Electron., Vol. 36, No. 12, pp.1476-1484, Dec. 36(12), 1476--1484, 2000


1999

Multi-wavelength mixing in a semiconductor optical amplifier and its consequence in a preamplified wavelength division multiplexingsystem
L Schares, Z Y Chen, G Debarge, Y Jaouen, G H Duan, D Sigogne, H Nakajima, A Carenco
Proc. of "Conference of Lasers and Electro-Optics" (CLEO), Baltimore, paper CWD5, pp. 241-242, May 23-28, pp. 241--242, 1999