UCSB Engineering

Daniel Blumenthal


Electrical & Computer Engineering

Daniel Blumenthal


Department of Electrical and Computer Engineering
University of California
Santa Barbara, CA 93106-9560

tel: (805) 893-4168
fax: (805) 893-7990

Personal web site

Research Description

Electronics and Photonics: fiber-optic networks, wavelength and subcarrier division multiplexing, photonic packet switching, integrated semiconductor photonic circuits, nanophotonics, signal processing in semiconductor optical devices, wavelength conversion, microwave photonics.

Research Groups


Daniel J. Blumenthal (S’91–M’93–SM’97–F’03) received the B.S.E.E. degree from the University of Rochester, Rochester, NY, in 1981, the M.S.E.E. degree from Columbia University, New York, in 1988, and the Ph.D. degree from the University of Colorado, Boulder, in 1993. In 1981 he worked at StorageTek, Louisville, CO, and from 1993 to 1997 he was Assistant Professor in the School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta. He is currently a Professor in the Department of Electrical and Computer Engineering at the University of California, Santa Barbara. Dr. Blumenthal is Director of the recently formed Terabit Optical Ethernet Cetner (TOEC) and the LASOR project at UCSB, a project funded by the DARPA/MTO Data in the Optical Domain Network (DOD-N) program. He currently serves on the Board of Directors for National LambdaRail (NLR) and serves on the Internet2 Architecture Advisory Council. He is a co-founder of Calient Networks (established 1999) and more recently Packet Photonics, LLC. His research interests are in optical communications, photonic packet switching and all-optical networks, all-optical wavelength conversion and regeneration, ultra-fast communications, InP Photonic Integrated Circuits (PICS) and nanophotonic device technologies. He has authored or co-authored over 350 papers in these and related areas, holds 7 patents and is co-author of Tunable Laser Diodes and Related Optical Sources (New York: IEEE–Wiley, 2005). Dr. Blumenthal is a Fellow of the IEEE (LEOS and Communications Societies) and Fellow of the Optical Society of America (OSA). He is recipient of a 1999 Presidential Early Career Award for Scientists and Engineers (PECASE) from the White House, a 1994 National Science Foundation Young Investigator (NYI) Award, and a 1997 Office of Naval Research Young Investigator Program (YIP) Award. He has served as an Associate Editor for the IEEE PHOTONICS TECHNOLOGY LETTERS and as Associate Editor for the IEEE TRANSACTIONS ON COMMUNICATIONS. Dr. Blumenthal was Guest Editor for the JSTQE Special Issue on Ultri-Fast Integrated Photonics and has served as a Guest Editor for the IEEE JOURNAL OF LIGHTWAVE TECHNOLOGY special issue on Photonic Packet Switching Systems (December 1998) and the IEEE JOURNAL OF SELECTED AREAS IN COMMUNICATIONS special issue on High-Performance Optical/Electronic Switches/Routers for High-Speed Internet. Dr. Blumenthal has served as the General Program Chair for the 2001 OSA Topical Meeting on Photonics in Switching and as Program Chair for the 1999 Meeting on Photonics in Switching. He has also served on numerous other technical program committees including the Conference on Optical Fiber Communications OFC (1997 - 2000), the Conference on Lasers and Electrooptics CLEO (1999-2000), the European Conference on Optical Communications ECOC (2004-2005) and SIGCOMM 2006.


  • Presidential Early Carreer Award for Scientists and Engineers (PECASE), 1999
  • Office of Naval Research Young Investigator Program (YIP) Award, 1997
  • NSF Young Investigator (NYI) Award, 1994

Selected Publications

See complete list of publications
  • "Raman-Enhanced Regenerative Ultrafast All-Optical Fiber XPM Wavelength Converter, IEEE Journal of Lightwave Technology, 23(3), 2005, . 1105-15, W. Wang, H. N. P., L. Rau, H.-F. Chou, J.E. Bowers, and D.J. Blumenthal, web link
  • 160 Gb/s Variable Length Packet/10 Gb/s-Label All-Optical Label Switching With Wavelength Conversion and Unicast/Multicast Operation, , IEEE Journal of Lightwave Technology, 23(1), 2005, . 211-8, W. Wang, L. G. R., and D.J. Blumenthal, web link
  • 40-GHz Dual-Mode-Locked Widely Tunable Sampled-Grating DBR Laser, IEEE Photonics Technology Letters, 17(2), 2005, 285-7, L. A. Johansson, Z. H., D. J. Blumenthal, L. A. Coldren, Y. A. Akulova, and G. A. Fish, web link
  • Accurate Measurement of High Extinction Ratios of Ultrafast Pulsed Sources, IEEE Photonics Technology Letters, 17(9), 2005, 1917-9, S. Camatel, W. W., L. Rau and D. J. Blumenthal, web link
  • Compact Optical 3R Regeneration Using a Traveling-Wave Electroabsorption Modulator, IEEE Photonics Technology Letters, 17(2), 2005, 486-8, ," H.-F. Chou, Z. Hu, J. E. Bowers, and D. J. Blumenthal, web link
  • Cross-Phase Modulation Efficiency in Offset Quantum Well and Centered Quantum Well Semiconductor Optical Amplifiers, IEEE Photonics Technology Letters, 17(11), 2005, 2364-2366, M. L. Ma?anović, V. L., E. J. Skogen, J. S. Barton, J. A. Summers, J. W. Raring, L. A. Coldren, and D. J. Blumenthal, web link
  • Quantum-Well-Intermixed Monolithically Integrated Widely Tunable All-Optical Wavelength Converter Operating at 10 Gb/s, IEEE Photonics Technology Letters, 17(8), 2005, 1689-91, V. Lal, M. L. M., E.J. Skogen, J.W. Raring, J.A. Summers, L.A. Coldren and D.J. Blumenthal, web link
  • Transmission measurement of tapered single-line defect photonic crystal waveguides, IEEE, 17(10), 2005, 2092 - 2094, A. Xing, M. D., D.J. Blumenthal, E. L. Hu, Photonics Technology Letters, web link
  • Widely Tunable Monolithically Integrated All-Optical Wavelength Converters in InP, IEEE Journal of Lightwave Technology, 23(3), 2005, 1350-62, M.L. Ma?anović, V. L., J.A. Summers, J.S. Barton, E.J. Skogen, L.G. Rau, L.A. Coldren, and D.J. Blumenthal, web link
  • Detailed characterization of slow and dispersive propagation near a mini-stop-band of an InP photonic crystal waveguide, Optics Express, 13(13), 4931-8, M. Davan'e7o, A. X., J. Raring, E.L. Hu, D.J. Blumenthal, web link