John Michael Dallesasse

Electrical and Computer Engineering
Associate Professor
2114 Micro and Nanotechnology Lab
208 N. Wright Street
Urbana Illinois 61801
(217) 333-8416

Primary Research Area

  • Microelectronics and Photonics
John Michael Dallesasse
John Michael Dallesasse



  • Doctor of Philosophy, Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1991
  • Master of Science, Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1987
  • Bachelor of Science, Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1985


Prof. Dallesasse has over 20 years of experience in the Optoelectronics Industry, and has held a wide range of positions in technology development and management, including Vice President of MicroLink Devices and Senior Director of Engineering and Technology for Emcore’s Fiber Optics Division. Most recently, he was the Chief Technology Officer, Vice President, and co-founder of Skorpios Technologies, Inc., a venture-capital funded startup that is developing and commercializing silicon photonic ICs based upon a wafer-scale process for selective integration of III-V materials on SOI substrates. His technical contributions include, with Nick Holonyak, Jr., the discovery of III V Oxidation, which has become an important process technology in the fabrication of high-speed VCSELs. Prof. Dallesasse has also been an active participant in the IEEE 802.3 standards effort, and was an important contributor in the definition of the 10GBASE-LX4 port type for use with installed “legacy” multimode fiber.

Other Professional Employment

  • Chief Technology Officer, Vice President, and Co-Founder, Skorpios Technologies, Inc., Albuquerque, NM, August 2010 - December 2011
  • Vice President, MicroLink Devices, Inc., Niles, IL, March 2009 - August 2010
  • Senior Director of Development and Engineering, Emcore Corporation, Naperville, IL, October 2003 - March 2009
  • Manager of Group Engineering, Molex, Inc., Downers Grove, IL, 1999 - October 2003

Major Consulting Activities

  • Technical Advisory Board, Vega Wave Systems, West Chicago, IL, August 2012 - Present
  • Chief Technology Advisor, Skorpios Technologies, Inc., Albuquerque, NM, January 2012 - Present
  • Chair, Technical Advisory Board, Skorpios Technologies, Inc., Albuquerque, NM, April 2011 - July 2012

Teaching Statement

A key attraction of making the transition from a successful career in industry to an academic position is the ability to pass on years of accumulated experience to a new generation. Through the course of my career I have had the ability to mentor many young engineers, helping them grow both personally and professionally. This has been one of my greatest sources of satisfaction, and a key motivation for my career growth into engineering management. There is tremendous satisfaction in seeing a spark of insight turn into a flame of knowledge. Making a positive impact on the lives of others through helping them learn and then seeing the contributions that they, in turn, are able to make provides a fulfillment that cannot be measured.

Research Statement

Photonic integration is a necessity for next-generation optical networks. As the number of applications that demand significant bandwidth increase, the ability of existing networks to serve those needs is compromised. Solutions that enable the existing fiber infrastructure to carry more data, such as advanced optical modulation formats based upon phase-shift-keying and polarization multiplexing, require complex optical transmitters and coherent optical receivers assembled using discrete components. These solutions are too expensive for broad deployment, and face fundamental challenges in reducing system cost. The most promising approach to overcoming these challenges is photonic integration. Both Silicon Photonics and Monolithic Integration on InP face fundamental challenges. Silicon is an outstanding material for complex electronics and waveguides, but its indirect bandgap and weak nonlinear optical properties create challenges with regard to the generation, efficient detection, and active control of light. Compound semiconductor materials, especially those that are lattice matched to InP or GaAs, are outstanding materials for these functions but are costly and not ideal for the fabrication of complex electronics, especially ICs such as network processors. Past attempts to bring these materials together have not progressed past the R&D stage due to limitations in performance, reliability, or manufacturability. Direct epitaxial growth of GaAs or InP on silicon faces the problem of having a high defect-density metamorphic layer that can impact device reliability. Wafer bonding techniques, which have been successfully employed in the LED area as well as in the fabrication of SOI wafers, show promise but also face challenges. Direct bonding at high temperature creates significant stress, as the thermal expansion coefficients of Si and III-Vs are not well matched. This stress has an unacceptable impact on device reliability. Lower-temperature bonding techniques using plasma activation, chemical treatment, or atomically thin interface layers show promise but require further development. An integration approach that recognizes and addresses material compatibility issues and manufacturability should be able to overcome prior barriers to commercialization and enable broad deployment of photonic integrated circuits. What to integrate is also a key area of interest. Recent progress on the Feng-Holonyak Transistor Laser suggests that it may be able to serve as a fundamental device element in photonic-electronic integrated circuits, but further research on device integration is required.

Undergraduate Research Opportunities

The Advanced Semiconductor Device and Integration Group welcomes the participation of undergraduates in the research process through independent study projects, undergraduate thesis projects, and through information working relationships. A limited number of slots are available, but interested individuals are encouraged to contact Professor Dallesasse or one of his graduate students.

Research Interests

  • Transistor Lasers and Light Emitting Transistors
  • Compound Semiconductor Materials
  • Compound Semiconductor Devices
  • Photonic Integration & Silicon Photonics

Research Areas

  • Lasers and optical physics
  • Microcavity lasers and nanophotonics
  • Microcavity lasers and nanophotonics
  • Microelectronics and Photonics
  • Microwave devices and circuits
  • Microwave integrated circuits
  • Millimeter wave integrated circuits
  • Nano-materials
  • Nano-photonics
  • Nanotechnology
  • Optical communications
  • Photonic crystals
  • Photonic integrated circuits (PICs)
  • Quantum nanostructures for electronics and photonics
  • Semiconductor electronic devices
  • Semiconductor lasers and photonic devices
  • Semiconductor materials
  • Sensors

Selected Articles in Journals

  • "Effect of the energy barrier in the base of the transistor laser on the recombination lifetime," R. Bambery, C. Wang, J.M. Dallesasse, M. Feng, and N. Holonyak, Jr., Appl. Phys. Lett. 104, 081117-081117-4 (2014).
  • "Integrated tunable CMOS laser," T. Creazzo, E. Marchena, S.B. Krasulick, P.K.L. Yu, D. Van Orden, J.Y. Spann, C.C. Blivin, L. He, H. Cai, J.M. Dallesasse, R.J. Stone, and A. Mizrahi, Optics Express 21, 28048-28053 (2013).
  • "III-V Oxidation: Discoveries and Applications in Vertical-Cavity Surface-Emitting Lasers," J.M. Dallesasse and D.G. Deppe, Proc. IEEE 101, 2234-2242 (2013).
  • "Voltage and Current Modulated 20Gbit/s Operation of a Transistor Laser at Room Temperature," R. Bambery, F. Tan, M. Feng, J. M. Dallesasse, and N. Holonyak, Jr., IEEE Photon. Tech. Lett. 25, 859-862 (2013).
  • "Oxidation of Al-bearing III-V materials: A review of key progress," J.M. Dallesasse and N. Holonyak, Jr., Applied Physics Reviews, J. Appl. Phys. 113, 051101-051101-11 (2013).
  • “Native-Oxide Masked Impurity-Induced Layer Disordering of AlxGa1-xAs Quantum Well Heterostructures,” J. M. Dallesasse, N. Holonyak, Jr., N. El-Zein, T. A. Richard, F. A. Kish, A. R. Sugg, R. D. Burnham, and S. C. Smith, Appl. Phys. Lett. 58, 974-976 (4 March 1991).
  • “Native-Oxide Defined Coupled-Stripe AlxGa1-xAs-GaAs Quantum-Well Heterostructure Lasers,” J. M. Dallesasse, N. Holonyak, Jr., D. C. Hall, N. El-Zein, A. R. Sugg, S. C. Smith, and R. D. Burnham, Appl. Phys. Lett. 58, 834-836 (25 February 1991).
  • “Native-Oxide Stripe-Geometry AlxGa1-xAs-GaAs Quantum Well Heterostructure Lasers,” J. M. Dallesasse and N. Holonyak, Jr., Appl. Phys. Lett. 58, 394-396 (1991).
  • “Hydrolyzation Oxidation of AlxGa1-xAs-AlAs-GaAs Quantum Well Heterostructures and Superlattices,” J. M. Dallesasse, N. Holonyak, Jr., A. R. Sugg, T. A. Richard, and N. El-Zein, Appl. Phys. Lett. 57, 2844-2846 (1990).
  • “Hydrogenation-Defined Stripe-Geometry In0.5(AlxGa1-x)0.5P Quantum Well Lasers,” J. M. Dallesasse, N. El-Zein, N. Holonyak, Jr., R. M. Fletcher, C. P. Kuo, T. D. Osentowski, and M. G. Craford, J. Appl. Phys. 68, 5871-5873 (1990).
  • “Environmental Degradation of AlxGa1-xAs-GaAs Quantum-Well Heterostructures,” J. M. Dallesasse, N. El-Zein, N. Holonyak, Jr., K. C. Hsieh, R. D. Burnham, and R. D. Dupuis, J. Appl. Phys. 68, 2235-2238 (1990).
  • “Stability of AlAs in AlxGa1-xAs-AlAs-GaAs Quantum Well Heterostructures,” J. M. Dallesasse, P. Gavrilovic, N. Holonyak, Jr., R. W. Kaliski, D. W. Nam, E. J. Vesely, and R. D. Burnham, Appl. Phys. Lett. 56, 2436-2438 (1990).
  • “Impurity-Induced Layer Disordering in In0.5(AlxGa1-x)0.5P-InGaP Quantum Well Heterostructures: Visible Spectrum Buried Heterostructure Lasers,” J. M. Dallesasse, W. E. Plano, D. W. Nam, K. C. Hsieh, J. E. Baker, N. Holonyak, Jr., C. P. Kuo, R. M. Fletcher, T. D. Osentowski, and M. G. Craford, J. Appl. Phys. 66, 482-487 (1989).
  • “Short-Wavelength (~6400 Å) Room-Temperature Continuous Operation of p-n In0.5(AlxGa1 x)0.5P Quantum Well Lasers,” J. M. Dallesasse, D. W. Nam, D. G. Deppe, N. Holonyak, Jr., R. M. Fletcher, C. P. Kuo, T. D. Osentowski, and M. G. Craford, Appl. Phys Lett. 53, 1826-1828 (1988).

Articles in Conference Proceedings

  • "10GBASE-LX4: Technical Feasibility," J. Dallesasse, E. Grann, B. Twu, IEEE 802.3ae Standards Committee Meeting, Nov. 2001.
  • “Short-Wavelength (~6350 Å) Continuous 20°C Operation of (AlxGa1-x)0.5In0.5P Quantum Well Lasers,” Device Research Conference, Boulder, June 20-22, 1988.

Invited Lectures

  • “III-V Oxidation and Optical Networking: The Discovery of III-V Oxidation, It’s Application, and Future Process Technologies for Photonic Integration,” J. Dallesasse, University of Notre Dame Graduate Seminar, March 25, 2011.
  • “Oxidation Then and Now: The Discovery of III-V Oxidation and Its Commercial Use Today,” J. Dallesasse, The Holonyak Symposium, October 2008.
  • “100 Gigabit Ethernet: Limitations for Practical Deployments,” J. Dallesasse, OIDA Panel Discussion, OFC 2007.
  • “Technologies for 100 Gigabit Ethernet: Components and Modules for the Physical Layer,” OIDA 16th Annual Forum, August 2006.
  • “10GBASE-LX4 Transceivers: Enabling 10 Gigabit Ethernet Deployment Over Existing Multimode Fiber Networks,” J. Dallesasse, R. Ball, B. Lane, P. Wachtel, T. Whitehead, S. Skiest, B. Noble, D. Richardson, J. Scheibenreif, and T. Moretti, Invited Talk, Communications Design Conference, October 2003.
  • “Oxidation of Al-Bearing III-V Materials for Optoelectronic Device Fabrication,” J. M. Dallesasse, Invited Talk, Eighth International Conference on Superlattices, Microstructures and Microdevices, Cincinnati, August, 1995.


  • 8,368,995 Method and system for hybrid integration of an opto-electronic integrated circuit
  • 7,959,363 Optical transceiver with optical multiplexer on a flexible substrate
  • 7,941,053 Optical transceiver for 40 gigabit/second transmission
  • 5,262,360 AlGaAs native oxide
  • 5,373,522 Semiconductor devices with native aluminum oxide regions
  • 5,567,980 Native oxide of an aluminum-bearing group III-V semiconductor
  • 5,696,023 Method for making aluminum gallium arsenide semiconductor device with native oxide layer
  • 6,974,260 Flexible substrate for routing fibers in an optical transceiver
  • 7,242,824 Flexible substrate for routing fibers in an optical transceiver
  • 7,325,983 10GBASE-LX4 optical transceiver in XFP package
  • 7,359,641 Modular optical transceiver
  • 7,359,642 Modular optical receiver
  • 7,380,993 Optical transceiver for 100 gigabit/second transmission
  • 7,463,830 Modular optical transmitter for WWDM transceivers
  • 7,465,105 Flexible substrate for routing fibers in an optical transceiver
  • 7,578,624 Flexible substrate for routing fibers in an optical transceiver
  • 7,583,900 Modular optical transceiver

Professional Societies

  • APS Member
  • OSA Member (Fellow)
  • IEEE Senior Member

Research Honors

OSA Fellow (2013)

Courses Taught