Research Interests
.......Preble's group, R.I.T NanophotonicsGroup, is developing ultrasmall devices that leverage the high bandwidths, low powers, low latencies and sensitivities that are possible with light. The devices and systems we are developing will revolutionize future microprocessor, communication, and sensing systems. These nanophotonic devices are primarily integrated on a silicon CMOS platform in order to leverage the mature fabrication techniques that are used in the microelectronics industry. This integration will enable unprecedented electro-optical information systems that one day will be able to process hundreds of terabits of information on a low cost chip.
Selected Publications
•Stefan F. Preble, Liang Cao, Ali W. Elshaari, Abdelsalam. A. Aboketaf, and Donald Adams, "Single photon adiabatic wavelength conversion,"Applied Physics Letters 101, 171110 (2012). [PDF]
• Edwin E. Hach III, Ali W. Elshaari, and Stefan F. Preble, "Fully quantum-mechanical dynamic analysis of single-photon transport in a single-mode waveguide coupled to a traveling-wave resonator," Physical Review A 82, 063839 (2010). [PDF]
• Abdelsalam A. Aboketaf, Ali W. Elshaari, and Stefan F. Preble, “Optical time division multiplexer on silicon chip,” Optics Express 18, 13, 13529-13535 (2010). [PDF]
• Karthik Narayanan and Stefan F. Preble, "Optical nonlinearities in hydrogenated-amorphous silicon waveguides," Opt. Express 18, 9, 8998-9005 (2010). [PDF]
• Karthik Narayanan, Ali W. Elshaari, and Stefan F. Preble, "Broadband all-optical modulation in hydrogenated-amorphous silicon waveguides," Opt. Express 18, 10, 9809-9814 (2010). [PDF]
• Ali W. Elshaari and Stefan F. Preble, "10 Gb/s broadband silicon electro-optic absorption modulator," Opt. Communications 283, 14, 2829-2834 (2010). [PDF]
• Karthik Narayanan and Stefan F. Preble, "Generation of amplitude-shift-keying optical signals using silicon microring resonators," Opt. Express 18, 5015-5020 (2010). [PDF]
• Ali. W. Elshaari, Abdelsalam A. Aboketaf, and S. F. Preble, “Controlled Storage of Light in Silicon Cavities,” Optics Express,18, 3014-3022 (2010). [PDF]
• S. Preble, Q. Xu, and M. Lipson, “Changing the Colour of Light in a Silicon Resonator,” Nature Photonics 1, (2007). [PDF]
• P. Dong, S. Preble, J. Robinson, S. Manipatruni, and M. Lipson, “Inducing Photonic Transitions between Discrete Modes in a Silicon Optical Microcavity,” Phys. Rev. Lett 100, 033904 (2008). [PDF]
• P. Dong, S. Preble, and M. Lipson, “All-Optical Compact Silicon Comb Switch,” Opt. Express 15, (2007). [PDF]
• J. Robinson, S. Preble, and M. Lipson, “Imaging highly confined modes in sub-micron scale silicon waveguides using Transmission-based Near-field Scanning Optical Microscopy,” Opt. Express 14, (2006). [PDF]
• A. Gondarenko, S. Preble, J. Robinson, L. Chen, H. Lipson, and M. Lipson, “Spontaneous Emergence of Periodic Patterns in a Biologically Inspired Simulation of Photonic Structures,” Phys. Rev. Lett. 96, (2006). [PDF]
• S. Preble, Q. Xu, B. Schmidt, and M. Lipson, “Ultrafast all-optical modulation on a silicon chip,” Opt. Lett. 30, (2005). [PDF]
• S. Preble, H. Lipson, and M. Lipson, “Two-dimensional photonic crystals designed by evolutionary algorithms,” Appl. Phys. Lett. 86, (2005). [PDF]
• B. Schmidt, V. Almeida, C. Manolatou, S. Preble, and M. Lipson, “Nano-cavity in a Silicon waveguide for ultra sensitive detection,” Appl. Phys. Lett. 85, (2004). [PDF]