Research Philosophy
The IPES lab’s primary research goal is to develop
transformative technologies, devices and chips in the field of
integrated photonics. A
bottom-up project development approach is emphasized. That is, we
design our proposed devices and systems, fabricate them in CREOL’s cleanroom facility, and characterize them in our measurement lab.
If during this exciting and challenging route, new theory or modeling is needed, we work on the more fundamental
theoretical aspects of the targeted goals.
Recent Research Highlights
·
Lithium Niobate
on Silicon Photonics
The objective is to develop a novel lithium-niobate-on-silicon
platform for compact (submicron waveguide), low-power Mach-Zehnder
modulators and ultracompact microring resonators and modulators, as
well as for second-order integrated nonlinear optics and quantum
optics applications.
(Funded by the ONR Young Investigator and the DARPA DOSOS
Programs, as well as DOE, NASA and NSF SBIR Programs)
·
Unconventional Integrated Photonic Platforms
·
The objective
is to develop novel optical waveguide platforms with exceptional or
unprecedented properties and performance.
Demonstrated examples are T-Guides with extremely
broad single-polarization behavior and topographically-anisotropic
photonics with extremely broadband polarization selectivity.
(Funded by the NSF CAREER Program)
·
Chalcogenide Glass on Silicon Photonics
·
The objective
is to develop novel highly nonlinear chalcogenide-glass-on-silicon
waveguides and microring resonators for extremely broad
supercontinuum generation and other nonlinear applications.
(Funded by the DARPA DOSOS Program)
Mid-Infrared Silicon Photonics
The objective is to expand the realm of silicon photonics beyond the
well-established near-infrared wavelengths and into the mid-infrared
(3
̶
5 µm). Novel passive and
active (nonlinear) monolithically integratable photonic devices and
circuits targeting the needs of mid-infrared optics are being
demonstrated.
(Funded by the NSF CAREER Program)
·
Integrated Optical Delay Lines and
Radio-Frequency (RF) Photonics on Silicon
The objective of this program is the demonstration of
electronically-tuned analog optical delay lines, low-loss digital
delay lines, optical amplifiers enhanced for high gain and
monolithic integration, and switches designed for high interchannel
isolation on silicon.
(Funded by NSF)
·
Hybrid Integration of GaAs and
Silicon Photonic Chips with Subwavelength Plasmonic Apertures on
Silicon
The objective of the program is to pave the path for seamless
integration of III-V and silicon devices on the same chip without
bonding, but rather epitaxial growth on silicon substrates.
Also, subwavelength plasmonic apertures on
silicon are envisioned to be used for coupling in and out of silicon
waveguides.
(Funded by NSF and NASA)
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