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Wavelength Division MUX/DEMUX Using On-Chip Sagnac Loop Based Fabry Perot Cavities
This invention relates to integrated photonic devices for wavelength division multiplexing (WDM). The architecture implements an array of Fabry-Perot cavities formed using Sagnac loop reflectors as mirrors. Each cavity is side-coupled to a waveguide that carries a broadband optical signal, which ultimately enables multi-channel WDM operation.
Background:...
Published: 2/9/2026
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Inventor(s): Mohamed ElKabbash
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Semiconductors, Technology Classifications > Imaging & Optics > Lens & System Design, Technology Classifications > Imaging & Optics > Materials & Fabrication, Technology Classifications > Engineering & Physical Sciences > Photonics
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Athermal On-Chip Cavities and Filters Using Sagnac Loop Reflectors
This invention replaces traditional Fabry-Perot mirrors with Sagnac loop reflectors where the reflections from the loop have a phase response that depends on both the waveguide index and loop radius. These are both temperature-dependent properties, meaning that by choosing the right loop size and waveguide geometry, the phase drift from the mirrors...
Published: 2/9/2026
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Inventor(s): Mohamed ElKabbash
Keywords(s):
Category(s): Technology Classifications > Imaging & Optics > Materials & Fabrication, Technology Classifications > Imaging & Optics > Lens & System Design, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Semiconductors
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Deterministic Fabrication of Site-Controlled Semiconductor Quantum Dots
This technology is a novel technique for the manufacturing of site-controlled GaAs (gallium arsenide) quantum dots (QDs) used in quantum communication and quantum computing. This technique uses an improved local droplet etching (LDE) method. This method allows for control over the location of quantum dot formation. A key innovation of this method is...
Published: 2/5/2026
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Inventor(s): John Schaibley, Sadhvikas Addamane
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Optical, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > MEMS & Nanotechnology, Technology Classifications > Engineering & Physical Sciences > Quantum, Technology Classifications > Engineering & Physical Sciences > Semiconductors, Technology Classifications > Materials > Nanomaterials
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Radiation-Hardened Nanophotonic Thermal Emitters with Spectral and Angular Selectivity for Spaceborne Radiative Cooling
This technology introduces a radiation-hardened nanophotonic surface engineered for high-efficiency radiative cooling in low Earth orbit (LEO). The metasurface employs angular and spectral selectivity to maximize emission toward deep space while minimizing absorption of sunlight and planetary infrared radiation. Constructed from refractory and ceramic...
Published: 12/8/2025
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Inventor(s): Mohamed ElKabbash
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Aerospace Engineering, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Semiconductors, Technology Classifications > Engineering & Physical Sciences > Quantum, Technology Classifications > Imaging & Optics > Data Storage, Technology Classifications > Engineering & Physical Sciences > MEMS & Nanotechnology
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Passive Radiative Cooling System for Enabling Superconducting Electronics and Interconnects in Space-Based Computing and Communication Systems
This invention presents a passive thermal management system designed to sustain superconducting electronics and interconnects in orbit without the need for active refrigeration. The system employs a large, space-facing radiative shield to cool a circulating working fluid to cryogenic temperatures. The cooled fluid maintains superconducting components...
Published: 12/8/2025
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Inventor(s): Mohamed ElKabbash
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Semiconductors, Technology Classifications > Engineering & Physical Sciences > Quantum, Technology Classifications > Imaging & Optics > Data Storage, Technology Classifications > Engineering & Physical Sciences > Aerospace Engineering
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Bottom-Up Low-Temperature Synthesis of Graphene Interconnects for GAAFETs
This invention introduces a method for creating ultra-thin, highly conductive carbon-based wiring, called graphene interconnects, on metal surfaces at low temperatures. These interconnects are intended to replace traditional copper wiring used in advanced semiconductor devices, particularly those based on Gate-All-Around Field-Effect Transistors (GAAFETs)....
Published: 9/15/2025
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Inventor(s): Zafer Mutlu
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Semiconductors, Technology Classifications > Engineering & Physical Sciences > MEMS & Nanotechnology
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Integrated Diffractive-CMOS Optical Processor with In-situ Alignment and Reconfigurability
This invention is an integrated optical processor with diffractive elements through a CMOS chip. This technology addresses challenges associated with deploying free-space optical processors, such as diffractive networks, at optical wavelengths by integrating diffractive elements into the back end of the line of a CMOS chip. Leveraging the advanced fabrication...
Published: 12/23/2025
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Inventor(s): Mohamed ElKabbash
Keywords(s):
Category(s): Technology Classifications > Imaging & Optics > Materials & Fabrication, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Semiconductors
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Fifth Harmonic and Five-Photon Excitation Fluorescence Multiphoton Microscopy
This technology introduces a fifth-order multiphoton microscopy system. This advanced method enables high-resolution, label-free imaging of biological samples using nonlinear optical effects. Laser scanning multiphoton microscopy has gained prevalence across a wide range of applications due to its high-resolution imaging potential. This system uses...
Published: 6/23/2025
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Inventor(s): Khanh Kieu
Keywords(s):
Category(s): Technology Classifications > Imaging & Optics > Sensors and Detection > Inspection, Technology Classifications > Imaging & Optics > Microscopy, Spectroscopy, Polarimetry, Technology Classifications > Engineering & Physical Sciences > Semiconductors, Technology Classifications > Research Tools
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Schlieren Imaging System using Thin Film Stack Optical Coatings or Metasurface Filters
This technology involves the use of thin film stacks or metasurfaces as spatial filters in Schlieren imaging systems for optical diagnostics. By design, these materials possess inherent spatial filtering properties, eliminating the need for the precise mechanical alignment required by knife-edge setups and simplifying the system’s assembly and...
Published: 7/30/2025
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Inventor(s): Mohamed ElKabbash
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Semiconductors, Technology Classifications > Imaging & Optics > Materials & Fabrication
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Multilayer Stacking for High Aspect Ratio Feature Formation
This invention introduces a novel fabrication method that enables the formation of high aspect ratio features in non-silicon materials. Unlike conventional deep reactive ion etching (RIE), which struggles with certain materials, this technique sequentially builds structures through multiple cycles of resist patterning, deposition, and alignment. By...
Published: 12/23/2025
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Inventor(s): Mohamed ElKabbash
Keywords(s):
Category(s): Technology Classifications > Imaging & Optics > Materials & Fabrication, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Semiconductors
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