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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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Metasurface-Based Bell State Analyzer
This technology is an ultra-compact, single, flat, nanostructured surface that acts as a complete quantum state analyzer with the capability of separating photons based on their polarizations and then directing them to a set of outputs. This invention acts as a built-in quantum interferometer for photon pairs and can uniquely identify all four possible...
Published: 2/9/2026
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Inventor(s): Mohamed ElKabbash
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Quantum, Technology Classifications > Imaging & Optics > Optical Fab / Metrology
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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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Frequency-Selective Topological Wave Switches Using Anti-Resonance Control
This technology is a materials-based method of controlling acoustic wave propagation using anti-resonance control. By integrating phase-change inclusions into acoustic metamaterials, this technology provides a material that allows bidirectional signal transport at certain frequencies and only unidirectional transport at other specific anti-resonance...
Published: 2/2/2026
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Inventor(s): Samarjith Biswas, Pierre Deymier, Keith Runge, Pierre Lucas
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Photonics
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Zernike Mode Sorting with Vortex Phase Filtering
This invention uses vortex filters, used in conjunction with single-mode converters, to spatially sort real and complex-valued Zernike polynomials and function as an arbitrary spatial mode sorter.
Background:
Optical systems rely on the precise manipulation of complex light fields. Conventional wavefront sensing and mode decomposition techniques...
Published: 2/2/2026
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Inventor(s): Jacob Trzaska, Amit Ashok
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Quantum, Technology Classifications > Imaging & Optics > Telecommunications
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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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Entanglement Distribution Over Atmospheric Turbulence Channels Enabled by Adaptive Optics
This innovation is a system and method for using free-space optical (FSO) links to distribute entanglement and use adaptive optics to deal with the effects of atmospheric turbulence. To generate entangled photons, the system uses mature telecommunications devices like a C-band tunable laser, periodically poled Lithium Niobate (PPLN) waveguides, and...
Published: 11/4/2025
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Inventor(s): Ivan Djordjevic, Vijay Nafria
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Imaging & Optics > Sensors and Detection
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Spectrometer-Free Biosensing Using Photonic Diffractive Computing for Direct Optical Readout
This invention introduces a photonic diffractive computing biosensing system that converts analyte-induced spectral changes directly into distinct spatial intensity patterns, enabling classification or concentration measurement without spectral reconstruction. An element in the system produces a resonance shift after detection, which produces a diffraction...
Published: 12/23/2025
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Inventor(s): Mohamed ElKabbash
Keywords(s):
Category(s): Technology Classifications > Imaging & Optics > Microscopy, Spectroscopy, Polarimetry, Technology Classifications > Engineering & Physical Sciences > Devices & Instrumentation > Mass Spectrometry, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Medical Devices > Diagnostic, Technology Classifications > Sensors & Controls > Biologic
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