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Search Results - stavros+vakalis
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Radar Detection of Specular Targets Using Distributed Repeaters
Advantages: Mitigates specular reflections that degrade radar performance Uses low-cost, distributed repeater elements to improve target detection No need for time or phase synchronization, enabling easy deployment Enhances image quality and resolution in challenging environments Summary: Millimeter-wave (mmWave) radar systems are widely used...
Published: 3/27/2025
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Inventor(s):
Stavros Vakalis
,
Tasin Nusrat
Keywords(s):
Optics and Imaging
Category(s):
Technology Classifications > Engineering > Sensors
Non-Cooperative High-Efficiency Multi-User Ranging Using OFDM Signals
Advantages: Allows simultaneous sensing and communication without coordination between users Uses existing OFDM signals, eliminating the need for extra hardware or bandwidth Improves spectral and temporal efficiency, reducing system complexity Avoids interference and ghost signals even with multiple users in the same frequency band Summary: Modern...
Published: 3/27/2025
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Inventor(s):
Stavros Vakalis
,
Mehmet Yazgan
Keywords(s):
Telecommunication / Wireless Communication
Category(s):
Technology Classifications > Electronics > Electronics Sensors
,
Technology Classifications > Computer Science > Network Systems
PMU-Embedded Analytics for Online Event Detection and Classification in Power Grids
The energy requirement of the world is increasing exponentially every year. With the power demand sites concentrated in the region with the highest population density, energy production sites must be located remotely. This isolation requires lengthy and complicated grids to be designed and manufactured to transmit power over long distances. Grid failures...
Published: 2/18/2025
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Inventor(s):
Payman Dehghanian
,
Shiyuan Wang
,
Li Li
Keywords(s):
Category(s):
Technology Classifications > Industrial or Consumer Tech > Energy Infrastructure and Environment
Distributed Feedback Fiber Laser Pumped by Multimode Diode Lasers
Researchers at the University of Arizona College of Optical Sciences and Canada's Carleton University recently succeeded in fabricating high reflectivity (>99%) Fiber Bragg Gratings (FBGs) into phosphate glass fibers using UV light and a phase mask technique. With this new manufacturing technique, fiber lasers can be created as single monolithic...
Published: 4/3/2023
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Inventor(s):
Nasser Peyghambarian
,
Axel Schülzgen
,
Li Li
,
Jacques Albert
Keywords(s):
Category(s):
Technology Classifications > Imaging & Optics
,
Technology Classifications > Imaging & Optics > Lasers & Other Sources
All-Fiber Multicore Fiber Laser Devices
Researchers at the University of Arizona have developed a compact, power-scalable, alignment-free fiber laser that takes a new approach to stabilizing phase-locked operation of multi-core fiber lasers by completely removing all free space optical components. This high-brightness, all-fiber laser package uses passive optical fiber spliced at both ends...
Published: 4/3/2023
|
Inventor(s):
Nasser Peyghambarian
,
Axel Schülzgen
,
Li Li
Keywords(s):
Category(s):
Technology Classifications > Imaging & Optics
,
Technology Classifications > Imaging & Optics > Fiber Optics
,
Technology Classifications > Imaging & Optics > Lasers & Other Sources