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Cognitive HF Radio with Tuned Compact Antenna
This invention is a high frequency (HF) radio with a compact and highly configurable antenna with the ability to overcome interference by changes in the ionosphere. This antenna utilizes machine learning and optimization methods to adjust to the environment.
Background:
Long-distance HF communication relies on ionospheric reflections, especially...
Published: 8/1/2024
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Updated: 6/7/2016
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Inventor(s): Tamal Bose, Hao Xin, Michael Marefat, Hamed Asadi, Ahmed Abdelrahman, Min Liang
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Antenna, Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Wireless, Technology Classifications > Software & Information Technology > Communications & Networking
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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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Updated: 11/30/2014
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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
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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
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Updated: 1/31/2014
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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
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