Results 1 to 10 of about 5,459 (145)

Large-scale integrated optoelectronic chaos for machine learning acceleration [PDF]

open access: yesNature Communications
Chaos has emerged as a useful resource for machine learning, yet traditional nonlinear circuits face speed bottlenecks. Optical chaos sources offer an attractive alternative with ultra-wideband operation and massive parallelism, but existing schemes must
Zhouyang Pan   +17 more
doaj   +2 more sources

Photonics-Based Microwave Image-Reject Mixer

open access: yesPhotonics, 2018
Recent developments in photonics-based microwave image-reject mixers (IRMs) are reviewed with an emphasis on the pre-filtering method, which applies an optical or electrical filter to remove the undesired image, and the phase cancellation method, which ...
Dan Zhu, Shilong Pan
doaj   +3 more sources

Photonic computing enabled end-to-end image compression and reconstruction with adjustable ratio and high-fidelity [PDF]

open access: yesNature Communications
The rapid development of remote sensing, satellite radar, and medical equipment has created an imperative demand for ultra-efficient image compression and reconstruction. We demonstrate an end-to-end image compression and reconstruction approach using an
Yuhang Wang   +5 more
doaj   +2 more sources

Observation of parity-time symmetry in microwave photonics [PDF]

open access: yesLight: Science and Applications, 2018
José Capmany
exaly   +2 more sources

Single-photon microwave photonics

open access: yesScience Bulletin, 2022
With the rapid development of microwave photonics technology, high-speed processing and ultra-weak signal detection capability have become the main bottlenecks in many applications. Thanks to the ultra-weak signal detection capability and the extremely low timing jitter properties of single-photon detectors, the combination of single-photon detection ...
Ye, Yang   +9 more
openaire   +3 more sources

Integrated Microwave Photonic Filters [PDF]

open access: yesOptical Fiber Communication Conference (OFC) 2021, 2020
Microwave signal filtering is a fundamental and central functionality in radio frequency systems. We review the principles, architectures, and superior performance of emerging integrated microwave photonic filters enabled by on-chip linear and nonlinear photonic devices.
Yang Liu   +3 more
openaire   +3 more sources

Temperature Characterization of Liquid Crystal Dielectric Image Line Phase Shifter for Millimeter-Wave Applications

open access: yesCrystals, 2021
In this paper we investigate the temperature dependent behavior of a liquid crystal (LC) loaded tunable dielectric image guide (DIG) phase shifter at millimeter-wave frequencies from 80 GHz to 110 GHz for future high data rate communications.
Henning Tesmer   +5 more
doaj   +1 more source

Reconfigurable Liquid Crystal Dielectric Image Line Leaky Wave Antenna at W-Band

open access: yesIEEE Journal of Microwaves, 2022
This paper presents a reconfigurable dielectric image line leaky wave antenna at W-band. Reconfigurability is achieved by applying bias to anisotropic liquid crystal (LC) filled into the antenna. Instead of separating RF components and DC-bias network by
Henning Tesmer   +4 more
doaj   +1 more source

Bandwidth and Center Frequency Reconfigurable Waveguide Filter Based on Liquid Crystal Technology

open access: yesIEEE Journal of Microwaves, 2022
This paper presents for the first time a fully electronically reconfigurable waveguide filter tunable in bandwidth and center frequency based on liquid crystal (LC) technology.
Fynn Kamrath   +10 more
doaj   +1 more source

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