Results 61 to 70 of about 7,267,132 (287)

Learning diffractive optical communication around arbitrary opaque occlusions

open access: yesNature Communications, 2023
Free-space optical communication becomes challenging when an occlusion blocks the light path. Here, we demonstrate a direct communication scheme, passing optical information around a fully opaque, arbitrarily shaped occlusion that partially or entirely ...
Md Sadman Sakib Rahman   +5 more
doaj   +1 more source

Remote Optical Monitoring in Remotely Power Assisted Passive Optical Networks

open access: yes, 2010
In this paper, the authors present the latest results on a simple and low cost method to achieve a dynamic and flexible network monitoring. By placing several fiber Bragg gratings (FBG) along the passive optical gigabit Ethernet infrastructure (GePON ...
L. Costa   +21 more
core   +1 more source

Architecture‐Driven Sensor Stability in Weft‐Knitted Engineering Textiles

open access: yesAdvanced Engineering Materials, EarlyView.
Textile‐integrated sensor architectures are systematically compared to evaluate their electromechanical behavior under combined mechanical and environmental loading. Pocket‐based integration exhibits stable and reproducible signals, whereas tunnel‐based routing shows higher sensitivity accompanied by increased variability.
Adnan Maroof Khan   +5 more
wiley   +1 more source

Simulation and Evaluation of Ethernet Passive Optical Network

open access: yesTikrit Journal of Engineering Sciences, 2013
     This paper studies simulation and evaluation of Ethernet Passive Optical Network (EPON) system, IEEE802.3ah based OPTISM 3.6 simulation program. The simulation program is used in this paper to build a typical ethernet passive optical network, and to
Salah A. Jaro Alabady
doaj  

Architecture to integrate multiple PONs with long reach DWDM backhaul [PDF]

open access: yes, 2009
This paper demonstrates the feasibility of an architecture that consolidates a number of deployed Passive Optical Network (PON) infrastructures into a long-reach, high-split ratio system which further increases equipment sharing between users.
Shea, D.P., Mitchell, J.E.
core  

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Coherent Optical Interleaved SC-FDM Uplink Scheme for Long-Reach Passive Optical Network

open access: yesIEEE Photonics Journal, 2016
In this paper, we propose a coherent optical interleaved single-carrier frequency-division multiplexing (CO-I-SC-FDM) uplink scheme for the long-reach passive optical network (LR-PON).
Ji Zhou   +8 more
doaj   +1 more source

Wearable Smart Patches on Sustainable Chitosan With Reversible Microbial Growth‐Inhibitory Properties

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT Chitosan, a polysaccharide upcycled from biowaste, has long promised sustainable, biocompatible, and antimicrobial films and devices, an appeal reinforced by its recent regulatory recognition, with several chitosan‐based antibacterial dressings gaining clearance through the Food and Drug Administration's 510(k) pathway.
Jacopo Nicoletti   +16 more
wiley   +1 more source

Análisis de la Expansión de Redes de Acceso Pasivas de Fibra Óptica Gpon y Bpon en la Ciudad de Medellín

open access: yesTecnoLógicas, 2010
In this work, we present an analysis of the Optical Passive Fiber Network by measurement of optical power and Optical Reflectometry in the time domine on a network installed in Medellín city.
Alejandro Correa-Muñoz   +1 more
doaj  

Efficient Optical Line Terminal Placement for Passive Optical Network Deployment

open access: yesIEEE Access
A passive optical network (PON) is applied to the last mile network to connect end users to the core network, though its cost-effectiveness and resource-efficiency may not be optimized.
Cheng Jin   +3 more
doaj   +1 more source

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