Results 81 to 90 of about 128,938 (294)

Fabrication of Low-Cost Multiwavelength Laser Arrays for OLTs in WDM-PONs by Combining the SAG and BIG Techniques

open access: yesIEEE Photonics Journal, 2015
We present the fabrication of a low-cost multiwavelength laser array monolithically integrated with a passive optical combiner for optical line terminals (OLTs) in wavelength-division multiplexing (WDM) passive optical networks (PONs).
Liangshun Han   +6 more
doaj   +1 more source

Actuating and Sensing Composites of Liquid Crystal Elastomers and Poly(ionic liquid)s

open access: yesAdvanced Functional Materials, EarlyView.
Ionic conductive, mechanically tough, flexible, and stretchable filaments of a composite material comprising a liquid crystal elastomer and a poly(ionic liquid) are produced through 3D printing, which exhibit large actuation strain under stimulation and electrical resistance variation in response to deformation or environmental condition changes. Their
Zeping Liu   +6 more
wiley   +1 more source

Communication protocols in passive optical networks [PDF]

open access: yes, 2011
Diplomová práce se zabývá porovnáním přenosových parametrů v sítích s časovým dělením a v sítích s vlnovým dělením. V první části práce jsou nastudovány jednotlivé standardy sítí s časovým dělením a specifika sítí s vlnovým dělením, společně s ...
Ševela, Martin
core  

Sensorized Engineered Tissues with Built‐in Thermoregulation and Nutrient Supply

open access: yesAdvanced Functional Materials, EarlyView.
This work introduces a granular hydrogel‐based tissue engineering platform that includes a closed‐loop temperature control to maintain 37°C and sustainably releases nutrients, thereby enabling cells to retain a high viability even if stored at room temperature for up to 24 h.
Antonia Georgopoulou   +5 more
wiley   +1 more source

Passive Optical Networks

open access: yes, 2006
The optical access is gaining more interest as the demand for higher and higher bandwidth is getting stronger. The major drivers for larger bandwidth are the increasing processing power of user terminals and development of services that require substantially larger bandwidth than available in present day access networks.
Lallukka, Sami, Raatikainen, Pertti
openaire   +2 more sources

Dynamic WDM-TDM Access Networks Featuring Wired-Wireless Convergence

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2016
Growth in the use of devices with Internet access and migration of telecommunications to IP technology have made the bandwidth demanded by users appear for the first time in a long time a limited resource.
Elkin Fabián Aguas-Martínez   +2 more
doaj   +1 more source

Shaping of Biohybrid Functional Living Materials

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates a strategy for shaping living mycelium into functional materials by directing its natural growth. Nanoparticles armor hyphae, micron‐scale particles entangle within the network, and printed hydrogel architectures steer expansion, creating defined geometries.
Sarah Schyck   +3 more
wiley   +1 more source

Histogram Based Clustering for Nonlinear Compensation in Long Reach Coherent Passive Optical Networks

open access: yesApplied Sciences, 2019
In order to meet the increasing capacity requirements, network operators are extending their optical infrastructure closer to the end-user while making more efficient use of the resources.
Ivan Aldaya   +8 more
doaj   +1 more source

Fabrication of Pyridinic Nitrogen‐Functionalized Carbon Cloth for High‐Performance Iron‐Chromium Flow Batteries

open access: yesAdvanced Functional Materials, EarlyView.
The carbon cloth electrode with targeted pyridinic nitrogen doping, achieved via urea pyrolysis, effectively modulates the adsorption of Cr(II) species and enhances electron transfer, leading to significantly improved kinetics of the Cr(II)/Cr(III) reaction. The material demonstrates a high discharge capacity of 689.3 mAh and an energy efficiency of 72.
Jinfeng Yi   +9 more
wiley   +1 more source

Power-Aware Logical Topology Design Heuristics in Wavelength-Routing Networks [PDF]

open access: yes, 2011
—Wavelength-Routing (WR) networks are the most common solution for core networks. With the access segment moving from copper to Passive Optical Networks (PON), core networks will become one of the major culprits of Internet power consumption. However, WR
Arsalan Ahmad   +5 more
core   +1 more source

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