Results 11 to 20 of about 584,260 (294)

Optical interconnection networks based on microring resonators [PDF]

open access: yes, 2012
Optical microring resonators can be integrated on a chip to perform switching operations directly in the optical domain. Thus they become a building block to create switching elements in on-chip optical interconnection networks, which promise to overcome
Andrea Bianco   +17 more
core   +1 more source

A cross-layer heuristic algorithm for addressing shadowing problem in optical attocell networks [PDF]

open access: yes, 2020
The performance of visible light communication (VLC)-based optical attocell networks degrades due to shadowing caused by opaque objects. In order to improve reliability, we propose a cross-layer algorithm to find the optimal routing and resource ...
Colle, Didier   +2 more
core   +1 more source

MDM-TDM PON Utilizing Self-Coherent Detection-Based OLT and RSOA-Based ONU for High Power Budget

open access: yesIEEE Photonics Journal, 2016
A cost-effective mode-division-multiplexing and time-division-multiplexing passive optical network (MDM-TDM PON) utilizing a self-coherent detection for upstream signal at optical line terminal (OLT) and a high-gain reflective semiconductor optical ...
Yuanxiang Chen   +11 more
doaj   +1 more source

Wavelength Reuse for Short-Reach Optical Access Network Utilizing MDM

open access: yesIEEE Photonics Journal, 2017
Wavelength reuse has been proposed as an effective solution to realize colorless optical network units (ONUs) for next-generation passive optical network with simplified maintenance and reduced cost.
Yuanxiang Chen   +9 more
doaj   +1 more source

Free-space scattering characterization of ultrathin reflective metasurfaces and high-Q-factor sensing methods for conductor-backed materials

open access: yesResults in Physics, 2022
Metal-backed materials establish the bridge linking traveling and surface waves for beam manipulation. Based on S-parameters, extracting the constitutive effective parameters (CEPs) is significant for characterizing their electromagnetic (EM) properties.
Feng-Yuan Han   +8 more
doaj   +1 more source

Optical monitoring system for scalable all-optical networks [PDF]

open access: yes, 1997
High traffic and high capacity communications are believed to become cost-effective with the use of all-optical networks based on OFDM (optical frequency division multiplexing). In such networks, new strategies for OA and M (operation, administration and
Amrani, Abdelhafid   +2 more
core   +1 more source

Weighted Inter-frame Averaging-Based Channel Estimation for CO-OFDM System

open access: yesIEEE Photonics Journal, 2013
We propose an efficient channel estimation method for coherent optical orthogonal frequency-division multiplexing (CO-OFDM) based on weighted inter-frame averaging (WIFA), in which the channel estimation results of the adjacent frames are averaged to ...
Hui Zhao   +7 more
doaj   +1 more source

Bidirectional wavelength-division multiplexing transmission over installed fibre using a simplified optical coherent access transceiver

open access: yesNature Communications, 2017
The signalling scheme used in access networks require electrical bandwidths many times greater than subscribers can utilise. Here, the authors describe a promising approach to achieve bidirectional transmission with bandwidth-efficient yet low-complexity
M. S. Erkılınç   +6 more
doaj   +1 more source

Broadband Photonic Down-Conversion Preprocessor for ADC With Arcsine Equalization

open access: yesIEEE Photonics Journal, 2020
It is a challenge to convert broadband millimeter-wave signals directly with electronic analog-to-digital converters (ADCs). The photonic down-conversion preprocessor is a promising solution.
Rui Guo   +6 more
doaj   +1 more source

Fair Resource Allocation Based on User Satisfaction in Multi-OLT Virtual Passive Optical Network

open access: yesIEEE Access, 2020
In this paper, a fair resource allocation mechanism based on user satisfaction in multiple optical line terminal (multi-OLT) virtual passive optical network (VPON) is proposed.
Nianfei Zhan   +3 more
doaj   +1 more source

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