Results 21 to 30 of about 4,917 (222)

Adaptive-Modulation-Enabled WDM Impairment Reduction in Multichannel Optical OFDM Transmission Systems for Next-Generation PONs

open access: yesIEEE Photonics Journal, 2010
The transmission performance of multichannel adaptively modulated optical orthogonal frequency-division multiplexing (AMOOFDM) signals is investigated numerically, for the first time, in optical-amplification-free and chromatic-dispersion-compensation ...
E. Giacoumidis   +4 more
doaj   +1 more source

Multifunctional operation of a fiber Bragg grating in a WDM/SCM radio over fiber distribution system [PDF]

open access: yes, 2004
A radio over fiber distribution system incorporating both sub-carrier multiplexing (SCM) and wavelength division multiplexing (WDM) technologies is presented.
Anandarajah, Prince M.   +2 more
core   +1 more source

Optical Networking Beyond WDM

open access: yesIEEE Photonics Journal, 2012
Wavelength-division multiplexing (WDM) has been the workhorse of data networks, accommodating exponential traffic growth for two decades. Recently, however, progress in WDM capacity research has markedly slowed down as experiments are closely approaching
Peter J. Winzer
doaj   +1 more source

Design and Study on 25 Gbit/s Optical Transmitter Module based on Silicon Optical Scheme

open access: yesGuangtongxin yanjiu, 2021
With the rapid development of optical communication technology, the capacity of optical transmission increases dramatically. The flexible requirements for the management and scheduling of Dense Wavelength Division Multiplexing (DWDM) network systems also
Xuan-xuan CHENG   +8 more
doaj   +1 more source

SOA Based Photonic Integrated WDM Cross-Connects for Optical Metro-Access Networks

open access: yesApplied Sciences, 2017
We present a novel optical metro node architecture that exploits the Wavelength Division Multiplexing (WDM) optical cross-connect nodes for interconnecting network elements, as well as computing and storage resources.
Nicola Calabretta   +3 more
doaj   +1 more source

Spatial and Wavelength Division Joint Multiplexing System Design for MIMO-OFDM Visible Light Communications

open access: yesIEEE Access
The low-pass characteristics of front-end elements including light-emitting diodes (LEDs) and photodiodes (PDs) limit the transmission data rate of visible light communication (VLC) and Light Fidelity (LiFi) systems.
Cheng Chen   +4 more
doaj   +1 more source

16-Channel Wavelength Division Multiplexers Based on Subwavelength Grating

open access: yesApplied Sciences, 2023
Wavelength Division Multiplexing (WDM) plays an important role in optical interconnection. In this paper, a 16-channel WDM device is designed on a Silicon-On-Insulator (SOI) substrate by using a sub-wavelength grating (SWG) structure, which can cover O ...
Yawen Bai   +4 more
doaj   +1 more source

OTDM add-drop multiplexer based on time-frequency signal processing

open access: yes, 2006
A time-division add-drop multiplexer capable of high-extinction-ratio operation is presented both theoretically and experimentally. The approach used is based on time-to-frequency domain conversion of optical signals and relies upon the switching of ...
Ibsen, M.   +4 more
core   +1 more source

Silicon-Based-Chip Multiplexing Technologies and Devices

open access: yesDianxin kexue, 2015
As the demands of the data communications increase quickly for the applications of cloud-computing as well as data centers,optical interconnects have been very attractive because of the unique advantages on the aspects of low power consumption,high speed
Daoxin Dai, Jian Wang, Sitao Chen
doaj   +2 more sources

Effects of weak input side mode suppression ratio and output filtration on the intensity noise of a self-seeded gain switched optical pulses at 2.5 GHz [PDF]

open access: yes, 2005
Mode partition noise is shown to be a cause for concern in terms of the intensity noise induced on a self-seeded gain-switched pulse when filtering is used to increase the side mode suppression ratio (SMSR) of the output signal to >30 dB.
Rensing, Marc   +5 more
core   +1 more source

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