Results 11 to 20 of about 17,887,288 (302)

Optical Link Design for Quantum Key Distribution-Integrated Optical Access Networks

open access: yesPhotonics
To achieve commercial scalability, fiber-based quantum key distribution (QKD) systems must be integrated into existing optical communication infrastructures, rather than deployed exclusively on dedicated dark fibers.
Sunghyun Bae, Seok-Tae Koh
doaj   +2 more sources

Small-Size Reconfigurable Loop Antenna for Mobile Phone Applications

open access: yesIEEE Access, 2016
A small-size reconfigurable loop antenna for mobile phone applications with a compact volume of 55 × 5 × 3 mm3 is proposed. In addition to the traditional three loop antenna modes, namely, 0.5-λ, 1-λ, and 1.5-λ modes ...
Hao Wang   +6 more
doaj   +1 more source

Analysis of Cascaded Soliton Spectral Tunneling Effect in Segmented Fibers With Engineered Dispersion

open access: yesIEEE Photonics Journal, 2013
The cascaded soliton spectral tunneling (SST) effect is proposed and numerically investigated in multiple optical fiber segments, which work together to transfer the soliton pulse over a wide wavelength span. A triple-cladding fiber and a solid core step-
Shaofei Wang   +4 more
doaj   +1 more source

Wavelength Control of Optical Sources for Dense WDM Optical Access Network [PDF]

open access: yes, 2005
This paper describes a high density wavelength division multiplexing (WDM) optical access network for broadband access networks. In the network, a wavelength is pre-assigned to each subscriber.
Yamamoto, Takaya   +2 more
core   +1 more source

Employing Hybrid sub-Nyquist Sampling Rates to Support Heterogeneous Services of Varying Capacity in 25-Gbps DDM-OFDM-PON

open access: yesIEEE Photonics Journal, 2018
Delay-division-multiplexing (DDM) involves the use of signal preprocessing for the detection of data via sub-Nyquist analog-to-digital sampling, based on preallocated relative sampling delays among optical network users (ONUs) in an orthogonal frequency ...
Jhih-Hao Hsu   +7 more
doaj   +1 more source

Next Generation Optical Access Networks [PDF]

open access: yes2006 3rd International Conference on Broadband Communications, Networks and Systems, 2006
The last mile continues to be a major bottleneck in the Internet. Its low bandwidth and flexibility prevents the deployment of new services and the development of new applications. In this paper we present a summary of current efforts in access networks research, focusing in particular on fiber optic solutions. We present the Stanford University aCCESS
David Gutierrez   +7 more
openaire   +1 more source

A high-speed optical star network using TDMA and all-optical demultiplexing techniques [PDF]

open access: yes, 1996
The authors demonstrate the use of time-division multiplexing (TDM) to realize a high capacity optical star network. The fundamental element of the demonstration network is a 10 ps, wavelength tunable, low jitter, pulse source. Electrical data is encoded
Remi Boittin   +8 more
core   +2 more sources

Cross-Domain Resource Allocation Scheme with Unified Control Architecture in Software Defined Optical Access Network

open access: yes, 2022
With the rapid development of communication and the rise of new network services, the resource provisioning of the optical access network becomes more significant than before, especially under the multiple-domain networking situation with the requirement
Bowen Bao   +8 more
core   +1 more source

Research and simulation of timing attacks on ECC

open access: yes网络与信息安全学报, 2016
Based on the hidden Markov model (HMM) idea,a timing attack on the elliptic curve digital signature system,which adopted the “double-and-add” scalar multiplication,was proposed.Simulation experiments on the secure Koblitz curve which released by the ...
Hui-hui JIA,Jian GU,Hao-hao SONG,Di TANG   +1 more
doaj   +1 more source

Broadband Backhaul Communication for Stratospheric Platforms: The Stratospheric Optical Payload Experiment (STROPEX) [PDF]

open access: yes, 2006
A high bitrate optical downlink was performed by the stratospheric optical payload experiment (STROPEX), a part of the EU CAPANINA project. The STROPEX objectives were to design and build the necessary hardware to demonstrate an optical backhaul downlink
Knapek, Markus   +9 more
core   +1 more source

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