Results 61 to 70 of about 1,458 (149)

Transmission Convergence Layer of NG-PON2 in VPIphotonics Tool

open access: yesJournal of Communications Software and Systems, 2017
Passive optical networks are the most promising solution for access networks. The first standard provided only 155 Mbit/s but current networks work according to ITU-T G.984.3 with 2.5 Gbit/s in downstream.
Tomas Horvath   +4 more
doaj  

Interfacial roughness and temperature dependence of narrow band thin film filters for the DWDM passive optical networks [PDF]

open access: yes, 2016
In the design of new components for passive optical networks (PONs), the non-ideal properties are worth considering. In this paper the influence of interface roughness and temperature changes on final transmittance of downstream channels blocking filters
Ladányi, Libor   +2 more
core   +2 more sources

Compatibility between coherent reflective burst-mode PON and TWDM-PON physical layers [PDF]

open access: yes, 2014
We discuss the compatibility between reflective PON architectures and the recently defined ITU-T G.989.1 TWDM-PON. Focusing on the upstream, we experimentally demonstrate that, by using burst-mode coherent detection at OLT, reflective PON can achieve the
Cho   +10 more
core   +1 more source

Fast synchronization 3R burst-mode receivers for passive optical networks [PDF]

open access: yes, 2014
This paper gives a tutorial overview on high speed burst-mode receiver (BM-RX) requirements, specific for time division multiplexing passive optical networks, and design issues of such BM-RXs as well as their advanced design techniques. It focuses on how
Bauwelinck, Johan   +8 more
core   +2 more sources

Parameters of FTTx Networks [PDF]

open access: yes, 2014
Tato práce se zabývá parametry sítí FTTx a možnostmi zvýšení limitních hodnot některých vybraných parametrů. První a druhá kapitola popisují nezbytnou teorii pro pochopení výstupů v dalších částech práce. V praktické části byla nejdříve provedena analýza
Münster, Petr
core  

25Gb/s PAM4 adaptive receiver equalisation requirements for burst-mode transmission systems [PDF]

open access: yes, 2016
Requirements for burst-mode equalisation in a 25Gb/s PAM4 system for passive optical network upstream traffic are analysed for different linear equaliser solutions, with transmission over 40km of fibre.
Antony, Cleitus   +3 more
core  

O-Band Differential Phase-Shift Quantum Key Distribution in 52-Channel C/L-Band Loaded Passive Optical Network

open access: yes, 2019
A cost-effective QKD transmitter is evaluated in a 16km reach, 2:16-split PON and yields 5.10-7secure bits/pulse. Co-existence with 20 down-and 1 upstream channel is possible at low QBER degradation of 0.93% and 1.1%
Aleksic, Karinou, Patel, Schrenk, Waks
core   +1 more source

Full-Asynchronous Gigabit-Symmetric DPSK Downstream and OOK Upstream OCDMA-PON with Source-Free ONUs Employing All-Optical Self-Clocked Time Gate [PDF]

open access: yes, 2012
We propose an asynchronous gigabit-symmetric optical code division multiplexing access passive optical network (OCDMA-PON) in which optical network units (ONUs) are source-free. In the experiment, we demonstrate a duplex OCDMA system with a 50 km 10 Gbit/
Dai, Bo   +3 more
core   +1 more source

Frequency division multiplexing for very high capacity transmission in bandwidth-limited systems [PDF]

open access: yes, 2017
FDM is shown to achieve high capacity facing system bandwidth limitations and exploiting its flexibility to allocate the subcarriers, also with an effective combination with MDM.
Gatto   +5 more
core   +1 more source

Ultrafast wavelength jumping and wavelength adjustment with low current using monolithically integrated FML for long-reach UDWDM-PON [PDF]

open access: yes, 2016
Ultrafast wavelength jumping at optical network units (ONUs) for an access network with frequency modulated lasers (FMLs) is demonstrated. This FML consists of an intracavity tunable phase section and filtering gain section. It provides a total of 4.2 nm
Chu, Guang Yong, Prat Gomà, Josep Joan
core   +2 more sources

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