Results 111 to 120 of about 21,660 (155)

Dynamic scheduling in TWDM-PONs using game theory

Optical Switching and Networking, 2019
Abstract Efficient utilization of Passive Optical Networks (PONs) within a broad region of high user numbers, heavy bandwidth demand and large-scale central servicing stations seems a challenging task in explosive high-bandwidth environments. New Generation PONs (NG-PONs) enable multiple channels in both directions and they seem promising towards ...
Christos Dalamagkas, Panagiotis G. Sarigiannidis, Stelios Kapetanakis, Ioannis D. Moscholios   +3 more
openaire   +1 more source

Flexible TWDM PONs

Optical Fiber Communication Conference, 2014
A flexible TWDM PON is demonstrated with error-free performance using enhanced CFP transceiver for OLT and tunable SFP+ transceiver for ONUs. Such PON system allows pay-as-you-grow deployment, supports load balancing and achieves significant power saving.
openaire   +1 more source

Delay fairness in reconfigurable and energy efficient TWDM PON

Computer Networks, 2016
In Time and Wavelength Division Multiplexed (TWDM) Passive Optical Networks (PONs), dynamically (de)activating Optical Subscriber Units (OSUs) and assigning Optical Network Units (ONUs) to the active OSUs helps improving the OLT energy efficiency and balancing the network load.However, energy efficiency improvement is traded with a delay increase due ...
Luca Valcarenghi, Koteswararao Kondepu, Piero Castoldi   +2 more
openaire   +2 more sources

Reconfiguration Triggering Optimization in TWDM PONs with Fluctuating Load

Optical Fiber Communication Conference, 2016
Reconfiguring TWDM PONs, based on network load, trades OLT energy efficiency improvement with potential average frame delay increase. This paper proves, both through simulations and experiments, that an optimum time exists for triggering reconfiguration that minimizes average frame delay penalty.
KONDEPU, KOTESWARARAO, VALCARENGHI, LUCA, CASTOLDI, Piero   +2 more
openaire   +2 more sources

Cross-talk in TWDM-PON beyond NG-PON2

Optical Fiber Communication Conference, 2015
We assess the influence of cross-talk on the capability of upgradability of TWDMPON beyond NG-PON2 for a higher number of connected customers and for a higher number of wavelength channels using experiments and simulations.
René Bonk, Wolfgang Pöhlmann, Harald Schmuck, Thomas Pfeiffer 0001   +3 more
openaire   +1 more source

A novel TWDM-PON architecture with control channel

2014 12th International Conference on Optical Internet 2014 (COIN), 2014
In this paper, we present a novel TWDM-PON architecture. A 1G control channel is added to control all ONUs. Then, we establish a flexible management framework, including bandwidth assignment mechanism, auto-discovery process and ONU migration mechanism.
null Chengjun Li, null Wei Guo, null Wei Wang, null Weisheng Hu   +3 more
openaire   +1 more source

A Burst-mode Optical Amplifier for TWDM-PON

2019 18th International Conference on Optical Communications and Networks (ICOCN), 2019
One of the critical challenges for TWDM-PON is that the optical amplifiers need to run in the burst-mode, with an up to 40 dB dynamic range. This presentation discusses the corresponding requirements and solutions.
Tianze Wu, Xiaobo Zhu, Xiang Jia, Wenhua Gu   +3 more
openaire   +1 more source

DML based long reach TWDM-PON

International Photonics and OptoElectronics Meetings, 2014
In this paper, we present a review of our recent research results in the area of symmetric 40-Gb/s, long reach time and wavelength division multiplexed passive optical network (TWDM-PON) employing directly modulated lasers (DML).
Lilin Yi, Zhengxuan Li, Xiaodong Wang, Weisheng Hu   +3 more
openaire   +1 more source

Multiple wavelength load balancing in TWDM-PON

2015 Opto-Electronics and Communications Conference (OECC), 2015
We propose a load balancing algorithm to manage data transmission over multiple wavelengths in TWDM-PON. Each wavelength is controlled to be in the balanced load state or lightly-loaded state. Analysis and test demonstrate salient results.
null Dianbo Zhao, null Yuanqiu Luo, null Jianhe Gao, null Huafeng Lin   +3 more
openaire   +1 more source

Optical Network Unit Design for TWDM-PON

International Photonics and Optoelectronics Meetings, 2012
We report our recent progresses on proposing a cost-effective time and wavelength division multiplexed passive optical network (TWDM-PON), especially on the design of the high performance and low cost optical network unit (ONU).
Lilin Yi, Zhengxuan Li, Yi Dong, Shilin Xiao, Weisheng Hu   +4 more
openaire   +1 more source