Design and implementation of wavelength-flexible network nodes

Nuzman, C.; Leuthold, Juerg; Ryf, Roland; Chandrasekhar, S.; Giles, C.R.; Neilson, David T.

doi:10.1109/jlt.2003.809687

Cited by 40 publications

(15 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nowadays, wide and metro optical networks needs subsystems with fast re-configurability, high capacity, and the ability to handle different modulation formats. All-optical gates enabling simultaneous signal regeneration and wavelength conversion, for instance, would enhance robustness and flexibility in light-wave path assignment operation for next generation wavelength-routed optical networks [1,2].…”

Section: Introductionmentioning

confidence: 99%

Polarization-Independent All-Optical Regenerator for DPSK Data

et al. 2014

View full text Add to dashboard Cite

Abstract:We demonstrate polarization-independent simultaneous all-optical phase-preserving amplitude regeneration and wavelength conversion of NRZ differential phase shift keying (DPSK) data by four-wave mixing (FWM) in a semiconductor optical amplifier (SOA). The dependence upon polarization state of the signals is eliminated by using a co-polarized dual-pump architecture. Investigation on the regenerative capability vs. pumps detuning shows significant BER threshold margin improvement over 6 nm conversion range.

show abstract

Section: Introductionmentioning

confidence: 99%

Polarization-Independent All-Optical Regenerator for DPSK Data

et al. 2014

View full text Add to dashboard Cite

show abstract

“…This issue is due to the fact that the core nodes have very limited or no buffering capability which causes bursts contending for the same output link to suffer losses. Several studies [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] have investigated various aspects of contention resolution in OBS networks. Examples include solutions based on burst segmentation [15], QoS-based burstification [17], classes of traffic isolation by extra offset-time [3], wavelength reservation [19], and burst assembly schemes [20].…”

Section: Introductionmentioning

confidence: 99%

“…Examples include solutions based on burst segmentation [15], QoS-based burstification [17], classes of traffic isolation by extra offset-time [3], wavelength reservation [19], and burst assembly schemes [20]. Another approach for solving contention is based on deflection: in the time domain using FDLs [6,10,11,18,21]; in the space domain using deflection; routing [8,13,21]; or in the wavelength domain using OWCs [1,[6][7][8][22][23][24][25][26]. The authors in Ref.…”

Section: Introductionmentioning

confidence: 99%

Contention resolution and QoS provisioning using sparse fiber delay lines in WDM networks

Houmaidi

Bassiouni

2006

Photon Netw Commun

View full text Add to dashboard Cite

In this paper, we combine fiber delay lines (FDL) and optical wavelength conversion (OWC) as the solution for the burst contention problem in optical burst switching (OBS). We present a placement algorithm, k-WDS, for the sparse placement of FDLs at a set of selected nodes in the network. The algorithm can handle both uniform and non-uniform traffic patterns. Our extensive performance tests show that k-WDS provides more efficient placement of optical fiber delay lines than the well-known approach of placing the resources at nodes with the highest experienced burst loss. Performance results are also given to compare the benefit of using FDLs alone, OWCs alone, as well as a mixture of both FDLs and OWCs. A new algorithm, A-WDS, for the placement of an arbitrary numbers of FDLs and OWCs is presented and evaluated under different uniform and non-uniform traffic loads using network simulation of the NSFNET topology and randomly generated graphs. The paper is concluded by presenting the design of a cost-effective optical switch equipped with variable-delay FDL bank. Based on the switch design, a scheme to provide differentiated services for multiple classes of traffic is presented and evaluated.

show abstract

“…Introduction: All-optical wavelength conversion that utilises the nonlinearity of semiconductor optical amplifiers (SOAs) is a promising technology for the application in fast reconfigurable optical interconnects and switching fabrics in wavelength-division-multiplexed networks [1,2]. To overcome the slow recovery time of the SOA, optical filtering technology is used to enhance the operating speed of the SOA [3,4].…”

mentioning

confidence: 99%