The Experts below are selected from a list of 33747 Experts worldwide ranked by ideXlab platform
Palle Jeppesen - One of the best experts on this subject based on the ideXlab platform.
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timing jitter tolerant all optical tdm data demultiplexing at 80gbit s using fiber bragg grating based rectangular pulse switching Technology
Optical Fiber Communication Conference, 2003Co-Authors: Ju Han Lee, K.s. Berg, Morten Ibsen, A T Clausen, David J. Richardson, Leif Katsuo Oxenlowe, Palle JeppesenAbstract:We demonstrate the use of fiber Bragg grating based pulse-Shaping Technology for timing-jitter tolerant data demultiplexing in an 80Gbit/s OTDM system. Error-free demultiplexing operation with /spl sim/6ps jitter-tolerance is achieved, showing a 2dB power-penalty improvement compared to demultiplexing without the grating.
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All-optical TDM data demultiplexing at 80 Gb/s with significant timing jitter tolerance using a fiber Bragg grating based rectangular pulse switching Technology
Journal of Lightwave Technology, 2003Co-Authors: L.k. Oxenlwe, K.s. Berg, Morten Ibsen, A T Clausen, David J. Richardson, Palle JeppesenAbstract:We demonstrate the use of fiber Bragg grating based pulse-Shaping Technology to provide timing jitter tolerant data demultiplexing in an 80 Gb/s all-optical time division multiplexing (OTDM) system. Error-free demultiplexing operation is achieved with ∼6 ps timing jitter tolerance using superstructured fiber Bragg grating based 1.7 ps soliton to 10 ps rectangular pulse conversion at the switching pulse input to a nonlinear optical loop mirror (NOLM) demultiplexer comprising highly nonlinear dispersion shifted fiber (HNLF). A 2-dB power-penalty improvement is obtained compared to demultiplexing without the pulse-Shaping grating.
A T Clausen - One of the best experts on this subject based on the ideXlab platform.
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all optical 160 gbit s retiming system using fiber grating based pulse Shaping Technology
Journal of Lightwave Technology, 2009Co-Authors: F Parmigiani, A T Clausen, Leif Katsuo Oxenlowe, Michael Galili, M Ibsen, Darko Zibar, P Petropoulos, D J Richardson, P JeppesenAbstract:This paper demonstrates a retiming system operating at rates of 40 and 160 Gbit/s, which incorporates a superstructured fiber Bragg grating (SSFBG) as a pulse Shaping element. The original data pulses are shaped into flat-topped (rectangular) pulses to avoid conversion of their timing jitter into pulse amplitude noise at the output of a nonlinear fiber-based Kerr switch. Thus retiming is performed in a single step avoiding wavelength conversion. The benefits of using shaped rather than conventional pulse forms in terms of timing jitter reduction are confirmed by bit-error rate (BER) measurements.
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timing jitter tolerant all optical tdm data demultiplexing at 80gbit s using fiber bragg grating based rectangular pulse switching Technology
Optical Fiber Communication Conference, 2003Co-Authors: Ju Han Lee, K.s. Berg, Morten Ibsen, A T Clausen, David J. Richardson, Leif Katsuo Oxenlowe, Palle JeppesenAbstract:We demonstrate the use of fiber Bragg grating based pulse-Shaping Technology for timing-jitter tolerant data demultiplexing in an 80Gbit/s OTDM system. Error-free demultiplexing operation with /spl sim/6ps jitter-tolerance is achieved, showing a 2dB power-penalty improvement compared to demultiplexing without the grating.
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All-optical TDM data demultiplexing at 80 Gb/s with significant timing jitter tolerance using a fiber Bragg grating based rectangular pulse switching Technology
Journal of Lightwave Technology, 2003Co-Authors: L.k. Oxenlwe, K.s. Berg, Morten Ibsen, A T Clausen, David J. Richardson, Palle JeppesenAbstract:We demonstrate the use of fiber Bragg grating based pulse-Shaping Technology to provide timing jitter tolerant data demultiplexing in an 80 Gb/s all-optical time division multiplexing (OTDM) system. Error-free demultiplexing operation is achieved with ∼6 ps timing jitter tolerance using superstructured fiber Bragg grating based 1.7 ps soliton to 10 ps rectangular pulse conversion at the switching pulse input to a nonlinear optical loop mirror (NOLM) demultiplexer comprising highly nonlinear dispersion shifted fiber (HNLF). A 2-dB power-penalty improvement is obtained compared to demultiplexing without the pulse-Shaping grating.
L.k. Oxenlwe - One of the best experts on this subject based on the ideXlab platform.
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All-optical TDM data demultiplexing at 80 Gb/s with significant timing jitter tolerance using a fiber Bragg grating based rectangular pulse switching Technology
Journal of Lightwave Technology, 2003Co-Authors: L.k. Oxenlwe, K.s. Berg, Morten Ibsen, A T Clausen, David J. Richardson, Palle JeppesenAbstract:We demonstrate the use of fiber Bragg grating based pulse-Shaping Technology to provide timing jitter tolerant data demultiplexing in an 80 Gb/s all-optical time division multiplexing (OTDM) system. Error-free demultiplexing operation is achieved with ∼6 ps timing jitter tolerance using superstructured fiber Bragg grating based 1.7 ps soliton to 10 ps rectangular pulse conversion at the switching pulse input to a nonlinear optical loop mirror (NOLM) demultiplexer comprising highly nonlinear dispersion shifted fiber (HNLF). A 2-dB power-penalty improvement is obtained compared to demultiplexing without the pulse-Shaping grating.
Tomasz Czujko - One of the best experts on this subject based on the ideXlab platform.
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Identification of Mechanical Properties for Titanium Alloy Ti-6Al-4V Produced Using LENS Technology
Materials, 2019Co-Authors: Aleksandra Szafrańska, Anna Antolak-dudka, Paweł Bogusz, Dariusz Zasada, Paweł Baranowski, Jerzy Małachowski, Tomasz CzujkoAbstract:This paper presents a characterization study of specimens manufactured from Ti-6Al-4V powder with the use of laser engineered net Shaping Technology (LENS). Two different orientations of the specimens were considered to analyze the loading direction influence on the material mechanical properties. Moreover, two sets of specimens, as-built (without heat treatment) and after heat treatment, were used. An optical measurement system was also adopted for determining deformation of the specimen, areas of minimum and the maximum principal strain, and an effective plastic strain value at failure. The loading direction dependence on the material properties was observed with a significant influence of the orientation on the stress and strain level. Microstructure characterization was examined with the use of optical and scanning electron microscopes (SEM); in addition, the electron backscatter diffraction (EBSD) was also used. The fracture mechanism was discussed based on the fractography analysis. The presented comprehensive methodology proved to be effective and it could be implemented for different materials in additive technologies. The material data was used to obtain parameters for the selected constitutive model to simulate the energy absorbing structures manufactured with LENS Technology. Therefore, a brief discussion related to numerical modelling of the LENS Ti-6Al-4V alloy was also included in the paper. The numerical modelling confirmed the correctness of the acquired material data resulting in a reasonable reproduction of the material behavior during the cellular structure deformation process.
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thin wall tubes with fe3al ss316l graded structure obtained by using laser engineered net Shaping Technology
Materials & Design, 2014Co-Authors: Tomasz Durejko, Michal Zietala, Wojciech Polkowski, Tomasz CzujkoAbstract:Abstract In the present paper, designing, technological and material aspects of the Laser Engineered Net Shaping (LENS) manufacturing process of functionally graded materials (FGMs) components based on the Fe–Al intermetallic alloys, have been described in details. The presented results are divided into two parts as follows: in the first part a model and a LENS manufacturing process of the selected FGMs component (the Fe 3 Al/314L steel tube) have been developed. In the second part, an experimental verification of the model and the process has been carried out. It is shown that, automatically generated code does not allow programming variation of the chemical composition perpendicularly to the wall of the tube. However, applied modification of the code results in a successive direct fabrication of the 316L/Fe 3 Al FGM tubes. Directly fabricated FGM tubes were characterized by a smooth transition between both components (the 316L steel and the Fe 3 Al alloy), a high metallurgical quality and a good reproduction of the designed model’s shape.
Morten Ibsen - One of the best experts on this subject based on the ideXlab platform.
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timing jitter tolerant all optical tdm data demultiplexing at 80gbit s using fiber bragg grating based rectangular pulse switching Technology
Optical Fiber Communication Conference, 2003Co-Authors: Ju Han Lee, K.s. Berg, Morten Ibsen, A T Clausen, David J. Richardson, Leif Katsuo Oxenlowe, Palle JeppesenAbstract:We demonstrate the use of fiber Bragg grating based pulse-Shaping Technology for timing-jitter tolerant data demultiplexing in an 80Gbit/s OTDM system. Error-free demultiplexing operation with /spl sim/6ps jitter-tolerance is achieved, showing a 2dB power-penalty improvement compared to demultiplexing without the grating.
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All-optical TDM data demultiplexing at 80 Gb/s with significant timing jitter tolerance using a fiber Bragg grating based rectangular pulse switching Technology
Journal of Lightwave Technology, 2003Co-Authors: L.k. Oxenlwe, K.s. Berg, Morten Ibsen, A T Clausen, David J. Richardson, Palle JeppesenAbstract:We demonstrate the use of fiber Bragg grating based pulse-Shaping Technology to provide timing jitter tolerant data demultiplexing in an 80 Gb/s all-optical time division multiplexing (OTDM) system. Error-free demultiplexing operation is achieved with ∼6 ps timing jitter tolerance using superstructured fiber Bragg grating based 1.7 ps soliton to 10 ps rectangular pulse conversion at the switching pulse input to a nonlinear optical loop mirror (NOLM) demultiplexer comprising highly nonlinear dispersion shifted fiber (HNLF). A 2-dB power-penalty improvement is obtained compared to demultiplexing without the pulse-Shaping grating.
