The Experts below are selected from a list of 261 Experts worldwide ranked by ideXlab platform
P.m. Gabla - One of the best experts on this subject based on the ideXlab platform.
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407-km, 2.5-Gbit/s repeaterless transmission using an electroabsorption modulator and remotely pumped erbium-doped fiber post- and pre-amplifiers
IEEE Photonics Technology Letters, 1995Co-Authors: Olivier Gautheron, P.m. Gabla, Philippe Bousselet, G. Grandpierre, Eric Brandon, Jean-pierre Blondel, P. Garabedian, V. HavardAbstract:Using an integrated laser/electroabsorption modulator transmitter, a remotely pumped Postamplifier and a remotely, pumped preamplifier, a repeaterless transmission distance of 407 km over nondispersion shifted fiber is achieved at 2.5 Gbit/s. This experiment takes full advantage of high power 1480 nm pump laser diode modules through optimized remote pumping configurations and benefits from the good behavior of the electroabsorption modulator transmitted waveform in presence of fiber nonlinearity and chromatic dispersion. >
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Bright prospects for erbium-doped fiber amplifiers in future lightwave communication systems
Fiber Laser Sources and Amplifiers III, 1992Co-Authors: P.m. GablaAbstract:In the light of achievable component performance, we discuss from both a theoretical and an experimental point of view the applications of erbium-doped fiber amplifiers (EDFA) in long distance repeaterless digital transmission and analog cable TV distribution. In digital repeaterless systems, EDFA Postamplifiers, preamplifiers and remotely pumped amplifiers are considered. In analog TV distribution networks, EDFA Postamplifiers and in-line amplifiers are evaluated.
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45 dB power budget in a 30-channel AM-VSB distribution system with three cascaded erbium-doped fiber amplifiers
IEEE Photonics Technology Letters, 1992Co-Authors: P.m. Gabla, Christophe Bastide, Y. Cretin, Philippe Bousselet, Annelise Pitel, J.p. BlondelAbstract:The authors demonstrate the distribution of 30 AM-VSB channels using three cascaded erbium-doped fiber amplifiers, with a power budget of 45 dB for a carrier-to-noise ratio of 48 dB. The power budget for a single Postamplifier system is 20 dB for a 52-dB CNR. These high power budgets are obtained through an optimization of the erbium-doped fiber amplifiers' gain and noise characteristics in the saturated regime.
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401 km, 622 Mbit/s and 357 km, 2.488 Gbit/s IM/DD Repeaterless Transmission Experiments using Erbium-Doped Fiber Amplifiers and Error Correcting Code
Optical Amplifiers and Their Applications, 1992Co-Authors: P.m. Gabla, J.l. Pamart, Roland Uhel, E. Leclerc, J.o. Frorud, Francois-xavier Ollivier, S. BorderieuxAbstract:Using erbium-doped fiber Postamplifier, remotely pumped amplifier and preamplifier, along with a forward error correcting code scheme, we achieve the longest reported IM/DD repeaterless transmission distances of 401 km at 622 Mbit/s and 357 km at 2.488 Gbit/s.
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401 km, 622 Mb/s and 357 km, 2.488 Gb/s IM/DD repeaterless transmission experiments using erbium-doped fiber amplifiers and error correcting code
IEEE Photonics Technology Letters, 1992Co-Authors: P.m. Gabla, Roland Uhel, E. Leclerc, J.o. Frorud, Francois-xavier Ollivier, J.l. Pamart, S. BorderieuxAbstract:Record repeaterless transmission distances of 401 km at 622 Mb/s and 357 km at 2.488 Gb/s on nondispersion-shifted fiber are demonstrated. The transmission format is intensity modulation/direct detection (IM/DD), and a forward error correcting code scheme is implemented. Erbium-doped fiber amplifiers are used at the transmit and receive end of the system as Postamplifier, preamplifier, and remotely pumped amplifier.
S. Borderieux - One of the best experts on this subject based on the ideXlab platform.
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401 km, 622 Mbit/s and 357 km, 2.488 Gbit/s IM/DD Repeaterless Transmission Experiments using Erbium-Doped Fiber Amplifiers and Error Correcting Code
Optical Amplifiers and Their Applications, 1992Co-Authors: P.m. Gabla, J.l. Pamart, Roland Uhel, E. Leclerc, J.o. Frorud, Francois-xavier Ollivier, S. BorderieuxAbstract:Using erbium-doped fiber Postamplifier, remotely pumped amplifier and preamplifier, along with a forward error correcting code scheme, we achieve the longest reported IM/DD repeaterless transmission distances of 401 km at 622 Mbit/s and 357 km at 2.488 Gbit/s.
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401 km, 622 Mb/s and 357 km, 2.488 Gb/s IM/DD repeaterless transmission experiments using erbium-doped fiber amplifiers and error correcting code
IEEE Photonics Technology Letters, 1992Co-Authors: P.m. Gabla, Roland Uhel, E. Leclerc, J.o. Frorud, Francois-xavier Ollivier, J.l. Pamart, S. BorderieuxAbstract:Record repeaterless transmission distances of 401 km at 622 Mb/s and 357 km at 2.488 Gb/s on nondispersion-shifted fiber are demonstrated. The transmission format is intensity modulation/direct detection (IM/DD), and a forward error correcting code scheme is implemented. Erbium-doped fiber amplifiers are used at the transmit and receive end of the system as Postamplifier, preamplifier, and remotely pumped amplifier.
G. Grandpierre - One of the best experts on this subject based on the ideXlab platform.
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461-km WDM 8 x 2.5 Gb/s repeaterless transmission using launch signal power in excess of 1 W
IEEE Photonics Technology Letters, 1998Co-Authors: Eric Brandon, G. Grandpierre, Jean-pierre Blondel, A. LombardAbstract:Using a powerful Postamplifier, a remotely pumped preamplifier, chromatic dispersion compensation and forward error correction, a repeaterless transmission distance of 461 km has been achieved at 8/spl times/2.5 Gb/s. This experiment demonstrates the possibility of using launch signal powers in excess of 1 W when the chromatic dispersion compensation is optimized to minimize nonlinear impairments. In addition, 377 km has been achieved by replacing the remotely pumped preamplifier with a distributed Raman preamplifier.
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Error-free unrepeatered WDM 8/spl times/2.5 Gbit/s transmission over 461 km with launch signal power in excess of 1 watt
11th International Conference on Integrated Optics and Optical Fibre Communications. 23rd European Conference on Optical Communications IOOC-ECOC97, 1997Co-Authors: Eric Brandon, G. Grandpierre, Jean-pierre Blondel, A. LombardAbstract:Error-free unrepeatered transmission of eight 2.5 Gbit/s channels is demonstrated over 461 km of pure silica core fibre using a Postamplifier of 1.12 watt, remote preamplification, forward error correction and chromatic dispersion compensation.
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407-km, 2.5-Gbit/s repeaterless transmission using an electroabsorption modulator and remotely pumped erbium-doped fiber post- and pre-amplifiers
IEEE Photonics Technology Letters, 1995Co-Authors: Olivier Gautheron, P.m. Gabla, Philippe Bousselet, G. Grandpierre, Eric Brandon, Jean-pierre Blondel, P. Garabedian, V. HavardAbstract:Using an integrated laser/electroabsorption modulator transmitter, a remotely pumped Postamplifier and a remotely, pumped preamplifier, a repeaterless transmission distance of 407 km over nondispersion shifted fiber is achieved at 2.5 Gbit/s. This experiment takes full advantage of high power 1480 nm pump laser diode modules through optimized remote pumping configurations and benefits from the good behavior of the electroabsorption modulator transmitted waveform in presence of fiber nonlinearity and chromatic dispersion. >
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252 km repeaterless 10 Gb/s transmission demonstration
IEEE Photonics Technology Letters, 1993Co-Authors: G. Grandpierre, Olivier Gautheron, L. Pierre, J. P. Thiery, P. KretzmeyerAbstract:Using a practical erbium-doped fiber Postamplifier, a dual-stage optical preamplifier, a lithium niobate Mach-Zehnder external modulator and a dispersion-shifted line fiber, IM/DD repeaterless transmission over 252 km at 10 Gb/s with a wavelength-independent receiver sensitivity in the 1530-1565-nm range is achieved. >
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252 km Repeaterless 10 Gbit/s Transmission Demonstration
Conference on Optical Fiber Communication International Conference on Integrated Optics and Optical Fiber Communication, 1993Co-Authors: Olivier Gautheron, G. Grandpierre, L. Pierre, J. P. Thiery, P. KretzmeyerAbstract:Using a practical erbium-doped fiber Postamplifier, a dual-stage optical preamplifier, a lithium niobate Mach-Zehnder external modulator and a dispersion-shifted line fiber, we achieve the longest reported IM/DD repeaterless transmission distance of 252 km at 10 Gbit/s with a wavelength independent receiver sensitivity in the 1530-1565 nm range.
Eric Brandon - One of the best experts on this subject based on the ideXlab platform.
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461-km WDM 8 x 2.5 Gb/s repeaterless transmission using launch signal power in excess of 1 W
IEEE Photonics Technology Letters, 1998Co-Authors: Eric Brandon, G. Grandpierre, Jean-pierre Blondel, A. LombardAbstract:Using a powerful Postamplifier, a remotely pumped preamplifier, chromatic dispersion compensation and forward error correction, a repeaterless transmission distance of 461 km has been achieved at 8/spl times/2.5 Gb/s. This experiment demonstrates the possibility of using launch signal powers in excess of 1 W when the chromatic dispersion compensation is optimized to minimize nonlinear impairments. In addition, 377 km has been achieved by replacing the remotely pumped preamplifier with a distributed Raman preamplifier.
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Error-free unrepeatered WDM 8/spl times/2.5 Gbit/s transmission over 461 km with launch signal power in excess of 1 watt
11th International Conference on Integrated Optics and Optical Fibre Communications. 23rd European Conference on Optical Communications IOOC-ECOC97, 1997Co-Authors: Eric Brandon, G. Grandpierre, Jean-pierre Blondel, A. LombardAbstract:Error-free unrepeatered transmission of eight 2.5 Gbit/s channels is demonstrated over 461 km of pure silica core fibre using a Postamplifier of 1.12 watt, remote preamplification, forward error correction and chromatic dispersion compensation.
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481 km, 2.5 Gbit/s and 501 km, 622 Mbit/s unrepeatered transmission using forward error correction and remotely pumped Postamplifiers and preamplifiers
Electronics Letters, 1995Co-Authors: O. Gautheron, Eric Brandon, S.s. Sian, C. Grandpierre, J.l. Pamart, T. Barbier, E. Bertin, P. Bonno, M. Genot, P. MarmierAbstract:Using forward error correction, a remotely pumped Postamplifier and a remotely pumped preamplifier error-free unrepeatered transmission on nondispersion shifted fibre is demonstrated over record distances of 481 km at 2.5 Gbit/s and 501 km at 622 Mbit/s.
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407-km, 2.5-Gbit/s repeaterless transmission using an electroabsorption modulator and remotely pumped erbium-doped fiber post- and pre-amplifiers
IEEE Photonics Technology Letters, 1995Co-Authors: Olivier Gautheron, P.m. Gabla, Philippe Bousselet, G. Grandpierre, Eric Brandon, Jean-pierre Blondel, P. Garabedian, V. HavardAbstract:Using an integrated laser/electroabsorption modulator transmitter, a remotely pumped Postamplifier and a remotely, pumped preamplifier, a repeaterless transmission distance of 407 km over nondispersion shifted fiber is achieved at 2.5 Gbit/s. This experiment takes full advantage of high power 1480 nm pump laser diode modules through optimized remote pumping configurations and benefits from the good behavior of the electroabsorption modulator transmitted waveform in presence of fiber nonlinearity and chromatic dispersion. >
David M. Holburn - One of the best experts on this subject based on the ideXlab platform.
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A novel pixellated solid-state photon detector for enhancing the Everhart-Thornley detector.
Microscopy Research and Technique, 2013Co-Authors: Joon Huang Chuah, David M. HolburnAbstract:This article presents a pixellated solid-state photon detector designed specifically to improve certain aspects of the existing Everhart-Thornley detector. The photon detector was constructed and fabricated in an Austriamicrosystems 0.35 µm complementary metal-oxide-semiconductor process technology. This integrated circuit consists of an array of high-responsivity photodiodes coupled to corresponding low-noise transimpedance amplifiers, a selector-combiner circuit and a variable-gain Postamplifier. Simulated and experimental results show that the photon detector can achieve a maximum transimpedance gain of 170 dBΩ and minimum bandwidth of 3.6 MHz. It is able to detect signals with optical power as low as 10 nW and produces a minimum signal-to-noise ratio (SNR) of 24 dB regardless of gain configuration. The detector has been proven to be able to effectively select and combine signals from different pixels. The key advantages of this detector are smaller dimensions, higher cost effectiveness, lower voltage and power requirements and better integration. The photon detector supports pixel-selection configurability which may improve overall SNR and also potentially generate images for different analyses. This work has contributed to the future research of system-level integration of a pixellated solid-state detector for secondary electron detection in the scanning electron microscope.
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Design of Pixellated CMOS Photon Detector for Secondary Electron Detection in the Scanning Electron Microscope
Advances in OptoElectronics, 2011Co-Authors: Joon Huang Chuah, David M. HolburnAbstract:This paper presents a novel method of detecting secondary electrons generated in the scanning electron microscope (SEM). The method suggests that the photomultiplier tube (PMT), traditionally used in the Everhart-Thornley (ET) detector, is to be replaced with a configurable multipixel solid-state photon detector offering the advantages of smaller dimension, lower supply voltage and power requirements, and potentially cheaper product cost. The design of the proposed detector has been implemented using a standard 0.35 μm CMOS technology with optical enhancement. This microchip comprises main circuit constituents of an array of photodiodes connecting to respective noise-optimised transimpedance amplifiers (TIAs), a selector-combiner (SC) circuit, and a Postamplifier (PA). The design possesses the capability of detecting photons with low input optical power in the range of 1 nW with 100 μm × 100 μm sized photodiodes and achieves a total amplification of 180 dBΩ at the output.