The Experts below are selected from a list of 8136 Experts worldwide ranked by ideXlab platform
Michael J Connelly - One of the best experts on this subject based on the ideXlab platform.
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Optical phase conjugation technique using four wave mixing in Semiconductor Optical Amplifier
Electronics Letters, 2011Co-Authors: C.l. Janer, Michael J ConnellyAbstract:A Semiconductor-Optical-Amplifier-based technique to generate the conjugate of an Optical signal is presented. The original probe signal and its conjugate appear at opposite ends of the Semiconductor Optical Amplifier, improving, therefore, existing techniques. The basic concept was proposed many years ago but, to the best of our knowledge, has never been experimentally verified. An explanation is given as to why this was not possible, what modifications render the idea practical are explained and experimental results that prove its feasibility are shown.
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Semiconductor Optical Amplifier Pattern Effect Suppression Using a Birefringent Fiber Loop
IEEE Photonics Technology Letters, 2010Co-Authors: Kyriakos E. Zoiros, Colm O'riordan, Michael J ConnellyAbstract:The capability of a birefringent fiber loop to suppress the pattern effect in a Semiconductor Optical Amplifier is experimentally demonstrated. The results verify that compared to direct signal amplification this scheme achieves reduced amplitude modulation, enhanced eye diagram extinction ratio, pulse reshaping, tolerance to long string of spaces, low power penalty, and extended input power dynamic range.
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wide band steady state numerical model and parameter extraction of a tensile strained bulk Semiconductor Optical Amplifier
IEEE Journal of Quantum Electronics, 2007Co-Authors: Michael J ConnellyAbstract:A wide-band steady-state model of a tensile-strained bulk InGaAsP Semiconductor Optical Amplifier is described. An efficient numerical algorithm of the steady-state model and a parameter extraction algorithm based on the Levenberg-Marquardt method are described. The parameter extraction technique is used to determine the material Auger recombination coefficient, effective intraband lifetime, the average strain and molar fraction of Arsenic in the active region. Simulations and comparisons with experiment are given which demonstrate the accuracy and versatility of the model
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all Optical and gate with improved extinction ratio using signal induced nonlinearities in a bulk Semiconductor Optical Amplifier
Optics Express, 2006Co-Authors: Liqiang Guo, Michael J ConnellyAbstract:An all-Optical AND gate based on Optically induced nonlinear polarization rotation of a probe light in a bulk Semiconductor Optical Amplifier is realized at a bit rate of 2.5Gbit/s. By operating the AND gate in an up and inverted wavelength conversion scheme, the extinction ratio is improved by 8dB compared with previously published work.
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wideband Semiconductor Optical Amplifier steady state numerical model
IEEE Journal of Quantum Electronics, 2001Co-Authors: Michael J ConnellyAbstract:A wideband steady-state model and efficient numerical algorithm for a bulk InP-InGaAsP homogeneous buried ridge stripe Semiconductor Optical Amplifier is described. The model is applicable over a wide range of operating regimes. The relationship between spontaneous emission and material gain is clarified. Simulations and comparisons with experiment are given which demonstrate the versatility of the model.
H.j.s. Dorren - One of the best experts on this subject based on the ideXlab platform.
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error free 320 to 40 gbit s Optical demultiplexing based on blueshift filtering in a quantum dot Semiconductor Optical Amplifier
Optics Letters, 2013Co-Authors: Motoharu Matsuura, Nicola Calabretta, O Raz, Fausto Gomezagis, H.j.s. DorrenAbstract:We present an ultrahigh-speed Optical demultiplexing concept based on Optical blue-shift filtering in a quantum-dot Semiconductor Optical Amplifier (QD-SOA). Using a simple scheme, a QD-SOA and an Optical bandpass filter, we have successfully achieved error-free operations at 40 Gbit/s on all the extracted tributaries from an aggregated traffic at 320 Gbit/s.
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all Optical demultiplexing of 640 to 40 gbits s using filtered chirp of a Semiconductor Optical Amplifier
Optics Letters, 2007Co-Authors: Eduward Tangdiongga, Giok Djan Khoe, H.j.s. Dorren, Huug De Waardt, A M J Koonen, Ian BennionAbstract:We present a high-capacity ultrafast all-Optical time demultiplexer that can be employed to retrieve 40 gigabits/second (Gb/s) base-rate channels from a 640 Gb/s single-polarized signal. The demultiplexer utilizes ultrafast effects of filtered chirp of a Semiconductor Optical Amplifier. Excellent demultiplexing performance is shown at very low switching powers: +8 dBm (640 Gb/s data) and −14 dBm (40 GHz clock). The demultiplexer has a simple structure and, in principle, allows monolithic integration.
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error free 320 gb s all Optical wavelength conversion using a single Semiconductor Optical Amplifier
Optical Fiber Communication Conference, 2007Co-Authors: Yong Liu, Giok Djan Khoe, Huug De Waardt, Eduward Tangdiongga, A M J Koonen, Ian Bennion, Xuewen Shu, H.j.s. DorrenAbstract:We demonstrate error-free wavelength conversion at 320 Gb/s by employing a Semiconductor Optical Amplifier that fully recovers in 56 ps. Error-free operation is achieved without using forward error correction technology. We employ Optical filtering to select the blue sideband of the spectrum of the probe light, to utilize fast chirp dynamics introduced by the Amplifier, and to overcome the slow gain recovery. This leads to an effective recovery time of less than 1.8 ps for the wavelength converter. The wavelength converter has a simple configuration and is implemented by using fiber-pigtailed components. The concept allows photonic integration
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80 gbit s wavelength conversion using Semiconductor Optical Amplifier and Optical bandpass filter
Electronics Letters, 2005Co-Authors: Yong Liu, Giok Djan Khoe, Huug De Waardt, Eduward Tangdiongga, S Zhang, H.j.s. DorrenAbstract:A wavelength converter is presented that is made out of a Semiconductor Optical Amplifier and an Optical bandpass filter. Error-free inverted wavelength conversion is demonstrated at a bitrate of 80 Gbit/s. This approach can be exploited at higher bitrates. A clear open eye indicating error-free wavelength conversion at 160 Gbit/s is also presented. This wavelength converter has a simple configuration and allows photonic integration.
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Optical signal processing based on self induced polarization rotation in a Semiconductor Optical Amplifier
Journal of Lightwave Technology, 2004Co-Authors: Nicola Calabretta, Giok Djan Khoe, M T Hill, Huug De Waardt, Yong Liu, F M Huijskens, H.j.s. DorrenAbstract:We demonstrate novel Optical signal processing functions based on self-induced nonlinear polarization rotation in a Semiconductor Optical Amplifier (SOA). Numerical and experimental results are presented, which demonstrate that a nonlinear polarization switch can be employed to achieve all-Optical logic. We demonstrate an all-Optical header processing system, an all-Optical seed pulse generator for packet synchronization, and an all-Optical arbiter that can be employed for Optical buffering at a bit rate of 10 Gb/s. Experimental results indicate that Optical signal processing functions based on self-polarization rotation have a higher extinction ratio and a lower power operation compared with similar functions based on self-phase modulation.
Nicola Calabretta - One of the best experts on this subject based on the ideXlab platform.
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error free 320 to 40 gbit s Optical demultiplexing based on blueshift filtering in a quantum dot Semiconductor Optical Amplifier
Optics Letters, 2013Co-Authors: Motoharu Matsuura, Nicola Calabretta, O Raz, Fausto Gomezagis, H.j.s. DorrenAbstract:We present an ultrahigh-speed Optical demultiplexing concept based on Optical blue-shift filtering in a quantum-dot Semiconductor Optical Amplifier (QD-SOA). Using a simple scheme, a QD-SOA and an Optical bandpass filter, we have successfully achieved error-free operations at 40 Gbit/s on all the extracted tributaries from an aggregated traffic at 320 Gbit/s.
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Optical signal processing based on self induced polarization rotation in a Semiconductor Optical Amplifier
Journal of Lightwave Technology, 2004Co-Authors: Nicola Calabretta, Giok Djan Khoe, M T Hill, Huug De Waardt, Yong Liu, F M Huijskens, H.j.s. DorrenAbstract:We demonstrate novel Optical signal processing functions based on self-induced nonlinear polarization rotation in a Semiconductor Optical Amplifier (SOA). Numerical and experimental results are presented, which demonstrate that a nonlinear polarization switch can be employed to achieve all-Optical logic. We demonstrate an all-Optical header processing system, an all-Optical seed pulse generator for packet synchronization, and an all-Optical arbiter that can be employed for Optical buffering at a bit rate of 10 Gb/s. Experimental results indicate that Optical signal processing functions based on self-polarization rotation have a higher extinction ratio and a lower power operation compared with similar functions based on self-phase modulation.
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wavelength conversion using nonlinear polarization rotation in a single Semiconductor Optical Amplifier
IEEE Photonics Technology Letters, 2003Co-Authors: M T Hill, Giok Djan Khoe, Huug De Waardt, Eduward Tangdiongga, Nicola Calabretta, H.j.s. DorrenAbstract:We discuss an all-Optical wavelength converter based on nonlinear polarization rotation in a single Semiconductor Optical Amplifier. We show that inverted and noninverted wavelength conversion can be realized. We also demonstrate this wavelength-conversion concept can operate over a large wavelength range. Experiments show that error-free wavelength conversion can be obtained at a bit rate of 10 Gb/s.
Giok Djan Khoe - One of the best experts on this subject based on the ideXlab platform.
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all Optical demultiplexing of 640 to 40 gbits s using filtered chirp of a Semiconductor Optical Amplifier
Optics Letters, 2007Co-Authors: Eduward Tangdiongga, Giok Djan Khoe, H.j.s. Dorren, Huug De Waardt, A M J Koonen, Ian BennionAbstract:We present a high-capacity ultrafast all-Optical time demultiplexer that can be employed to retrieve 40 gigabits/second (Gb/s) base-rate channels from a 640 Gb/s single-polarized signal. The demultiplexer utilizes ultrafast effects of filtered chirp of a Semiconductor Optical Amplifier. Excellent demultiplexing performance is shown at very low switching powers: +8 dBm (640 Gb/s data) and −14 dBm (40 GHz clock). The demultiplexer has a simple structure and, in principle, allows monolithic integration.
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error free 320 gb s all Optical wavelength conversion using a single Semiconductor Optical Amplifier
Optical Fiber Communication Conference, 2007Co-Authors: Yong Liu, Giok Djan Khoe, Huug De Waardt, Eduward Tangdiongga, A M J Koonen, Ian Bennion, Xuewen Shu, H.j.s. DorrenAbstract:We demonstrate error-free wavelength conversion at 320 Gb/s by employing a Semiconductor Optical Amplifier that fully recovers in 56 ps. Error-free operation is achieved without using forward error correction technology. We employ Optical filtering to select the blue sideband of the spectrum of the probe light, to utilize fast chirp dynamics introduced by the Amplifier, and to overcome the slow gain recovery. This leads to an effective recovery time of less than 1.8 ps for the wavelength converter. The wavelength converter has a simple configuration and is implemented by using fiber-pigtailed components. The concept allows photonic integration
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80 gbit s wavelength conversion using Semiconductor Optical Amplifier and Optical bandpass filter
Electronics Letters, 2005Co-Authors: Yong Liu, Giok Djan Khoe, Huug De Waardt, Eduward Tangdiongga, S Zhang, H.j.s. DorrenAbstract:A wavelength converter is presented that is made out of a Semiconductor Optical Amplifier and an Optical bandpass filter. Error-free inverted wavelength conversion is demonstrated at a bitrate of 80 Gbit/s. This approach can be exploited at higher bitrates. A clear open eye indicating error-free wavelength conversion at 160 Gbit/s is also presented. This wavelength converter has a simple configuration and allows photonic integration.
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Optical signal processing based on self induced polarization rotation in a Semiconductor Optical Amplifier
Journal of Lightwave Technology, 2004Co-Authors: Nicola Calabretta, Giok Djan Khoe, M T Hill, Huug De Waardt, Yong Liu, F M Huijskens, H.j.s. DorrenAbstract:We demonstrate novel Optical signal processing functions based on self-induced nonlinear polarization rotation in a Semiconductor Optical Amplifier (SOA). Numerical and experimental results are presented, which demonstrate that a nonlinear polarization switch can be employed to achieve all-Optical logic. We demonstrate an all-Optical header processing system, an all-Optical seed pulse generator for packet synchronization, and an all-Optical arbiter that can be employed for Optical buffering at a bit rate of 10 Gb/s. Experimental results indicate that Optical signal processing functions based on self-polarization rotation have a higher extinction ratio and a lower power operation compared with similar functions based on self-phase modulation.
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nonlinear polarization rotation induced by ultrashort Optical pulses in a Semiconductor Optical Amplifier
Optics Communications, 2003Co-Authors: Xuelin Yang, Giok Djan Khoe, Daan Lenstra, H.j.s. DorrenAbstract:We use a new rate-equation model for the propagation of sub-picosecond polarized Optical pulses in a Semiconductor Optical Amplifier (SOA). This model is based on the decomposition of the polarized Optical field into TE and TM components that interact via the gain saturation, and accounts for two-photon absorption, free-carrier absorption, self- and cross-phase modulation, carrier heating, and spectral and spatial hole burning. For the first time, using our model, we have obtained numerical results for the nonlinear polarization rotation in pump–probe experiments with 200 fs pulses. These results are in good agreement with reported experimental measurements.
M T Hill - One of the best experts on this subject based on the ideXlab platform.
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Optical signal processing based on self induced polarization rotation in a Semiconductor Optical Amplifier
Journal of Lightwave Technology, 2004Co-Authors: Nicola Calabretta, Giok Djan Khoe, M T Hill, Huug De Waardt, Yong Liu, F M Huijskens, H.j.s. DorrenAbstract:We demonstrate novel Optical signal processing functions based on self-induced nonlinear polarization rotation in a Semiconductor Optical Amplifier (SOA). Numerical and experimental results are presented, which demonstrate that a nonlinear polarization switch can be employed to achieve all-Optical logic. We demonstrate an all-Optical header processing system, an all-Optical seed pulse generator for packet synchronization, and an all-Optical arbiter that can be employed for Optical buffering at a bit rate of 10 Gb/s. Experimental results indicate that Optical signal processing functions based on self-polarization rotation have a higher extinction ratio and a lower power operation compared with similar functions based on self-phase modulation.
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wavelength conversion using nonlinear polarization rotation in a single Semiconductor Optical Amplifier
IEEE Photonics Technology Letters, 2003Co-Authors: M T Hill, Giok Djan Khoe, Huug De Waardt, Eduward Tangdiongga, Nicola Calabretta, H.j.s. DorrenAbstract:We discuss an all-Optical wavelength converter based on nonlinear polarization rotation in a single Semiconductor Optical Amplifier. We show that inverted and noninverted wavelength conversion can be realized. We also demonstrate this wavelength-conversion concept can operate over a large wavelength range. Experiments show that error-free wavelength conversion can be obtained at a bit rate of 10 Gb/s.
