The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform
Kamal Alameh - One of the best experts on this subject based on the ideXlab platform.
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Reconfigurable Optical power splitter/combiner based on Opto-VLSI processing
Optics express, 2011Co-Authors: Haithem A. B. Mustafa, Feng Xiao, Kamal AlamehAbstract:A novel 1×4 reconfigurable Optical splitter/combiner structure based on Opto-VLSI processor and 4-f imaging system with high resolution is proposed and experimentally demonstrated. By uploading optimized multicasting phase holograms onto the software-driven Opto-VLSI processor, an Input Optical Signal is dynamically split into different output fiber ports with user-defined splitting ratios. Also, multiple Input Optical Signals are dynamically combined with arbitrary user-defined weights.
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A 1×4 adaptive Optical splitter based on Opto-VLSI processor
8th International Conference on High-capacity Optical Networks and Emerging Technologies, 2011Co-Authors: Haithem A. B. Mustafa, Feng Xiao, Kamal AlamehAbstract:We propose and experimentally demonstrate a novel high resolution 1×4 adaptive Optical power splitter based on the use of an Opto-VLSI processor and a 4-f imaging system with an optimized Optical beam waist profile. By uploading optimized multicasting phase holograms onto the software-driven Opto-VLSI processor, an Input Optical Signal is dynamically split into different output fiber ports with user-defined splitting ratios. Experimental results showing dynamic Optical splitting over a wavelength range exceeding 50 nm are presented.
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A 1×2 adaptive Optical splitter based on Opto-VLSI processor
7th International Symposium on High-capacity Optical Networks and Enabling Technologies, 2010Co-Authors: Haithem A. B. Mustafa, Feng Xiao, Kamal AlamehAbstract:A 1×2 adaptive Optical splitter structure is proposed and experimentally demonstrated. The 1×2 adaptive Optical splitter structure is based on Opto-VLSI in conjunction with 4-f imaging system. An Opto-VLSI processor is software driven and capable of splitting an Optical beam into different directions when a multicasting phase hologram is uploaded. An Input Optical Signal launched into an Input Optical fiber port is split and coupled into two output Optical fiber ports with arbitrary splitting ratios over a wavelength range exceeding 50 nm.
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Adaptive Optical Splitter Employing an Opto-VLSI Processor and a 4- $f$ Imaging System
Journal of Lightwave Technology, 2010Co-Authors: Haithem A. B. Mustafa, Feng Xiao, Kamal AlamehAbstract:A novel adaptive Optical splitter structure employing an Opto-VLSI processor and 4-f imaging system is proposed and experimentally demonstrated. By driving the Opto-VLSI processor with computer generated multicasting phase holograms, an Input Optical Signal launched into an Input Optical fiber port can be split and coupled into many output Optical fiber ports with arbitrary splitting ratios. A proof-of-principle 1 × 2 adaptive Optical splitter structure driven by optimized multicasting phase holograms uploaded onto the Opto-VLSI processor is developed, demonstrating an arbitrary splitting ratio over a wavelength range exceeding 50 nm.
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An opto-VLSI reconfigurable broad-band Optical splitter
IEEE Photonics Technology Letters, 2005Co-Authors: Rong Zheng, Kamal Alameh, Zhenglin Wang, William A. CrosslandAbstract:A reconfigurable broad-band Optical splitter is presented, which uses the multicasting capability of opto-very-large-scale-integrated (Opto-VLSI) technology to adaptively split an Optical Signal to N fiber ports. We demonstrate the proof-of-principle of a three-port structure that uses a reconfigurable Opto-VLSI processor to adaptively multicast an Input Optical Signal with dynamic attenuation range of more than 25 dB over 55-nm bandwidth.
Ryo Takahashi - One of the best experts on this subject based on the ideXlab platform.
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All-Optical wavelength-routing switch with monolithically integrated filter-free tunable wavelength converters and an AWG.
Optics express, 2010Co-Authors: Toru Segawa, Takaaki Kakitsuka, Tomonari Sato, Yoshihiro Kawaguchi, Yasuo Shibata, Shinji Matsuo, Yasuhiro Kondo, Ryo TakahashiAbstract:We present a compact 4x8 wavelength-routing switch that monolithically integrates fast tunable wavelength converters (TWCs) and an arrayed-waveguide grating (AWG) for Optical packet switching. The TWC consists of a double-ring-resonator-coupled tunable laser which allows rapid and stable switching, and an Optical gate based on a parallel amplifier structure which prevents an Input Optical Signal from being routed through the AWG (filter-free operation). A deep-ridge waveguide technology, employed for the AWG and ring resonators, facilitates the fabrication of the switch and makes the device compact. The filter-free TWCs achieve low crosstalk of the Input Optical Signal of less than -22 dB. The wavelength routing operation of a non-return-to-zero (NRZ) Signal at 10 Gbit/s is achieved with a switching time of less than 5 ns.
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Dynamic operation of a monolithic wavelength-routing switch using double-ring-resonator-coupled tunable laser diodes
2009 International Conference on Photonics in Switching, 2009Co-Authors: Toru Segawa, Takaaki Kakitsuka, Tomonari Sato, Yoshihiro Kawaguchi, Yasuo Shibata, Yasuhiro Kondo, Matsuo Shinji, Ryo TakahashiAbstract:We demonstrate an all-Optical wavelength-routing switch monolithically integrated with four wavelength converters and an 8×8 arrayed-waveguide-grating (AWG) filter. In the switch, double-ring-resonator-coupled tunable laser diodes allow rapid and stable switching between output ports (~5 ns) and Optical gates based on a parallel amplifier structure prevent the Input Optical Signal from being routed through the AWG (filter-free operation).
John D. Harvey - One of the best experts on this subject based on the ideXlab platform.
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Strong Signal suppression in single-pump Optical parametric amplifiers
Optics letters, 2008Co-Authors: J. C. C. Wang, Stuart G. Murdoch, Rainer Leonhardt, John D. HarveyAbstract:We show that the combined action of parametric gain and Raman scattering can lead to the complete suppression of an Input Optical Signal in a single-pump parametric amplifier. This suppression is due to an interference between the two parametric gain modes. The interference occurs only at a set of discrete combinations of pump power, phase mismatch, and frequency detuning. Experimentally we are able to demonstrate over 95% (13 dB) suppression of an Input Signal in an amplifier with a peak parametric gain of only 6 dB.
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Strong Signal suppression due to the combined effect of Raman and parametric gain in a fiber parametric amplifier.
2008 Conference on Lasers and Electro-Optics, 2008Co-Authors: J. C. C. Wang, Stuart G. Murdoch, Rainer Leonhardt, John D. HarveyAbstract:The combined action of parametric gain and Raman scattering can lead to the complete suppression of an Input Optical Signal. Experimentally we are able to demonstrate over 95% (13 dB) suppression.
Haithem A. B. Mustafa - One of the best experts on this subject based on the ideXlab platform.
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Reconfigurable Optical power splitter/combiner based on Opto-VLSI processing
Optics express, 2011Co-Authors: Haithem A. B. Mustafa, Feng Xiao, Kamal AlamehAbstract:A novel 1×4 reconfigurable Optical splitter/combiner structure based on Opto-VLSI processor and 4-f imaging system with high resolution is proposed and experimentally demonstrated. By uploading optimized multicasting phase holograms onto the software-driven Opto-VLSI processor, an Input Optical Signal is dynamically split into different output fiber ports with user-defined splitting ratios. Also, multiple Input Optical Signals are dynamically combined with arbitrary user-defined weights.
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A 1×4 adaptive Optical splitter based on Opto-VLSI processor
8th International Conference on High-capacity Optical Networks and Emerging Technologies, 2011Co-Authors: Haithem A. B. Mustafa, Feng Xiao, Kamal AlamehAbstract:We propose and experimentally demonstrate a novel high resolution 1×4 adaptive Optical power splitter based on the use of an Opto-VLSI processor and a 4-f imaging system with an optimized Optical beam waist profile. By uploading optimized multicasting phase holograms onto the software-driven Opto-VLSI processor, an Input Optical Signal is dynamically split into different output fiber ports with user-defined splitting ratios. Experimental results showing dynamic Optical splitting over a wavelength range exceeding 50 nm are presented.
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A 1×2 adaptive Optical splitter based on Opto-VLSI processor
7th International Symposium on High-capacity Optical Networks and Enabling Technologies, 2010Co-Authors: Haithem A. B. Mustafa, Feng Xiao, Kamal AlamehAbstract:A 1×2 adaptive Optical splitter structure is proposed and experimentally demonstrated. The 1×2 adaptive Optical splitter structure is based on Opto-VLSI in conjunction with 4-f imaging system. An Opto-VLSI processor is software driven and capable of splitting an Optical beam into different directions when a multicasting phase hologram is uploaded. An Input Optical Signal launched into an Input Optical fiber port is split and coupled into two output Optical fiber ports with arbitrary splitting ratios over a wavelength range exceeding 50 nm.
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Adaptive Optical Splitter Employing an Opto-VLSI Processor and a 4- $f$ Imaging System
Journal of Lightwave Technology, 2010Co-Authors: Haithem A. B. Mustafa, Feng Xiao, Kamal AlamehAbstract:A novel adaptive Optical splitter structure employing an Opto-VLSI processor and 4-f imaging system is proposed and experimentally demonstrated. By driving the Opto-VLSI processor with computer generated multicasting phase holograms, an Input Optical Signal launched into an Input Optical fiber port can be split and coupled into many output Optical fiber ports with arbitrary splitting ratios. A proof-of-principle 1 × 2 adaptive Optical splitter structure driven by optimized multicasting phase holograms uploaded onto the Opto-VLSI processor is developed, demonstrating an arbitrary splitting ratio over a wavelength range exceeding 50 nm.
Toru Segawa - One of the best experts on this subject based on the ideXlab platform.
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All-Optical wavelength-routing switch with monolithically integrated filter-free tunable wavelength converters and an AWG.
Optics express, 2010Co-Authors: Toru Segawa, Takaaki Kakitsuka, Tomonari Sato, Yoshihiro Kawaguchi, Yasuo Shibata, Shinji Matsuo, Yasuhiro Kondo, Ryo TakahashiAbstract:We present a compact 4x8 wavelength-routing switch that monolithically integrates fast tunable wavelength converters (TWCs) and an arrayed-waveguide grating (AWG) for Optical packet switching. The TWC consists of a double-ring-resonator-coupled tunable laser which allows rapid and stable switching, and an Optical gate based on a parallel amplifier structure which prevents an Input Optical Signal from being routed through the AWG (filter-free operation). A deep-ridge waveguide technology, employed for the AWG and ring resonators, facilitates the fabrication of the switch and makes the device compact. The filter-free TWCs achieve low crosstalk of the Input Optical Signal of less than -22 dB. The wavelength routing operation of a non-return-to-zero (NRZ) Signal at 10 Gbit/s is achieved with a switching time of less than 5 ns.
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Dynamic operation of a monolithic wavelength-routing switch using double-ring-resonator-coupled tunable laser diodes
2009 International Conference on Photonics in Switching, 2009Co-Authors: Toru Segawa, Takaaki Kakitsuka, Tomonari Sato, Yoshihiro Kawaguchi, Yasuo Shibata, Yasuhiro Kondo, Matsuo Shinji, Ryo TakahashiAbstract:We demonstrate an all-Optical wavelength-routing switch monolithically integrated with four wavelength converters and an 8×8 arrayed-waveguide-grating (AWG) filter. In the switch, double-ring-resonator-coupled tunable laser diodes allow rapid and stable switching between output ports (~5 ns) and Optical gates based on a parallel amplifier structure prevent the Input Optical Signal from being routed through the AWG (filter-free operation).