The Experts below are selected from a list of 93054 Experts worldwide ranked by ideXlab platform
Peter Magill - One of the best experts on this subject based on the ideXlab platform.
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high spectral efficiency 114 gb s transmission using polmux rz 8psk modulation format and single ended digital coherent detection technique
Journal of Lightwave Technology, 2009Co-Authors: Xiang Zhou, Dayou Qian, Jianjun Yu, Ting Wang, Guodong Zhang, Peter MagillAbstract:Employing spectrally efficient PolMux-RZ-8PSK modulation format and single-ended digital coherent detection technique, we demonstrate 8 times 114-Gb/s DWDM transmission over 640 km of SSMF on a 25-GHz grid with record spectral efficiency of 4.2 bit/s/Hz, utilizing no Optical Dispersion compensation or Raman amplification. We show that the distortion caused by the direct square-law detection of the signal component with single-ended photo detection can be effectively mitigated by a novel DSP algorithm.
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high spectral efficiency 114 gb s transmission using polmux rz 8psk modulation format and single ended digital coherent detection technique
OFC NFOEC 2008, 2009Co-Authors: Xiang Zhou, Dayou Qian, Jianjun Yu, Ting Wang, Guodong Zhang, Peter MagillAbstract:-Employing spectrally efficient PolMux.RZ.8PSK modulation format and single-ended digital coherent detection technique, we demonstrate 8 x 114-Gb/s DWDM transmission over 640 km of SSMF on a 25-GHz grid with record spectral efficiency of 4.2 bit/s/Hz, utilizing no Optical Dispersion compensation or Raman amplification. We show that the distortion caused by the direct square-law detection of the signal component with single-ended photo detection can be effectively mitigated by a novel DSP algorithm.
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8 114 gb s 25 ghz spaced polmux rz 8psk transmission over 640 km of ssmf employing digital coherent detection and edfa only amplification
Optical Fiber Communication Conference, 2008Co-Authors: Xiang Zhou, Ting Wang, Dayou Qian, Guodong Zhang, Peter MagillAbstract:Employing PolMux-RZ-8PSK modulation format and coherent detection, we demonstrate 8×114Gb/s DWDM transmission over 640km of SSMF on a 25GHz grid with record spectral efficiency of 4.2bit/s/Hz, utilizing no Optical Dispersion compensation or Raman amplification.
Idelfonso Tafur Monroy - One of the best experts on this subject based on the ideXlab platform.
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all vcsel based digital coherent detection link for multi gbit s wdm passive Optical networks
Optics Express, 2010Co-Authors: Roberto Rodes, Christian Neumeyr, Jesper Bevensee Jensen, Darko Zibar, Enno Roenneberg, Juergen Rosskopf, M Ortsiefer, Idelfonso Tafur MonroyAbstract:We report on experimental demonstration of a digital coherent detection link fully based on vertical cavity surface emitting lasers (VCSELs) for the transmitter as well as for the local oscillator light source at the receiver side. We demonstrate operation at 5 Gbps at a 1550 nm wavelength with record receiver sensitivity of −36 dBm after transmission over 40 km standard single mode fiber. Digital signal processing compensates for frequency offset between the transmitter and the local oscillator VCSELs, and for chromatic Dispersion. This system allows for uncooled VCSEL operation and fully passive fiber transmission with no use of Optical amplification or Optical Dispersion compensation. The proposed system demonstrates the potential of multi-gigabit coherent passive Optical networks with extended reach and increased capacity. Moreover, this is, to the best of our knowledge, the first demonstration of coherent Optical transmission systems using a low-cost VCSEL as the local oscillator as well as for the transmitter.
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all vcsel based digital coherent detection link for multi gbit s wdm passive Optical networks
Optics Express, 2010Co-Authors: Roberto Rodes, Christian Neumeyr, Jesper Bevensee Jensen, Darko Zibar, Enno Roenneberg, Juergen Rosskopf, M Ortsiefer, Idelfonso Tafur MonroyAbstract:We report on experimental demonstration of a digital coherent detection link fully based on vertical cavity surface emitting lasers (VCSELs) for the transmitter as well as for the local oscillator light source at the receiver side. We demonstrate operation at 5 Gbps at a 1550 nm wavelength with record receiver sensitivity of -36 dBm after transmission over 40 km standard single mode fiber. Digital signal processing compensates for frequency offset between the transmitter and the local oscillator VCSELs, and for chromatic Dispersion. This system allows for uncooled VCSEL operation and fully passive fiber transmission with no use of Optical amplification or Optical Dispersion compensation. The proposed system demonstrates the potential of multi-gigabit coherent passive Optical networks with extended reach and increased capacity. Moreover, this is, to the best of our knowledge, the first demonstration of coherent Optical transmission systems using a low-cost VCSEL as the local oscillator as well as for the transmitter.
Maurice Osullivan - One of the best experts on this subject based on the ideXlab platform.
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demonstration of an 8 dimensional modulation format with reduced inter channel nonlinearities in a polarization multiplexed coherent system
Optics Express, 2014Co-Authors: Andrew D Shiner, Kim B Roberts, M Reimer, A Borowiec, Oveis S Gharan, Jamie Gaudette, Priyanth Mehta, D Charlton, Maurice OsullivanAbstract:We demonstrate a polarization-managed 8-dimensional modulation format that is time domain coded to reduce inter-channel nonlinearity. Simulation results show a 2.3 dB improvement in maximum net system margin (NSM) relative to polarization multiplexed (PM)-BPSK, and a 1.0 dB improvement relative to time interleaved return-to-zero (RZ)-PM-BPSK, for five WDM channels propagating over 1600 km ELEAF with 90% inline Optical Dispersion compensation. In contrast to the other modulations considered, the new 8-dimensional format has negligible sensitivity to the polarization states of the neighboring WDM channels. High-density WDM (HD-WDM) measurements on a 5000 km Dispersion-managed link show a 1.0 dB improvement in net system margin relative to PM-BPSK.
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5120 km rz dpsk transmission over g 652 fiber at 10 gb s without Optical Dispersion compensation
IEEE Photonics Technology Letters, 2006Co-Authors: D Mcghan, Charles Laperle, G Mak, A Savchenko, Maurice OsullivanAbstract:We report the longest unregenerated reach achieved for a 10-Gb/s return-to-zero differential phase-shift keying system on standard Dispersion fiber (G.652) with no Optical Dispersion compensation. A total of 82.433 ns/nm of chromatic Dispersion compensation was achieved.
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electrical domain compensation of Optical Dispersion
Optical Fiber Communication Conference, 2005Co-Authors: John Mcnicol, Maurice Osullivan, Kim B Roberts, Adrien Comeau, D Mcghan, Leo StrawczynskiAbstract:Recent advances in the electrical equalization of Optical systems are presented in the context of standard methods. We report 10 Gb/s transmission over 60,000 ps/nm of Optical Dispersion from 3840 km of NDSF.
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electrical domain compensation of Optical Dispersion Optical fibre communication applications
Optical Fiber Communication Conference, 2005Co-Authors: John Mcnicol, Maurice Osullivan, Kim B Roberts, Adrien Comeau, D Mcghan, Leo StrawczynskiAbstract:Recent advances in the electrical equalization of Optical systems are presented in the context of standard methods. We report 10 Gb/s transmission over 60,000 ps/nm of Optical Dispersion from 3840 km of NDSF (non-Dispersion shifted fibre).
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5120 km rz dpsk transmission over g652 fiber at 10 gb s with no Optical Dispersion compensation
Optical Fiber Communication Conference, 2005Co-Authors: D Mcghan, Charles Laperle, A Savehenko, G Mak, Maurice OsullivanAbstract:We report the longest unregenerated reach achieved for a 10 Gb/s return-to-zero differential phase shift keying (RZ-DPSK) system on standard Dispersion fiber (G652) with no Optical Dispersion compensation.
William Shieh - One of the best experts on this subject based on the ideXlab platform.
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information spectral efficiency and launch power density limits due to fiber nonlinearity for coherent Optical ofdm systems
IEEE Photonics Journal, 2011Co-Authors: William Shieh, Xi ChenAbstract:We derive closed-form expressions for nonlinear transmission performance of dual-polarization closely spaced coherent Optical orthogonal frequency-division multiplexing (CO-OFDM) systems. We find that the fiber nonlinear noise exhibits a signature of the flicker noise or 1/f noisebeyond the corner frequency that is inversely proportional to the total participating bandwidth. We derive a noise enhancement factor that captures the interference effect of nonlinear noises among different spans. For a 10 t 100-km standard single-mode-fiber (SSMF) link with no Dispersion compensation at an optimal launch power density of - 15.9 dBm/GHz, the spectral efficiency of 9.90 b/s/Hz can be achieved for dual-polarization transmission, which is about 93% increase over single-polarization transmission. The closed-form expressions are also applicable to the closely spaced coherent single-carrier systems where the symbol rate is much larger than the Dispersion walk-off bandwidth, and the Optical Dispersion is uncompensated.
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equalization enhanced phase noise for coherent detection systems using electronic digital signal processing
Optics Express, 2008Co-Authors: William Shieh, Keang-po HoAbstract:In coherent Optical systems employing electronic digital signal processing, the fiber chromatic Dispersion can be gracefully compensated in electronic domain without resorting to Optical techniques. Unlike Optical Dispersion compensator, the electronic equalizer enhances the impairments from the laser phase noise. This equalization-enhanced phase noise (EEPN) imposes a tighter constraint on the receive laser phase noise for transmission systems with high symbol rate and large electronically-compensated chromatic Dispersion.
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Transmission experiment of multi-gigabit coherent Optical OFDM systems over 1000 km SSMF fibre
Electronics Letters, 2007Co-Authors: William Shieh, Xingwen Yi, Yan TangAbstract:The first proof-of-concept experimental demonstration of coherent Optical OFDM systems is reported. 128 OFDM subcarriers with a nominal data-rate of 8 Gbit/s are successfully processed and recovered after 1000 km transmission through SSMF fibre without Optical Dispersion compensation.
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Phase Estimation for Coherent Optical OFDM
IEEE Photonics Technology Letters, 2007Co-Authors: Xingwen Yi, William Shieh, Yan TangAbstract:Phase estimation is one of the enabling functionalities in coherent Optical orthogonal frequency-division-multiplexing (CO-OFDM) receivers. In this letter, we compare pilot-aided and data-aided phase estimation methods for a CO-OFDM transmission experiment at 8 Gb/s over 1000-km standard single-mode fiber without Optical Dispersion compensation. We also show that as few as five subcarriers are sufficient for pilot-aided phase estimation
Xiang Zhou - One of the best experts on this subject based on the ideXlab platform.
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high spectral efficiency 114 gb s transmission using polmux rz 8psk modulation format and single ended digital coherent detection technique
Journal of Lightwave Technology, 2009Co-Authors: Xiang Zhou, Dayou Qian, Jianjun Yu, Ting Wang, Guodong Zhang, Peter MagillAbstract:Employing spectrally efficient PolMux-RZ-8PSK modulation format and single-ended digital coherent detection technique, we demonstrate 8 times 114-Gb/s DWDM transmission over 640 km of SSMF on a 25-GHz grid with record spectral efficiency of 4.2 bit/s/Hz, utilizing no Optical Dispersion compensation or Raman amplification. We show that the distortion caused by the direct square-law detection of the signal component with single-ended photo detection can be effectively mitigated by a novel DSP algorithm.
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high spectral efficiency 114 gb s transmission using polmux rz 8psk modulation format and single ended digital coherent detection technique
OFC NFOEC 2008, 2009Co-Authors: Xiang Zhou, Dayou Qian, Jianjun Yu, Ting Wang, Guodong Zhang, Peter MagillAbstract:-Employing spectrally efficient PolMux.RZ.8PSK modulation format and single-ended digital coherent detection technique, we demonstrate 8 x 114-Gb/s DWDM transmission over 640 km of SSMF on a 25-GHz grid with record spectral efficiency of 4.2 bit/s/Hz, utilizing no Optical Dispersion compensation or Raman amplification. We show that the distortion caused by the direct square-law detection of the signal component with single-ended photo detection can be effectively mitigated by a novel DSP algorithm.
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8 114 gb s 25 ghz spaced polmux rz 8psk transmission over 640 km of ssmf employing digital coherent detection and edfa only amplification
Optical Fiber Communication Conference, 2008Co-Authors: Xiang Zhou, Ting Wang, Dayou Qian, Guodong Zhang, Peter MagillAbstract:Employing PolMux-RZ-8PSK modulation format and coherent detection, we demonstrate 8×114Gb/s DWDM transmission over 640km of SSMF on a 25GHz grid with record spectral efficiency of 4.2bit/s/Hz, utilizing no Optical Dispersion compensation or Raman amplification.