The Experts below are selected from a list of 19377 Experts worldwide ranked by ideXlab platform
Y.-c. Chung - One of the best experts on this subject based on the ideXlab platform.
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Bidirectional WDM Passive Optical Network for simultaneous transmission of data and digital broadcast video service
Journal of Lightwave Technology, 2003Co-Authors: E. S. Son, Jongdeog Kim, K. H. Han, Y.-c. ChungAbstract:We have demonstrated an easily upgradable bidirectional Passive Optical Network for the simultaneous transmission of wavelength-division-multiplexing channels and digital broadcast video signals. The proposed Network could transmit 15 2.5-Gb/s downstream channels, 15 155-Mb/s upstream channels, and one broadcast signal consisting of more than 70 digital video channels.
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Spectrum-sliced bidirectional Passive Optical Network for simultaneous transmission of WDM and digital broadcast video signals
Electronics Letters, 2001Co-Authors: D. K. Jung, K. H. Han, Hyunsoo Kim, Y.-c. ChungAbstract:A bidirectional WDM Passive Optical Network based on the spectrum-slicing technique for both broadband switched services and digital broadcast video services is demonstrated. This Network is capable of providing a 155 Mbit's baseband signal and 30 digital video signals to each subscriber. The upstream channels also operate at 155 Mbit/s
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Wavelength-tracking technique for spectrum-sliced WDM Passive Optical Network
IEEE Photonics Technology Letters, 2000Co-Authors: D. K. Jung, S.k. Shin, Y.-c. ChungAbstract:We propose and demonstrate a simple wavelength-tracking technique for the spectrum-sliced wavelength-division-multiplexed Passive Optical Network. The proposed technique could maintain the Optical powers of the spectrum-sliced channels within 0.2 dB when the operating temperature of the remote node was varied from 15/spl deg/C to 55/spl deg/C, as rapidly as 0.5/spl deg/C/min.
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Bi-directional Passive Optical Network for CDMA personal communication service
Electronics Letters, 1999Co-Authors: Y.-c. ChungAbstract:A bi-directional Passive Optical Network for CDMA personal communication service is proposed and demonstrated. The relaxed dynamic range requirements of CDMA signals allows the use of a double-star architecture. This Network could be implemented cost-effectively by using one 1.3 /spl mu/m Fabry-Perot laser for the downlink and 1.3 /spl mu/m LEDs for the uplink.
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Bi-directional Passive Optical Network for CDMA personal communication service
OFC IOOC . Technical Digest. Optical Fiber Communication Conference 1999 and the International Conference on Integrated Optics and Optical Fiber Commu, 1999Co-Authors: Y.-c. ChungAbstract:We propose and demonstrate a bidirectional Passive Optical Network for CDMA personal communication service. This Network could be implemented cost effectively by using Fabry-Perot lasers for the downlink and LEDs for the uplink.
Chun-kit Chan - One of the best experts on this subject based on the ideXlab platform.
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Optical Overlay of Multicast Stream on a Survivable WDM Passive Optical Network
IEEE Photonics Technology Letters, 2013Co-Authors: Chun-kit ChanAbstract:We propose a novel scheme to perform an Optical multicast overlay on a survivable wavelength division multiplexed Passive Optical Network. By flexibly controlling a sinusoidal clock signal and an Optical switch at the Optical line terminal, Optical sub-carriers, which enable not only protection for distribution and feeder fibers, but also multicast data delivery, are generated. 10-Gb/s transmissions under both normal working and protection modes are experimentally demonstrated.
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A WDM Passive Optical Network With Polarization-Assisted Multicast Overlay Control
IEEE Photonics Technology Letters, 2009Co-Authors: Chun-kit ChanAbstract:We propose a novel wavelength-division-multiplexed Passive Optical Network which supports simultaneous delivery of 10-Gb/s point-to-point downstream and upstream data as well as 10-Gb/s downstream multicast data. The multicast overlay control is achieved by a polarization-assisted scheme at the Optical line terminal (OLT). A separate lightpath is provided for the downstream multicast differential phase-shift keying (DPSK) data without additional light sources. The upstream amplitude-shift keying signal at the Optical Network unit is superimposed onto the received multicast DPSK signal before being transmitted back to the OLT.
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data remodulation on downstream ofsk signal for upstream transmission in wdm Passive Optical Network
Electronics Letters, 2003Co-Authors: Ning Deng, Chun-kit Chan, Liankuan Chen, Fei TongAbstract:Employment of Optical frequency shift keying (OFSK) as the downstream modulation format in a WDM Passive Optical Network is proposed. The upstream OOK transmitter at the ONU can be realised by remodulating the constant-intensity downstream OFSK signal power with the upstream data. Transmission and remodulation of 2.5 Gbit/s downstream and upstream signals were successfully demonstrated.
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Data remodulation on downstream OFSK signal for upstream transmission in WDM Passive Optical Network
Electronics Letters, 2003Co-Authors: Ning Deng, Chun-kit Chan, Fei TongAbstract:Employment of Optical frequency shift keying (OFSK) as the downstream modulation format in a WDM Passive Optical Network is proposed. The upstream OOK (on-off keying) transmitter at the ONU (Optical Network unit) can be realised by remodulating the constant-intensity downstream OFSK signal power with the upstream data. Transmission and remodulation of 2.5 Gbit/s downstream and upstream signals were successfully demonstrated.
R.s. Tucker - One of the best experts on this subject based on the ideXlab platform.
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selective broadcasting of digital video signals over a wdm Passive Optical Network
IEEE Photonics Technology Letters, 2005Co-Authors: M. Khanal, Chang-joon Chae, R.s. TuckerAbstract:Using a common Optical modulator for baseband modulation and subcarrier multiplexing, and by controlling the individual transmitter laser bias at the central office, selective broadcasting of a 155-Mb/s digital video signal over a WDM Passive Optical Network is demonstrated with a 1-Gb/s downstream data signal being simultaneously transmitted. A power penalty <0.5dB is observed for both signals at 10/sup -9/ bit-error rate.
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Selective broadcasting of digital video signals over a WDM Passive Optical Network
IEEE Photonics Technology Letters, 2005Co-Authors: M. Khanal, Chang-joon Chae, R.s. TuckerAbstract:Using a common Optical modulator for baseband modulation and subcarrier multiplexing, and by controlling the individual transmitter laser bias at the central office, selective broadcasting of a 155-Mb/s digital video signal over a WDM Passive Optical Network is demonstrated with a 1-Gb/s downstream data signal being simultaneously transmitted. A power penalty
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Optical csma cd media access scheme for ethernet over Passive Optical Network
IEEE Photonics Technology Letters, 2002Co-Authors: Chang-joon Chae, Elaine Wong, R.s. TuckerAbstract:In this letter, we propose and demonstrate a novel implementation of Optical carrier-sense multiple access with collision detection to efficiently transport Ethernet frames over a star coupler (SC) based Passive Optical Network. We introduce a redirection mechanism at the SC to achieve high channel efficiency.
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Optical CSMA/CD media access scheme for Ethernet over Passive Optical Network
IEEE Photonics Technology Letters, 2002Co-Authors: Chang-joon Chae, E. Wong, R.s. TuckerAbstract:In this letter, we propose and demonstrate a novel implementation of Optical carrier-sense multiple access with collision detection to efficiently transport Ethernet frames over a star coupler (SC) based Passive Optical Network. We introduce a redirection mechanism at the SC to achieve high channel efficiency.
D. K. Jung - One of the best experts on this subject based on the ideXlab platform.
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Spectrum-sliced bidirectional Passive Optical Network for simultaneous transmission of WDM and digital broadcast video signals
Electronics Letters, 2001Co-Authors: D. K. Jung, K. H. Han, Hyunsoo Kim, Y.-c. ChungAbstract:A bidirectional WDM Passive Optical Network based on the spectrum-slicing technique for both broadband switched services and digital broadcast video services is demonstrated. This Network is capable of providing a 155 Mbit's baseband signal and 30 digital video signals to each subscriber. The upstream channels also operate at 155 Mbit/s
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Wavelength-tracking technique for spectrum-sliced WDM Passive Optical Network
IEEE Photonics Technology Letters, 2000Co-Authors: D. K. Jung, S.k. Shin, Y.-c. ChungAbstract:We propose and demonstrate a simple wavelength-tracking technique for the spectrum-sliced wavelength-division-multiplexed Passive Optical Network. The proposed technique could maintain the Optical powers of the spectrum-sliced channels within 0.2 dB when the operating temperature of the remote node was varied from 15/spl deg/C to 55/spl deg/C, as rapidly as 0.5/spl deg/C/min.
Weisheng Hu - One of the best experts on this subject based on the ideXlab platform.
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Video-Service-Overlaid Wavelength-Division-Multiplexed Passive Optical Network
IEEE Photonics Technology Letters, 2009Co-Authors: Shilin Xiao, Rongyu Li, Weisheng HuAbstract:We propose and demonstrate a novel wavelength-division-multiplexed Passive Optical Network (WDM-PON) with multicast overlay. By superimposing an inverse return-to-zero multicast signal onto a nonreturn-to-zero point-to-point signal, simultaneous transmission is realized for both services. At the Optical Network unit (ONU), only one photodiode is required to detect both signals. No complex receiver is demanded. Multicast control is realized through a switch for each wavelength at the Optical line terminal. We successfully demonstrate the proposed WDM-PON.
