The Experts below are selected from a list of 1782 Experts worldwide ranked by ideXlab platform
Chang-soo Park - One of the best experts on this subject based on the ideXlab platform.
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Upstream Transmission of wdm ocdm pon in a loop back configuration with remotely supplied short optical pulses
IEEE\ OSA Journal of Optical Communications and Networking, 2013Co-Authors: Yong-kyu Choi, Masanori Hanawa, Xu Wang, Chang-soo ParkAbstract:We propose and experimentally demonstrate Upstream Transmission in a wavelength division multiplexing/optical code division multiplexing (WDM/OCDM) passive optical network (PON) without using any high-cost devices such as mode-locked lasers or LiNbO3 external modulators. To make optical network units (ONUs) simple, a loop-back Transmission of short optical pulses for OCDM in Upstream Transmission was investigated. The quality of the short optical pulses, remotely supplied via 23 km of single-mode fiber (SMF), was sufficient for 4-chip OCDM encoding at the ONUs.2WDM/4OCDM signals, generated by multiplexing four OCDM signals using the same wavelength as well as another signal with a different wavelength, showed error-free Transmission (bit error rate BER <; 10-9) over a 23 km SMF at 1.25 Gb/s.
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Upstream Transmission of WDM/OCDM-PON in a loop-back configuration with remotely supplied short optical pulses
IEEE OSA Journal of Optical Communications and Networking, 2013Co-Authors: Yong-kyu Choi, Masanori Hanawa, Xu Wang, Chang-soo ParkAbstract:We propose and experimentally demonstrate Upstream Transmission in a wavelength division multiplexing/optical code division multiplexing (WDM/OCDM) passive optical network (PON) without using any high-cost devices such as mode-locked lasers or LiNbO3 external modulators. To make optical network units (ONUs) simple, a loop-back Transmission of short optical pulses for OCDM in Upstream Transmission was investigated. The quality of the short optical pulses, remotely supplied via 23 km of single-mode fiber (SMF), was sufficient for 4-chip OCDM encoding at the ONUs.2WDM/4OCDM signals, generated by multiplexing four OCDM signals using the same wavelength as well as another signal with a different wavelength, showed error-free Transmission (bit error rate BER
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Upstream Transmission of WDM/OCDM-PON using RSOAs and spectrum-sliced source
2012 17th Opto-Electronics and Communications Conference, 2012Co-Authors: Yong-kyu Choi, Masanori Hanawa, Chang-soo ParkAbstract:A 1.25-Gbit/s 2WDM/2OCDM signal is generated from a 6-nm bandwidth SC signal supplied from OLT. The SC-signal is spectrum-sliced and OOK-modulated with RSOAs in ONUs. The Upstream Transmission shows BERs
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Colorless Upstream Transmission using remote self-injection locked reflective SOA for WDM-PON
OECC ACOFT 2008 - Joint Conference of the Opto-Electronics and Communications Conference and the Australian Conference on Optical Fibre Technology, 2008Co-Authors: Soo-yong Jung, Chang-soo ParkAbstract:Colorless Upstream Transmission is demonstrated using a self-injection locked RSOA for a range of 24 nm, achieving error free performance after Upstream Transmission at 1.25-Gb/s over 20-km SMF. The receiver sensitivities were of < -28.5 dBm.
S B Lee - One of the best experts on this subject based on the ideXlab platform.
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WDM-Based Passive Optical Network Upstream Transmission at 1.25 Gb/s Using Fabry–PÉrot Laser Diodes Injected With Spectrum-Sliced, Depolarized, Continuous-Wave Supercontinuum Source
IEEE Photonics Technology Letters, 2006Co-Authors: J.h. Lee, Y. G. Han, C. H. Kim, S B LeeAbstract:We experimentally demonstrate the use of low-cost Fabry-Perot laser diodes (FP-LDs) injected with spectrum-sliced beams from our proposed, depolarized, high-power, continuous-wave (CW) supercontinuum (SC) for Upstream Transmission in a wavelength-division-multiplexed (WDM) passive optical network. A ~500-mW CW SC with a ~130-nm bandwidth is obtained from a narrowband, amplified spontaneous emission (ASE) seed of a pumped erbium fiber by nonlinear effects such as modulation instability and stimulated Raman scattering in a highly nonlinear optical fiber. Through measurements of relative intensity noise at various wavelengths, it is shown that our spectrum-sliced SC offers the same performance as the spectrum-sliced erbium ASE. Error-free 25-km Upstream Transmission for six WDM signals generated from the CW SC-injected FP-LDs, is readily achieved at 1.25 Gb/s
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WDM-Based Passive Optical Network Upstream Transmission at 1.25 Gb/s Using Fabry–PÉrot Laser Diodes Injected With Spectrum-Sliced, Depolarized, Continuous-Wave Supercontinuum Source
IEEE Photonics Technology Letters, 2006Co-Authors: J.h. Lee, Y. G. Han, C. H. Kim, S B LeeAbstract:We experimentally demonstrate the use of low-cost Fabry-Perot laser diodes (FP-LDs) injected with spectrum-sliced beams from our proposed, depolarized, high-power, continuous-wave (CW) supercontinuum (SC) for Upstream Transmission in a wavelength-division-multiplexed (WDM) passive optical network. A ~500-mW CW SC with a ~130-nm bandwidth is obtained from a narrowband, amplified spontaneous emission (ASE) seed of a pumped erbium fiber by nonlinear effects such as modulation instability and stimulated Raman scattering in a highly nonlinear optical fiber. Through measurements of relative intensity noise at various wavelengths, it is shown that our spectrum-sliced SC offers the same performance as the spectrum-sliced erbium ASE. Error-free 25-km Upstream Transmission for six WDM signals generated from the CW SC-injected FP-LDs, is readily achieved at 1.25 Gb/s
Yong-kyu Choi - One of the best experts on this subject based on the ideXlab platform.
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Upstream Transmission of wdm ocdm pon in a loop back configuration with remotely supplied short optical pulses
IEEE\ OSA Journal of Optical Communications and Networking, 2013Co-Authors: Yong-kyu Choi, Masanori Hanawa, Xu Wang, Chang-soo ParkAbstract:We propose and experimentally demonstrate Upstream Transmission in a wavelength division multiplexing/optical code division multiplexing (WDM/OCDM) passive optical network (PON) without using any high-cost devices such as mode-locked lasers or LiNbO3 external modulators. To make optical network units (ONUs) simple, a loop-back Transmission of short optical pulses for OCDM in Upstream Transmission was investigated. The quality of the short optical pulses, remotely supplied via 23 km of single-mode fiber (SMF), was sufficient for 4-chip OCDM encoding at the ONUs.2WDM/4OCDM signals, generated by multiplexing four OCDM signals using the same wavelength as well as another signal with a different wavelength, showed error-free Transmission (bit error rate BER <; 10-9) over a 23 km SMF at 1.25 Gb/s.
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Upstream Transmission of WDM/OCDM-PON in a loop-back configuration with remotely supplied short optical pulses
IEEE OSA Journal of Optical Communications and Networking, 2013Co-Authors: Yong-kyu Choi, Masanori Hanawa, Xu Wang, Chang-soo ParkAbstract:We propose and experimentally demonstrate Upstream Transmission in a wavelength division multiplexing/optical code division multiplexing (WDM/OCDM) passive optical network (PON) without using any high-cost devices such as mode-locked lasers or LiNbO3 external modulators. To make optical network units (ONUs) simple, a loop-back Transmission of short optical pulses for OCDM in Upstream Transmission was investigated. The quality of the short optical pulses, remotely supplied via 23 km of single-mode fiber (SMF), was sufficient for 4-chip OCDM encoding at the ONUs.2WDM/4OCDM signals, generated by multiplexing four OCDM signals using the same wavelength as well as another signal with a different wavelength, showed error-free Transmission (bit error rate BER
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Upstream Transmission of WDM/OCDM-PON using RSOAs and spectrum-sliced source
2012 17th Opto-Electronics and Communications Conference, 2012Co-Authors: Yong-kyu Choi, Masanori Hanawa, Chang-soo ParkAbstract:A 1.25-Gbit/s 2WDM/2OCDM signal is generated from a 6-nm bandwidth SC signal supplied from OLT. The SC-signal is spectrum-sliced and OOK-modulated with RSOAs in ONUs. The Upstream Transmission shows BERs
J.h. Lee - One of the best experts on this subject based on the ideXlab platform.
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WDM-Based Passive Optical Network Upstream Transmission at 1.25 Gb/s Using Fabry–PÉrot Laser Diodes Injected With Spectrum-Sliced, Depolarized, Continuous-Wave Supercontinuum Source
IEEE Photonics Technology Letters, 2006Co-Authors: J.h. Lee, Y. G. Han, C. H. Kim, S B LeeAbstract:We experimentally demonstrate the use of low-cost Fabry-Perot laser diodes (FP-LDs) injected with spectrum-sliced beams from our proposed, depolarized, high-power, continuous-wave (CW) supercontinuum (SC) for Upstream Transmission in a wavelength-division-multiplexed (WDM) passive optical network. A ~500-mW CW SC with a ~130-nm bandwidth is obtained from a narrowband, amplified spontaneous emission (ASE) seed of a pumped erbium fiber by nonlinear effects such as modulation instability and stimulated Raman scattering in a highly nonlinear optical fiber. Through measurements of relative intensity noise at various wavelengths, it is shown that our spectrum-sliced SC offers the same performance as the spectrum-sliced erbium ASE. Error-free 25-km Upstream Transmission for six WDM signals generated from the CW SC-injected FP-LDs, is readily achieved at 1.25 Gb/s
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WDM-Based Passive Optical Network Upstream Transmission at 1.25 Gb/s Using Fabry–PÉrot Laser Diodes Injected With Spectrum-Sliced, Depolarized, Continuous-Wave Supercontinuum Source
IEEE Photonics Technology Letters, 2006Co-Authors: J.h. Lee, Y. G. Han, C. H. Kim, S B LeeAbstract:We experimentally demonstrate the use of low-cost Fabry-Perot laser diodes (FP-LDs) injected with spectrum-sliced beams from our proposed, depolarized, high-power, continuous-wave (CW) supercontinuum (SC) for Upstream Transmission in a wavelength-division-multiplexed (WDM) passive optical network. A ~500-mW CW SC with a ~130-nm bandwidth is obtained from a narrowband, amplified spontaneous emission (ASE) seed of a pumped erbium fiber by nonlinear effects such as modulation instability and stimulated Raman scattering in a highly nonlinear optical fiber. Through measurements of relative intensity noise at various wavelengths, it is shown that our spectrum-sliced SC offers the same performance as the spectrum-sliced erbium ASE. Error-free 25-km Upstream Transmission for six WDM signals generated from the CW SC-injected FP-LDs, is readily achieved at 1.25 Gb/s
Dezhi Zhang - One of the best experts on this subject based on the ideXlab platform.
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demonstration of a symmetric 40 gbit s twdm pon over 40 km passive reach using 10 g burst mode dml and edc for Upstream Transmission invited
IEEE\ OSA Journal of Optical Communications and Networking, 2015Co-Authors: Guohua Kuang, Dezhi ZhangAbstract:To meet the 2015 timeline, a hybrid time- and wavelength-division multiplexed passive optical network (TWDM-PON) has been selected as the pragmatic path toward the second stage of the next-generation PON (NG-PON2). High-end business users and mobile front-haul/back-haul for next-generation wireless systems that highly rely on symmetrical data rate services are believed to be the main deployment drivers for NG-PON2. In this paper, for the first time to the best of our knowledge, we demonstrate a symmetric 40 Gbit/s TWDM-PON system that fully complies with the up-to-date full service access network/International Telecommunication Union NG-PON2 migration path. There are two distinguishing features from previously reported systems. One is that four symmetric 10 Gbit/s wavelength pairs are supported at the final NG-PON2 wavelength plan [i.e., (C-/L+) band] over 40 km passive reach, and the other is that a burst-mode tunable directly modulated laser and burst-mode electronic dispersion compensation are demonstrated for 10 G Upstream Transmission instead of tunable external modulated lasers. The selection of the final NG-PON2 wavelength plan is first briefly reviewed. Then the key enabling technologies for our demonstrated TWDM-PON are analyzed and their technological choices, availability, and performances are further investigated. After illustrating the demonstrated system architecture and configuration, measurements and analysis are presented to prove the system feasibility and technical availability. In this demonstration, N1 and N2 optical distribution network (ODN) classes can be totally supported without amplifiers, whereas preamplification is needed to achieve El and E2 ODN classes. Both downstream and Upstream optical parameters are summarized.
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Demonstration of a symmetric 40 Gbit/s TWDM-PON over 40 km passive reach using 10 G burst-mode DML and EDC for Upstream Transmission [invited]
IEEE OSA Journal of Optical Communications and Networking, 2015Co-Authors: Guohua Kuang, Dezhi ZhangAbstract:To meet the 2015 timeline, a hybrid time- and wavelength-division multiplexed passive optical network (TWDM-PON) has been selected as the pragmatic path toward the second stage of the next-generation PON (NG-PON2). High-end business users and mobile front-haul/back-haul for next-generation wireless systems that highly rely on symmetrical data rate services are believed to be the main deployment drivers for NG-PON2. In this paper, for the first time to the best of our knowledge, we demonstrate a symmetric 40 Gbit/s TWDM-PON system that fully complies with the up-to-date full service access network/International Telecommunication Union NG-PON2 migration path. There are two distinguishing features from previously reported systems. One is that four symmetric 10 Gbit/s wavelength pairs are supported at the final NG-PON2 wavelength plan [i.e., (C-/L+) band] over 40 km passive reach, and the other is that a burst-mode tunable directly modulated laser and burst-mode electronic dispersion compensation are demonstrated for 10 G Upstream Transmission instead of tunable external modulated lasers. The selection of the final NG-PON2 wavelength plan is first briefly reviewed. Then the key enabling technologies for our demonstrated TWDM-PON are analyzed and their technological choices, availability, and performances are further investigated. After illustrating the demonstrated system architecture and configuration, measurements and analysis are presented to prove the system feasibility and technical availability. In this demonstration, N1 and N2 optical distribution network (ODN) classes can be totally supported without amplifiers, whereas preamplification is needed to achieve El and E2 ODN classes. Both downstream and Upstream optical parameters are summarized.
