The Experts below are selected from a list of 29595 Experts worldwide ranked by ideXlab platform
Alan E Willner - One of the best experts on this subject based on the ideXlab platform.
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tunable optical Wavelength Conversion of ofdm signal using a periodically poled lithium niobate waveguide
Optics Express, 2009Co-Authors: Weiren Peng, Jian Wang, V R Arbab, Alan E WillnerAbstract:We experimentally demonstrate tunable optical Wavelength Conversion of a 10-Gb/s radio frequency (RF)-tone assisted orthogonal-frequency-division-multiplexing (OFDM) signal with approximately-5 dB (approximately 30%) efficiency over approximately 30 nm bandwidth using a periodically-poled lithium-niobate (PPLN) waveguide. A penalty of < 3 dB is obtained after Wavelength Conversion. Quadrature amplitude modulation (QAM) size and subcarrier number are varied to further evaluate the performance of the Wavelength converter.
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tunable optical Wavelength Conversion of ofdm signal using a periodically poled lithium niobate waveguide
Optics Express, 2009Co-Authors: Xiaoxia Wu, Jian Wang, Weiren Peng, V R Arbab, Alan E WillnerAbstract:We experimentally demonstrate tunable optical Wavelength Conversion of a 10-Gb/s radio frequency (RF)-tone assisted orthogonal-frequency-division-multiplexing (OFDM) signal with ~-5 dB (~30%) efficiency over ~30 nm bandwidth using a periodically-poled lithium-niobate (PPLN) waveguide. A penalty of < 3 dB is obtained after Wavelength Conversion. Quadrature amplitude modulation (QAM) size and subcarrier number are varied to further evaluate the performance of the Wavelength converter.
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tunable all optical Wavelength Conversion and Wavelength multicasting using orthogonally polarized fiber fwm
Journal of Lightwave Technology, 2005Co-Authors: Y Wang, T Luo, Lianshan Yan, Zhongqi Pan, Alan E WillnerAbstract:All-optical Wavelength Conversion and multicasting with input and output Wavelength tunability is a desired component for reconfigurable Wavelength-division-multiplexed (WDM) networks for improving the efficiency and performance. In this paper, we propose a novel tunable all-optical Wavelength-Conversion-and-Wavelength-multicasting schemes by using orthogonally polarized nondegenerate four-wave mixing (FWM) in highly nonlinear fiber. The input signal is amplified and serves as one of the two pumps. Wide tunability is obtained by placing a dummy pump and dummy signals at appropriate Wavelengths with respect to the input Wavelength and desired output Wavelengths. For a 10-Gb/s NRZ system, 1:3 multicasting is demonstrated with a less than 0.6-dB power penalty, over a 25-nm tuning range for both input and output signals.
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Wavelength Conversion of subcarrier channels using difference frequency generation in a ppln waveguide
IEEE Photonics Technology Letters, 2002Co-Authors: M C Cardakli, Alan E Willner, A B Sahin, O H Adamczyk, K R Parameswaran, M M FejerAbstract:The authors demonstrate and characterize a transparent all-optical Wavelength Conversion process for subcarrier-multiplexed channels. Their memoryless /spl chi//sup (2)/:/spl chi//sup (2)/ difference-frequency-generation process uses 1550-nm pumping in a periodically poled lithium niobate waveguide. They achieve penalty-free all-optical Wavelength Conversion of two 55-Mb/s subcarrier channels. The process shows a >30-dB linear dynamic range for crosstalk-free transparent operation.
Jian Wang - One of the best experts on this subject based on the ideXlab platform.
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all optical Wavelength Conversion and signal regeneration of pam 4 signal using a silicon waveguide
Optics Express, 2016Co-Authors: Yun Long, Andong Wang, Linjie Zhou, Jian WangAbstract:We experimentally demonstrate on-chip all-optical Wavelength Conversion of 10-Gbit/s (9.35-Gbit/s net rate) 4-level pulse amplitude modulation (PAM-4) signal by exploiting degenerate four-wave mixing (FWM) in a silicon waveguide. The measured optical signal-to-noise ratio (OSNR) penalty of Wavelength Conversion is ~1 dB at a bit-error rate (BER) of 2 × 10-3. Moreover, the use of Wavelength Conversion for PAM-4 signal regeneration is also demonstrated in the experiment.
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all optical multi channel Wavelength Conversion of nyquist 16 qam signal using a silicon waveguide
Optics Letters, 2015Co-Authors: Yun Long, Xiao Hu, Andong Wang, Fan Zhang, Linjie Zhou, Jian WangAbstract:We experimentally demonstrate on-chip all-optical multi-channel Wavelength Conversion of Nyquist 16 ary quadrature amplitude modulation (16 QAM) signal in a silicon waveguide. The measured optical signal-to-noise ratio (OSNR) penalties of Wavelength Conversion are ∼2 dB. The observed constellations of converted idlers indicate favorable performance of silicon-waveguide-based multi-channel Wavelength Conversion. We also experimentally study and compare the phase-conjugated Wavelength Conversion by degenerate four-wave mixing (FWM) and transparent Wavelength Conversion by non-degenerate FWM in the silicon waveguide.
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tunable optical Wavelength Conversion of ofdm signal using a periodically poled lithium niobate waveguide
Optics Express, 2009Co-Authors: Xiaoxia Wu, Jian Wang, Weiren Peng, V R Arbab, Alan E WillnerAbstract:We experimentally demonstrate tunable optical Wavelength Conversion of a 10-Gb/s radio frequency (RF)-tone assisted orthogonal-frequency-division-multiplexing (OFDM) signal with ~-5 dB (~30%) efficiency over ~30 nm bandwidth using a periodically-poled lithium-niobate (PPLN) waveguide. A penalty of < 3 dB is obtained after Wavelength Conversion. Quadrature amplitude modulation (QAM) size and subcarrier number are varied to further evaluate the performance of the Wavelength converter.
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tunable optical Wavelength Conversion of ofdm signal using a periodically poled lithium niobate waveguide
Optics Express, 2009Co-Authors: Weiren Peng, Jian Wang, V R Arbab, Alan E WillnerAbstract:We experimentally demonstrate tunable optical Wavelength Conversion of a 10-Gb/s radio frequency (RF)-tone assisted orthogonal-frequency-division-multiplexing (OFDM) signal with approximately-5 dB (approximately 30%) efficiency over approximately 30 nm bandwidth using a periodically-poled lithium-niobate (PPLN) waveguide. A penalty of < 3 dB is obtained after Wavelength Conversion. Quadrature amplitude modulation (QAM) size and subcarrier number are varied to further evaluate the performance of the Wavelength converter.
S. J. Ben Yoo - One of the best experts on this subject based on the ideXlab platform.
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A Theoretical and Experimental Study on Modulation-Format-Independent Wavelength Conversion
Journal of Lightwave Technology, 2010Co-Authors: Junya Kurumida, S. J. Ben YooAbstract:Modern optical networks are adopting advanced modulation formats. Future dynamic optical networks will benefit from all-optical Wavelength Conversion and signal regeneration techniques in support of multiple modulation formats. This paper presents a concept for a modulation-format-independent Wavelength Conversion technique based on an optical hybrid and an in-phase/quadrature (IQ) Wavelength converter. This technique has the potential for Wavelength Conversion and signal regeneration of multiple modulation formats. This paper also discusses the signal distortions and noises in the semiconductor optical amplifier based IQ Wavelength converter. A proof-of-principle experiment shows the Wavelength Conversion results of multiple modulation formats. Further, this paper presents the signal regeneration of a return-to-zero quadrature-phase-shifted-keying signal through simulation.
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Modulation-format-independent Wavelength Conversion
Optical Fiber Communication Conference and National Fiber Optic Engineers Conference, 2009Co-Authors: Junya Kurumida, S. J. Ben YooAbstract:This paper provides a proof-of-concept demonstration of modulation-format-independent Wavelength Conversion with an optical hybrid and an IQ Wavelength converter. Multi-format Wavelength Conversion results are presented by using a SOA-based integrated device.
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Wavelength Conversion technologies for WDM network applications
Journal of Lightwave Technology, 1996Co-Authors: S. J. Ben YooAbstract:WDM networks make a very effective utilization of the fiber bandwidth and offer flexible interconnections based on Wavelength routing. In high capacity, dynamic WDM networks, blocking due to Wavelength contention can he reduced by Wavelength Conversion. Wavelength Conversion addresses a number of key issues in WDM networks including transparency, interoperability, and network capacity. Strictly transparent networks offer seamless interconnections with full reconfigurability and interoperability. Wavelength Conversion may be the first obstacle in realizing a transparent WDM network. Among numerous Wavelength Conversion techniques reported to date, only a few techniques offer strict transparency. Optoelectronic Conversion (O/E-E/O) techniques achieve limited transparency, yet their mature technologies allow deployment in the near future. The majority of all-optical Wavelength Conversion techniques also offer limited transparency but they have a potential advantage over the optoelectronic counterpart in realizing lower packaging costs and crosstalk when multiple Wavelength array configurations are considered. Wavelength Conversion by difference-frequency generation offers a full range of transparency while adding no excess noise to the signal. Recent experiments showed promising results including a spectral inversion and a 90 nm Conversion bandwidth. This paper reviews various Wavelength Conversion techniques, discusses the advantages and shortcomings of each technique, and addresses their implications for transparent networks.
Biswanath Mukherjee - One of the best experts on this subject based on the ideXlab platform.
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Fixed-alternate routing and Wavelength Conversion in Wavelength-routed optical networks
IEEE ACM Transactions on Networking, 2002Co-Authors: Ramu Ramamurthy, Biswanath MukherjeeAbstract:Consider an optical network which employs Wavelength-routing crossconnects that enable the establishment of Wavelength-division-multiplexed (WDM) connections between node pairs. In such a network, when there is no Wavelength Conversion, a connection is constrained to be on the same Wavelength channel along its route. Alternate routing can improve the blocking performance of such a network by providing multiple possible paths between node pairs. Wavelength Conversion can also improve the blocking performance of such a network by allowing a connection to use different Wavelengths along its route. This work proposes an approximate analytical model that incorporates alternate routing and sparse Wavelength Conversion. We perform simulation studies of the relationships between alternate routing and Wavelength Conversion on three representative network topologies. We demonstrate that alternate routing generally provides significant benefits, and that it is important to design alternate routes between node pairs in an optimized fashion to exploit the connectivity of the network topology. The empirical results also indicate that fixed-alternate routing with a small number of alternate routes asymptotically approaches adaptive routing in blocking performance.
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Fixed-alternate routing and Wavelength Conversion in Wavelength-routed optical networks
IEEE GLOBECOM 1998 (Cat. NO. 98CH36250), 1998Co-Authors: S. Ramamurthy, Biswanath MukherjeeAbstract:This paper considers optical networks which employ Wavelength-routing switches that enable the establishment of Wavelength-division-multiplexed (WDM) connections between node-pairs. Alternate routing improves the blocking performance of such networks by providing multiple possible paths between node-pairs. Wavelength Conversion improves the blocking performance of such networks by allowing a connection to use different Wavelengths along its route. This paper proposes an approximate computational model that incorporates alternate routing and sparse Wavelength Conversion. The model is shown to give reasonably good estimates of different network parameters. Empirical studies based on discrete-event simulation, illustrate the importance of alternate routing in improving the blocking performance of a Wavelength-routed optical network.
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Wavelength Conversion in WDM networking
IEEE Journal on Selected Areas in Communications, 1998Co-Authors: Byrav Ramamurthy, Biswanath MukherjeeAbstract:Wavelength Conversion has been proposed for use in Wavelength-division multiplexed networks to improve efficiency. This study highlights systems challenges and performance issues which need to be addressed in order to incorporate Wavelength Conversion effectively. A review/survey of the enabling technologies, design methods, and analytical models used in Wavelength-convertible networks is provided.
Weiren Peng - One of the best experts on this subject based on the ideXlab platform.
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tunable optical Wavelength Conversion of ofdm signal using a periodically poled lithium niobate waveguide
Optics Express, 2009Co-Authors: Xiaoxia Wu, Jian Wang, Weiren Peng, V R Arbab, Alan E WillnerAbstract:We experimentally demonstrate tunable optical Wavelength Conversion of a 10-Gb/s radio frequency (RF)-tone assisted orthogonal-frequency-division-multiplexing (OFDM) signal with ~-5 dB (~30%) efficiency over ~30 nm bandwidth using a periodically-poled lithium-niobate (PPLN) waveguide. A penalty of < 3 dB is obtained after Wavelength Conversion. Quadrature amplitude modulation (QAM) size and subcarrier number are varied to further evaluate the performance of the Wavelength converter.
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tunable optical Wavelength Conversion of ofdm signal using a periodically poled lithium niobate waveguide
Optics Express, 2009Co-Authors: Weiren Peng, Jian Wang, V R Arbab, Alan E WillnerAbstract:We experimentally demonstrate tunable optical Wavelength Conversion of a 10-Gb/s radio frequency (RF)-tone assisted orthogonal-frequency-division-multiplexing (OFDM) signal with approximately-5 dB (approximately 30%) efficiency over approximately 30 nm bandwidth using a periodically-poled lithium-niobate (PPLN) waveguide. A penalty of < 3 dB is obtained after Wavelength Conversion. Quadrature amplitude modulation (QAM) size and subcarrier number are varied to further evaluate the performance of the Wavelength converter.
