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Optimal packing for cascaded regenerative transmission based on phase sensitive amplifiers

Mariia Sorokina, Stylianos Sygletos, Andrew D. Ellis, Sergei Turitsyn
2013 Optics Express  
We investigate the transmission performance of advanced modulation formats in nonlinear regenerative channels based on cascaded phase sensitive amplifiers.  ...  The results of this study will greatly simplify the design of future nonlinear regenerative channels for ultra-high capacity transmission.  ...  Acknowledgments The work has been supported by the EPSRC project UNLOC (Unlocking the capacity of optical communications), the Marie Currie -IEF project ARTISTE (Advanced regenerator technologies for high  ... 
doi:10.1364/oe.21.031201 pmid:24514694 fatcat:hcebpsfkyrcf5g4weoj7si633m

Variable Delay With Directly-Modulated R-SOA and Optical Filters for Adaptive Antenna Radio-Fiber Access

K. Prince, M. Presi, A. Chiuchiarelli, I. Cerutti, G. Contestabile, I.T. Monroy, E. Ciaramella
2009 Journal of Lightwave Technology  
The system is based on a directly-modulated reflective semiconductor amplifier (R-SOA) and exploits the interplay between transmission-line dispersion and tunable optical filtering to achieve flexible  ...  The system was characterized, then successfully tested with two types of signals defined in IEEE 802.16 (WiMAX) standard for wireless networks: a 90 Mbps single-carrier signal (64-QAM at 2.4 GHz) and a  ...  ACKNOWLEDGMENT The authors would like to thank M. Pagano and R. Sacchi of Agilent Technologies for technical support and the loan of the N9020A MXA signal analyzer and E4438C ESG generator.  ... 
doi:10.1109/jlt.2009.2026491 fatcat:42rdrl2dcvgf7lm3kz3zok3bv4

Analysis of optical back propagation under non-ideal optical phase conjugation and amplifier noise

Guanhui Wang, Mohammad Rezagholipour Dizaji, Lawrence R. Chen, Steve MacLean, David V. Plant
2014 Photonics North 2014  
Fiber nonlinearity is considered to be the major obstacle in the development of communication capacity. Optical back propagation is one of the ways to address this problem.  ...  For further investigation into the optical back propagation system, advanced modulation formats of the optical signals and higher transmission baud rate effects are studied.  ...  The results of this thesis were presented in part in the following conference paper: G. Wang, M. Rezagholipour Dizaji, and L. R.  ... 
doi:10.1117/12.2075311 fatcat:33rfn2kq2jdedjgqg3kht25a44

All-Optical Silicon-Photonic Constellation Conversion of Amplitude–Phase Modulation Formats

Tomer Yeminy, Dan Sadot, Zeev Zalevsky
2015 IEEE Photonics Journal  
A mathematical model is developed, and the parameters influencing the performance of the method are analyzed.  ...  The method is based on the implementation of single-layer radial basis function neural networks.  ...  On the other hand, the influence of the input OSNR is less dominant; it does not affect the average power and phase of the signals at the inputs of the SOAs, thus resulting in a weaker influence on U.  ... 
doi:10.1109/jphot.2015.2409234 fatcat:clqzhnq7vnhw5gv4uyk5yutwha

D3.1 Selection of metro node architectures and optical technology options

Andrew Lord, Anna Chiadò Piat, Alessandro Percelsi, Marco Quagliotti, Emilio Riccardi, Michela Svaluto Moreolo, Josep M. Fabrega, Laia Nadal, F. Javier Vilchez, Neelakandan Manihatty Bojan, Shuangyi Yan, Reza Nejabati (+30 others)
2018 Zenodo  
first year of the METRO-HAUL project.  ...  D3.1 reports details of the Metro Node and Optical Network Elements architectures together with the relevant design guidelines for the access-metro and metro-core edge nodes, as well as the WDM transport  ...  The DSP part at the transmitter consists of a FEC encoder, subcarrier modulation and pulse shaping, as well as a nonlinear pre-distortion stage to compensate for transmitter component impairments.  ... 
doi:10.5281/zenodo.2586697 fatcat:vhgxhkevhvbrzmbw5do6by2m5i

Tunable optical delay line based on single-sideband suppressed-carrier modulation

J. Palaci, B. Vidal
2013 IEEE Photonics Technology Letters  
This thesis is focused on the application of vector processing in the optical domain to radiofrequency signals in two fields of application: optical beamforming, and photonic vector modulation and demodulation  ...  of digital quadrature amplitude modulations.  ...  Mb/s 32-QAM modulating signal at 1 GHz was generated using one broadband modem board.  ... 
doi:10.1109/lpt.2012.2227697 fatcat:e5uasvwjd5ckvcllvynughtbg4

Label-controlled optical switching nodes [article]

Vegas Olmos, JJ (Juan José), Koonen, AMJ (Ton), Tafur Monroy, I (Idelfonso)
The use of a QAM format is introduced to reduce the net modulation bandwidth of the SCM label signal and therefore to minimize the crosstalk on the DPSK payload.  ...  We present in this Section theoretical and experimental studies on the performance of the combined FSK/IM scheme impaired by the filter shape.  ...  There he investigated within Ericsson Telecom AB laboratories, an algorithm for optimal guess of signal to noise ratio over a digital subscriber line.  ... 
doi:10.6100/ir612910 fatcat:tcj47ng7hjgrhomx2yuzjfrz3m

Kerr nonlinearity compensation using polarization-independent fiber-based optical parametric amplifier in high-speed optical transmission systems

Isaac Sackey, Technische Universität Berlin, Technische Universität Berlin
Kerr nonlinearity compensation in long-haul optical transmission networks has become necessary since the nonlinear impairment poses fundamental limits on the achievable transmission reach.  ...  However, the implementation of FOPAs in practical transmission systems is limited by their inherent polarization-dependent nature.  ...  The influence of pump power variation on the signal gain-bandwidth is also investigated.  ... 
doi:10.14279/depositonce-5180 fatcat:ktv4uosuuzdhrhzrpetnclewvm

The effect of laser noise on an optical ofdm system

Zuraidah Zan
This thesis focuses on the DDO-OFDM system using external modulation at the transmitter. A transmission system was developed to study the effects of the laser relative intensity noise [...]  ...  The CO-OFDM system is known to be limited by the laser's phase noise, where the system requires a narrow linewidth laser at both transmitter and receiver, where these lasers phase must track one-another  ...  Also, the high-speed transmission of NRZ signals for example at 40 Gb/s will be impaired by the chromatic dispersion.  ... 
doi:10.4225/03/58b3a09699a17 fatcat:gioxfivnnfgcnonwr6hyraiwru

Optical broadband in-home networks for converged service delivery [article]

Y Yan Shi, AMJ Ton Koonen, E Eduward Tangdiongga
Solomon Abraha for sharing the office room and making  ...  VCSEL bias and linearity In this subsection, the influence on the UWB signals by the system parameters is examined.  ...  Carrierless amplitude phase modulation (CAP)/QAM One variation of QAM is CAP, which eliminates the explicit modulation and demodulation in QAM.  ... 
doi:10.6100/ir752630 fatcat:qvhe3ofhpvf5pekm7kynba5lou

Impairment analysis and mitigation for cost-effective OFDM-based access systems

Nuno Miguel Duarte Sequeira André, Technische Universität Berlin, Technische Universität Berlin, Klaus Petermann
This occurs despite OFDM's resilience to chromatic dispersion and is one of the main impairments of cost-effective OFDM-based access systems.  ...  A DML has chirp as a by-product of transmission [12], [13].  ...  the parameter that controls the ratio of phase modulation to modulator signal amplitude.  ... 
doi:10.14279/depositonce-9459 fatcat:n6fhvh3l3ncbbamzw37b4666xa

Future Extensions to Passive Optical Access Networks

Robert Radziwilowicz, Université D'Ottawa / University Of Ottawa, Université D'Ottawa / University Of Ottawa
SOA is also studied as an energy efficient optical amplifier that can be deployed in end user facilities. The presented res [...]  ...  Rapid changes in population distribution across Canada and the introduction of new telecommunication services to the consumer market have resulted in a number of significant challenges for existing network  ...  The results of this work were presented in the following publications:  ... 
doi:10.20381/ruor-5676 fatcat:hgq7mbbocng6nhpnp7hyazrini

Real-time Digital Signal Processing for Software-defined Optical Transmitters and Receivers

Rene Marcel Schmogrow
Additional impairments experienced by PDM-signals are caused by polarization mode dispersion (PMD) [55] and polarization dependent loss (PDL) [56] both of which will be explained later.  ...  One of the most interesting characteristics (next to the modulation bandwidth) of a MZM is described by the V π parameter.  ...  QAM modulated signals come into play.  ... 
doi:10.5445/ksp/1000042847 fatcat:juzwyq5mazhxtlan73n756h4lq

Single-Laser Multi-Terabit/s Systems

David Hillerkuss
The effect of the nonlinearity of the modulator on a 16 QAM signal is displayed in Fig. A.24 .  ...  By modulating more than one parameter of the carrier, the number of possible states can be increased even further.  ...  The filter length was limited to 32 symbols, which slightly increased the spectral width of the modulated signals.  ... 
doi:10.5445/ksp/1000033390 fatcat:5ivizznxjrfutj5egzqf7v7p5u

Measurement techniques for the characterization of radio frequency gallium nitride devices and power amplifiers

Alberto Maria Angelotti
Either the well was very deep, or she fell very slowly, for she had plenty of time as she went down to look about her, and to wonder what would happen next."  ...  The rabbit-hole went straight on like a tunnel for some way, and then dipped suddenly down, so suddenly, that Alice had not a moment to think about stopping herself, before she found herself falling down  ...  Therefore, EVM, originally a signal metric, can also be used to characterize the amount of nonlinear distortion introduced by the PA in the transmitter [116] when excited with a modulated signal.  ... 
doi:10.6092/unibo/amsdottorato/9834 fatcat:ylwycrsas5a3rinxlkxhu3wgwm
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