Low Complexity Digital Signal Processing for Optical Communications – Chromatic Dispersion, Polarization and Timing Synchronization

.......................................................................................................... 9 Zusammenfassung ......................................................................................... 10 Achievements of This Work ........................................................................... 11

[1]  Stephen Corteselli,et al.  Real-time FPGA-based intradyne coherent receiver for 40 Gbit/s polarization-multiplexed 16-QAM , 2011, 2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference.

[2]  Xiang Zhou,et al.  Efficient Clock and Carrier Recovery Algorithms for Single-Carrier Coherent Optical Systems: A systematic review on challenges and recent progress , 2014, IEEE Signal Processing Magazine.

[3]  W Shieh,et al.  OFDM for Flexible High-Speed Optical Networks , 2011, Journal of Lightwave Technology.

[4]  Juerg Leuthold,et al.  Digital Post-Distortion for Cost-Efficient Driverless Optical Transmitters , 2018 .

[5]  Ying Zhao,et al.  Digital clock recovery algorithm for Nyquist signal , 2013, 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC).

[6]  C. Brès,et al.  Optical sinc-shaped Nyquist pulses of exceptional quality , 2013, Nature Communications.

[7]  Philippe Ciblat,et al.  Accurate digital frequency offset estimator for coherent PolMux QAM transmission systems , 2009, 2009 35th European Conference on Optical Communication.

[8]  Edward J. Powers,et al.  A new Volterra predistorter based on the indirect learning architecture , 1997, IEEE Trans. Signal Process..

[9]  Tenkasi V. Ramabadran,et al.  A coding scheme for m-out-of-n codes , 1990, IEEE Trans. Commun..

[10]  Kenli Li,et al.  A Fast Algorithm Based on SRFFT for Length N = q × 2 m DFTs , 2013 .

[11]  Danish Rafique,et al.  Digital Preemphasis in Optical Communication Systems: On the DAC Requirements for Terabit Transmission Applications , 2014, Journal of Lightwave Technology.

[12]  Nobuhiko Kikuchi,et al.  FPGA Prototyping of Single-Polarization 112-Gb/s Transceiver for Optical Multilevel Signaling With Intensity and Delay Detection , 2016, Journal of Lightwave Technology.

[13]  Guoan Bi,et al.  Fast DFT algorithms for length N=q*2/sup m/ , 1998 .

[14]  S. Savory,et al.  Pulse-shaping versus digital backpropagation in 224Gbit/s PDM-16QAM transmission. , 2011, Optics express.

[15]  F. Buchali,et al.  Electronic Dispersion Compensation , 2008, Journal of Lightwave Technology.

[16]  Masahiko Jinno,et al.  Elastic optical networking: a new dawn for the optical layer? , 2012, IEEE Communications Magazine.

[17]  Xiang Zhou Hardware Efficient Carrier Recovery Algorithms for Single-Carrier QAM systems , 2012 .

[18]  Polina Bayvel,et al.  Increasing the information rates of optical communications via coded modulation: a study of transceiver performance , 2016, Scientific reports.

[19]  Maxim Kuschnerov,et al.  Digital Compensation of Bandwidth Limitations for High-Speed DACs and ADCs , 2016, Journal of Lightwave Technology.

[20]  Zhuhong Zhang,et al.  Chromatic Dispersion Estimation in Digital Coherent Receivers , 2011, Journal of Lightwave Technology.

[21]  P. Duhamel,et al.  `Split radix' FFT algorithm , 1984 .

[22]  Idelfonso Tafur Monroy,et al.  First real-time 400G PAM-4 demonstration for inter-data center transmission over 100 km of SSMF at 1550 nm , 2016, 2016 Optical Fiber Communications Conference and Exhibition (OFC).

[23]  S. Kanazawa,et al.  1.3-μm, 4 × 25-Gbit/s, EADFB laser array module with large-output-power and low-driving-voltage for energy-efficient 100GbE transmitter. , 2012, Optics express.

[24]  Chongjin Xie Chromatic Dispersion Estimation for Single-Carrier Coherent Optical Communications , 2013, IEEE Photonics Technology Letters.

[25]  S. Chandrasekhar,et al.  Field demonstration of 100-Gb/s real-time coherent optical OFDM detection , 2015, 2014 The European Conference on Optical Communication (ECOC).

[26]  F. Guiomar,et al.  Simplified Volterra Series Nonlinear Equalizer for Polarization-Multiplexed Coherent Optical Systems , 2013, Journal of Lightwave Technology.

[27]  Jack E. Volder The CORDIC Trigonometric Computing Technique , 1959, IRE Trans. Electron. Comput..

[28]  Qunbi Zhuge,et al.  Digital subcarrier multiplexing for fiber nonlinearity mitigation in coherent optical communication systems. , 2014, Optics express.

[29]  S. Savory Digital Coherent Optical Receivers: Algorithms and Subsystems , 2010, IEEE Journal of Selected Topics in Quantum Electronics.

[30]  Sen M. Kuo,et al.  Real-time digital signal processing , 2001 .

[31]  Polina Bayvel,et al.  Replacing the Soft-Decision FEC Limit Paradigm in the Design of Optical Communication Systems , 2015, Journal of Lightwave Technology.

[32]  Wataru Kobayashi,et al.  Large-output-power, ultralow-driving-voltage (0.5 Vpp) operation of 1.3-μm, 4×25G, EADFB laser array for driverless 100GbE transmitter , 2011, 2011 37th European Conference and Exhibition on Optical Communication.

[33]  S. Chandrasekhar,et al.  All-Electronic 100-GHz Bandwidth Digital-to-Analog Converter Generating PAM Signals up to 190 GBaud , 2016, Journal of Lightwave Technology.

[34]  Peter J. Winzer,et al.  Making spatial multiplexing a reality , 2014, Nature Photonics.

[35]  J. Leuthold,et al.  Low Power Mach–Zehnder Modulator in Silicon-Organic Hybrid Technology , 2013, IEEE Photonics Technology Letters.

[36]  Seok-Joong Heo,et al.  An overview of peak-to-average power ratio reduction schemes for OFDM signals , 2009, Journal of Communications and Networks.

[37]  Xian Xu,et al.  Constellation Shaped 66 GBd DP-1024QAM Transceiver with 400 km Transmission over Standard SMF , 2017, 2017 European Conference on Optical Communication (ECOC).

[38]  Erwan Pincemin,et al.  Dual-polarization multi-band OFDM versus single-carrier DP-QPSK for 100 Gbps long-haul WDM transmission over legacy infrastructure , 2012 .

[39]  Stephen A. Dyer,et al.  Digital signal processing , 2018, 8th International Multitopic Conference, 2004. Proceedings of INMIC 2004..

[40]  Dan M. Marom,et al.  Fine Resolution Photonic Spectral Processor Using a Waveguide Grating Router With Permanent Phase Trimming , 2016, Journal of Lightwave Technology.

[41]  Seung Joon Lee A new non-data-aided feedforward symbol timing estimator using two samples per symbol , 2002, IEEE Commun. Lett..

[42]  Thomas M. Cover,et al.  Elements of Information Theory , 2005 .

[43]  Yoshiaki Konishi,et al.  Soft-Decision-Based Forward Error Correction for 100 Gb/s Transport Systems , 2010, IEEE Journal of Selected Topics in Quantum Electronics.

[44]  I. Tomkos,et al.  A novel architecture for all-optical add-drop multiplexing of OFDM signals , 2014, 2014 The European Conference on Optical Communication (ECOC).

[45]  David Hillerkuss,et al.  FPGA-based Realtime Receivers for Nyquist-FDM , 2017 .

[46]  Ginni Khanna,et al.  A Robust Adaptive Pre-Distortion Method for Optical Communication Transmitters , 2016, IEEE Photonics Technology Letters.

[47]  Fred Buchali,et al.  Transmission reach of optical-OFDM superchannels with 10–600 Gb/s for transparent bit-rate adaptive networks , 2011, 2011 37th European Conference and Exhibition on Optical Communication.

[48]  G.E. Betts,et al.  Limits on the performance of RF-over-fiber links and their impact on device design , 2006, IEEE Transactions on Microwave Theory and Techniques.

[49]  Kazuo Hagimoto,et al.  Ultrahigh-speed driverless MQW intensity modulator, and 20 Gbit/s, 100 km transmission experiments , 1992 .

[50]  David Hillerkuss,et al.  Multiplier-Free Real-Time Timing Recovery Algorithm in the Frequency Domain Based on Modified Godard , 2015 .

[51]  Cliff B. Jones An efficient coding system for long source sequences , 1981, IEEE Trans. Inf. Theory.

[52]  D.J.G. Mestdagh,et al.  Analysis of clipping effect in DMT-based ADSL systems , 1994, Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications.

[53]  C. Cox,et al.  Low Noise Figure, Wide Bandwidth Analog Optical Link , 2005, 2005 International Topical Meeting on Microwave Photonics.

[54]  A.H. Gnauck,et al.  Optical phase-shift-keyed transmission , 2005, Journal of Lightwave Technology.

[55]  Donald C. Cox,et al.  Robust frequency and timing synchronization for OFDM , 1997, IEEE Trans. Commun..

[56]  T. Duthel,et al.  1Tb/s real-time 4×40Gbaud DP-16QAM superchannel using CFP2-ACO pluggables over 625 km of standard fibre , 2016, 2016 Optical Fiber Communications Conference and Exhibition (OFC).

[57]  R. Noe,et al.  Hardware-Efficient Coherent Digital Receiver Concept With Feedforward Carrier Recovery for $M$ -QAM Constellations , 2009, Journal of Lightwave Technology.

[58]  Juerg Leuthold,et al.  Driver-Less Sub 1 Vpp Operation of a Plasmonic-Organic Hybrid Modulator at 100 GBd NRZ , 2018, 2018 Optical Fiber Communications Conference and Exposition (OFC).

[59]  Erwan Pincemin,et al.  Multi-Band OFDM Transmission at 100 Gbps With Sub-Band Optical Switching , 2014, Journal of Lightwave Technology.

[60]  Ginni Khanna,et al.  Adaptive Transmitter Pre-Distortion Using Feedback From the Far-End Receiver , 2018, IEEE Photonics Technology Letters.

[61]  Noriaki Kaneda,et al.  A 112Gb/s 4-PAM Transceiver Chipset in 0.18µm SiGe BiCMOS Technology for Optical Communication Systems , 2015, 2015 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS).

[62]  C. W. Farrow,et al.  A continuously variable digital delay element , 1988, 1988., IEEE International Symposium on Circuits and Systems.

[63]  Gordana Jovanovic Dolecek,et al.  Fractional Delay Digital Filters , 2011 .

[64]  Chao Lu,et al.  Performance analysis of blind timing phase estimators for digital coherent receivers. , 2014, Optics express.

[65]  M. Arikawa,et al.  Transmission of a 127 Gb/s PM-QPSK signal over a 3350 km SMF-only line with chromatic dispersion compensation using real-time DSP [Invited] , 2012, IEEE/OSA Journal of Optical Communications and Networking.

[66]  Jianjun Yu,et al.  Advanced algorithm for high-baud rate signal generation and detection , 2017, 2017 Optical Fiber Communications Conference and Exhibition (OFC).

[67]  Sethumadhavan Chandrasekhar,et al.  Experimental quantification of implementation penalties from limited ADC resolution for Nyquist shaped higher-order QAM , 2016, 2016 Optical Fiber Communications Conference and Exhibition (OFC).

[68]  R. P. Gooch,et al.  Blind equalization based on radius directed adaptation , 1990, International Conference on Acoustics, Speech, and Signal Processing.

[69]  Steven G. Johnson,et al.  A Modified Split-Radix FFT With Fewer Arithmetic Operations , 2007, IEEE Transactions on Signal Processing.

[70]  B. Mikkelsen,et al.  A robust real-time 100G transceiver With soft-decision forward error correction [Invited] , 2012, IEEE/OSA Journal of Optical Communications and Networking.

[71]  M. Nazarathy,et al.  Sub-banded / single-sub-carrier drop-demux and flexible spectral shaping with a fine resolution photonic processor , 2014, 2014 The European Conference on Optical Communication (ECOC).

[72]  Khalid Sayood,et al.  Introduction to Data Compression , 1996 .

[73]  M. Chagnon,et al.  Experimental Parametric Study of a Silicon Photonic Modulator Enabled 112-Gb/s PAM Transmission System With a DAC and ADC , 2015, Journal of Lightwave Technology.

[74]  Yongqi He,et al.  Experimental demonstration of subband switching functionality on optical OFDM superchannel , 2012, OFC/NFOEC.

[75]  David Hillerkuss,et al.  Constellation modulation - an approach to increase spectral efficiency. , 2017, Optics express.

[76]  D. Hillerkuss,et al.  168 Gb/s line rate real-time PAM receiver enabled by timing recovery with 8/7 oversampling in a single FPGA , 2017, 2017 Optical Fiber Communications Conference and Exhibition (OFC).

[77]  I. Tomkos,et al.  Techno-economic analysis of flexi-grid networks with all-optical add/drop capability , 2015, 2015 International Conference on Photonics in Switching (PS).

[78]  Masataka Nakazawa,et al.  Highly dispersion-tolerant 160 Gbaud optical Nyquist pulse TDM transmission over 525 km. , 2012, Optics express.

[79]  P. Farrell,et al.  Essentials of Error-control Coding , 2006 .

[80]  Qi Yang,et al.  Transmission of 24-Gb/s PAM-4 Over 150-km SSMF using a Driverless Silicon Microring Modulator , 2014, 2014 Asia Communications and Photonics Conference (ACP).

[81]  David A. B. Miller Attojoule Optoelectronics for Low-Energy Information Processing and Communications , 2017, Journal of Lightwave Technology.

[82]  Wolfgang Freude,et al.  Femtojoule electro-optic modulation using a silicon–organic hybrid device , 2015, Light: Science & Applications.

[83]  Jianjun Yu,et al.  Experimental demonstration of PDM-32QAM single-carrier 400G over 1200-km transmission enabled by training-assisted pre-equalization and look-up table , 2016, 2016 Optical Fiber Communications Conference and Exhibition (OFC).

[84]  Hubert Kaeslin,et al.  Top-Down Digital VLSI Design: From Architectures to Gate-Level Circuits and FPGAs , 2014 .

[85]  David Hillerkuss,et al.  Low-Complexity Real-Time Receiver for Coherent Nyquist-FDM Signals , 2018, Journal of Lightwave Technology.

[86]  David V. Plant,et al.  400-G Single Carrier 500-km Transmission With an InP Dual Polarization IQ Modulator , 2016, IEEE Photonics Technology Letters.

[87]  Colja Schubert,et al.  Nonlinear digital pre-distortion of transmitter components , 2017 .

[88]  Masahiko Jinno,et al.  Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies , 2009, IEEE Communications Magazine.

[89]  I. Morita,et al.  Coherent Optical 25.8-Gb/s OFDM Transmission Over 4160-km SSMF , 2008, Journal of Lightwave Technology.

[90]  Steven W. Smith,et al.  The Scientist and Engineer's Guide to Digital Signal Processing , 1997 .

[91]  E. Pincemin,et al.  Frequency offset estimation in a polarization-multiplexed coherent OFDM system stressed by chromatic dispersion and PMD , 2012, 2012 Conference on Lasers and Electro-Optics (CLEO).

[92]  François Gagnon,et al.  Peak-to-average power ratio and intersymbol interference reduction by Nyquist pulse optimization , 2004, IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004.

[93]  S. Chandrasekhar,et al.  1.12-Tb/s 32-QAM-OFDM superchannel with 8.6-b/s/Hz intrachannel spectral efficiency and space-division multiplexing with 60-b/s/Hz aggregate spectral efficiency , 2011, 2011 37th European Conference and Exhibition on Optical Communication.

[94]  C. Dorrer,et al.  Chirped return-to-zero modulation by imbalanced pulse carver driving signals , 2004, IEEE Photonics Technology Letters.

[95]  A. Ellis,et al.  Spectral density enhancement using coherent WDM , 2005, IEEE Photonics Technology Letters.

[96]  K. Mueller,et al.  Timing Recovery in Digital Synchronous Data Receivers , 1976, IEEE Trans. Commun..

[97]  Hideaki Tanaka,et al.  Long-haul transmission of16×52.5 Gbits/s polarization-division- multiplexed OFDM enabled by MIMO processing (Invited) , 2008 .

[98]  Sarah J. Johnson Iterative Error Correction: Low-density parity-check codes , 2009 .

[99]  Wolfgang Freude,et al.  DAC-Less Amplifier-Less Generation and Transmission of QAM Signals Using Sub-Volt Silicon-Organic Hybrid Modulators , 2015, Journal of Lightwave Technology.

[100]  Ricardo M. Ferreira,et al.  Coherent Nyquist UDWDM-PON With Digital Signal Processing in Real Time , 2016, Journal of Lightwave Technology.

[101]  Ioannis Tomkos,et al.  Cost and power consumption model for flexible super-channel transmission with all-optical sub-channel add/drop capability , 2015, 2015 17th International Conference on Transparent Optical Networks (ICTON).

[102]  Erwan Pincemin,et al.  Modified Godard Algorithm Applied on a Fractional Oversampled Signal to Correct CD, Polarization, and CFO , 2016 .

[103]  Bernhard C. Geiger,et al.  Optimal Quantization for Distribution Synthesis , 2013, IEEE Transactions on Information Theory.

[104]  D. Godard,et al.  Passband Timing Recovery in an All-Digital Modem Receiver , 1978, IEEE Trans. Commun..

[105]  Fan Yu,et al.  Experimental Comparison of 32-Gbaud Electrical-OFDM and Nyquist-WDM Transmission with 64GSa/s DAC , 2013 .

[106]  Mahdi M. Mezghanni,et al.  Digital Predistortion Techniques for Finite Extinction Ratio IQ Mach–Zehnder Modulators , 2017, Journal of Lightwave Technology.

[107]  Philip Schniter,et al.  Blind equalization using the constant modulus criterion: a review , 1998, Proc. IEEE.

[108]  S. Winograd On computing the Discrete Fourier Transform. , 1976, Proceedings of the National Academy of Sciences of the United States of America.

[109]  Masaya Notomi,et al.  Ultralow-energy electro-absorption modulator consisting of InGaAsP-embedded photonic-crystal waveguide , 2017 .

[110]  S. M. Bilal,et al.  Analytical and Experimental Results on System Maximum Reach Increase Through Symbol Rate Optimization , 2016, Journal of Lightwave Technology.

[111]  Juerg Leuthold,et al.  Coherent Reception of NFDM Signals on a Single FPGA-Board Enabled by Low Complexity Algorithms , 2017, 2017 Asia Communications and Photonics Conference (ACP).

[112]  Xiang Liu,et al.  Wavelength blocking filter with flexible data rates and channel spacing , 2005, Journal of Lightwave Technology.

[113]  Ioannis Tomkos,et al.  Investigation of mid-term network migration scenarios comparing multi-band and multi-fiber deployments , 2016, 2016 Optical Fiber Communications Conference and Exhibition (OFC).

[114]  Xi Chen,et al.  Probabilistically shaped PDM 4096-QAM transmission over up to 200 km of fiber using standard intradyne detection. , 2018, Optics express.

[115]  C. Koos,et al.  Blind Polarization Demultiplexing With Low Computational Complexity , 2013, IEEE Photonics Technology Letters.

[116]  B.M. Oliver,et al.  The Philosophy of PCM , 1948, Proceedings of the IRE.

[117]  Geoffrey Ye Li,et al.  OFDM and Its Wireless Applications: A Survey , 2009, IEEE Transactions on Vehicular Technology.

[118]  Erwan Pincemin,et al.  400 Gbps real-time coherent Nyquist-WDM DP-16QAM transmission over legacy G.652 or G.655 fibre infrastructure with 2 dB margins , 2015, 2015 Optical Fiber Communications Conference and Exhibition (OFC).

[119]  Zhongde Wang,et al.  A prime factor fast W transform algorithm , 1992, IEEE Trans. Signal Process..

[120]  I. Tomkos,et al.  Impairment-aware resource allocation over flexi-grid network with all-optical add/drop capability , 2015, 2015 European Conference on Optical Communication (ECOC).

[121]  Heinrich Meyr,et al.  Digital filter and square timing recovery , 1988, IEEE Trans. Commun..

[122]  Yutaka Miyamoto,et al.  Optical Modulator With a Near-Linear Field Response , 2016, Journal of Lightwave Technology.

[123]  I. Tomkos,et al.  Flexible optical cross-connects for high bit rate elastic photonic transport networks [Invited] , 2016, IEEE/OSA Journal of Optical Communications and Networking.

[124]  Fred Buchali,et al.  Demonstration of bit rate variable ROADM functionality on an optical OFDM superchannel , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[125]  Shalva Ben-Ezra,et al.  Nyquist-WDM filter shaping with a high-resolution colorless photonic spectral processor. , 2013, Optics letters.

[126]  T. Duthel,et al.  Low cost transmitter self-calibration of time delay and frequency response for high baud-rate QAM transceivers , 2017, 2017 Optical Fiber Communications Conference and Exhibition (OFC).

[127]  Kyunghwan Oh,et al.  A novel dispersion and PMD tolerant clock phase detector for coherent transmission systems , 2011 .

[128]  Seb J Savory,et al.  Digital filters for coherent optical receivers. , 2008, Optics express.

[129]  A. Biberman,et al.  An ultralow power athermal silicon modulator , 2014, Nature Communications.

[130]  Simon Poole,et al.  Bandwidth-flexible ROADMs as network elements , 2011, 2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference.

[131]  J. Tellado,et al.  Multicarrier Modulation with Low Par: Applications to DSL and Wireless , 2000 .

[132]  F. Buchali,et al.  Preemphased prime frequency multicarrier bases ENOB assessment and its application for optimizing a dual-carrier 1-Tb/s QAM transmitter , 2016, 2016 Optical Fiber Communications Conference and Exhibition (OFC).

[133]  David Hillerkuss,et al.  Multi-format carrier recovery for coherent real-time reception with processing in polar coordinates. , 2016, Optics express.

[134]  Homayoun Nikookar,et al.  Random phase updating algorithm for OFDM transmission with low PAPR , 2002, IEEE Trans. Broadcast..

[135]  Floyd M. Gardner,et al.  A BPSK/QPSK Timing-Error Detector for Sampled Receivers , 1986, IEEE Trans. Commun..

[136]  Chao Lu,et al.  Advanced DSP Techniques Enabling High Spectral Efficiency and Flexible Transmissions: Toward elastic optical networks , 2014, IEEE Signal Processing Magazine.

[137]  M. Karlsson,et al.  Which is the most power-efficient modulation format in optical links? , 2009, Optics express.

[138]  Sébastien Bigo,et al.  204-GBaud On-Off Keying Transmitter for Inter-Data Center Communications , 2018, 2018 Optical Fiber Communications Conference and Exposition (OFC).

[139]  Laurent Schmalen,et al.  Implementation of 64QAM at 42.66 GBaud using 1.5 samples per symbol DAC and demonstration of up to 300 km fiber transmission , 2014, OFC 2014.

[140]  A. Gnauck,et al.  112-Gb/s polarization-multiplexed 16-QAM on a 25-GHz WDM grid , 2008, 2008 34th European Conference on Optical Communication.

[141]  Patrick Schulte,et al.  Constant Composition Distribution Matching , 2015, IEEE Transactions on Information Theory.

[142]  David Hillerkuss,et al.  Blind Real-Time Multi-Format Carrier Recovery for Flexible Optical Networks , 2015 .

[143]  Andreas Winkelbauer,et al.  BLIND PERFORMANCE ESTIMATION AND QUANTIZER DESIGN WITH APPLICATIONS TO RELAY NETWORKS , 2014 .

[144]  J. Tukey,et al.  An algorithm for the machine calculation of complex Fourier series , 1965 .

[145]  D. Hillerkuss,et al.  Multiplier-free carrier-phase recovery for real-time receivers using processing in polar coordinates , 2015, 2015 Optical Fiber Communications Conference and Exhibition (OFC).

[146]  Patrick Schulte,et al.  Rate Adaptation and Reach Increase by Probabilistically Shaped 64-QAM: An Experimental Demonstration , 2016, Journal of Lightwave Technology.

[147]  Behzad Razavi Clock Recovery from Random Binary Signals , 1996 .

[148]  Xu Chuan,et al.  Clock recovery in coherent optical receivers , 2015, 2015 Optical Fiber Communications Conference and Exhibition (OFC).

[149]  N. Stojanovic,et al.  Generation of 28GBaud and 32GBaud PDM-Nyquist-QPSK by a DAC with 11.3GHz analog bandwidth , 2013, 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC).

[150]  Wolfgang Rave,et al.  Effects of Phase Noise on OFDM Systems With and Without PLL: Characterization and Compensation , 2007, IEEE Transactions on Communications.

[151]  E. Pincemin,et al.  Electrical v/s optical aggregation in multi-layer optical transport networks , 2015, 2015 International Conference on Photonics in Switching (PS).

[152]  Patrick Schulte,et al.  Bandwidth Efficient and Rate-Matched Low-Density Parity-Check Coded Modulation , 2015, IEEE Transactions on Communications.

[153]  Weimin Zhou,et al.  10 GHz dual loop opto-electronic oscillator without RF-amplifiers , 2008, SPIE OPTO.

[154]  William S. C. Chang,et al.  Novel high-frequency electroabsorption multiple-quantum-well waveguide modulator operating at 1.3 μm on GaAs substrates , 1997, Photonics West.

[155]  M. Karlsson,et al.  Power-Efficient Modulation Formats in Coherent Transmission Systems , 2009, Journal of Lightwave Technology.

[156]  David V. Plant,et al.  Impact of Chromatic Dispersion Compensation in Single Carrier Two-Dimensional Stokes Vector Direct Detection System , 2017, IEEE Photonics Journal.

[157]  Harvey F. Silverman,et al.  An introduction to programming the Winograd Fourier transform algorithm (WFTA) , 1977 .

[158]  Y. Jaouen,et al.  Multi-band OFDM Transmission with Sub-band Optical Switching , 2013 .

[159]  Erwan Pincemin,et al.  Coherent optical transmission at 40 and 100 Gbps over 1000 km of DCF-free G.652 and G.655 fibre infrastructure , 2014, OFC 2014.

[160]  Sanjit K. Mitra,et al.  Sampling Rate Conversion in the Frequency Domain [DSP Tips and Tricks] , 2011, IEEE Signal Processing Magazine.

[161]  M. Borgerding,et al.  Turning overlap-save into a multiband mixing, downsampling filter bank , 2006 .

[162]  J. Armstrong,et al.  OFDM for Optical Communications , 2009, Journal of Lightwave Technology.

[163]  I. Tomkos,et al.  All-optical vs. electrical aggregations CAPEX comparisons in a fully-flexible multi-layer transport network , 2015, 2015 European Conference on Optical Communication (ECOC).

[164]  Jianqiang Li,et al.  Approaching Nyquist Limit in WDM Systems by Low-Complexity Receiver-Side Duobinary Shaping , 2012, Journal of Lightwave Technology.

[165]  David Hillerkuss,et al.  Modified Godard Timing Recovery for Non Integer Oversampling Receivers , 2017 .

[166]  D. Godard,et al.  Self-Recovering Equalization and Carrier Tracking in Two-Dimensional Data Communication Systems , 1980, IEEE Trans. Commun..

[167]  Laurent Schmalen,et al.  Single carrier 1.2 Tbit/s transmission over 300 km with PM-64 QAM at 100 GBaud , 2017, 2017 Optical Fiber Communications Conference and Exhibition (OFC).

[168]  B. Dama,et al.  Experimental demonstration of ultra-low-power single polarization 56 Gb/s QAM-16 generation without DAC using CMOS photonics , 2014, 2014 The European Conference on Optical Communication (ECOC).

[169]  SYNCHRONIZING A PULSE CARVER AND A DATA MODULATOR FOR OPTICAL TELECOMMUNICATION , 2017 .

[170]  Juerg Leuthold,et al.  Optical Transmitters without Driver Amplifiers—Optimal Operation Conditions , 2018, Applied Sciences.

[171]  R. Yavne An Economical Method for Calculating the Discrete Fourier Transform , 1899 .

[172]  K. Zhong,et al.  Single Channel 50 Gbit/s Transmission Over 40 km SSMF Without Optical Amplification and In-Line Dispersion Compensation Using a Single-End PD-Based PDM-SSB-DMT System , 2017, IEEE Photonics Journal.

[173]  Richard D. Gitlin,et al.  Optimization of Two-Dimensional Signal Constellations in the Presence of Gaussian Noise , 1974, IEEE Trans. Commun..

[174]  Sebastian Randel,et al.  Advanced Modulation Schemes for Short-Range Optical Communications , 2010, IEEE Journal of Selected Topics in Quantum Electronics.