World's Best Scientists 2026 revealed!

D-Index & Metrics

Engineering and Technology

D-Index
46
Citations
10074
World Ranking
5085
National Ranking
1446

R.W. Tkach publication distribution in Engineering and Technology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Engineering and Technology in 2026. The highlighted bar marks where R.W. Tkach sits on this spectrum.

38–47 publications: 20 scientists 48–57 publications: 35 scientists 58–67 publications: 96 scientists 68–77 publications: 135 scientists 78–87 publications: 190 scientists 88–97 publications: 259 scientists 98–107 publications: 283 scientists 108–117 publications: 369 scientists 118–127 publications: 341 scientists 128–137 publications: 386 scientists 138–147 publications: 372 scientists 148–157 publications: 457 scientists 158–167 publications: 415 scientists 168–177 publications: 407 scientists 178–187 publications: 421 scientists 188–197 publications: 378 scientists 198–207 publications: 403 scientists 208–217 publications: 317 scientists 218–227 publications: 346 scientists 228–237 publications: 321 scientists 238–247 publications: 260 scientists 248–257 publications: 280 scientists 258–267 publications: 240 scientists 268–277 publications: 214 scientists 278–287 publications: 242 scientists 288–297 publications: 203 scientists 298–307 publications: 166 scientists 308–317 publications: 154 scientists 318–327 publications: 175 scientists 328–337 publications: 159 scientists 338–347 publications: 99 scientists 348–357 publications: 131 scientists 358–367 publications: 106 scientists 368–377 publications: 118 scientists 378–387 publications: 97 scientists 388–397 publications: 108 scientists 398–407 publications: 82 scientists 408–417 publications: 71 scientists 418–427 publications: 64 scientists 428–437 publications: 55 scientists 438–447 publications: 54 scientists 448–457 publications: 60 scientists 458–467 publications: 47 scientists 468–477 publications: 40 scientists 478–487 publications: 30 scientists 488–497 publications: 29 scientists 498–507 publications: 38 scientists 508–517 publications: 40 scientists 518–527 publications: 32 scientists 528–537 publications: 23 scientists 538–547 publications: 28 scientists 548–557 publications: 23 scientists 558–567 publications: 19 scientists 568–577 publications: 16 scientists 578–587 publications: 17 scientists 588–597 publications: 18 scientists 598–607 publications: 22 scientists 608–617 publications: 15 scientists 618–627 publications: 9 scientists 628–637 publications: 11 scientists 638–647 publications: 21 scientists 648–657 publications: 12 scientists 658–667 publications: 9 scientists 668–677 publications: 11 scientists 678–687 publications: 9 scientists 688–697 publications: 6 scientists 698–707 publications: 14 scientists 708–717 publications: 7 scientists 718–727 publications: 8 scientists 728–737 publications: 10 scientists 738–747 publications: 9 scientists 748–757 publications: 5 scientists 758–767 publications: 5 scientists 768–777 publications: 11 scientists 778–787 publications: 7 scientists 788–797 publications: 2 scientists 798–803 publications: 4 scientists 804+ publications: 100 scientists
38 publications 804+

This scientist: 176 publications — 38th percentile

38% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 804 publications or more.

R.W. Tkach D-index placement in Engineering and Technology in 2026

The chart shows the D-index (discipline H-index) distribution of Engineering and Technology scientists ranked by Research.com in 2026. The highlighted bar marks where R.W. Tkach sits on this spectrum.

30 D-Index: 59 scientists 31 D-Index: 114 scientists 32 D-Index: 129 scientists 33 D-Index: 189 scientists 34 D-Index: 200 scientists 35 D-Index: 262 scientists 36 D-Index: 311 scientists 37 D-Index: 312 scientists 38 D-Index: 350 scientists 39 D-Index: 385 scientists 40 D-Index: 348 scientists 41 D-Index: 362 scientists 42 D-Index: 426 scientists 43 D-Index: 380 scientists 44 D-Index: 310 scientists 45 D-Index: 341 scientists 46 D-Index: 301 scientists 47 D-Index: 306 scientists 48 D-Index: 271 scientists 49 D-Index: 246 scientists 50 D-Index: 210 scientists 51 D-Index: 253 scientists 52 D-Index: 213 scientists 53 D-Index: 221 scientists 54 D-Index: 195 scientists 55 D-Index: 186 scientists 56 D-Index: 170 scientists 57 D-Index: 167 scientists 58 D-Index: 166 scientists 59 D-Index: 144 scientists 60 D-Index: 152 scientists 61 D-Index: 141 scientists 62 D-Index: 138 scientists 63 D-Index: 131 scientists 64 D-Index: 118 scientists 65 D-Index: 114 scientists 66 D-Index: 119 scientists 67 D-Index: 95 scientists 68 D-Index: 87 scientists 69 D-Index: 77 scientists 70 D-Index: 89 scientists 71 D-Index: 69 scientists 72 D-Index: 54 scientists 73 D-Index: 46 scientists 74 D-Index: 55 scientists 75 D-Index: 54 scientists 76 D-Index: 49 scientists 77 D-Index: 53 scientists 78 D-Index: 46 scientists 79 D-Index: 28 scientists 80 D-Index: 39 scientists 81 D-Index: 36 scientists 82 D-Index: 24 scientists 83 D-Index: 26 scientists 84 D-Index: 36 scientists 85 D-Index: 18 scientists 86 D-Index: 25 scientists 87 D-Index: 19 scientists 88 D-Index: 26 scientists 89 D-Index: 27 scientists 90 D-Index: 23 scientists 91 D-Index: 15 scientists 92 D-Index: 12 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 13 scientists 97 D-Index: 13 scientists 98 D-Index: 9 scientists 99 D-Index: 7 scientists 100 D-Index: 7 scientists 101 D-Index: 8 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 9 scientists 105 D-Index: 6 scientists 106 D-Index: 9 scientists 107+ D-Index: 99 scientists
30 D-Index 107+

This scientist: 46 D-Index — 49th percentile

49% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 107 D-Index or more.

Research.com Recognitions

  • 2013 - IEEE Alexander Graham Bell Medal “For contributions to the science and technology of optical communications enabling high-speed wavelength division multiplexing through the mitigation of the effects of fiber nonlinearity.”
  • 2009 - Member of the National Academy of Engineering For contributions to research and development of terabit/second optical-fiber communication systems and networks.
  • 2000 - IEEE Fellow For contributions to the understanding and mitigation of nonlinear effects in optical fibers, enabling significant advances in the capacity and performance of lightwave systems.

Overview

R.W. Tkach is affiliated with Nokia in the United States, contributing extensively to the field of engineering, particularly in electrical and electronic engineering. Their research spans advanced topics in optical network technologies, photonic communication systems, and fiber laser technologies, focusing on the interaction of lightwaves with optical fibers and communication systems.

The scientist's work covers various subfields and topics including:

  • Optical Network Technologies
  • Advanced Photonic Communication Systems
  • Advanced Fiber Laser Technologies
  • Photonic and Optical Devices
  • Advanced Fiber Optic Sensors
  • Advanced Optical Network Technologies

Tkach's recent publications highlight ongoing research in optical fiber communication. Notable papers include:

  • "Shaping lightwaves in time and frequency for optical fiber communication," 2022, Nature Communications
  • "On the Kurtosis of Modulation Formats for Characterizing the Nonlinear Fiber Propagation," 2022, Journal of Lightwave Technology
  • "Shaping Lightwaves in Time and Frequency for Optical Fiber Communication," 2021, Research Square
  • "Full C-Band WDM Transmission of Nonlinearity-Tolerant Probabilistically Shaped QAM over 2824-km Dispersion-Managed Fiber," 2020, arXiv (Cornell University)
  • "On the Kurtosis of Modulation Formats for Characterizing the Nonlinear Fiber Propagation," 2021, arXiv (Cornell University)

The main publication venues for their work include:

  • arXiv (Cornell University)
  • Nature Communications
  • Journal of Lightwave Technology
  • Research Square

Frequent co-authors collaborating with Tkach are:

  • Junho Cho
  • G. Raybon
  • Di Che
  • Ellsworth Burrows
  • Xi Chen

In recognition of their professional achievements, R.W. Tkach has received several honors including:

  • IEEE Alexander Graham Bell Medal (2013) for contributions to optical communications and mitigation of fiber nonlinearity effects
  • Member of the National Academy of Engineering (2009) for research in terabit/second optical-fiber communication systems and networks
  • IEEE Fellow (2000) for work on nonlinear effects in optical fibers and advances in lightwave system capacity and performance

Best Publications

  • Capacity Trends and Limits of Optical Communication Networks

    R. Essiambre;R. W. Tkach

  • Regimes of feedback effects in 1.5-µm distributed feedback lasers

    Unknown

  • Four-photon mixing and high-speed WDM systems

    R.W. Tkach;A.R. Chraplyvy;F. Forghieri;A.H. Gnauck

  • Issues for routing in the optical layer

    Unknown

  • Phase-conjugated twin waves for communication beyond the Kerr nonlinearity limit

    Xiang Liu;A. R. Chraplyvy;P. J. Winzer;R. W. Tkach

  • Free-space micromachined optical switches for optical networking

    L.Y. Lin;E.L. Goldstein;R.W. Tkach

  • Fading in lightwave systems due to polarization-mode dispersion

    C.D. Poole;R.W. Tkach;A.R. Chraplyvy;D.A. Fishman

  • Equalization in amplified WDM lightwave transmission systems

    A.R. Chraplyvy;J.A. Nagel;R.W. Tkach

  • WDM systems with unequally spaced channels

    F. Forghieri;R.W. Tkach;A.R. Chraplyvy

  • Reduction of four-wave mixing crosstalk in WDM systems using unequally spaced channels

    Unknown

  • Effect of fiber nonlinearity on long-distance transmission

    Unknown

  • Experimental Investigation of Inter-Modal Four-Wave Mixing in Few-Mode Fibers

    R. Essiambre;M. A. Mestre;R. Ryf;A. H. Gnauck

  • Spontaneous Brillouin scattering for single-mode optical-fibre characterisation

    R.W. Tkach;A.R. Chraplyvy;R.M. Derosier

  • Dependence of cross-phase modulation on channel number in fiber WDM systems

    D. Marcuse;A.R. Chraplyvy;R.W. Tkach

  • Fast power transients in WDM optical networks with cascaded EDFAs

    Y. Sun;A.K. Srivastava;J.L. Zyskind;J.W. Sulhoff

  • Chapter 8 – Fiber Nonlinearities and Their Impact on Transmission Systems

    Unknown

  • Phase modulation to amplitude modulation conversion of CW laser light in optical fibres

    A.R. Charaplyvy;R.W. Tkach;L.L. Buhl;R.C. Alferness

  • Improving the Nonlinear Tolerance of Polarization-Division-Multiplexed CO-OFDM in Long-Haul Fiber Transmission

    Xiang Liu;F. Buchali;R.W. Tkach

  • 1-Tb/s transmission experiment

    A.R. Chraplyvy;A.H. Gnauck;R.W. Tkach;J.L. Zyskind

  • Fast-link control protection of surviving channels in multiwavelength optical networks

    Srivastava;J.L. Zyskind;Y. Sun;J. Ellson

  • 8*10 Gb/s transmission through 280 km of dispersion-managed fiber

    A.R. Chraplyvy;A.H. Gnauck;R.W. Tkach;R.M. Derosier

  • Effect of modulation statistics on Raman crosstalk in WDM systems

    F. Forghieri;R.W. Tkach;A.R. Chraplyvy

  • High-Capacity Optical Transmission Systems

    A.H. Gnauck;R.W. Tkach;A.R. Chraplyvy;T. Li

  • What is the actual capacity of single-mode fibers in amplified lightwave systems?

    A.R. Chraplyvy;R.W. Tkach

  • M-ary pulse-position modulation and frequency-shift keying with additional polarization/phase modulation for high-sensitivity optical transmission

    Xiang Liu;S. Chandrasekhar;T. H. Wood;R. W. Tkach

  • Brillouin scattering in externally modulated lightwave AM-VSB CATV transmission systems

    X.P. Mao;G.E. Bodeep;R.W. Tkach;A.R. Chraplyvy

Frequent Co-Authors

Andrew R. Chraplyvy
Andrew R. Chraplyvy Nokia (United States)
Alan H. Gnauck
Alan H. Gnauck Nokia (United States)
Yun Chur Chung
Yun Chur Chung Korea Advanced Institute of Science and Technology
Sethumadhavan Chandrasekhar
Sethumadhavan Chandrasekhar Nokia (United States)
Xiang Liu
Xiang Liu Nanjing Tech University
Peter J. Winzer
Peter J. Winzer Nokia (United States)
Thomas Edward Darcie
Thomas Edward Darcie University of Victoria
Thomas H. Wood
Thomas H. Wood Alcatel Lucent (Germany)
Thomas L. Koch
Thomas L. Koch University of Arizona
Robert M. Jopson
Robert M. Jopson Nokia (United States)

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