World's Best Scientists 2026 revealed!
Takeshi Fujisawa

Takeshi Fujisawa

D-Index & Metrics

Electronics and Electrical Engineering

D-Index
32
Citations
3771
World Ranking
6382
National Ranking
275

Takeshi Fujisawa publication distribution in Electronics and Electrical Engineering in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Electronics and Electrical Engineering in 2026. The highlighted bar marks where Takeshi Fujisawa sits on this spectrum.

34–53 publications: 24 scientists 54–73 publications: 52 scientists 74–93 publications: 114 scientists 94–113 publications: 203 scientists 114–133 publications: 269 scientists 134–153 publications: 355 scientists 154–173 publications: 403 scientists 174–193 publications: 445 scientists 194–213 publications: 430 scientists 214–233 publications: 431 scientists 234–253 publications: 399 scientists 254–273 publications: 366 scientists 274–293 publications: 335 scientists 294–313 publications: 300 scientists 314–333 publications: 276 scientists 334–353 publications: 250 scientists 354–373 publications: 214 scientists 374–393 publications: 187 scientists 394–413 publications: 152 scientists 414–433 publications: 169 scientists 434–453 publications: 147 scientists 454–473 publications: 111 scientists 474–493 publications: 117 scientists 494–513 publications: 103 scientists 514–533 publications: 99 scientists 534–553 publications: 92 scientists 554–573 publications: 75 scientists 574–593 publications: 58 scientists 594–613 publications: 69 scientists 614–633 publications: 50 scientists 634–653 publications: 62 scientists 654–673 publications: 54 scientists 674–693 publications: 44 scientists 694–713 publications: 37 scientists 714–733 publications: 28 scientists 734–753 publications: 26 scientists 754–773 publications: 26 scientists 774–793 publications: 19 scientists 794–813 publications: 23 scientists 814–833 publications: 20 scientists 834–853 publications: 16 scientists 854–873 publications: 20 scientists 874–893 publications: 11 scientists 894–913 publications: 11 scientists 914–933 publications: 16 scientists 934–953 publications: 13 scientists 954–973 publications: 10 scientists 974–993 publications: 11 scientists 994–1,013 publications: 9 scientists 1,014–1,033 publications: 9 scientists 1,034–1,053 publications: 10 scientists 1,054–1,064 publications: 6 scientists 1,065+ publications: 99 scientists
34 publications 1,065+

This scientist: 338 publications — 65th percentile

65% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,065 publications or more.

Takeshi Fujisawa D-index placement in Electronics and Electrical Engineering in 2026

The chart shows the D-index (discipline H-index) distribution of Electronics and Electrical Engineering scientists ranked by Research.com in 2026. The highlighted bar marks where Takeshi Fujisawa sits on this spectrum.

30 D-Index: 178 scientists 31 D-Index: 257 scientists 32 D-Index: 263 scientists 33 D-Index: 262 scientists 34 D-Index: 244 scientists 35 D-Index: 236 scientists 36 D-Index: 211 scientists 37 D-Index: 220 scientists 38 D-Index: 214 scientists 39 D-Index: 214 scientists 40 D-Index: 205 scientists 41 D-Index: 187 scientists 42 D-Index: 194 scientists 43 D-Index: 201 scientists 44 D-Index: 155 scientists 45 D-Index: 189 scientists 46 D-Index: 148 scientists 47 D-Index: 160 scientists 48 D-Index: 134 scientists 49 D-Index: 130 scientists 50 D-Index: 141 scientists 51 D-Index: 156 scientists 52 D-Index: 108 scientists 53 D-Index: 130 scientists 54 D-Index: 112 scientists 55 D-Index: 97 scientists 56 D-Index: 111 scientists 57 D-Index: 102 scientists 58 D-Index: 108 scientists 59 D-Index: 120 scientists 60 D-Index: 103 scientists 61 D-Index: 93 scientists 62 D-Index: 92 scientists 63 D-Index: 74 scientists 64 D-Index: 77 scientists 65 D-Index: 73 scientists 66 D-Index: 64 scientists 67 D-Index: 69 scientists 68 D-Index: 60 scientists 69 D-Index: 39 scientists 70 D-Index: 57 scientists 71 D-Index: 59 scientists 72 D-Index: 46 scientists 73 D-Index: 49 scientists 74 D-Index: 38 scientists 75 D-Index: 35 scientists 76 D-Index: 32 scientists 77 D-Index: 35 scientists 78 D-Index: 31 scientists 79 D-Index: 22 scientists 80 D-Index: 34 scientists 81 D-Index: 31 scientists 82 D-Index: 34 scientists 83 D-Index: 23 scientists 84 D-Index: 18 scientists 85 D-Index: 30 scientists 86 D-Index: 19 scientists 87 D-Index: 19 scientists 88 D-Index: 20 scientists 89 D-Index: 8 scientists 90 D-Index: 17 scientists 91 D-Index: 7 scientists 92 D-Index: 14 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 12 scientists 97 D-Index: 10 scientists 98 D-Index: 10 scientists 99 D-Index: 12 scientists 100 D-Index: 16 scientists 101 D-Index: 5 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 8 scientists 105 D-Index: 9 scientists 106 D-Index: 13 scientists 107 D-Index: 4 scientists 108 D-Index: 5 scientists 109 D-Index: 10 scientists 110 D-Index: 8 scientists 111+ D-Index: 96 scientists
30 D-Index 111+

This scientist: 32 D-Index — 10th percentile

10% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 111 D-Index or more.

Best Publications

  • All-optical logic gates based on nonlinear slot-waveguide couplers

    Takeshi Fujisawa;Masanori Koshiba

  • Polarization-independent optical directional coupler based on slot waveguides

    Takeshi Fujisawa;Masanori Koshiba

  • Chromatic dispersion profile optimization of dual-concentric-core photonic crystal fibers for broadband dispersion compensation

    Takeshi Fujisawa;Kunimasa Saitoh;Keisuke Wada;Masanori Koshiba

  • 50-Gb/s Direct Modulation of a 1.3-μm InGaAlAs-Based DFB Laser With a Ridge Waveguide Structure

    W. Kobayashi;T. Ito;T. Yamanaka;T. Fujisawa

  • Design and Fabrication of 10-/40-Gb/s, Uncooled Electroabsorption Modulator Integrated DFB Laser With Butt-Joint Structure

    W. Kobayashi;M. Arai;T. Yamanaka;N. Fujiwara

  • Transmission of 214-Gbit/s 4-PAM signal using an ultra-broadband lumped-electrode EADFB laser module

    Shigeru Kanazawa;Hiroshi Yamazaki;Yasuhiko Nakanishi;Takeshi Fujisawa

  • Theoretical investigation of ultrasmall polarization-insensitive 1/spl times/2 multimode interference waveguides based on sandwiched structures

    T. Fujisawa;M. Koshiba

  • 2.33- $\mu$ m-Wavelength Distributed Feedback Lasers With InAs–In $_{0.53}$ Ga $_{0.47}$ As Multiple-Quantum Wells on InP Substrates

    T. Sato;M. Mitsuhara;N. Nunoya;T. Fujisawa

  • Low-loss, compact, and fabrication-tolerant Si-wire 90° waveguide bend using clothoid and normal curves for large scale photonic integrated circuits

    Takeshi Fujisawa;Shuntaro Makino;Takanori Sato;Kunimasa Saitoh

  • 1.3- $\mu$ m 4 $\, imes\,$ 25-Gb/s Monolithically Integrated Light Source for Metro Area 100-Gb/s Ethernet

    T Fujisawa;S Kanazawa;H Ishii;N Nunoya

  • Time-domain beam propagation method for nonlinear optical propagation analysis and its application to photonic Crystal circuits

    T. Fujisawa;M. Koshiba

  • 25 Gbit/s 1.3 μm InGaAlAs-based electroabsorption modulator integrated with DFB laser for metro-area (40 km) 100 Gbit/s Ethernet system

    T. Fujisawa;M. Arai;N. Fujiwara;W. Kobayashi

  • 13-μm, 4 × 25-Gbit/s, EADFB laser array module with large-output-power and low-driving-voltage for energy-efficient 100GbE transmitter

    Unknown

  • Guided modes of nonlinear slot waveguides

    T. Fujisawa;M. Koshiba

  • A Compact EADFB Laser Array Module for a Future 100-Gb/s Ethernet Transceiver

    S. Kanazawa;T. Fujisawa;A. Ohki;H. Ishii

  • PLC-based mode multi/demultiplexers for mode division multiplexing

    Kunimasa Saitoh;Nobutomo Hanzawa;Taiji Sakamoto;Takeshi Fujisawa

  • Design and analysis of a broadband dispersion compensating photonic crystal fiber Raman amplifier operating in S-band

    Shailendra K. Varshney;Takeshi Fujisawa;Kunimasa Saitoh;Masanori Koshiba

  • Numerical investigation and optimization of a photonic crystal fiber for simultaneous dispersion compensation over S + C + L wavelength bands

    S.K. Varshney;N.J. Florous;K. Saitoh;M. Koshiba

  • Novel design of inherently gain-flattened discrete highly nonlinear photonic crystal fiber Raman amplifier and dispersion compensation using a single pump in C-band.

    Shailendra K. Varshney;Takeshi Fujisawa;Kunimasa Saitoh;Masanori Koshiba

  • Finite-element modeling of nonlinear Mach-Zehnder interferometers based on photonic-crystal waveguides for all-optical signal processing

    T. Fujisawa;M. Koshiba

Frequent Co-Authors

Kunimasa Saitoh
Kunimasa Saitoh Hokkaido University
Masanori Koshiba
Masanori Koshiba Hokkaido University
Katsuhiro Takenaga
Katsuhiro Takenaga Fujikura (United States)
Hiroyuki Ishii
Hiroyuki Ishii NTT (Japan)
Shoichiro Matsuo
Shoichiro Matsuo Fujikura (Japan)
Hiroyuki Ishii
Hiroyuki Ishii Waseda University
Katsumi Yoshino
Katsumi Yoshino Osaka University
Akihiko Fujii
Akihiko Fujii Osaka Institute of Technology
Masanori Koshiba
Masanori Koshiba Hokkaido University

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Related Online Degrees & Career Pathways

For students exploring Electronics and Electrical Engineering, online education offers flexible options to advance their careers. Programs such as an online masters in instructional design can complement technical knowledge by enhancing skills in educational technology and curriculum development. This interdisciplinary approach is valuable for professionals aiming to train others or lead technical teams.

Many institutions now offer competency-based online colleges that allow students to progress at their own pace by demonstrating mastery of key concepts. This model benefits working engineers or those balancing study with practical experience, making degree completion more efficient.

Support for military spouses and dependents is also growing, with several online universities for military spouses designed to accommodate relocations and demanding schedules. These programs ensure continuity in education, which is crucial for career advancement within technical fields.

For those ready to begin their studies on short notice, online colleges starting soon offer frequent enrollment opportunities. This flexibility can help aspiring engineers enter programs without delay, accelerating their path to certification or advanced degrees.

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