Publications List
Last updated: Jan. 21, 2014

Publications List



[1] Frequently cited papers


Total times cited= 1045 / Total 49 journal papers,
being supported by NEC Corporation (1987-2002) and National University of Electro-Communications (2002-present).

Average times cited= 21.3 / journal paper.

as of December 2012, according to the Thomson Corporation ISI Web of Knowledge.



List of frequently cited papers which were authored or co-authored by Yoshiyasu Ueno (from the very recent one through the oldest one):
  1. Jun Sakaguchi, Ferran Salleras, Kohsuke Nishimura, and Yoshiyasu Ueno, "Frequency-dependent electric dc power consumption model including quantum-conversion efficiencies in ultrafast all-optical semiconductor gates," Optics Express vol. 15, no. 22, pp. 14887-14900, Oct. 2007. abstract , full text
    times cited= 6
  2. M.L. Nielsen, J. Mørk, R. Suzuki, J. Sakaguchi, and Y. Ueno, "Experimental and theoretical investigation of the impact of ultra-fast carrier dynamics on high-speed SOA-based all-optical switches," Optics Express, vol. 14, no. 1, pp. 331-347, Jan. 2006. abstract , full text
    times cited= 47
  3. J. Sakaguchi, M.L. Nielsen, T. Ohira, R. Suzuki, and Y. Ueno, 'Observation of small sub-pulses out of the delayed-interference signal-wavelength converter,' Jpn. J. Appl. Phys vol. 44, no. 44, pp. L1358-1360, Oct. 2005. abstract , full text
    times cited= 6
  4. Y. Ueno, S. Nakamura, and K. Tajima, 'Nonlinear phase shifts induced by semiconductor optical amplifiers with control pulses at repetition frequencies in the 40-160 GHz range for use in ultrahigh-speed all-optical signal processing,' J. Opt. Soc. Am. vol. B19, no. 11, pp. 2573-2589, Nov. 2002. online abstract , full text
    times cited= 70
  5. S. Nakamura, Y. Ueno, and K. Tajima, '168-Gbit/s all-optical wavelength conversion with a symmetric-Mach-Zehnder-type switch,' IEEE Photonics Technol. Lett., vol. 13, no. 10, pp. 1091-1093, Oct. 2001. online abstract , full text
    times cited= 109
  6. S. Nakamura, Y. Ueno, and K. Tajima, 'Femtosecond switching with semiconductor-optical-amplifier-based Symmetric-Mach-Zehnder-type all-optical switch,' Appl. Phys. Lett. vol. 78, no. 25, pp. 3929-3931, June 2001. online abstract , , full text
    times cited= 34
  7. Y. Ueno, S. Nakamura, and K. Tajima, 'Penalty-free error-free all-optical data pulse regeneration at 84 Gb/s by using a Symmetric-Mach-Zehnder-type semiconductor regenerator,' IEEE Photonics Technol. Lett. vol. 13, no. 5, pp. 469-471, May 2001. online abstract , full text
    times cited= 77
  8. S. Nakamura, Y. Ueno, K. Tajima, J. Sasaki, T. Sugimoto, T. Kato, T. Shimoda, M. Itoh, H. Hatakeyama, T. Tamanuki, and T. Sasaki, "Demultiplexing of 168-Gb/s data pulses with a hybrid-integrated symmetric Mach-Zehnder all-optical switch,' IEEE Photonics Technol. Lett. vol. 12, No. 4, pp.425-427, April 2000. online abstract
    times cited= 95
  9. S. Nakamura, Y. Ueno, and K. Tajima, "Ultrafast (200-fs switching, 1.5-Tb/s demultiplexing) and high-repetition (10 GHz) operations of a polarization-discriminating symmetric Mach-Zehnder all-optical switch," IEEE Photonics Technol. Lett. vol. 10, no. 11, pp. 1575-1577, Nov. 1998. online abstract
    times cited= 57
  10. Y. Ueno, S. Nakamura, and K. Tajima, "Record low-power all-optical semiconductor switch operation at ultrafast repetition rates above the carrier cutoff frequency," Opt. Lett. vol. 23, no. 23, pp. 1846-1848, Dec. 1998. online abstract , full text
    times cited= 26
  11. Y. Ueno, S. Nakamura, K. Tajima, and S. Kitamura, "3.8-THz wavelength conversion of picosecond pulses using a semiconductor delayed-interference signal-wavelength converter (DISC)," IEEE Photonics Technol. Lett. vol. 10, no. 3, pp. 346-348, March 1998. online abstract , full text
    times cited= 101
  12. Y. Ueno, V. Ricci, and G. I. Stegeman, "Second-order susceptibility of Ga0.5In0.5P crystals at 1.5 um and their feasibility for waveguide quasi-phase-matching," J. Opt. Soc. Am. B. vol. 14, no. 6, pp. 1428-1436, June 1997. online abstract , full text
    times cited= 5
  13. Y. Ueno, "Oscillator strength enhancement for [110]-polarized light in compressively strained GaInP ordered crystals used in AlGaInP lasers," Appl. Phys. Lett. vol. 62, no. 6, pp. 553-555, Feb. 1993. online abstract , full text
    times cited= 21
  14. Y. Ueno, H. Fujii, H. Sawano, K. Kobayashi, K. Hara, A. Gomyo, and K. Endo, "30-mW 690-nm high-power strained-quantum-well AlGaInP Laser," IEEE J. Quantum Electron. vol. 29, no. 6, pp. 1851-1856, June 1993. online abstract , full text
    times cited= 14
  15. Y. Ueno, K. Endo, H. Fujii, K. Kobayashi, K. Hara, and T. Yuasa, "Continuous-wave high-power (75 mW) operation of a transverse-mode stabilised window-structure 680 nm AlGaInP visible laser diode," Electron. Lett. vol. 26, no. 20, pp. 1726-1727, Sept. 1990. online abstract , full text
    times cited= 27
  16. K. Kobayashi, Y. Ueno, H. Hotta, A. Gomyo, K. Tada, K. Hara, and T. Yuasa, "632.7nm CW operation of AlGaInP visible laser diodes fabricated on (001) 6-degree-off toward [110] GaAs substrate," Jpn. J. Appl. Phys. vol. 29, no. 9, L1669-1671, Sept. 1990. online abstract , full text
    times cited= 42
  17. Y. Ueno, H. Fujii, K. Kobayashi, K. Endo, A. Gomyo, K. Hara, S. Kawata, T. Yuasa, and T. Suzuki, "Novel window-structure AlGaInP visible-light laser diodes with non-absorbing facets fabricated by utilizing GaInP natural superlattice disordering," Jpn. J. Appl. Phys. vol. 29, no. 9, pp. L1666-L1668, Sept. 1990. online abstract , full text
    times cited= 44

[2] Journal Papers

  1. M. Kuwata, Y. Ueno, and N. Nagasawa, "Resonant Raman scattering in red-HgI2 by polarization modulation spectroscopy with piezo-birefringent modulator," J. Luminescence vol. 40&41, pp. 613-614, 1988. online abstract
  2. A. Gomyo, T. Suzuki, S. Iijima, H. Hotta, H. Fujii, S. Kawata, K. Kobayashi, Y. Ueno, and I. Hino, "Nonexistence of long-range order in Ga0.5In0.5P epitaxial layers grown on (111)B and (110) GaAs substrates," Jpn. J. Appl. Phys. vol. 27, no. 12, pp. L2370-L2372, Dec. 1988. online abstract
  3. Y. Ueno, H. Fujii, K. Kobayashi, K. Endo, A. Gomyo, K. Hara, S. Kawata, T. Yuasa, and T. Suzuki, "Novel window-structure AlGaInP visible-light laser diodes with non-absorbing facets fabricated by utilizing GaInP natural superlattice disordering," Jpn. J. Appl. Phys. vol. 29, no. 9, pp. L1666-L1668, Sept. 1990. online abstract , full text
  4. K. Kobayashi, Y. Ueno, H. Hotta, A. Gomyo, K. Tada, K. Hara, and T. Yuasa, "632.7nm CW operation of AlGaInP visible laser diodes fabricated on (001) 6-degree-off toward [110] GaAs substrate," Jpn. J. Appl. Phys. vol. 29, no. 9, L1669-1671, Sept. 1990. online abstract , full text
  5. Y. Ueno, K. Endo, H. Fujii, K. Kobayashi, K. Hara, and T. Yuasa, "Continuous-wave high-power (75 mW) operation of a transverse-mode stabilised window-structure 680 nm AlGaInP visible laser diode," Electron. Lett. vol. 26, no. 20, pp. 1726-1727, Sept. 1990. online abstract , full text
  6. Y. Ueno, H. Fujii, H. Sawano, and K. Endo, "Stable 30 mW operation at 50C for strained MQW AlGaInP visible laser diodes," Electron. Lett. vol. 28, no. 9, pp. 860-861, April 1992. online abstract
  7. Y. Ueno, H. Fujii, H. Sawano, K. Kobayashi, K. Hara, A. Gomyo, and K. Endo, "30-mW 690-nm high-power strained-quantum-well AlGaInP Laser," IEEE J. Quantum Electron. vol. 29, no. 6, pp. 1851-1856, June 1993. online abstract , full text
  8. H. Fujii, Y. Ueno, A. Gomyo, K. Endo, and T. Suzuki, "Observation of stripe-direction dependence of threshold current density for AlGaInP laser diodes with CuPt-type natural superlattice in Ga0.5In0.5P active layer," Appl. Phys. Lett. vol. 61, no. 7, pp. 737-739, August 1992. online abstract
  9. H. Fujii, Y. Ueno, and K. Endo, "Effect of thermal resistivity on the catastrophic optical damage power density of AlGaInP laser diodes," Appl. Phys. Lett. vol. 62, no. 17, pp. 2114-2115, April 1993. online abstract
  10. Y. Ueno, "Oscillator strength enhancement for [110]-polarized light in compressively strained GaInP ordered crystals used in AlGaInP lasers," Appl. Phys. Lett. vol. 62, no. 6, pp. 553-555, Feb. 1993. online abstract , full text
  11. K. Endo, K. Kobayashi, H. Fujii, and Y. Ueno, "Accelerated aging for AlGaInP visible laser diodes," Appl. Phys. Lett. vol. 64, no. 2, pp. 146-148, Jan. 1994. online abstract ,
  12. Y. Ueno, "Low-loss Bragg-reflector fundamental-transverse-mode confinement in AlGaInP red laser," IEEE J. Quantum Electron. vol. 30, no. 10, pp. 2239-2244, Oct. 1994. online abstract , full text
  13. Y. Ueno, "Increased catastrophic-optical-damage output power for high-power semiconductor lasers coated with high-refractive-index films," Jpn. J. Appl. Phys. vol. 37, part 2, no. 6A, pp. L646-L648, June 1998. online abstract , full text
  14. Y. Ueno, V. Ricci, and G. I. Stegeman, "Second-order susceptibility of Ga0.5In0.5P crystals at 1.5 um and their feasibility for waveguide quasi-phase-matching," J. Opt. Soc. Am. B. vol. 14, no. 6, pp. 1428-1436, June 1997. online abstract , full text
  15. Y. Ueno, G. I. Stegeman, and K. Tajima, "Large phase shifts due to the chi(2) cascading nonlinearity in large walk-off and loss regimes in semiconductors and other dispersive materials," Jpn. J. Appl. Phys. vol. 36, no. 5B, pp. L613-615, May 1997. online abstract , full text
  16. K. Tajima, S. Nakamura, and Y. Ueno, "Femtosecond all-optical switching using efficient incoherent nonlinearity with slow relaxation," Material Science and Engineering vol. B48, pp. 88-93, 1997.
  17. Y. Ueno, S. Nakamura, K. Tajima, and S. Kitamura, "3.8-THz wavelength conversion of picosecond pulses using a semiconductor delayed-interference signal-wavelength converter (DISC)," IEEE Photonics Technol. Lett. vol. 10, no. 3, pp. 346-348, March 1998. online abstract , full text
  18. Y. Ueno, S. Nakamura, and K. Tajima, "Record low-power all-optical semiconductor switch operation at ultrafast repetition rates above the carrier cutoff frequency," Opt. Lett. vol. 23, no. 23, pp. 1846-1848, Dec. 1998. online abstract , full text
  19. S. Nakamura, Y. Ueno, and K. Tajima, "Ultrafast (200-fs switching, 1.5-Tb/s demultiplexing) and high-repetition (10 GHz) operations of a polarization-discriminating symmetric Mach-Zehnder all-optical switch," IEEE Photonics Technol. Lett. vol. 10, no. 11, pp. 1575-1577, Nov. 1998. online abstract
  20. S. Nakamura, Y. Ueno, and K. Tajima, 'Femtosecond operation of a polarization-discriminating symmetric Mach-Zehnder all-optical switch and improvement in its high-repetition operation,' IEICE Trans. Electron. vol. E82-C, no. 2, pp. 327-334, Feb. 1999.
  21. Y. Ueno, S. Nakamura, and K. Tajima, "Spectral phase-locking in ultrafast all-optical Mach-Zehnder-type semiconductor wavelength converters," Jpn. J. Appl. Phys. vol. 38, part 2, no. 11A, pp. L1243-1245, Nov. 1999. online abstract , full text
  22. K. Tajima, S. Nakamura, Y. Ueno, J. Sasaki, T. Sugimoto, T. Kato, T. Shimoda, M. Itoh, H. Hatakeyama, T. Tamanuki, and T. Sasaki, "Hybrid integrated symmetric Mach-Zehnder all-optical switch and its ultarafast, high extinction switching," Electron. Lett. vol. 35, No. 23, pp.2030-2031, Nov. 1999. online abstract
  23. S. Nakamura, Y. Ueno, K. Tajima, J. Sasaki, T. Sugimoto, T. Kato, T. Shimoda, M. Itoh, H. Hatakeyama, T. Tamanuki, and T. Sasaki, "Demultiplexing of 168-Gb/s data pulses with a hybrid-integrated symmetric Mach-Zehnder all-optical switch," IEEE Photonics Technol. Lett. vol. 12, No. 4, pp.425-427, April 2000. online abstract
  24. K. Tajima, S. Nakamura, Y. Ueno, J. Sasaki, T. Sugimoto, T. Kato, T. Shimoda, H. Hatakeyama, T. Tamanuki, and T. Sasaki, 'Ultrafast hybrid-integrated symmetric Mach-Zehnder all-optical switch and its 168 Gbps error-free demultiplexing operation,' IEICE Trans. Electron. vol. E83-C, no. 6, pp. 959-965, April 2000.
  25. Y. Ueno, S. Nakamura, and K. Tajima, "Ultrafast 168-GHz 1.5-ps 1-fJ Symmetric-Mach-Zehnder-type all-optical semiconductor switch," Jpn. J. Appl. Phys. vol. 39, part 2, no. 8A, pp. L806-808, August 2000. online abstract , full text
  26. Y. Ueno, S. Nakamura, and K. Tajima, "All-optical divided-clock extractor using an ultrafast all-optical symmetric-Mach-Zehnder-type semiconductor switch embedded in an optical loop," Jpn. J. Appl. Phys. vol. 39, part 2, no. 8A, pp. L803-805, August 2000. online abstract , full text
  27. Y. Ueno, S. Nakamura, and K. Tajima, "Penalty-free error-free all-optical data pulse regeneration at 84 Gb/s by using a Symmetric-Mach-Zehnder-type semiconductor regenerator," IEEE Photonics Technol. Lett. vol. 13, no. 5, pp. 469-471, May 2001. online abstract , full text
  28. S. Nakamura, Y. Ueno, and K. Tajima, "Femtosecond switching with semiconductor-optical-amplifier-based Symmetric-Mach-Zehnder-type all-optical switch," Appl. Phys. Lett. vol. 78, no. 25, pp. 3929-3931, June 2001. online abstract , full text
  29. K. Tajima, S. Nakamura, and Y. Ueno, "Symmetric Mach-Zehnder type all-optical switches and ultrafast all-optical signal processing," Transactions of the Institute of Electronics, Information and Communication Engineers C, vol. J84-C, no.6, pp.435-450, June 2001.
  30. K. Tajima, S. Nakamura, and Y. Ueno, "Ultrafast all-optical signal processing with symmetric-Mach-Zehnder-type all-optical switches," Optical and Quantum Electronics, vol. 33, pp. 875-897, 2001.
  31. S. Nakamura, Y. Ueno, and K. Tajima, "168-Gbit/s all-optical wavelength conversion with a symmetric-Mach-Zehnder-type switch," IEEE Photonics Technol. Lett., vol. 13, no. 10, pp. 1091-1093, Oct. 2001. online abstract , full text
  32. Y. Ueno, S. Nakamura, and K. Tajima, "5-ps, 10-GHz pulse generation from an all-optical semiconductor switch embedded in a ring cavity," Appl. Phys. Lett., vol. 79, no. 16, pp. 2520-2522, Oct. 2001. online abstract , full text
  33. Akira Hasegawa, Hiroyuki Toda, Makoto Shikata, Yukihiro Ozeki, Tetsuyuki Suzaki, Yoshiyasu Ueno, and Kazuhito Tajima, "Experimental demonstration of the compressed optical packet multiplexing scheme," J. Opt. Networking, vol. 1, no. 7, pp. 221-236, July 2002. online abstract, full text
  34. K. Tajima, S. Nakamura, and Y. Ueno, "Symmetric Mach-Zehnder type all-optical switches and ultrafast all-optical signal processing," Electronics and Communications in Japan, part 2, vol. 85, no. 2, pp. 1-17, 2002.
  35. K. Tajima, S. Nakamura, and Y. Ueno, "Semiconductor nonlinearities for ultrafast all-optical gating," Meas. Sci. and Technol. vol. 13, pp. 1692-1697, Oct. 2002.
  36. Y. Ueno, M. Takahashi, S. Nakamura, K. Suzuki, T. Shimizu, A. Furukawa, T. Tamanuki, K. Mori, T. Ae, T. Sasaki, and K. Tajima, "Control scheme for optimizing the interferometer phase bias in Symmetric-Mach-Zehnder-type all-optical switch," IEEE Photonics Technol. Lett., vol. 14, no. 12, pp. 1692-1694, Dec. 2002. online abstract , full text
  37. Y. Ueno, S. Nakamura, and K. Tajima, "Nonlinear phase shifts induced by semiconductor optical amplifiers with control pulses at repetition frequencies in the 40-160 GHz range for use in ultrahigh-speed all-optical signal processing," J. Opt. Soc. Am. vol. B19, no. 11, pp. 2573-2589, Nov. 2002. online abstract , full text
  38. Y. Ueno, M. Takahashi, S. Nakamura, K. Suzuki, T. Shimizu, A. Furukawa, T. Tamanuki, K. Mori, T. Ae, T. Sasaki, and K. Tajima, "Control scheme for optimizing the interferometer phase bias in the Symmetric-Mach-Zehnder all-optical switch (OECC-awarded invited paper)," Joint Special Issue on Recent Progress in Optoelectronics and Communications, IEICE Trans. Electron. Vol. E86-C, no. 5, pp. 731-740, May 2003. online abstract, full text
    .
    --- from here: technical papers from the Univ. of Electro-Communications, Tokyo, Japan ---

  39. Y. Ueno, "Theoretically predicted performance and frequency-scaling rule of a Symmetric-Mach-Zehnder optical 3R gating," Opt. Comm. vol. 229, pp. 253-261, Jan. 2004. online abstract , full text
  40. Y. Ueno, "Theoretically predicted nonlinear phase imbalance for delayed-interference signal-wavelength convertors (DISC)," Jpn. J. Appl. Phys. vol. 43, no. 5B, pp. L665-L668, May 2004. online abstract , full text
  41. J. Sakaguchi, M.L. Nielsen, T. Ohira, R. Suzuki, and Y. Ueno, "Observation of small sub-pulses out of the delayed-interference signal-wavelength converter," Jpn. J. Appl. Phys vol. 44, no. 44, pp. L1358-1360, Oct. 2005. abstract , full text
  42. M.L. Nielsen, J. Mørk, R. Suzuki, J. Sakaguchi, and Y. Ueno, "Theoretical and experimental study of fundamental differences in the noise suppression of high-speed SOA-based all-optical switches," Optics Express vol. 13, no. 13, pp. 5080-5086, June 2005. abstract , full text
  43. M.L. Nielsen, J. Mørk, R. Suzuki, J. Sakaguchi, and Y. Ueno, "Experimental and theoretical investigation of the impact of ultra-fast carrier dynamics on high-speed SOA-based all-optical switches," Optics Express, vol. 14, no. 1, pp. 331-347, Jan. 2006. abstract , full text
  44. Y. Ueno, M. Toyoda, R. Suzuki, and Y. Nagasue, "Modeling of the polarization-discriminating-symmetric-Mach-Zehnder-type optical-3R gate scheme and its available degree of random-amplitude-noise suppression," Optics Express, vol. 14, no. 1, pp. 348-360, Jan. 2006. abstract , full text
  45. Y. Ueno, R. Nakamoto, J. Sakaguchi, and R. Suzuki, "Optical-spectrum-synthesizer design within an all-optical semiconductor gate to reduce waveform distortion induced by carrier-cooling relaxation at sub-Teraherz frequencies," Optics Express vol. 14, no. 26, pp. 12655-12664, Dec 25, 2006. abstract , full text
  46. Ferran Salleras, Masanori Honma, Jun Sakaguchi, Yoshiyasu Ueno, Nobuhiko Ozaki, Yoshinori Kitagawa, Kiyoshi Asakawa, Naoki Ikeda, Yoshimasa Sugimoto, "Criterion for avoiding a delayed peak from the ultrafast nonlinear response of photonic crystal/quantum dot waveguides," submitted to Appl. Phys. Lett.
  47. Jun Sakaguchi, Ferran Salleras, Kohsuke Nishimura, and Yoshiyasu Ueno, "Frequency-dependent electric dc power consumption model including quantum-conversion efficiencies in ultrafast all-optical semiconductor gates," Optics Express vol. 15, no. 22, pp. 14887-14900, Oct. 2007. abstract , full text
  48. Jun Sakaguchi, Mads L. Nielsen, Takashi Ohira, Rei Suzuki, and Yoshiyasu Ueno, "Analysis of sub-pulse generation from the delayed-interference signal-wavelength converter for a wide carrier recovery rate range," Jpn. J. Appl. Phys. vol. 47, no. 9, pp. 7182-7189, Sept. 2008. abstract , full text
  49. New! Jun Sakaguchi, Takehiro Nishida, and Yoshiyasu Ueno, "200-Gb/s wavelength conversion using a delayed-interference all-optical semiconductor gate assisted by nonlinear polarization rotation," Optics Communications vol. 282, no. 9, pp. 1728-1733, May 2009. abstract , full text

[3] Conference Papers

  1. Y. Ueno, H. Fujii, K. Kobayashi, K. Endo, A. Gomyo, K. Hara, S. Kawata, T. Yuasa, and T. Suzuki, "Novel window-structure AlGaInP visible LDs with non-absorbing facets formed by disordering of natural superlattice in GaInP active layer," 12th IEEE international semiconductor laser conference, Sept. 9-14, 1990, Davos, Switzerland, paper C-2, pp. 30-31. online abstract
  2. T. Suzuki, Y. Ueno, H. Fujii, K. Kobayashi, and K. Endo, "High-power visible laser diodes (Invited)," Conference on Lasers and Electro-Optics (CLEO '91), Baltimore, May 12-17, 1991, paper CTuF3, pp. 94-95.
  3. Y. Ueno, H. Fujii, H. Sawano, K. Endo, K. Kobayashi, and K. Hara, "30 mW 690 nm high-power strained-quantum-well AlGaInP laser with Al2O3-coated mirror facets," 13th IEEE international semiconductor laser conference, Takamatsu, Sept. 21-25, 1992, paper D-28, pp. 90-91. online abstract
  4. H. Fujii, Y. Ueno, A. Gomyo, K. Endo, and T. Suzuki, "Observation of stripe-direction dependence of threshold current density for AlGaInP laser diodes with CuPt-type natural superlattice in Ga0.5In0.5P active layer," 50th annual device research conference (DRC), Boston, 1992, paper IVB-5.
  5. K. Tada, H. Hotta, K. Hara, H. Sawano, Y. Ueno, and K. Kobayashi, 'High temperature operating characteristics of 680 nm AlGaInP lasers with asymmetric waveguiding structure,' 5th Optoelectronics conference (OEC '94), Chiba, July 1994, 14D2-5.
  6. F. Miyasaka, H. Hotta, Y. Ueno, H. Sawano, K. Kobayashi, M. Yamamoto, M. Tsuji, K. Makita, T. Nyu, and S. Yamazaki, 'High-speed light sources and detectors for giga-bit per second plastic optical fiber transmission,' Optical Fiber Communication Conference (OFC '95), San Diego, Feb. 26-March 3, 1995, ThG6.
  7. Y. Ueno, V. Ricci, and G. I. Stegeman, "Phase-matchable second-order susceptibility of GaInP crystals at 1.5-um," 7th Topical Meeting of the European Optical Society, Val Thorens, France, January 14-18, 1996, pp. 185-186.
  8. V. Ricci, Y. Ueno, and G. I. Stegeman, "Measurement of the second-order susceptibility of GaInP films at 1.5 um," Quantum Electronics and Laser Science Conference (QELS '96), June 2-7, 1996, Anaheim, California, QME4, pp. 21-22. online abstract
  9. Y. Ueno, G. I. Stegeman, and K. Tajima, "Large Phase Shifts due to the chi(2) cascading nonlinearity in large walk-off regimes in semiconductor and other dispersive materials," Quantum Electronics and Laser Science Conference (QELS'97), Baltimore, May 18-23, 1997, QThL4, pp. 203-204. online abstract
  10. Y. Ueno, S. Nakamura, K. Tajima, and S. Ishikawa, "Effect of spectral hole burning on symmetric Mach-Zehnder all-optical switch," 4th Int. Workshop on Femtosecond Technology (FST '97), Feb. 13-14, 1997, Tsukuba, Japan, p. 108.
  11. S. Nakamura, Y. Ueno, and K. Tajima, "Femtosecond switching capability of symmetric Mach-Zehnder all-optical switch," 4th International Workshop on Femtosecond Technology (FST '97), Feb. 13-14, 1997, Tsukuba, p. 107.
  12. K. Tajima, S. Nakamura, and Y. Ueno, "Ultrafast all-optical devices with switching speed unrestricted by highly efficient but slow incoherent nonlinearities," Int. Symposium on Nonlinear Theory & its Applications, Nov. 29-Dec. 3, 1997, Hawaii.
  13. Y. Ueno, S. Nakamura, K. Tajima, and S. Kitamura, "New wavelength converter for picosecond RZ pulses," 24th European Conference on Optical Communication (ECOC '98), Madrid, Spain, Sept. 20-24, 1998, pp. 657-658. online abstract , full text
  14. S. Nakamura, Y. Ueno, and K. Tajima, "Ultrafast (200 fs) and high-repetition (10 GHz) operations of a polarization-discriminating symmetric Mach-Zehnder all-optical switch," 3rd Optoelectronics and Communications Conference (OECC '98), Makuhari, Chiba, July 1998, 15B2-2, pp. 344-345.
  15. S. Nakamura, Y. Ueno, and K. Tajima, "Ultrafast (200 fs) and high-repetition (10 GHz) operations of symmetric Mach-Zehnder all-optical switch," 5th International Workshop on Femtosecond Technology (FST '98), Tsukuba, Feb. 1998, p. 64.
  16. S. Nakamura, Y. Ueno, and K. Tajima, "Ultrafast all-optical switching based on frequency shift accompanied by the semiconductor band-filling effect," IEEE Lasers and Electro-Optics Annual Meeting (LEOS '98), Orlando, Dec. 1998, WB4.
  17. Y. Ueno, S. Nakamura, and K. Tajima, "Symmetric-Mach-Zehnder all-optical semiconductor switch operation at 42-GHz repetition rate above the carrier's cutoff frequency," 6th International Workshop on Femtosecond Technology (FST '99), July 13-15, 1999, Makuhari, Chiba, WC-33, p. 93.
  18. K. Tajima, S. Nakamura, Y. Ueno, J. Sasaki, T. Sugimoto, T. Kato, T. Shimoda, H. Hatakeyama, T. Tamanuki, and T. Sasaki, "Photonically integrated ultrafast symmetric Mach-Zehnder all-optical switch using planer lightwave circuit technology," 6th International Workshop on Femtosecond Technology (FST '99), July 1999, Makuhari, Chiba, WC-32, p. 92.
  19. S. Nakamura, Y. Ueno, and K. Tajima, 'Femtosecond switching with semiconductor optical amplifier-based symmetric Mach-Zehnder all-optical switch,' 6th International Workshop on Femtosecond Technology (FST '99), July 1999, Makuhari, Chiba, WB-4, p. 43.
  20. S. Nakamura, Y. Ueno, K. Tajima, J. Sasaki, T. Sugimoto, T. Kato, T. Shimoda, M. Itoh, H. Hatakeyama, T. Tamanuki, and T. Sasaki, "168 Gbps error-free demultiplexing with a hybrid-integrated symmetric Mach-Zehnder all-optical switch," Optical Fiber Communication Conference (OFC 2000), Baltimore, March 5-10, 2000, ThF3.
  21. Y. Ueno, S. Nakamura, H. Hatakeyama, T. Tamanuki, T. Sasaki, and K. Tajima, "168-Gb/s 1.5-ps logic operation of an all-optical SMZ-type switch," 7th International Workshop on Femtosecond Technology (FST 2000), Tsukuba, Japan, June 29-30, 2000, TC-1, p. 95.
  22. S. Nakamura, Y. Ueno, and K. Tajima, "Error-free 168-Gbps demultiplexing with a hybrid-integrated Symmetric Mach-Zehnder all-optical switch," 7th International Workshop on Femtosecond Technology (FST 2000), June 2000, Tsukuba, TB5, p. 40.
  23. S. Nakamura, Y. Ueno, and K. Tajima, "Error-free all-optical data pulse regeneration at 84 Gbps and wavelength conversion at 168 Gbps with symmetric Mach-Zehnder all-optical switches," Optical Amplifiers and their Applications (OAA 2000), Quebec City, July 9-12, 2000, PD4-1.
  24. S. Nakamura, Y. Ueno, and K. Tajima, "Ultra-high-speed all-optical switching using semiconductor optical amplifiers (Invited)," Optical Amplifiers and Their Applications (OAA 2000), Quebec City, July 9-12, 2000, OWB2.
  25. K. Tajima, S. Nakamura, and Y. Ueno, "Error-free all-optical signal regeneration and wavelength conversion at 84Gbps using Symmetric Mach-Zehnder all-optical switches," 5th Optoelectronics and Communications Conference (OECC 2000), Makuhari, Chiba, July 2000, paper PD2-6.
  26. K. Tajima, S. Nakamura, and Y. Ueno, "Ultrafast demultiplexing and bit-wise digital operation with Symmetric Mach-Zehnder all-optical switch (Invited)," 5th Optoelectronics and Communications Conference (OECC 2000), Makuhari, Chiba, July 2000, paper 14D1-2.
  27. K. Tajima, S. Nakamura, and Y. Ueno, "Ultrafast Demultiplexing and Bit-Wise Logic Operation using Symmetric Mach-Zehnder All-optical Switches (Invited)," Int. Conf. on Solid State Devices & Materials (SSDM 2000), August 2000, paper C-1-1, pp.70-71.
  28. Y. Ueno, S. Nakamura, H. Hatakeyama, T. Tamanuki, T. Sasaki, and K. Tajima, "168-Gb/s OTDM wavelength conversion using SMZ-type all-optical switch," 26th European Conference on Optical Communication (ECOC 2000), Sept. 4-7, 2000, Munich, Germany, vol. 1, pp. 13-14. online abstract , full text
  29. Y. Ueno, S. Nakamura, and K. Tajima, "Penalty-free error-free all-optical data pulse regeneration at 84 Gb/s with Symmetric-Mach-Zehnder-type semiconductor regenerator," Optical Fiber Communication Conference (OFC 2001), Anaheim, USA, March 17-22, 2001, paper MG5. online abstract , full text
  30. Y. Ueno, S. Nakamura, and K. Tajima, "Ultrafast wavelength conversion and data pulse regeneration with Symmetric-Mach-Zehnder all-optical switches," 8th International Workshop on Femtosecond Technology (FST 2001), June 28-29, 2001, Tsukuba, TA-6, p. 23.
  31. S. Nakamura, Y. Ueno, J. Sasaki, and K. Tajima, "Error-free demultiplexing at 252 Gbps with hybrid-integrated symmetric Mach-Zehnder all-optical switch," 8th international workshop on Femtosecond Technology (FST 2001), June 28-29, 2001, Tsukuba, TC-2, p. 94.
  32. S. Nakamura, Y. Ueno, and K. Tajima, "Ultrafast all-optical switching using a frequency shift accompanied by cross-phase modulation in a semiconductor optical amplifier," Conference on Lasers and Electro-Optics (CLEO 2001), May 6-11, 2001, Baltimore, CWI6, pp. 348-349.
  33. Y. Ueno, S. Nakamura, and K. Tajima, "5-ps 10-GHz pulse generation from a new semiconductor ring oscillator with an all-optical semiconductor switch," 4th Pacific Rim Conference on Lasers and Electro-Optics (CLEO PR2001), Makuhari, Chiba, July 15-19, 2001, postdeadline paper WIPD1-5, pp. 12-13.
  34. S. Nakamura, Y. Ueno, J. Sasaki, and K. Tajima, "Error-free demultiplexing at 252 Gbit/s and low-power-penalty, jitter-tolerant demultiplexing at 168 Gbit/s with integrated symmetric Mach-Zehnder all-optical switch," 27th European Conference on Optical Communication (ECOC 2001), Sept. 30-Oct. 4, 2001, Amsterdam, Netherlands, paper Th.F.2.2.
  35. Y. Ueno, S. Nakamura, and K. Tajima, "Ultrahigh-speed data regeneration and wavelength conversion for OTDM systems (Invited Talk)," 27th European Conference on Optical Communication (ECOC 2001), Sept. 30-Oct. 4, 2001, Amsterdam, Netherlands, paper Th.F.2.1. online abstract , full text
  36. S. Nakamura, Y. Ueno, and K. Tajima, "Error-free all-optical demultiplexing at 336 Gb/s with a hybrid-integrated Symmetric-Mach-Zehnder switch," Optical Fiber Communication Conference (OFC 2002), March 17-22, 2002, Anaheim, Postdeadline Paper FD3. online abstract
  37. K. Suzuki, T. Shimizu, S. Nakamura, Y. Ueno, M. Takahashi, T. Tamanuki, A. Furukawa, T. Sasaki, and K. Tajima, "Hybrid integrated Symmetric Mach Zehnder all-optical switch with phase controllers," the 2002 international meetings on Optical Internet and Photonics in Switching (COIN+PS 2002), July 21-25, 2002, Cheju Island, Korea, Paper PS.MoB4, pp. 43-45.
  38. S. Nakamura, Y. Ueno, and K. Tajima, "336-Gbps error-free demultiplexing with a hybrid-integrated Symmetric Mach-Zehnder all-optical switch," 9th international workshop on femtosecond technology (FST 2002), Tsukuba, June 27-28, 2002, FA-3.
  39. Y. Ueno, M. Takahashi, K. Suzuki, T. Shimizu, S. Nakamura, A. Furukawa, T. Tamanuki, K. Mori, T. Ae, T. Sasaki, and K. Tajima, "Control scheme for the optimization of the interferometer phase bias in the Symmetric-Mach-Zehnder all-optical switches (Best Paper Award)," 7th Optoelectronics and Communications Conference (OECC 2002), Yokoyama, July 8-12, 2002, pp. 464-466.
  40. S. Nakamura, Y. Ueno, and K. Tajima, "Ultrahigh-speed optical processing with SOA-based Symmetric-Mach-Zehnder-type all-optical switches (Invited)," IEEE/LEOS Summer Topical Meetings, Mont Tremblant, Quebec, Canada, July 15-17, 2002, Paper TuK4.
  41. Y. Ueno, M. Takahashi, S. Nakamura, K. Suzuki, T. Shimizu, A. Furukawa, T. Tamanuki, K. Mori, T. Ae, T. Sasaki, and K. Tajima, "Control scheme for optimizing the interferometer phase bias in the Symmetric-Mach-Zehnder all-optical switch," in the digest of 28th European Conference on Optical Communication (ECOC 2002), Copenhagen, Denmark, Sept. 8-12, 2002, vol. 2, paper 4.3.2.
  42. Y. Ueno, S. Nakamura, and K. Tajima, "Ultrafast SOA-based SMZ-type all-optical regenerators and wavelength converters (Invited)," Int. Conf. on Solid State Devices & Materials (SSDM 2002), Nagoya, Sept. 17-19, 2002, paper G-4-1, pp. 342-343. full text
  43. T. Tamanuki, S. Nakamura, Y. Ueno, K. Tajima, T. Ae, K. Mori, H. Hatakeyama, and T. Sasaki, "Dependence of nonlinear phase shift on cavity length of SOA for all-optical signal processing," Optical Fiber Communication Conference (OFC 2003), Atlanta, USA, March 23-28, 2003, paper ThX4. online abstract
  44. S. Nakamura, T. Tamanuki, Y. Ueno, and K. Tajima, "Ultrafast optical demultiplexing, regeneration, and wavelength conversion with symmetric-Mach-Zehnder all-optical switches (Invited)," Optical Fiber Communication Conference (OFC 2003), Atlanta, USA, March 23-28, 2003, paper WG1.
    . .
    --- from here: conference papers from the Univ. of Electro-Communications, Tokyo, Japan ---

  45. Y. Ueno, 'Theoretical reproduction of the 3R regenerative properties in an ultrafast all-optical symmetric-Mach-Zehnder gate,' 10th Int. Workshop on Femtosecond Technology (FST 2003), Makuhari, Japan, July 16-17, 2003, paper WP-9, p. 103.
  46. Y. Ueno, "All-optical signal processing for over-100-Gb/s optical TDM networks (Invited Talk)," IEEE LEOS Annual Meeting (LEOS 2003), Oct. 26-30, 2003, Tucson, Arizona, USA, vol. 1, pp. 380-381. online abstract , full text
  47. S. Nakamura, T. Tamanuki, M. Takahashi, Y. Ueno, and K. Tajima, 'Ultrafast optical signal processing with symmetric-Mach-Zehnder-type all-optical switches,' Photonics West, San Jose, USA, 2003, SPIE number 4998-03.
  48. K. Tajima, S. Nakamura, M. Takahashi, T. Tamanuki, Y. Ueno, A. Furukawa, and T. Sasaki, 'Semiconductor integrated Mach-Zehnder all-optical switches and ultrafast all-optical signal processing,' 11th European Conference on Integrated Optics (ECIO 2003), Prague, Czech Republic, April 2-4, 2003, vol. 2, pp. 155-164, paper FrB1.
  49. R. Suzuki, Y. Nagasue, M. Toyoda, and Y. Ueno, 'Suppression of pseudorandom timing jitters and wavelength chirping properties after optical 3R gating with a Symmetric Mach-Zehnder gate,' 9th OptoElectronics and Communications Conference (OECC 2004), July 12-16, 2004, Yokohama, Japan, paper 13E2-1, pp. 90-91. full text
  50. M. Toyoda, R. Suzuki, and Y. Ueno, 'First modeling of amplitude-noise suppression in PDSMZ-type optical 3R gating,' submitted to Optical Fiber Communication Conference (OFC 2005), Los Angeles, March 6-11, 2005.
  51. M.L. Nielsen, J. Mørk, J. Sakaguchi, R. Suzuki, and Y. Ueno, 'Reduction of nonlinear patterning effects in SOA-based all-optical switches using optical filtering', Optical Fiber Communication Conference (OFC 2005), Los Angeles, March 6-11, 2005, paper OThE7. full text
  52. G. Theophilopoulos, Y. Ueno, and S.A. Hamilton, panel discussion 'Outlook in 10-20 years (Invited),' OFC workshop 'All-optical wavelength conversion and signal processing for next generation network,' Optical Fiber Communication Conference (OFC 2005), Los Angeles, March 6-11, 2005. workshop program
  53. J. Sakaguchi, M.L. Nielsen, T. Ohira, R. Suzuki, and Y. Ueno, 'Observation of small sub-pulses generated in the DISC-type wavelength converter,' 10th Optoelectronics and Communications Conference (OECC 2005), Seoul, Korea, July 5-8, 2005, paper 8F1-4. full text
  54. R. Suzuki, S. Kobayashi, J. Sakaguchi, and Y. Ueno, 'Threshold condition for pulse generation from a DISC-loop-type pulse generator,' IQEC/CLEO-PR, July 11-15, 2005, Tokyo, paper CMF1-4, pp. 1522-1523. full text
  55. Y. Ueno, M. Toyoda, and R. Suzuki, 'Theoretical models of the SOA-based SMZ-type optical-3R gates (Invited talk),' Optical Amplifiers and their Applications (OAA 2005), Budapest, Hungary, August 7-10, 2005, paper MB3. full text
  56. J. Sakaguchi, Y. Ueno, K. Nishimura, and T. Yazaki, 'New method for characterizing the injected-carrier-to-photon conversion efficiencies inside the ultrafast all-optical semiconductor gates,' 9th International Symposium on Contemporary Photonics Technology (CPT 2006), Tokyo, Jan. 11-13, 2006, paper no. P-26, pp. 130-131.
  57. R. Suzuki, T. Ohira, J. Sakaguchi, and Y. Ueno, '40-GHz mode-locked pulse generation with a new scheme of SOA-based pulse generators,' CLEO/QELS 2006, May 21-26, 2006, Long beach, USA, paper no. CMG5. abstract , full text
  58. J. Sakaguchi, Y. Ueno, K. Nishimura, and T. Yazaki, 'New method for characterizing the injected-carrier-to-photon conversion efficiencies inside the ultrafast all-optical semiconductor gates,' Optical Amplifiers and their Applications (OAA 2006), June 25-28, 2006, Whisler, Canada, paper no. OTuC4. abstract , full text
  59. Jun Sakaguchi, Ferran Salleras, and Yoshiyasu Ueno, "Frequency-dependent electric dc power consumption in ultrafast all-optical semiconductor gates," 12th Optoelectronics and Communications Conference (OECC 2007), July 9-13, 2007, Yokohama, Japan, paper no. 10D2-3.
  60. Ferran Salleras, Masanori Honma, Jun Sakaguchi, Yoshiyasu Ueno, Nobuhiko Ozaki, Yoshinori Kitagawa, Kiyoshi Asakawa, Naoki Ikeda, Yoshimasa Sugimoto, "Criterion for removing a delayed peak from the ultrafast nonlinear response of photonic crystal/quantum dot waveguides," 1st Nonlinear Photonics Topical Meeting (NP 2007), Optical Society of America, Quebec city, Canada, Sept. 2-6, 2007, paper no. NTuC6. full text
  61. Ferran Salleras, Nobuhiko Ozaki, Yoshinori Kitagawa, Yoshiaki Takata, Kiyoshi Asakawa, Naoki Ikeda, Yoshimasa Sugimoto, Masanori Honma, and Yoshiyasu Ueno, "Acceleration of the refractive index response in nonlinear photonic crystal/quantum dot waveguides via the Purcell effect," submitted to Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2008), May 4-9, 2008, San Jose, CA, USA.
  62. Ryoichi Nakamoto, Hiroyuki Takeuchi, Jun Sakaguchi, and Yoshiyasu Ueno, "1.55-um, mode-locked, single-longitudinal-mode, 10-GHz, 2-ps, ultra-short optical pulse train from our original semiconductor-based pulse-source scheme," Topical Conference on Nanophotonics (NANO), Optical Society of America, May 26-29, 2008, Southeast Univ., Nanjing, P.R. China, paper no. Nano-08-191.
  63. Yoshiyasu Ueno, Jun Sakaguchi, Ryoichi Nakamoto, and Takehiro Nishida, "Ultrafast, low-energy-consumption, semiconductor-based, all-optical gate devices (Invited Talk)," 4th Asia-Pacific Microwave Photonics Conference (APMP 2009), April 22-24, 2009, Beijing, P.R. China. digest, voice, program.
  64. Takehiro Nishida, Satoshi Shinada, Naoya Wada, Takeru Yamaji, and Yoshiyasu Ueno, "Ultrafast distortion-free semiconductor-based all-optical gate that contains optical-spectrum's phase-and-amplitude synthesizer," 22nd Annual Meeting of IEEE Photonics Society, Oct. 4-8, 2009, Belek-Antalya, Turkey, paper no. TuB4. online abstract , full text (submitted on June 19, accepted on August 4, 2009).
  65. Yoshiyasu Ueno, "Roadmap of ultrafast energy-saving optical semiconductor devices to Year 2025 (Invited Talk)," 42nd International Conference on Solid State Devices and Materials (ssdm2010), Sept. 22-24, 2010, Univ. of Tokyo, Tokyo, Japan.
    digest, talks slides (32 pages)

[4] PhD theses


[5] Patents


University of Electro-Communications, Graduate School of Electronic Engineering / Dept. of Electron. Eng.
Ultrafast Optical Logic Laboratory English/ Japanese
Yoshiyasu Ueno