Toshihiko Baba

Summary

Affiliation: Yokohama National University
Country: Japan

Publications

  1. doi request reprint Continuously tunable slow-light device consisting of heater-controlled silicon microring array
    Fumihiro Shinobu
    Department of Electrical and Computer Engineering, Yokohama National University, Hodogaya ku, Yokohama, Japan
    Opt Express 19:13557-64. 2011
  2. ncbi request reprint Large delay-bandwidth product and tuning of slow light pulse in photonic crystal coupled waveguide
    Toshihiko Baba
    Yokohama National University, Department of Electrical and Computer Engineering79 5 Tokiwadai, Hodogayaku, Yokohama 240 8501, Japan
    Opt Express 16:9245-53. 2008
  3. pmc Dispersion-controlled slow light in photonic crystal waveguides
    Toshihiko Baba
    Department of Electrical and Computer Engineering, Yokohama National University, Yokohama 240 8501, Japan
    Proc Jpn Acad Ser B Phys Biol Sci 85:443-53. 2009
  4. doi request reprint Compact and fast photonic crystal silicon optical modulators
    Hong C Nguyen
    Department of Electrical and Computer Engineering, Yokohama National University, 79 5 Tokiwadai, Hodogayaku, Yokohama 240 8501, Japan
    Opt Express 20:22465-74. 2012
  5. doi request reprint Selective detection of sub-atto-molar Streptavidin in 10(13)-fold impure sample using photonic crystal nanolaser sensors
    Shoji Hachuda
    Department of Electrical and Computer Engineering, Yokohama National University 79 5 Tokiwadai, Hodogaya ku, Yokohama 240 8501, Japan
    Opt Express 21:12815-21. 2013
  6. ncbi request reprint Aberration reduction and unique light focusing in a photonic crystal negative refractive lens
    Tomohiko Asatsuma
    Yokohama National University, Department of Electrical and Computer Engineering 79 5 Tokiwadai, Hodogayaku, Yokohama 240 8501, Japan
    Opt Express 16:8711-9. 2008
  7. doi request reprint Nonlinear light propagation in chalcogenide photonic crystal slow light waveguides
    Keijiro Suzuki
    Department of Electrical and Computer Engineering, Yokohama National University, 79 5 Tokiwadai, Hodogaya ku, Yokohama 240 8501, Japan
    Opt Express 18:26675-85. 2010
  8. doi request reprint Fabrication and characterization of chalcogenide glass photonic crystal waveguides
    Keijiro Suzuki
    Department of Electrical and Computer Engineering, Yokohama National University, 79 5 Tokiwadai, Hodogaya ku, Yokohama, 240 8501, Japan
    Opt Express 17:22393-400. 2009
  9. doi request reprint Large tunable fractional delay of slow light pulse and its application to fast optical correlator
    Norihiro Ishikura
    Department of Electrical and Computer Engineering, Yokohama National University, 79 5 Tokiwadai, Yokohama, 240 8501, Japan
    Opt Express 19:24102-8. 2011
  10. ncbi request reprint Slow-light-based variable symbol-rate silicon photonics DQPSK receiver
    Keijiro Suzuki
    Department of Electrical and Computer Engineering, Yokohama National University, 79 5 Tokiwadai, Hodogayaku, Yokohama, 240 8501, Japan
    Opt Express 20:4796-804. 2012

Collaborators

Detail Information

Publications18

  1. doi request reprint Continuously tunable slow-light device consisting of heater-controlled silicon microring array
    Fumihiro Shinobu
    Department of Electrical and Computer Engineering, Yokohama National University, Hodogaya ku, Yokohama, Japan
    Opt Express 19:13557-64. 2011
    ..Eye opening of 40 Gbps non-return-to-zero signals is observed at up to a 150 ps delay and a 4 bit buffering capacity is confirmed, which corresponds to a spatial buffering density of 0.29 kbit/mm2...
  2. ncbi request reprint Large delay-bandwidth product and tuning of slow light pulse in photonic crystal coupled waveguide
    Toshihiko Baba
    Yokohama National University, Department of Electrical and Computer Engineering79 5 Tokiwadai, Hodogayaku, Yokohama 240 8501, Japan
    Opt Express 16:9245-53. 2008
    ..We propose a technique for externally controlling the chirping to permit variable delay. We demonstrate tuning of the pulse delay up to 23 ps, corresponding to a ~7 mm extension of the free space length...
  3. pmc Dispersion-controlled slow light in photonic crystal waveguides
    Toshihiko Baba
    Department of Electrical and Computer Engineering, Yokohama National University, Yokohama 240 8501, Japan
    Proc Jpn Acad Ser B Phys Biol Sci 85:443-53. 2009
    ..Then the paper describes experimental observations of slow light pulse, exhibiting their record high values. It also demonstrates the nonlinear enhancement based on slow light pulse transmission...
  4. doi request reprint Compact and fast photonic crystal silicon optical modulators
    Hong C Nguyen
    Department of Electrical and Computer Engineering, Yokohama National University, 79 5 Tokiwadai, Hodogayaku, Yokohama 240 8501, Japan
    Opt Express 20:22465-74. 2012
    ....
  5. doi request reprint Selective detection of sub-atto-molar Streptavidin in 10(13)-fold impure sample using photonic crystal nanolaser sensors
    Shoji Hachuda
    Department of Electrical and Computer Engineering, Yokohama National University 79 5 Tokiwadai, Hodogaya ku, Yokohama 240 8501, Japan
    Opt Express 21:12815-21. 2013
    ..These are remarkable capabilities that are promising for practical biosensing in the medical applications mentioned above...
  6. ncbi request reprint Aberration reduction and unique light focusing in a photonic crystal negative refractive lens
    Tomohiko Asatsuma
    Yokohama National University, Department of Electrical and Computer Engineering 79 5 Tokiwadai, Hodogayaku, Yokohama 240 8501, Japan
    Opt Express 16:8711-9. 2008
    ..These results prove the feasibility of an in-plane free space optical network based on negative refraction...
  7. doi request reprint Nonlinear light propagation in chalcogenide photonic crystal slow light waveguides
    Keijiro Suzuki
    Department of Electrical and Computer Engineering, Yokohama National University, 79 5 Tokiwadai, Hodogaya ku, Yokohama 240 8501, Japan
    Opt Express 18:26675-85. 2010
    ..We show that the waveguide exhibits negligible two-photon absorption, and also high-efficiency self-phase modulation and four-wave mixing, which are assisted by low-dispersion slow light...
  8. doi request reprint Fabrication and characterization of chalcogenide glass photonic crystal waveguides
    Keijiro Suzuki
    Department of Electrical and Computer Engineering, Yokohama National University, 79 5 Tokiwadai, Hodogaya ku, Yokohama, 240 8501, Japan
    Opt Express 17:22393-400. 2009
    ..6 x 10(4) W(-1)m(-1). Four-wave mixing is also observed in the waveguide, while two-photon absorption at optical communication wavelengths is sufficiently small and the corresponding figure of merit is larger than 11...
  9. doi request reprint Large tunable fractional delay of slow light pulse and its application to fast optical correlator
    Norihiro Ishikura
    Department of Electrical and Computer Engineering, Yokohama National University, 79 5 Tokiwadai, Yokohama, 240 8501, Japan
    Opt Express 19:24102-8. 2011
    ..Using this correlator, we successfully observed sub-picosecond pulses at a scan frequency up to 2 kHz, which is 100 times faster than that of mechanical scanners in conventional correlators...
  10. ncbi request reprint Slow-light-based variable symbol-rate silicon photonics DQPSK receiver
    Keijiro Suzuki
    Department of Electrical and Computer Engineering, Yokohama National University, 79 5 Tokiwadai, Hodogayaku, Yokohama, 240 8501, Japan
    Opt Express 20:4796-804. 2012
    ..Demodulation was confirmed at symbol-rates of 7.4 - 9.0 Gbaud, corresponding to bit-rates of 14.8 - 18.0 Gb/s...
  11. doi request reprint 10 Gb/s operation of photonic crystal silicon optical modulators
    Hong C Nguyen
    Department of Electrical and Computer Engineering, Yokohama National University, Hodogayaku, Yokohama, Japan
    Opt Express 19:13000-7. 2011
    ..An open eye pattern is observed at bitrates of 10 Gb/s and 2 Gb/s, with and without pre-emphasis of the drive signal, respectively...
  12. ncbi request reprint Refractive index sensing utilizing a cw photonic crystal nanolaser and its array configuration
    Shota Kita
    Yokohama National University, Department of Electrical and Computer Engineering, 79 5 Tokiwadai, Hodogayaku, Yokohama 240 8501, Japan
    Opt Express 16:8174-80. 2008
    ..These will be disposable sensors with very simple optical I/O. They are anticipated to be integrated with biochips and used for label-free single molecule detection...
  13. doi request reprint Super-sensitivity in label-free protein sensing using a nanoslot nanolaser
    Shota Kita
    Department of Electrical and Computer Engineering, Yokohama National University, Hodogayaku, Yokohama, Japan
    Opt Express 19:17683-90. 2011
    ..The specific adsorption of the protein is observed only around the nanoslot with strong laser intensity. This suggests that the super-sensitivity arises from the effective trapping of protein in the nanoslot...
  14. doi request reprint Nonlinear enhancement in photonic crystal slow light waveguides fabricated using CMOS-compatible process
    Mizuki Shinkawa
    Opt Express 19:22208-18. 2011
    ..Such slow light may add various functionalities in Si photonics, while loss reduction is desired for ensuring the advantage of slow light...
  15. doi request reprint Stopping of light by the dynamic tuning of photonic crystal slow light device
    Yuji Saito
    Department of Electrical and Computer Engineering, Yokohama National University, 79 5 Tokiwadai, Hodogayaku, Yokohama 240 8501, Japan
    Opt Express 18:17141-53. 2010
    ..Taking into account carrier distribution and free carrier absorption, the actual behaviors of stopped light are estimated. We define and evaluate an effective delay-bandwidth product, which is affected by free carrier absorption...
  16. doi request reprint High-speed delay tuning of slow light in pin-diode-incorporated photonic crystal waveguide
    Ryo Hayakawa
    Department of Electrical and Computer Engineering, Yokohama National University, Yokohama, Japan
    Opt Lett 38:2680-2. 2013
    ..The former changes the delay up to 62 ps for the DC bias. The latter changes the delay for 1 Gbps pseudo random bit sequence tuning signals, which will be applicable to advanced time-domain optical signal processing...
  17. ncbi request reprint Photonic crystal negative refractive optics
    Toshihiko Baba
    Department of Electrical and Computer Engineering, Yokohama National University, 79 5 Tokiwadai, Hodogayaku, Yokohama 240 8501, Japan
    J Nanosci Nanotechnol 10:1473-81. 2010
    ..A compact wavelength demultiplexer can be designed by combining the prism and lens effects. The collimation effect is obtainable not only inside but also outside of the PC by optimizing negative refractive condition...
  18. ncbi request reprint Slow light with low dispersion and nonlinear enhancement in a lattice-shifted photonic crystal waveguide
    Yohei Hamachi
    Department of Electrical and Computer Engineering, Yokohama National University, Yokohama, Japan
    Opt Lett 34:1072-4. 2009
    ..We observed delayed transmission of picosecond optical pulses, as well as two-photon absorption and self-phase modulation enhanced by a high internal light intensity in the slow-light regime...