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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| QIT (2nd) |
2014-11-18 13:30 |
Miyagi | Tohoku Univ. | QAM quantum stream cipher using digital coherent optical transmission Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, Keisuke Kasai (Tohoku Univ.) |
[more] | |
| OCS, OPE, LQE | 2014-10-30 14:05 |
Nagasaki | Nagasaki Museum of History and Culture | High-performance TDM demultiplexing of coherent Nyquist pulses using time-domain orthogonality Koudai Harako, David Odeke Otuya, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa (TohokuUniv.)  OCS2014-60 OPE2014-104 LQE2014-78 |
We propose a simple and high-performance scheme for demultiplexing coherent Nyquist TDM signals by photo-mixing on a pho... [more] | OCS2014-60 OPE2014-104 LQE2014-78 pp.97-100 |
| LQE, CPM, EMD, OPE, R | 2012-08-24 09:30 |
Miyagi | Tohoku Univ. | 1.07μm passively mde-locked Ytterbium-doped fiber laser with SWNT/PMMA saturable absorber Masato Yoshida, Yuichiro Hori, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.) R2012-37 EMD2012-43 CPM2012-68 OPE2012-75 LQE2012-41 |
Single-wall carbon nanotubes (SWNT) have received considerable attention as a nonlinear optical material for ultrashort ... [more] | R2012-37 EMD2012-43 CPM2012-68 OPE2012-75 LQE2012-41 pp.83-86 |
| LQE, CPM, EMD, OPE, R | 2012-08-24 09:55 |
Miyagi | Tohoku Univ. | Increase of Output Power of Passively Mode-Locked Fiber Laser with a SWNT Takato Ono, Yuichiro Hori, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.), Junji Mata, Jun Tsukamoto (Toray) R2012-38 EMD2012-44 CPM2012-69 OPE2012-76 LQE2012-42 |
We have demonstrated a passively mode-locked fiber laser with SWNT-based saturable absorbers made by uniformly dispersin... [more] | R2012-38 EMD2012-44 CPM2012-69 OPE2012-76 LQE2012-42 pp.87-90 |
| OCS | 2012-07-26 14:05 |
Shizuoka | 32 RZ/QAM coherent optical transmission employing an RZ-CW conversion technique Keisuke Kasai, David Odeke Otuya, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.) OCS2012-23 |
Coherent optical time division multiplexing (OTDM) transmission with a multi-level modulation format has attracted a lot... [more] | OCS2012-23 pp.13-18 |
|
| NS, OCS, PN (Joint) |
2012-06-22 11:15 |
Yamagata | Yamagata Univ. | Demultiplexing of 160 Gbit/s OTDM signal using a nonlinear optical loop mirror at 1.1μm Kengo Koizumi, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa (Tohoku Univ.) OCS2012-18 |
(Advance abstract in Japanese is available) [more] | OCS2012-18 pp.47-52 |
| OCS, OPE (Joint) |
2012-05-18 09:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg(Tokyo) | Depolarization-induced crosstalk in polarization-multiplexed transmission and its impact on ultrahigh-speed optical transmission Toshihiko Hirooka, Koudai Harako, Pengyu Guan, Masataka Nakazawa (Tohoku Univ.) OCS2012-1 |
Ultrashort optical pulses such as used in a single-channel Terabit/s OTDM transmission suffers from significant transmis... [more] | OCS2012-1 pp.1-4 |
| OCS, CS (Joint) |
2011-01-28 10:15 |
Tokushima | The University of Tokushima | Performance improvement of 10 Gsymbol/s, 64 QAM coherent optical transmission by using back propagation method of nonlinear Schrödinger equation Kazushi Toyoda, Seiji Okamoto, Tatsunori Omiya, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.) OCS2010-110 |
We have demonstrated 64 ~ 512 QAM coherent optical transmission using a C2H2 frequency-stabilized fiber laser and an OPL... [more] | OCS2010-110 pp.67-72 |
| LQE, OPE, OCS | 2010-10-29 11:10 |
Fukuoka | Mojiko Retro Town, Minato house | 1.28 Tbit/s/ch Single-polarization DQPSK Transmission over 525 km Using Ultrafast Time-domain Optical Fourier Transformation Yutaro Tomiyama, Pengyu Guan (Tohoku Univ.), Hans Christian Hansen Mulvad (DTU), Toshiyuki Hirano, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.) OCS2010-76 OPE2010-112 LQE2010-85 |
We demonstrate a single-channel 1.28 Tbit/s-525 km transmission using OTDM of subpicosecond DQPSK signals. In order to c... [more] | OCS2010-76 OPE2010-112 LQE2010-85 pp.121-126 |
| OCS, NS, PN (Joint) |
2010-06-24 10:45 |
Akita | Akita University | Single-channel 400 Gbit/s, OTDM-32 RZ/QAM coherent transmission over 225 km Keisuke Kasai, Tatsunori Omiya, Pengyu Guan, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.) OCS2010-11 |
Coherent optical time division multiplexing (OTDM) transmission with a multi-level modulation format based on digital si... [more] | OCS2010-11 pp.1-6 |
| OFT, OCS (Joint) |
2009-08-28 11:15 |
Hokkaido | 10 Gbit/s photonic crystal fiber transmission with a 1.1 um directly-modulated VCSEL Kengo Koizumi, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa (Tohoku Univ.) OFT2009-27 |
Recently, a high-speed optical transmission system at a shorter wavelength such as in the 0.8 ～1.2 um band has attracted... [more] | OFT2009-27 pp.51-54 |
|
| OCS | 2007-05-11 13:00 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Photonic crystal fiber transmission technology using a 850 nm VCSEL Toshihiko Hirooka, Hideaki Hasegawa, Yosuke Oikawa, Masataka Nakazawa (Tohoku Univ.), Kenya Suzuki, Yasuyuki Inoue (NTT) OCS2007-1 |
[more] | OCS2007-1 pp.1-6 |
| OCS, OFT (Joint) |
2006-08-24 15:15 |
Miyagi | 40 Gbit/s (4x10 Gbit/s) -3 km WDM transmission using 850 nm VCSEL, AWG, and PCF Yosuke Oikawa, Hideaki Hasegawa, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa (Tohoku Univ.), Kenya Suzuki, Yasuyuki Inoue (NTT) OFT2006-21 |
Recently, a photonic crystal fiber (PCF), which has a core region surrounded by multiple air holes, has received a lot o... [more] | OFT2006-21 pp.27-32 |
|
| OCS, OFT (Joint) |
2006-08-24 15:40 |
Miyagi | Comparison of 40 GHz optical demultiplexers using SMZ and EA modulator in 160 Gbit/s-500 km OTDM transmission Toshihiko Hirooka, Takashi Kumakura, Kou Osawa, Masataka Nakazawa (Tohoku Univ.) OFT2006-22 |
[more] | OFT2006-22 pp.33-38 |
|
| OCS, OFT (Joint) |
2006-08-25 10:50 |
Miyagi | Linewidth broadening in high-speed optical comb transmission using a picosecond mode-locked laser Kou Osawa, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa (Tohoku Univ.) OFT2006-27 |
An optical pulse train generated from a mode-locked laser has neatly repetitive longitudinal modes in the frequency doma... [more] | OFT2006-27 pp.63-68 |
|
| OCS | 2006-06-16 10:50 |
Shizuoka | Toray Human Resources Development Center | 160 Gbit/s-600 km OTDM transmission using time-domain optical Fourier transformation Toshihiko Hirooka, Ken-ichi Hagiuda, Takashi Kumakura, Kou Osawa, Masataka Nakazawa (Tohoku Univ.) OCS2006-27 |
We have recently proposed a distortion-free optical pulse transmission scheme that uses transform-limited pulses and tim... [more] | OCS2006-27 pp.25-29 |
| ISEC, LOIS | 2004-11-09 13:25 |
Osaka | Osaka Univ. | Virtual Transmission Monitoring System for Behavior Analysis of Virus Toshihiko Hirooka (The Univ. of Tokushima), Yoshiaki Shiraishi (Kinki Univ.), Masakatu Morii (The Univ. of Tokushima), Yuji Hoshizawa (Secure Brain), Koji Nakao (KDDI) |
The resarch of virus such as detection of virus, or behavior analysis of virus is active. It is difficult to know the be... [more] | ISEC2004-92 OIS2004-59 pp.51-56 |
| OCS, OFT | 2004-08-26 10:25 |
Hokkaido | Muroran Institute of Technology | Stimulated Brillouin scattering in generation of an ultrahigh-speed femtosecond pulse train using a dispersion-decreasing fiber Ken-ichi Hagiuda, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.) |
[more] | OCS2004-54 OFT2004-17 pp.13-18 |
| OCS, OFT | 2004-08-27 11:35 |
Hokkaido | Muroran Institute of Technology | Generation of ultrahigh-speed parabolic pulses for time-domain optical Fourier transformation Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.) |
Time-domain optical Fourier transformation, in which the spectral profile is converted to the waveform in the time domai... [more] | OCS2004-74 OFT2004-37 pp.37-42 |
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