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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| 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 |
|
| OFT, OCS (Joint) |
2009-08-28 14:35 |
Hokkaido | A film-type saturable absorber with P3HT-incorporated single-wall carbon nanotubes coated on polyamide and its application to a femtosecond fiber laser Fumio Shohda, Masataka Nakazawa (Tohoku Univ.), Junji Mata, Jun Tsukamoto (Toray) OFT2009-29 |
SWNT is an attractive material as an ultrahigh-speed saturable absorber in a passively mode-locked fiber laser as it has... [more] | OFT2009-29 pp.59-62 |
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| OFT, OCS (Joint) |
2009-08-28 15:00 |
Hokkaido | A 0.4 GHz ultranarrow FBG optical filter with 30-dB side lobe suppression Anne Mori, Keisuke Kasai, Masato Yoshida, Masataka Nakazawa (Tohoku Univ.) OFT2009-30 |
A fiber Bragg grating (FBG) is an attractive optical filter device because of its narrow wavelength selectivity, low los... [more] | OFT2009-30 pp.63-68 |
|
| OPE, EMD, CPM, LQE | 2009-08-20 16:15 |
Miyagi | Oscillation characteristics of a 1.5μm FM-eliminated 13C2H2 frequency-stabilized laser diode Keisuke Kasai, Masataka Nakazawa (Tohoku Univ.) EMD2009-40 CPM2009-64 OPE2009-88 LQE2009-47 |
We demonstrate the frequency stabilization of a 1.5 um laser diode (LD) with a low intensity noise and a narrow linewidt... [more] | EMD2009-40 CPM2009-64 OPE2009-88 LQE2009-47 pp.73-76 |
|
| OPE, EMD, CPM, LQE | 2009-08-20 17:30 |
Miyagi | 10 GHz-11.5 ps pulse generation from a gain-switched VCSEL at 1.1 um Kengo Koizumi, Masato Yoshida, Masataka Nakazawa (Tohoku Univ.) EMD2009-43 CPM2009-67 OPE2009-91 LQE2009-50 |
Vertical cavity surface emitting laser (VCSEL) is an attractive light source because of its low threshold, single longit... [more] | EMD2009-43 CPM2009-67 OPE2009-91 LQE2009-50 pp.89-92 |
|
| OPE, EMD, CPM, LQE | 2009-08-21 09:00 |
Miyagi | Passively mode-locked femtosecond fiber soliton laser with intersubband transition module Fumio Shohda, Masataka Nakazawa (Tohoku Univ.), Ryoichi Akimoto, Hiroshi Ishikawa (AIST) EMD2009-44 CPM2009-68 OPE2009-92 LQE2009-51 |
An intersubband transition (ISBT) in a quantum well has attracted considerable attention recently since it can be utiliz... [more] | EMD2009-44 CPM2009-68 OPE2009-92 LQE2009-51 pp.93-96 |
|
| OPE, EMD, CPM, LQE | 2009-08-21 09:25 |
Miyagi | Optical frequency-stabilized and 40 GHz repetition-rate-stabilized, regeneratively mode-locked pulse laser Masato Yoshida, Keisuke Kasai, Masataka Nakazawa (Tohoku Univ.) EMD2009-45 CPM2009-69 OPE2009-93 LQE2009-52 |
Ultrastable mode-locked pulse lasers operating in the GHz region have been receiving a lot of attention with respect to ... [more] | EMD2009-45 CPM2009-69 OPE2009-93 LQE2009-52 pp.97-102 |
|
| OPE, EMD, CPM, LQE | 2009-08-21 09:50 |
Miyagi | Cs optical atomic clock with a mode-hop-free fiber laser Takahito Morisaki, Masato Yoshida, Masataka Nakazawa (Tohoku Univ.) EMD2009-46 CPM2009-70 OPE2009-94 LQE2009-53 |
Recently, delivery technique of standards through optical fiber networks has been receiving a lot of attention with resp... [more] | EMD2009-46 CPM2009-70 OPE2009-94 LQE2009-53 pp.103-108 |
|
| OCS, OPE (Joint) |
2009-05-15 12:50 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | 64 QAM-OFDM coherent optical transmission Tatsunori Omiya, Hiroki Goto, Keisuke Kasai, Masato Yoshida, Masataka Nakazawa (Tohoku Univ.) OCS2009-1 |
Recently, Orthogonal Frequency Division Multiplexing (OFDM) system, that was originally developed in wireless communicat... [more] | OCS2009-1 pp.1-6 |
| LQE, CPM, EMD, OPE | 2008-08-28 14:30 |
Miyagi | Touhoku Univ. | New scheme for Independent stabilizing the repetition rate and optical frequency of a laser using a regenerative mode-locking technique Masataka Nakazawa, Masato Yoshida (Tohoku Univ.) EMD2008-39 CPM2008-54 OPE2008-69 LQE2008-38 |
We have succeeded in achieving independent control of the repetition rate and optical frequency of a pulse laser by empl... [more] | EMD2008-39 CPM2008-54 OPE2008-69 LQE2008-38 pp.39-44 |
| LQE, CPM, EMD, OPE | 2008-08-29 13:10 |
Miyagi | Touhoku Univ. | A 1.3 GHz ultranarrow FBG optical filter with 20-dB side lobe suppression Anne Mori, Keisuke Kasai, Masato Yoshida, Masataka Nakazawa (Tohoku Univ.) EMD2008-52 CPM2008-67 OPE2008-82 LQE2008-51 |
[more] | EMD2008-52 CPM2008-67 OPE2008-82 LQE2008-51 pp.103-108 |
| LQE, CPM, EMD, OPE | 2008-08-29 13:35 |
Miyagi | Touhoku Univ. | 1.5 μm Femtosecond Fiber Laser with CNT-doped Polymer Saturable Absorber Fumio Shohda, Takafumi Shirato, Masataka Nakazawa, Kyoji Komatsu, Toshikuni Kaino (Tohoku Univ.), Junji Mata, Jun Tsukamoto (Toray) EMD2008-53 CPM2008-68 OPE2008-83 LQE2008-52 |
SWNT is an attractive saturable absorber material as it has ultrahigh-speed nonlinear response speed faster than 1 ps. I... [more] | EMD2008-53 CPM2008-68 OPE2008-83 LQE2008-52 pp.109-114 |
| 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 13:50 |
Miyagi | Fabrication of an ultranarrow band fiber Bragg grating filter with a 1.3 GHz bandwidth Akihito Suzuki, Yohei Takahashi, Masataka Nakazawa (Tohoku Univ.) OFT2006-18 |
Various applications of fiber Bragg gratings have been proposed, such as fiber-type narrow band filters or gain-flatteni... [more] | OFT2006-18 pp.11-16 |
|
| 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 10:25 |
Miyagi | Performance improvements of a C2H2 frequency-stabilized fiber laser Keisuke Kasai, Akihito Suzuki, Masato Yoshida, Masataka Nakazawa (Tohoku Univ.) OFT2006-26 |
An erbium-doped fiber with high Er-ion concentration generally causes output power fluctuation and self-pulsing operatio... [more] | OFT2006-26 pp.57-62 |
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