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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| OFT | 2018-10-11 14:00 |
Miyagi | Touhoku Univ. | [Poster Presentation]
12 bit/s/Hz, 58.2 Tbit/s, 256 QAM-160 km C-band WDM Transmission Using an Injection Locking Technique Takashi Kan, Keisuke Kasai, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.)  OFT2018-28 |
Injection locking can realize precise carrier-phase synchronization between the transmitted data and a local oscillator ... [more] | OFT2018-28 pp.73-77 |
| OFT | 2018-10-11 14:00 |
Miyagi | Touhoku Univ. | [Poster Presentation]
Observation of GAWBS noise and development of its compensation technique in digital coherent optical transmission Naoya Takefushi, Masato Yoshida, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.) OFT2018-29 |
Guided acoustic-wave Brillouin scattering (GAWBS) noise is an optical phase fluctuation that occurs coherently with ther... [more] | OFT2018-29 pp.79-83 |
| CS, OCS (Joint) |
2018-01-29 15:45 |
Ehime | Ehime University | 80 Gbit/s, 256 QAM digital coherent optical transmission with injection-locking for next generation mobile fronthaul Keisuke Kasai, Yixing Wang, Masato Yoshida, Toshihiko Hirooka, Katsumi Iwatsuki, Masataka Nakazawa (Tohoku Univ.) OCS2017-70 |
We propose a simple digital coherent transmission system with injection-locking for the next generation (5G and post 5G)... [more] | OCS2017-70 pp.19-24 |
| OFT, OCS, IEE-CMN, ITE-BCT [detail] | 2016-11-11 09:30 |
Nagasaki | Nagasaki Shoko Kaigi Sho | Fabrication of a multi-core fiber by using a slurry casting method Jun Yamamoto, Tamotsu Yajima, Yusuke Kinoshita, Futoshi Ishii (Kohokoku Kogyo), Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa (Tohoku Univ.) OFT2016-30 |
We fabricated a 7 core multi-core fiber (MCF) using a slurry casting method with a highly pure SiO2 powder as a starting... [more] | OFT2016-30 pp.29-33 |
| LQE, OPE, EMD, R, CPM | 2016-08-25 11:05 |
Hokkaido | A 295 mW output, frequency-stabilized erbium silica fiber laser Keisuke Kasai, Masato Yoshida, Masataka Nakazawa (Tohoku Univ.) R2016-23 EMD2016-27 CPM2016-36 OPE2016-57 LQE2016-32 |
We demonstrate the frequency stabilization of a high output power, erbium silica fiber laser by utilizing an acetylene a... [more] | R2016-23 EMD2016-27 CPM2016-36 OPE2016-57 LQE2016-32 pp.21-26 |
|
| 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] | |
| OFT | 2014-01-24 14:30 |
Tokyo | Investigation of the Influence of Fusion Splice on Crosstalk Properties of Multicore Fiber Katsunori Imamura, Ryuichi Sugizaki, Takeshi Yagi (Furukawa Electric), Masato Yoshida, Masataka Nakazawa (Tohoku Univ.) OFT2013-48 |
We investigated the relationship between splice loss and crosstalk properties in the fusion spliced multicore fibers. We... [more] | OFT2013-48 pp.11-15 |
|
| LQE, CPM, EMD, OPE, R | 2012-08-23 11:50 |
Miyagi | Tohoku Univ. | Performance improvement of optical frequency stabilized Cs optical atomic clock Kazunari Tokuhira, Fumitaka Suzuki, Masato Yoshida, Masataka Nakazawa (Tohoku Univ.) R2012-25 EMD2012-31 CPM2012-56 OPE2012-63 LQE2012-29 |
We have proposed a Cs optical atomic clock, which carries a atandard microwave clock signal with an optical pulse. The c... [more] | R2012-25 EMD2012-31 CPM2012-56 OPE2012-63 LQE2012-29 pp.21-25 |
| 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 | 2011-07-11 13:40 |
Osaka | Osaka Univ. Nakanoshima Center | Development of FPGA-based real-time receiver for 64 QAM coherent signals Masato Yoshida, Tatsunori Omiya, Keisuke Kasai, Masataka Nakazawa (Tohoku Univ.) OCS2011-27 |
(Advance abstract in Japanese is available) [more] | OCS2011-27 pp.7-12 |
| OCS | 2011-07-12 15:50 |
Osaka | Osaka Univ. Nakanoshima Center | Frequency Division Multiplexing 64 QAM-OFDM (420Gb /s) transmission over 160 km Tatsunori Omiya, Kazushi Toyoda, Keisuke Kasai, Masato Yoshida, Masataka Nakazawa (Tohoku Univ.) OCS2011-43 |
We have demonstrated 64QAM-OFDM coherent optical transmission with a C2H2 frequency-stabilized fiber laser and an optica... [more] | OCS2011-43 pp.93-98 |
| 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 |
| 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 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 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 |
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| 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 |
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