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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| OPE, LQE, OFT, OCS | 2024-05-17 14:35 |
Online | Online | [Invited Talk]
Report on OFC2024
-- optical transceivers -- Shota Ishimura (KDDI Research) |
(To be available after the conference date) [more] | |
| OPE, LQE, OFT, OCS | 2024-05-17 16:05 |
Online | Online | [Special Invited Talk]
Metasurface-based Coherent Receiver Insensitive to LO Polarization Takuo Tanemura, Kento Komatsu (Univ. Tokyo), Shota Ishimura (KDDI Research), Chun Ren, Go Soma (Univ. Tokyo), Hidenori Takahashi, Takehiro Tsuritani (KDDI Research), Masatoshi Suzuki (Waseda Univ.), Yoshiaki Nakano (Univ. Tokyo) |
(To be available after the conference date) [more] | |
| LQE, OPE, OCS | 2023-11-24 16:30 |
Online | Online | [Special Invited Talk]
Demonstration of 4-core Dual-polarization Optical Hybrid Using Dielectric Metasurface Kento Komtsu, Go Soma (Univ. of Tokyo), Shota Ishimura, Hidenori Takahashi, Takehiro Tsuritani, Masatoshi Suzuki (KDDI Research), Yoshiaki Nakano, Takuo Tanemura (Univ. of Tokyo)  OCS2023-55 OPE2023-105 LQE2023-52 |
This technical report reviews the presentation of the ECOC2023 postdeadline paper Th.C.1.3. Spatially scalable metasurfa... [more] | OCS2023-55 OPE2023-105 LQE2023-52 pp.30-33 |
| PN | 2023-11-16 15:30 |
Ehime | (Primary: On-site, Secondary: Online) |
[Invited Talk]
Free-space optical communications using photonic-crystal surface-emitting lasers Shota Ishimura (KDDI Research.), Ryohei Morita, Takuya Inoue (Kyoto Univ.), Kosuke Nishimura, Hidenori Takahashi, Takehiro Tsuritani (KDDI Research.), Menaka De Zoysa, Kenji Ishizaki (Kyoto Univ.), Masatoshi Suzuki (KDDI Research.), Susumu Noda (Kyoto Univ.) PN2023-41 |
Recently, the application of optical communication in space has been actively discussed. Compared to microwaves or milli... [more] | PN2023-41 pp.27-32 |
| MWPTHz, PN, EMT, IEE-EMT [detail] | 2023-01-23 14:30 |
Osaka | (Primary: On-site, Secondary: Online) |
[Invited Talk]
Analog Radio-over-Fiber Systems for 5G and Beyond 5G Mobile Communication Systems Kazuki Tanaka, Shinji Nimura, Shota Ishimura, Kosuke Nishimura, Ryo Inohara (KDDI Research) PN2022-34 EMT2022-72 MWPTHz2022-60 |
Millimeter and sub-terahertz waves will be used for high-speed wireless communication in the mature phase of fifth gener... [more] | PN2022-34 EMT2022-72 MWPTHz2022-60 pp.17-21 |
| OPE, LQE, OCS | 2022-11-18 16:05 |
Online | Online | [Special Invited Talk]
Proposal and Demonstration of Free-Space Optical Communication Using Lens-Free Photonic-Crystal Surface-Emitting Laser Shota Ishimura (KDDI Research), Ryohei Morita, Takuya Inoue (Kyoto Univ.), Kosuke Nishimura, Hidenori Takahashi, Takehiro Tsuritani (KDDI Research), Menaka De Zoysa, Kenji Ishizaki (Kyoto Univ.), Masatoshi Suzuki (KDDI Research), Susumu Noda (Kyoto Univ.) OCS2022-57 OPE2022-92 LQE2022-55 |
In this talk, we present the first demonstration of free-space optical (FSO) communication using a photonic-crystal surf... [more] | OCS2022-57 OPE2022-92 LQE2022-55 pp.25-29 |
| OFT | 2022-10-14 15:20 |
Kanagawa | Kanagawa-Kenmin Center (Primary: On-site, Secondary: Online) |
Analog IFoF Mobile Fronthaul based on SDM/WDM/SCM Accommodating 576 channel (1.314 Tbit/s) Wireless Signals Shinji Nimura, Kazuki Tanaka, Shota Ishimura, Kosuke Nishimura, Ryo Inohara, Takehiro Tsuritani, Masatoshi Suzuki (KDDI Research) OFT2022-36 |
We have demonstrated an analog IFoF-based mobile fronthaul with SCM, WDM, and SDM for the realization of cell-free massi... [more] | OFT2022-36 pp.77-80 |
| MWPTHz, EST, MW, EMT, OPE, IEE-EMT [detail] | 2022-07-19 17:00 |
Hokkaido | Asahikawa Civic Culture Hall (Primary: On-site, Secondary: Online) |
Photodiode-Integrated 8×8 Array-Antenna Module for Analog-RoF Supporting 40-GHz 5G Systems Shinji Nimura, Shota Ishimura, Kazuki Tanaka, Kosuke Nishimura, Ryo Inohara (KDDI Research) EMT2022-31 MW2022-55 OPE2022-34 EST2022-32 MWPTHz2022-29 |
An 8×8 40-GHz beamforming antenna module integrated with PD and RF circuits was developed and demonstrated with the comb... [more] | EMT2022-31 MW2022-55 OPE2022-34 EST2022-32 MWPTHz2022-29 pp.113-116 |
| OPE, OCS, OFT (Joint) [detail] |
2021-02-18 15:50 |
Online | Online | Photonic generation of wideband electrical PM signal using the Armstrong method Shota Ishimura, Hsuan-Yun Kao, Kazuki Tanaka, Kosuke Nishimura, Ryo Inohara, Takehiro Tsuritani, Masatoshi Suzuki (KDDI Research, Inc.) OCS2020-43 OPE2020-80 |
Recently, there have been several reports on analog-based mobile front haul systems. We have also demonstrated high-fide... [more] | OCS2020-43 OPE2020-80 pp.1-5(OCS), pp.21-25(OPE) |
| EMT, MWP, PN, IEE-EMT [detail] | 2021-01-21 14:55 |
Online | Online | Demonstration of 5G Mobile Network System based on hybrid IFoF and RoF/RoMMF links Hsuan-Yun Kao (KDDI Research), Hiroki Yasuda (Yazaki), Shota Ishimura, Kazuki Tanaka (KDDI Research), Takamitsu Aiba, Tomohiro Wakabayashi (Yazaki), Kosuke Nishimura (KDDI Research), Tetsuya Kawanishi (Waseda Univ.), Ryo Inohara (KDDI Research) PN2020-36 EMT2020-54 MWP2020-37 |
A proof-of-concept experiment is demonstrated for 5G end-to-end MFH system based on hybrid IFoF and RoF/RoMMF transmissi... [more] | PN2020-36 EMT2020-54 MWP2020-37 pp.37-41 |
| CS, IN, NS, NV (Joint) |
2020-09-10 11:40 |
Online | Online | [Invited Lecture]
Transmission Experiments on IF-over-Fiber Systems for Mobile Fronthaul Kazuki Tanaka, Hsuan-Yun Kao, Shota Ishimura, Kosuke Nishimura, Ryo Inohara (KDDI Research) CS2020-40 |
[more] | CS2020-40 pp.30-34 |
| OPE, LQE, OCS | 2019-11-11 16:45 |
Tokyo | Kikai-Shinko-Kaikan Bldg (Tokyo) | [Special Invited Talk]
SSBI-free SSB-DD transmission scheme using phase modulation for high-quality analog mobile fronthaul Shota Ishimura, Hsuan-Yun Kao, Kazuki Tanaka,, Kosuke Nishimura, Masatoshi Suzuki (KDDI Research) OCS2019-59 OPE2019-97 LQE2019-75 |
In this invited talk, we introduce a signal-to-signal beat interference (SSBI)-free direct-detection transmission system... [more] | OCS2019-59 OPE2019-97 LQE2019-75 pp.37-41 |
| OCS, LQE, OPE | 2019-10-17 15:35 |
Kagoshima | [Invited Talk (Young Researcher)]
Analog radio-over-fiber transmission technology for mobile fronthaul networks Shota Ishimura (KDDI Research, Inc.) OCS2019-36 OPE2019-74 LQE2019-52 |
This invited paper discusses the potential of the Intermediate Frequency over Fiber (IFoF) technology for future mobile ... [more] | OCS2019-36 OPE2019-74 LQE2019-52 pp.49-52 |
|
| LQE, OPE, CPM, EMD, R | 2019-08-23 09:55 |
Miyagi | [Invited Talk]
Simplified optical transceiver configurations for low-cost coherent transmission Takuo Tanemura (Univ. Tokyo), Shota Ishimura (Univ. Tokyo/KDDI Research), Peng Zhou, Takahiro Suganuma, Yoshiaki Nakano (Univ. Tokyo) R2019-30 EMD2019-28 CPM2019-29 OPE2019-57 LQE2019-35 |
[more] | R2019-30 EMD2019-28 CPM2019-29 OPE2019-57 LQE2019-35 pp.51-54 |
|
| OCS, CS (Joint) |
2019-01-17 15:05 |
Okinawa | Nobumoto Ohama Memorial Hall (Ishigaki Island) | [Special Invited Talk]
Technical Trends of Mobile Fronthaul/Backhaul from 5G and Beyond Kosuke Nishimura, Shota Ishimura, Abdelmoula Bekkali, Kazuki Tanaka, Haruhisa Hirayama, Yu Tsukamoto, Ryo Inohara, Shinobu Nanba, Masatoshi Suzuki (KDDI Research, Inc.) CS2018-91 |
(Advance abstract in Japanese is available) [more] | CS2018-91 pp.25-30 |
| OPE, LQE, OCS | 2018-10-19 15:30 |
Saga | DSP algorithms in Stokes vector receivers for short-reach optical transmission systems Shota Ishimura, Kosuke Nishimura (KDDI Research, Inc.) OCS2018-50 OPE2018-86 LQE2018-75 |
We propose novel blind polarization tracking algorithms for the Stokes vector receivers, applying the concept of the con... [more] | OCS2018-50 OPE2018-86 LQE2018-75 pp.121-125 |
|
| MWP | 2017-11-09 15:10 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Broadband IF-over-Fiber Transmission with Parallel IM/PM Transmitter Overcoming Dispersion-Induced RF Power Fading for High-Capacity Mobile Fronthaul Links Shota Ishimura (KDDI Research, Inc), Byung Gon Kim (KAIST), Kazuki Tanaka, Kosuke Nishimura (KDDI Research, Inc), Hoon Kim, Yun C. Chung (KAIST), Masatoshi Suzuki (KDDI Research, Inc) MWP2017-47 |
We demonstrate a high-capacity IF-over-Fiber (IFoF) transmission using a parallel Intensity modulator (IM) /phase modula... [more] | MWP2017-47 pp.13-17 |
| MWP | 2017-05-11 14:20 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | [Invited Talk]
Optical and Radio Converged Access Network for Accommodating Mobile Services in Beyond-5G Era Kosuke Nishimura, Shinobu Nanba, Kazuki Tanaka, Shota Ishimura, Masatoshi Suzuki (KDDI Research) MWP2017-3 |
In this report, optical and radio converged access network for accommodating 5G and beyond mobile services is overviewed... [more] | MWP2017-3 pp.13-17 |
| ITE-BCT, OCS, OFT, IEE-CMN (Joint) [detail] |
2014-11-14 13:25 |
Hiroshima | Experimental demonstration of 8-state Trellis-coded 4D-QPSK optical modulation scheme Shota Ishimura, Kazuro Kikuchi (Univ. of Tokyo) OCS2014-88 |
Recently, in coherent optical communication systems, 4-dimesnional (4D) modulation formats designed by using two degrees... [more] | OCS2014-88 pp.71-76 |
|
| LQE, OCS, OPE | 2013-10-25 17:35 |
Fukuoka | Multi-dimensional modulation and demodulation schemes in coherent optical communication systems Shota Ishimura, Kazuro Kikuchi (Univ. of Tokyo) OCS2013-81 OPE2013-127 LQE2013-97 |
In newly-developed coherent optical communication systems, we can employ four-dimensional optical modulation including t... [more] | OCS2013-81 OPE2013-127 LQE2013-97 pp.159-164 |
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