Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
OCS, LQE, OPE |
2023-10-19 15:15 |
Kochi |
(Primary: On-site, Secondary: Online) |
Impact of Reflections at MMI Combiner in Mach-Zehnder Silicon Optical Modulators: Towards Extrinsic OMA Enhancement Tadashi Murao (Mitsubishi Electric), Tsuyoshi Horikawa (Tokyo Tech.) OCS2023-34 OPE2023-89 LQE2023-36 |
The realization of high dynamic extinction ratio (ER) and optical modulation amplitude (OMA) while keeping the optical a... [more] |
OCS2023-34 OPE2023-89 LQE2023-36 pp.37-40 |
OPE, OCS, LQE |
2022-10-20 15:45 |
Ehime |
(Primary: On-site, Secondary: Online) |
Theoretical and Experimental Investigation of Frequency Chirp Induced by Inter-Arm Imbalance in Mach-Zehnder Silicon Optical Modulators Tadashi Murao, Jun Ushida, Hiroyuki Takahashi, Masatoshi Tokushima, Akemi Shiina, Tsuyoshi Horikawa (PETRA) OCS2022-22 OPE2022-68 LQE2022-31 |
Characteristic variations caused by nonuniformities in the fabrication process are inevitable in carrier-depletion Mach–... [more] |
OCS2022-22 OPE2022-68 LQE2022-31 pp.28-33 |
OCS, OPE, LQE |
2021-10-22 16:30 |
Online |
Online |
Compact Model and Parametric Extraction for Optical Phase Shifters in Carrier-Depletion Mach-Zehnder Silicon Modulators Tadashi Murao, Jun Ushida, Hiroyuki Takahashi, Masatoshi Tokushima, Akemi Shiina, Tsuyoshi Horikawa (PETRA) OCS2021-18 OPE2021-38 LQE2021-17 |
Testing processes in silicon photonics are totally different from electronics and reduction of testing time has been an ... [more] |
OCS2021-18 OPE2021-38 LQE2021-17 pp.27-32 |
OCS, OPE, LQE |
2021-10-22 16:55 |
Online |
Online |
Theoretical and Experimental Investigation of OMA Penalty by Inter-Arm Imbalance in Mach-Zehnder Silicon Optical Modulators Tadashi Murao, Jun Ushida, Hiroyuki Takahashi, Masatoshi Tokushima, Akemi Shiina, Tsuyoshi Horikawa (PETRA) OCS2021-19 OPE2021-39 LQE2021-18 |
In this paper, an inter-arm imbalance and its impact on the optical modulation amplitude (OMA) are investigated for carr... [more] |
OCS2021-19 OPE2021-39 LQE2021-18 pp.33-38 |
PN |
2020-03-02 15:55 |
Kagoshima |
(Cancelled but technical report was issued) |
[Invited Talk]
High Speed Optical Module for Ethernet Nobuo Ohata, Mizuki Shirao, Yosuke Kawamoto, Tadashi Murao, Masashi Binkai, Yudai Imai, Hayato Sano, Hiromitsu Itamoto, Kiyotomo Hasegawa (Mitsubishi Electric) PN2019-57 |
[more] |
PN2019-57 pp.25-29 |
OCS, LQE, OPE |
2019-10-17 09:35 |
Kagoshima |
|
Efficient Optical Alignment Technique for Multi-Lane TOSAs with Integrated Multiplexing with Free Space Optics Tadashi Murao, Keita Mochizuki, Kazutaka Ikeda, Mizuki Shirao, Kiyotomo Hasegawa, Hiroshi Aruga (Mitsubishi Electric) OCS2019-27 OPE2019-65 LQE2019-43 |
An efficient and low-cost optical alignment technique is for the first time established for compact multi-lane transmitt... [more] |
OCS2019-27 OPE2019-65 LQE2019-43 pp.1-6 |
PN |
2018-09-04 09:30 |
Hokkaido |
Hotel DAIHEIGEN (Tokachi) |
[Invited Talk]
Assembly Technologies for Integrated Optical Transmitter/Receiver Modules for Optical Communication Systems Keita Mochizuki, Tadashi Murao, Masamichi Nogami, Hiroshi Aruga (Mitsubishi Electric Corp.) PN2018-20 |
The rapid growth of data traffic requires high capacity optical transmission systems. To meet this demand, the baud rate... [more] |
PN2018-20 pp.33-36 |
OCS, OPE, LQE |
2017-10-27 11:20 |
Kumamoto |
Josaien, Sakuranobaba |
High Accuracy Lens Assembly Technologies for downsizing of multi-lane integrated optical module Keita Mochizuki, Tadashi Murao, Yoshiyuki Kamo, Nobuyuki Yasui, Masatomo Mikuni, Koji Kamiyama, Takahiro Yoshimoto, Daisuke Echizenya, Masaya Shimono, Chinatsu Sanda, Hidekazu Kodera, Masamichi Nogami (Mitsubishi Electric) OCS2017-51 OPE2017-83 LQE2017-56 |
Two precise lens-assembly techniques based on the adhesive bonding and hammering were proposed. These techniques allow u... [more] |
OCS2017-51 OPE2017-83 LQE2017-56 pp.77-80 |
LQE |
2016-12-16 13:55 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
[Invited Talk]
Roadmap of optical device packaging Hiroshi Aruga, Keita Mochizuki, Tadashi Murao, Mizuki Shirao (Mitsubishi Electric Co.) LQE2016-102 |
[more] |
LQE2016-102 pp.29-31 |
LQE, LSJ |
2015-05-22 15:20 |
Ishikawa |
|
Integrated Spatial Optical System for Compact 100GbE Transmitter Optical Sub-Assemblies Using Lens Positional Control by Laser Irradiation Tadashi Murao, Nobuyuki Yasui, Takuro Shinada, Yudai Imai, Koichi Nakamura, Masaya Shimono, Hidekazu Kodera, Yoshimichi Morita, Asami Uchiyama, Haruki Koyanagi, Hiroshi Aruga (Mitsubishi Electric) LQE2015-19 |
A compact transmitter optical sub-assembly (TOSA) is developed for 100 Gbps Ethernet (100GbE)/ OTU4 applications with a ... [more] |
LQE2015-19 pp.93-97 |
LQE, OCS, OPE |
2013-10-24 17:45 |
Fukuoka |
|
Lens Alignment Technique using High-Power Laser for Hybrid Integrated Multi-Channel Transmitter Optical Sub-Assemblies Tadashi Murao, Nobuyuki Yasui, Keita Mochizuki, Masaya Shimono, Hidekazu Kodera, Daisuke Morita, Takeshi Yamatoya, Hiroshi Aruga (Mitsubishi Electric) OCS2013-63 OPE2013-109 LQE2013-79 |
We propose a precise submicron alignment technique for lenses employing high-power laser irradiation. We investigate the... [more] |
OCS2013-63 OPE2013-109 LQE2013-79 pp.71-74 |
ITE-BCT, OCS, OFT, IEE-CMN (Joint) [detail] |
2010-11-18 14:15 |
Osaka |
SEI Ikoma Seminar House |
Multiple resonant coupling mechanism for higher-order-modes' suppression in all-solid photonic bandgap fibers with heterostructured cladding Tadashi Murao, Kunimasa Saitoh, Masanori Koshiba (Hokkaido Univ.) OFT2010-41 |
In this work, we propose a novel mechanism for suppression of higher-order modes (HOMs), namely multiple resonant coupli... [more] |
OFT2010-41 pp.15-19 |
OFT |
2009-05-28 15:45 |
Shizuoka |
|
Bend-Insensitive and Single-Mode Hetero-Cladding Structured Solid-Core Photonic Bandgap Fibers Tadashi Murao, Kunimasa Saitoh (Hokkaido Univ.), Toshiki Taru, Takuji Nagashima (Sumitomo Electric), Kuniaki Maeda (Hokkaido Univ.), Takashi Sasaki (Sumitomo Electric), Masanori Koshiba (Hokkaido Univ.) OFT2009-7 |
Solid-core photonic bandgap fibers (SC-PBGFs) guide light along the fiber length in the low-index defected core region b... [more] |
OFT2009-7 pp.31-34 |
OFT, OCS, ITE-BCT, IEE-CMN (Joint) [detail] |
2008-11-21 08:45 |
Oita |
|
Analysis of bending loss in solid-core photonic bandgap fibers Tadashi Murao, Kunimasa Saitoh, Masanori Koshiba (Hokkaido Univ.) OFT2008-59 |
Solid-core photonic bandgap fibers (SC-PBGFs) have gathered much attention because of its intriguing transmission band p... [more] |
OFT2008-59 pp.65-70 |
OFT, OCS, ITE-BCT, IEE-CMN (Joint) [detail] |
2008-11-21 09:10 |
Oita |
|
Design of thermo-tunable couplers based on solid core photonic band-gap fibers Ryuichi Yoshida, Yukihiro Tsuchida, Tadashi Murao, Kunimasa Saitoh, Masanori Koshiba (Hokkaido Univ.) OFT2008-60 |
In this work, we propose low polarization-dependent thermo-tunable couplers based on solid-core photonic band-gap fibers... [more] |
OFT2008-60 pp.71-76 |
OPE, OFT |
2008-03-07 13:00 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
Structural optimization of air-guiding photonic bandgap fibers for realizing ultimate low-loss waveguides Tadashi Murao, Kunimasa Saitoh, Masanori Koshiba (Hokkaido Univ.) OFT2007-66 OPE2007-185 |
The existence of surface modes is the main drawback and the reduction of the fiber losses is not sufficient in 6-fold sy... [more] |
OFT2007-66 OPE2007-185 pp.21-26 |