Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Tatsuya Usuki"'
Autor:
Koichi Takemura, Kenji Mizutani, Takanori Shimizu, Shigeru Nakamura, Hiroshi Yamaguchi, Yutaka Urino, Tatsuya Usuki
Publikováno v:
ECOC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08a4b0358f64932bca156ed2ef061b89
https://doi.org/10.1109/ecoc52684.2021.9606014
https://doi.org/10.1109/ecoc52684.2021.9606014
Publikováno v:
HPC Asia
To solve the inter-node bandwidth bottleneck in parallel computing systems, we propose a wavelength-routing inter-node interconnect "Optical Hub". The physical topology of Optical Hub is star network, which leads to advantages in term of its throughp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18dd01387037ae20c66028fc3206e45d
https://doi.org/10.1145/3368474.3368495
https://doi.org/10.1145/3368474.3368495
Publikováno v:
Journal of Lightwave Technology. 36:1959-1969
A precise device model of a silicon forward-biased PIN phase shifter was developed to realize a codesign of an integrated multilevel optical transmitter combining a compact silicon-based Mach–Zehnder modulator (MZM) and a low-power CMOS driver circ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f5388203f733b0d6b3a6b31c93aad62
https://doi.org/10.1109/jlt.2018.2797184
https://doi.org/10.1109/jlt.2018.2797184
Autor:
Yu Tanaka, Seok-Hwan Jeong, Shigeaki Sekiguchi, Takasi Simoyama, Tsuyoshi Aoki, Toshihiko Mori, Ken Morito, Shinsuke Tanaka, Tatsuya Usuki
Publikováno v:
Journal of Lightwave Technology. 36:1275-1280
A highly power-efficient silicon (Si) photonic PAM4 transmitter was developed by integrating a Si segmented Mach–Zehnder modulator and a CMOS driver chip. Si p-i-n-type phase shifters are directly driven with a CMOS inverter driver array to realize
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f830544cffe578ccb6fdd3a56d288336
https://doi.org/10.1109/jlt.2018.2799965
https://doi.org/10.1109/jlt.2018.2799965
Autor:
Tatsuya Usuki
Publikováno v:
2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD).
We developed S-matrix analyzer for 3D-fullwave in curvilinear coordinates that can correspond to arbitrary shape of optical devices. The analyzer demonstrates propagation property for 90° bend of Si optical waveguide.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3286e2e6457646a2f446e9b70f858eba
https://doi.org/10.1109/nusod.2019.8806798
https://doi.org/10.1109/nusod.2019.8806798
Autor:
Yutaka Urino, Yasuhiko Arakawa, Tatsuya Usuki, Koji Yamada, Takahiro Nakamura, Kenji Mizutani, Tsuyoshi Horikawa, Nobuaki Hatori, Junichi Fujikata
Publikováno v:
Journal of Lightwave Technology. 33:1223-1229
We previously proposed a photonics-electronics convergence system to solve bandwidth bottleneck problems among large-scale integrations (LSIs) and demonstrated a high bandwidth density with silicon optical interposers at room temperature. For practic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30ad16df449a6b5302b646de036c1ba8
https://doi.org/10.1109/jlt.2014.2380811
https://doi.org/10.1109/jlt.2014.2380811
Autor:
T. Mori, T. Aoki, Seok-Hwan Jeong, Yu Tanaka, Shigeaki Sekiguchi, Ken Morito, Shinsuke Tanaka, Tatsuya Usuki, Takasi Simoyama
Publikováno v:
ECOC
A highly-power-efficient PAM4 silicon photonic transmitter was developed by integrating segmented PIN Mach-Zehnder modulator and CMOS inverter driver. A passive RC equalizing technique successfully enabled clear eye-opening of PAM4 signal up to 56Gbp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d59ad7843a50824fa15bf8ef0310de5
https://doi.org/10.1109/ecoc.2017.8346037
https://doi.org/10.1109/ecoc.2017.8346037
Autor:
Tatsuya Usuki
Publikováno v:
2017 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD).
We developed 3D-fullwave S-matrix analyzer. The S-matrix can shows details of the scattered-waves from optical sturcture in frequency domain.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c73b5c41ca2819c077ca01e37ef6aca3
https://doi.org/10.1109/nusod.2017.8009997
https://doi.org/10.1109/nusod.2017.8009997
Autor:
Tsuyoshi Horikawa, Keiji Koshino, Miyoshi Seki, Naoki Hirayama, Suguru Akiyama, Yoshiji Noguchi, Munehiro Toyama, Takeshi Akagawa, Tatsuya Usuki, Takeshi Baba, Masahiko Imai
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 19:74-84
We developed PIN-diode-based silicon Mach-Zehnder modulators, which have side-wall-gratings in the phase-shifter sections. Such passive waveguides with gratings were fabricated using ArF immersion lithography, which showed a small scattering loss of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de6c0670fecbefee0aa5c4b933465065
https://doi.org/10.1109/jstqe.2013.2278438
https://doi.org/10.1109/jstqe.2013.2278438
Publikováno v:
Optics express. 23(26)
We investigated the broadband operations of a silicon Mach-Zehnder modulator (MZM) based on a forward-biased-PIN diode. The phase shifter was integrated with a passive-circuit equalizer to compensate for the narrowband characteristics of the diodes,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1aab9b546c0867afedfe751ebf35c10
https://pubmed.ncbi.nlm.nih.gov/26831962
https://pubmed.ncbi.nlm.nih.gov/26831962