Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Takeshi Nishizawa"'
Autor:
Takumi Hinata, Yoshiki Hayama, Naoya Katsumata, Katsumi Nakatsuhara, Masayuki Takeda, Takeshi Nishizawa
Publikováno v:
2022 IEEE Photonics Conference (IPC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af112522d02033cfb5ab7ae7672dc140
https://doi.org/10.1109/ipc53466.2022.9975704
https://doi.org/10.1109/ipc53466.2022.9975704
Publikováno v:
IEICE Transactions on Electronics. :669-678
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24ff801e2eb6a256083483737f42662e
https://doi.org/10.1587/transele.2019ocp0007
https://doi.org/10.1587/transele.2019ocp0007
Autor:
Anton Lagosh, Benedikt Guldimann, Philippe Giaccari, Gregoire Kerr, Takeshi Nishizawa, Berit Ahlers, Peyman Rahnama, Niels Quack
Publikováno v:
2022 IEEE 35th International Conference on Micro Electro Mechanical Systems Conference (MEMS).
We present design, fabrication and experimental characterization of a multichannel Smart Slit Assembly for next generation spectrometers, based on an array of 40 variable optical attenuators employing MEMS shutters integrated with large core multimod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::710f5d7df50b413bc48e850c98d4e9b7
https://doi.org/10.1109/mems51670.2022.9699546
https://doi.org/10.1109/mems51670.2022.9699546
Autor:
Takumi Hinata, Masayuki Takeda, Takeshi Nishizawa, Katsumi Nakatsuhara, Yoshiki Hayama, Naoki Sawayanagi, Tasuku Touma
Publikováno v:
2021 26th Microoptics Conference (MOC).
We improved the dry-etching process for Nb 2 O 5 horizontal slot waveguides to suppress roughness in etched surfaces. We have also fabricated horizontal slot waveguides by the improved process. In the fabricated waveguides, the smooth etched surface
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fce751860b6ae8d61e9a7d63fbb31346
https://doi.org/10.23919/moc52031.2021.9598139
https://doi.org/10.23919/moc52031.2021.9598139
Autor:
Anton Lagosh, Hamed Sattari, Mauro Melozzi, Takeshi Nishizawa, Gergely Huszka, Gregoire Kerr, Benedikt Guldimann, Niels Quack, Peyman Rahnama, Berit Ahlers
Publikováno v:
MOEMS and Miniaturized Systems XX.
We present the concept and detailed design of a Smart Slit Assembly for next generation spectrometers, and we experimentally demonstrate operation of an individual 221 mu m x 111 mu m smart slit channel employing a MEMS actuated shutter to continuous
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7f23b1a1a91cde48a95837f2ab02db3
https://doi.org/10.1117/12.2583149
https://doi.org/10.1117/12.2583149
Autor:
Mauro Melozzi, Gregoire Kerr, Gergely Huszka, Berit Ahlers, Benedikt Guldimann, Peyman Rahnama, Anton Lagosh, Hamed Sattari, Niels Quack, Takeshi Nishizawa
Publikováno v:
2021 IEEE 34th International Conference on Micro Electro Mechanical Systems (MEMS).
We present the concept and design, and we report on the experimental performance of a broadband Variable Optical Attenuator (VOA) for integration with large-core rectangular multimode waveguides. Operation of an individual 221 mu m x 111 mu m optical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66dae45f3ccf86dcc4a70a30e766a249
https://doi.org/10.1109/mems51782.2021.9375396
https://doi.org/10.1109/mems51782.2021.9375396
Autor:
Yoshiki Hayama, Katsumi Nakatsuhara, Ryoma Ito, Sho Inamori, Masayuki Takeda, Takeshi Nishizawa
Publikováno v:
2019 24th Microoptics Conference (MOC).
We fabricated an Nb 2 O 5 tunable waveguide resonator with ferroelectric liquid crystal. The design and characteristics of the fabricated devices are reported herein. Bistable tuning operation with a 2.2-nm shift in wavelength characteristics was obt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbf5a41b1f0f93d58597bb4139c72e50
https://doi.org/10.23919/moc46630.2019.8982833
https://doi.org/10.23919/moc46630.2019.8982833
Autor:
Natsuki Iijima, Masayuki Takeda, Katsumi Nakatsuhara, Mao Hijikata, Takeshi Nishizawa, Satoru Noge, Naoya Katsumata, Yoshiki Hayama, Taka Yamaguchi
Publikováno v:
2019 24th Microoptics Conference (MOC).
Ce:YIG thin films deposited on the silicon substrates were fabricated and their crystalline quality was investigated. In addition, a silicon waveguide Mach-Zehnder interferometer having a crystallized Ce:YIG cladding was fabricated. The transmitted w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::586f29733cb00274e5f8c464b65f7e9d
https://doi.org/10.23919/moc46630.2019.8982809
https://doi.org/10.23919/moc46630.2019.8982809
Publikováno v:
OECC/PSC
In order to increase the phase shift effect due to the refractive index change of the cladding, optical switches using Nb 2 O 5 core waveguides were studied. A wavelength shifting operation was obtained by the fabricated device.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e4c1222fe8bc3dcacb44db51006521f
https://doi.org/10.23919/ps.2019.8817807
https://doi.org/10.23919/ps.2019.8817807
Publikováno v:
OECC/PSC
We propose a fabrication process for Nb 2 O 5 horizontal slot waveguides using a thin film deposition and selective etching technique. We have also fabricated a horizontal slot structure as a preliminary experiment.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6f341ec916d2e675d837cffcb6fdc4f
https://doi.org/10.23919/ps.2019.8817637
https://doi.org/10.23919/ps.2019.8817637