Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Naoki Shamoto"'
Autor:
K. Okamoto, Takao Suzuki, T. Shikama, Kentaro Toh, Naoki Shamoto, Bun Tsuchiya, Shinji Nagata
Publikováno v:
Journal of Nuclear Materials. :1503-1506
The radiation induced optical transmission loss of heat-treated fused silica core optical fibers has been investigated under gamma-ray irradiation. Observed radiation induced transmission loss indicated temperature dependence, which suggests that the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e36bb5cfcbe12007d76d1ea53c20df7
https://doi.org/10.1016/j.jnucmat.2004.04.243
https://doi.org/10.1016/j.jnucmat.2004.04.243
Publikováno v:
Fusion Engineering and Design. :179-183
Oxyhydrate (OH) doped and fluorine (F) doped fused-silica core optical fibers were irradiated in a fission reactor at 370–380 K with a fast neutron flux of about 5×1016n/m2s and a gamma-ray dose rate of about 500 Gy/s for about 24 days. Oxyhydrate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::020b1b660f4e64d000b12ed962766e52
https://doi.org/10.1016/s0920-3796(00)00463-4
https://doi.org/10.1016/s0920-3796(00)00463-4
Publikováno v:
Journal of Non-Crystalline Solids. 179:339-344
In order to make optical fibers with excellent radiation resistance characteristics in a wide wavelength region, fluorine-doped silica-core fibers instead of pure-silica-core fibers were studied. Also the effect of H 2 doping fluorine-doped fibers wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbe9d5ac0109964d173a64c4795639bf
https://doi.org/10.1016/0022-3093(94)90714-5
https://doi.org/10.1016/0022-3093(94)90714-5
Autor:
Hideo Kayano, Kazuo Sanada, Toshimasa Uramoto, Tsutomu Sagawa, Minora Narui, Naoki Shamoto, Tsunemi Kakuta, Tatsuo Shikama
Publikováno v:
Journal of Nuclear Materials. :421-425
Two kinds of optical fibers were irradiated in a fission reactor, JMTR (Japan Materials Testing Reactor), up to a 1.55 × 10 19 n/cm 2 fast neutron fluence and a 3.3 × 10 9 Gy ionizing dose at 370 K. Optical transmission spectra were measured in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9193823ebacce8c48a39d25137434d7
https://doi.org/10.1016/0022-3115(94)90097-3
https://doi.org/10.1016/0022-3115(94)90097-3
Autor:
Kentaro Toh, Shinichi Baba, Minoru Narui, Naoki Shamoto, Bun Tsuchiya, Shinji Nagata, Tsunemi Kakuta, Masahiro Ishihara, Tatsuo Shikama
Publikováno v:
SPIE Proceedings.
Applicability of fused silica core optical fibers to in-reactor dosimetry was demonstrated at elevated temperatures and a special irradiation rig was developed for realizing high-temperature optical dosimetry in a High Temperature Test Reactor (HTTR)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d995dc91c5e7cdd0fc069ceccee2612f
https://doi.org/10.1117/12.509582
https://doi.org/10.1117/12.509582
Publikováno v:
Applied optics. 41(32)
We experimentally demonstrate space-code-division multiple access (space-CDMA) based twodimensional (2-D) parallel optical interconnections by using image fibers and 8 x 8 vertical-cavity surface-emitting laser (VCSEL)/photo diode (PD) arrays. Two sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09541054db532760df795e8f610449d8
https://pubmed.ncbi.nlm.nih.gov/12440546
https://pubmed.ncbi.nlm.nih.gov/12440546
Autor:
Tatsuo Shikama, Bun Tsuchiya, Shinji Nagata, Naoki Shamoto, Kentaro Toh, Naofumi Ohtsu, Tsunemi Kakuta
Publikováno v:
SPIE Proceedings.
Retention and thermal release behavior of hydrogen isotopes in fused silica, synthesized silica and optical fibers were investigated by ion beam analysis technique. Initially contained H in the interior of the specimens is about 0.1~0.2 at.% at room
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5604d94f1055675717cae0160ef290a7
https://doi.org/10.1117/12.451744
https://doi.org/10.1117/12.451744
Publikováno v:
SPIE Proceedings.
Nine different fused silica core optical fibers were irradiated in a fission reactor up to an ionizing dose of 10 9 Gy and a fast neutron fluence of 10 23 n/m 2 at 400 K. One specimen, fluorine doped and specially sintered and annealed, showed good r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92ef8ffe409454c7326c751fc75f48bd
https://doi.org/10.1117/12.373279
https://doi.org/10.1117/12.373279
Publikováno v:
SPIE Proceedings.
The gradient-index rod lenses have been conventionally used as the objective lens of the ultrathin medical fiberscope. In this paper, we propose to apply the new hemispherical fiber lens for the ultrathin fiberscopes. The lens can be fabricated by at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d7a87362aac7ee8b3ae9dfdd3a35f63
https://doi.org/10.1117/12.271015
https://doi.org/10.1117/12.271015
Publikováno v:
SPIE Proceedings.
The ultrathin fiberscope, in which the outer diameter is under 1.0 mm, has made possible the direct observation of narrow portions within the human body. The fiberscope mainly consists of the imagefiber, the objective lens, and the illumination fiber
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1eb0c026e83684e33523f67aa2ce2371
https://doi.org/10.1117/12.180713
https://doi.org/10.1117/12.180713