Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Kiyoshi Kishioka"'
Autor:
Kiyoshi Kishioka, Mio Kamigaichi
Publikováno v:
IEEJ Transactions on Electronics, Information and Systems. 138:1305-1312
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8278b6ec2aa2cb8d772abcb3f8733dd0
https://doi.org/10.1541/ieejeiss.138.1305
https://doi.org/10.1541/ieejeiss.138.1305
Publikováno v:
Universal Journal of Electrical and Electronic Engineering. 3:85-89
The coupling coefficients of two parallel metal-insulator-metal (MIM) plasmonic waveguides are investigated using the analysis of the coupled-mode equations. The frequency characteristics of the power transmittance of a MIM waveguide coupled with a r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b4908a8e02a8d017a243ca04a943e56
https://doi.org/10.13189/ujeee.2015.030303
https://doi.org/10.13189/ujeee.2015.030303
Autor:
Kiyoshi Kishioka, Takeshi Yamamoto
Publikováno v:
IEEJ Transactions on Electronics, Information and Systems. 129:1047-1055
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f234a3a89ae40489cdb2ad4d4f2fc914
https://doi.org/10.1541/ieejeiss.129.1047
https://doi.org/10.1541/ieejeiss.129.1047
Publikováno v:
IEICE Transactions on Electronics. :1041-1052
This paper describes improvement of the gain in the Er-doped lithium niobate waveguide optical amplifiers. A new configuration is proposed, which is loaded with a high-index cladding for the purpose of realizing a larger overlap between the guided li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::537873d127259eb201862c944d9ad25c
https://doi.org/10.1093/ietele/e88-c.5.1041
https://doi.org/10.1093/ietele/e88-c.5.1041
Simple measurement technique for the coupling coefficient of integrated optical directional couplers
Autor:
Gar Lam Yip, Kiyoshi Kishioka
Publikováno v:
Applied optics. 31(15)
A simple technique for measuring the coupling coefficient and the power transfer efficiency of the optical directional coupler is presented. This technique consists of measuring Fraunhofer diffraction patterns emerging from the output prism coupler t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2984328c31efaa0c2de51de415f2939e
https://pubmed.ncbi.nlm.nih.gov/20725214
https://pubmed.ncbi.nlm.nih.gov/20725214
Autor:
Kiyoshi Kishioka
Publikováno v:
Applied optics. 29(3)
To improve the power spectral response of directional coupler type demultiplexers, the three-guide coupler with varying coupling coefficients along the light propagation direction is theoretically examined. A new configuration of the three-guide coup
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a500e4a45a1f84c8087ff76f4e9138b
https://pubmed.ncbi.nlm.nih.gov/20556113
https://pubmed.ncbi.nlm.nih.gov/20556113
Autor:
Kiyoshi Kishioka
Publikováno v:
Applied optics. 27(11)
We discuss the performance of a lightwave coupler utilizing a tapered buffer layer. The coupler with a ridge waveguide is fabricated on a glass substrate and high coupling efficiencies of 75% and 50% are measured for the operations of coupling from t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf6e8238d4c8c573245efe600144986a
https://pubmed.ncbi.nlm.nih.gov/20531756
https://pubmed.ncbi.nlm.nih.gov/20531756
Autor:
Kiyoshi Kishioka, Masahiro Hashimoto
Publikováno v:
Applied optics. 21(2)
The structure of a coupler using a periodic multilayer between two waveguides is studied from the aspect of fabrication technology. The coupling is expected to be by Bragg instead of conventional evanescent waves. Because of the successful use of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf7fbfeac715921d521475cf9725f50e
https://pubmed.ncbi.nlm.nih.gov/20372448
https://pubmed.ncbi.nlm.nih.gov/20372448
Autor:
Masahiro Hashimoto, Kiyoshi Kishioka
Publikováno v:
Applied optics. 19(16)
A measurement technique is presented for determining simultaneously the refractive-index difference between a multilayered medium and the layer thickness. The technique is simple because it is based on measurement of the standard reflection character
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b90882e74ec91a5a5cf49cf60d9d6996
https://pubmed.ncbi.nlm.nih.gov/20234493
https://pubmed.ncbi.nlm.nih.gov/20234493
Publikováno v:
Optics letters. 15(14)
Planar optical waveguides were fabricated by using an electric-field-assisted potassium-ion exchange in soda-lime glass substrates. Mode index measurements for both the TE and TM modes were made for the purpose of establishing formulas for the effect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cd7b7d85f54da92ad8746c195f14a00
https://pubmed.ncbi.nlm.nih.gov/19768079
https://pubmed.ncbi.nlm.nih.gov/19768079