Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Norihiro Ishikura"'
Publikováno v:
26th International Conference on Optical Fiber Sensors.
We design silicon photonics based system-on-chip multi-gas sensor and experimentally demonstrate the temperature insensitive CO2 gas sensing. In the preliminary measurement results, we observe a sensitivity of ~500 ppm based on the optical L-band wav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::805029f36933cb91a87508f0782aca78
https://doi.org/10.1364/ofs.2018.the46
https://doi.org/10.1364/ofs.2018.the46
Publikováno v:
Journal of Lightwave Technology. 33:304-310
We propose and demonstrate triangular-shaped coupled Si microrings for robust wavelength multi-/demultiplexing. Thanks to the geometry, stable interring couplings are obtained at straight waveguides, and heaters for thermal tuning can be isolated max
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2765a4d81738f5cd27627cc7588c45c5
https://doi.org/10.1109/jlt.2014.2381771
https://doi.org/10.1109/jlt.2014.2381771
Autor:
Keisuke Kondo, Norihiro Ishikura, Toshihiko Baba, Takuya Tamura, Kenji Miyasaka, Yosuke Terada
Publikováno v:
Optics letters. 42(22)
Silica-clad silicon photonic crystal waveguides (PCWs) are promising components for various applications because of their simple fabrication and generation of slow light. However, an optical loss higher than 4 dB occurs when they are simply coupled t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e0690b4bcdcf3ca03310c30dfa1433a
https://pubmed.ncbi.nlm.nih.gov/29140345
https://pubmed.ncbi.nlm.nih.gov/29140345
Autor:
Kensuke Ogawa, Tsung-Yang Liow, Mikhail Illarionov, Dim-Lee Kwong, Kazuhiro Goi, Xiaoguang Tu, Guo-Qiang Lo, Ken-ichi Kitayama, Yuki Yoshida, Haike Zhu, Norihiro Ishikura
Publikováno v:
2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR).
We demonstrate high-speed modulations in dual-polarization (DP) quadrature phase shift keying and DP 16- and 32-quadrature amplitude modulation formats with radio frequency driving voltage as low as 2 V ppd using a packaged monolithic silicon DP in-p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7df45c1f654a2fa071d1ff67dab4fcaf
https://doi.org/10.1109/cleopr.2017.8119066
https://doi.org/10.1109/cleopr.2017.8119066
Autor:
Guo-Qiang Lo, Xiaoguang Tu, Tsung-Yan Liow, Shinichi Sakamoto, Norihiro Ishikura, Dim-Lee Kwong, Hiroki Ishihara, Kazuhiro Goi, Kensuke Ogawa, Yasuhiro Mashiko, Haike Zhu, Akira Oka
Publikováno v:
2016 Progress in Electromagnetic Research Symposium (PIERS).
Rapid growth in the demand for data traffic has facilitated the introduction of high-capacity digital coherent transmission for long-haul optical fiber networks. For successful digital coherent transmission to metro-area networks or shorter ranges, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6e41820f12273568da7ded2b70b23b1
https://doi.org/10.1109/piers.2016.7735321
https://doi.org/10.1109/piers.2016.7735321
Autor:
Kensuke Ogawa, Norihiro Ishikura, Tsung-Yang Liow, Ching Eng Png, Xiaoguang Tu, Dim-Lee Kwong, Hiroki Ishihara, Kazuhiro Goi, Shinichi Sakamoto, Guo-Qiang Lo, Min Jie Sun, Soon Thor Lim
Publikováno v:
SPIE Proceedings.
This paper focuses on latest progress in experimental and theoretical studies on silicon-based carrier-depletion PNjunction phase shifters in terms of high modulation efficiency for energy-efficient photonic networks of high transmission capacity. Mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a17c6928e6090e62a92c276b1ee6417
https://doi.org/10.1117/12.2218184
https://doi.org/10.1117/12.2218184
Autor:
Kensuke Ogawa, Norihiro Ishikura, Hiroki Ishihara, Dim-Lee Kwong, Kazuhiro Goi, Tsung-Yang Liow, Guo-Qiang Lo, Xiaoguang Tu, Shinichi Sakamoto
Publikováno v:
OFC
We demonstrate 10-Gb/s high-on/off-contrast modulation of a carrier-depletion silicon Mach-Zehnder modulator having 3-mm rib-waveguide phase shifter driven with RF 3.6 VPP or lower at temperatures up to 130 °C without thermo-electric cooling.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af4170a35465fa5cf8b5bc613bd289dd
https://doi.org/10.1364/ofc.2016.w2a.23
https://doi.org/10.1364/ofc.2016.w2a.23
Publikováno v:
IEEE Journal of Quantum Electronics. 48:210-220
We demonstrate 10 Gb/s modulation in a 200 μm photonic crystal silicon optical modulator, in both carrier-injection and depletion modes. In particular, this is the first demonstration of 10 Gb/s modulation in depletion mode and without pre-emphasis,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff628ff122237fa3adb27bbd26e4b0e9
https://doi.org/10.1109/jqe.2011.2174338
https://doi.org/10.1109/jqe.2011.2174338
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 16:192-199
In this paper, we demonstrate state-of-the-art slow light in silicon-on-insulator photonic crystal coupled waveguide, which allows slow light pulse transmission and its tunable delay by means of structural chirping. The key idea of this study is the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88d1489a3e260ced05f1bcb2c9f1d1b2
https://doi.org/10.1109/jstqe.2009.2032515
https://doi.org/10.1109/jstqe.2009.2032515
Publikováno v:
Optics express. 23(16)
We propose and demonstrate an on-chip optical correlator, in which two types of photonic crystal slow-light waveguides are integrated and operated as an optical delay scanner and a two-photon-absorption photodetector. The footprint of the device, whi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::651caf9784487f47c525b226a05d6c29
https://pubmed.ncbi.nlm.nih.gov/26367929
https://pubmed.ncbi.nlm.nih.gov/26367929