Search Results - "Watanabe, Tatsuhiko"

Perpendicular Grating Coupler Based on a Blazed Antiback-Reflection Structure by Watanabe, Tatsuhiko, Ayata, Masafumi, Koch, Ueli, Fedoryshyn, Yuriy, Leuthold, Juerg

“…Silicon photonic grating couplers are demonstrated featuring a perfect vertical coupling and predicted coupling efficiencies of 87% and 78% with an apodized…”
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Plasmonic IQ modulators with attojoule per bit electrical energy consumption by Heni, Wolfgang, Fedoryshyn, Yuriy, Baeuerle, Benedikt, Josten, Arne, Hoessbacher, Claudia B., Messner, Andreas, Haffner, Christian, Watanabe, Tatsuhiko, Salamin, Yannick, Koch, Ueli, Elder, Delwin L., Dalton, Larry R., Leuthold, Juerg

“…Coherent optical communications provides the largest data transmission capacity with the highest spectral efficiency and therefore has a remarkable potential…”
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Low-loss plasmon-assisted electro-optic modulator by Haffner, Christian, Chelladurai, Daniel, Fedoryshyn, Yuriy, Josten, Arne, Baeuerle, Benedikt, Heni, Wolfgang, Watanabe, Tatsuhiko, Cui, Tong, Cheng, Bojun, Saha, Soham, Elder, Delwin L., Dalton, Larry. R., Boltasseva, Alexandra, Shalaev, Vladimir M., Kinsey, Nathaniel, Leuthold, Juerg

“…For nearly two decades, researchers in the field of plasmonics 1 —which studies the coupling of electromagnetic waves to the motion of free electrons near the…”
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2-D Grating Couplers for Vertical Fiber Coupling in Two Polarizations by Watanabe, Tatsuhiko, Fedoryshyn, Yuriy, Leuthold, Juerg

“…We demonstrate highly efficient couplers in a two-dimensional grating configuration for a vertical fiber-coupling fabricated in the silicon-on-insulator…”
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500 GHz plasmonic Mach-Zehnder modulator enabling sub-THz microwave photonics by Burla, Maurizio, Hoessbacher, Claudia, Heni, Wolfgang, Haffner, Christian, Fedoryshyn, Yuriy, Werner, Dominik, Watanabe, Tatsuhiko, Massler, Hermann, Elder, Delwin L., Dalton, Larry R., Leuthold, Juerg

“…Broadband electro-optic intensity modulators are essential to convert electrical signals to the optical domain. The growing interest in terahertz wireless…”
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Reduced Equalization Needs of 100 GHz Bandwidth Plasmonic Modulators by Baeuerle, Benedikt, Heni, Wolfgang, Hoessbacher, Claudia, Fedoryshyn, Yuriy, Josten, Arne, Haffner, Christian, Watanabe, Tatsuhiko, Uhl, Christopher, Hettrich, Horst, Elder, Delwin L., Dalton, Larry R., Moller, Michael, Leuthold, Juerg

“…As bit rates of optical interconnects increase, a large amount of complicated signal conditioning is needed to compensate for the insufficient bandwidth of…”
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Accurate Analysis of Crosstalk Between LP Quasi-Degenerate Modes Due to Offset Connection Using True Eigenmodes by Miura, Seiya, Watanabe, Tatsuhiko, Kokubun, Yasuo

“…Linearly polarized (LP) modes in few-mode fibers are not true eigenmodes but approximated modes constituting of linear combinations of true eigenmodes…”
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Full-set mode analysis of three-mode fibers calculated from polarization components of near-field pattern by Kokubun, Yasuo, Watanabe, Tatsuhiko, Kawata, Ryo, Morita, Kohei

“…We propose and demonstrate a novel mode analysis method that can provide a full set of amplitudes, phases, and polarization states of guided modes including…”
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Ultra-large number of transmission channels in space division multiplexing using few-mode multi-core fiber with optimized air-hole-assisted double-cladding structure by Watanabe, Tatsuhiko, Kokubun, Yasuo

“…The ultimate number of transmission channels in a fiber for the space division multiplexing (SDM) is shown by designing an air-hole-assisted double-cladding…”
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Laminated polymer waveguide fan-out device for uncoupled multi-core fibers by Watanabe, Tatsuhiko, Hikita, Makoto, Kokubun, Yasuo

“…A compact waveguide-type fan-out device for uncoupled multi-core fibers was demonstrated using a laminated polymer waveguide (LPW). The core spacing in the…”
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Effect of Treatment with Oral Calcitriol on Calcium Metabolism and Fasting Serum 25(OH)- or 1,25(OH) 2-Vitamin D Level in Japanese Postmenopausal Women by TSUKAMOTO, Yusuke, WATANABE, Tatsuhiko, NAKAGAMI, Tetsuo, MORISHITA, Kaoru

“…The aim of this study was to investigate the effect of daily oral administration of calcitriol on calcium metabolism in Japanese postmenopausal women. For this…”
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Coherent few mode demultiplexer realized as a 2D grating coupler array in silicon by Watanabe, Tatsuhiko, Bitachon, Bertold Ian, Fedoryshyn, Yuriy, Baeuerle, Benedikt, Ma, Ping, Leuthold, Juerg

“…We demonstrate an on-chip coherent mode scrambling demultiplexer for polarization multiplexed few mode signals. The device has been fabricated in the standard…”
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120 GBd plasmonic Mach-Zehnder modulator with a novel differential electrode design operated at a peak-to-peak drive voltage of 178 mV by Baeuerle, Benedikt, Heni, Wolfgang, Hoessbacher, Claudia, Fedoryshyn, Yuriy, Koch, Ueli, Josten, Arne, Watanabe, Tatsuhiko, Uhl, Christopher, Hettrich, Horst, Elder, Delwin L, Dalton, Larry R, Möller, Michael, Leuthold, Juerg

“…A new plasmonic Mach-Zehnder modulator is demonstrated at a bit rate of 120 Gb/s NRZ-OOK with low peak-to-peak driving voltages of 178 mV below the HD-FEC…”
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Large Spatial Channel (36-Core × 3 mode) Heterogeneous Few-Mode Multicore Fiber by Sakaguchi, Jun, Klaus, Werner, Delgado Mendinueta, Jose Manuel, Puttnam, Benjamin James, Luis, Ruben Soares, Awaji, Yoshinari, Wada, Naoya, Hayashi, Tetsuya, Nakanishi, Tetsuya, Watanabe, Tatsuhiko, Kokubun, Yasuo, Takahata, Taketoshi, Kobayashi, Tetsuya

“…We describe the design and characterization of a heterogeneous 36-core, three-mode fiber with three core types. Intercore crosstalk for LP 11 modes is…”
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Full mode analysis of vector components of degenerated LP modes in Few Mode Fibers from intensity profile through angled polarizer by Kokubun, Yasuo, Watanabe, Tatsuhiko, Morita, Kohei, Kawata, Ryo

“…We propose and demonstrate a novel mode analysis method which can obtain a full set of amplitude, phase, and polarization state of transmitted modes including…”
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Stacked waveguide type mode-evolutional multi/demultiplexer for LP01 LP11a and LP11b by Watanabe, Tatsuhiko, Kokubun, Yasuo

“…Mode-evolutional serial branching mode multi/demultiplexer for few-mode fiber was demonstrated using a stacked polymer waveguide. Owing to the stacked…”
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Plasmonics for microwave photonics in the THz range by Burla, Maurizio, Hoessbacher, Claudia, Heni, Wolfgang, Haffner, Christian, Salamin, Yannick, Fedoryshyn, Yuriy, Watanabe, Tatsuhiko, Massler, Hermann, Blatter, Tobias, Horst, Yannik, Elder, Delwin L., Dalton, Larry R., Leuthold, Juerg

“…THz frequencies offer enormous amounts of bandwidth, which could solve the current speed bottleneck for next-generation wireless communications. Recent reports…”
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Effect of Treatment with Oral Calcitriol on Calcium Metabolism and Fasting Serum 25(OH)- or 1,25(OH)2-Vitamin D Level in Japanese Postmenopausal Women by YUSUKE TSUKAMOTO, TATSUHIKO WATANABE, TETSUO NAKAGAMI, KAORU MORISHITA

“…The aim of this study was to investigate the effect of daily oral administration of calcitriol on calcium metabolism in Japanese postmenopausal women. For this…”
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Scaling of Space Division Multiplexed Transmission using Heterogeneous Single-mode and Few Mode Multi-Core Fibers by Kokubun, Yasuo, Watanabe, Tatsuhiko

“…The ultra large number of transmission channels, e.g. 389 channels in a fiber for space division multiplexing (SDM), is designed using an air-hole assisted…”
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High density and low cross talk design of heterogeneous multi-core fiber with air hole assisted double cladding by Watanabe, Tatsuhiko, Kokubun, Yasuo

“…A novel high-density heterogeneous uncoupled multi-core fiber was designed using an air hole assisted double cladding structure. Low cross talk of -62dB at…”
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