Search Results - "Yamada, Hirohito"

Compact silicon photonic wavelength-tunable laser diode with ultra-wide wavelength tuning range by Kita, Tomohiro, Tang, Rui, Yamada, Hirohito

“…We present a wavelength-tunable laser diode with a 99-nm-wide wavelength tuning range. It has a compact wavelength-tunable filter with high wavelength…”
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Narrow Spectral Linewidth Silicon Photonic Wavelength Tunable Laser Diode for Digital Coherent Communication System by Kita, Tomohiro, Rui Tang, Yamada, Hirohito

“…We demonstrated wavelength tunable laser diodes with Si-wire waveguide ring resonators as an external optical cavity. The footprint of the optical cavity…”
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Silicon Photonic Hybrid Ring-Filter External Cavity Wavelength Tunable Lasers by Kobayashi, Naoki, Sato, Kenji, Namiwaka, Masahiko, Yamamoto, Keisuke, Watanabe, Shinya, Kita, Tomohiro, Yamada, Hirohito, Yamazaki, Hiroyuki

“…Si-photonic hybrid ring external cavity wavelength tunable lasers by passive alignment techniques with more than 100-mW fiber-coupled power and linewidth…”
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Enhancement of Refractive Index Sensitivity Using Small Footprint S-Shaped Double-Spiral Resonators for Biosensing by Igarashi, Anh, Abe, Maho, Kuroiwa, Shigeki, Ohashi, Keishi, Yamada, Hirohito

“…We demonstrate an S-shaped double-spiral microresonator (DSR) for detecting small volumes of analytes, such as liquids or gases, penetrating a microfluidic…”
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Scattering-parameter model analysis of side-coupled plasmonic Fabry–Perot waveguide filters by Yu, Jiyao, Ohtera, Yasuo, Yamada, Hirohito

“…We modeled a compact side-coupled plasmonic Fabry–Perot (FP) waveguide filter using a combination of several fundamental waveguide parts, and compared its…”
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Compact 1 × N thermo-optic switches based on silicon photonic wire waveguides by Chu, Tao, Yamada, Hirohito, Ishida, Satomi, Arakawa, Yasuhiko

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Vertical-coupling optical interface for on-chip optical interconnection by Yamada, Hirohito, Nozawa, Michinao, Kinoshita, Masao, Ohashi, Keishi

“…We present a vertical-coupling optical interface with a grating coupler for transmitting and receiving optical signals between single-mode optical fibers and…”
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Lightwave propagation through a 120° sharply bent single-line-defect photonic crystal waveguide by Tokushima, Masatoshi, Kosaka, Hideo, Tomita, Akihisa, Yamada, Hirohito

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Long external cavity Si photonic wavelength tunable laser diode by Kita, Tomohiro, Nemoto, Keita, Yamada, Hirohito

“…We fabricated wavelength-tunable laser diodes with external cavity consist of Si photonic wire waveguide ring resonators. About 51.5 nm wavelength tuning…”
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Self-phase modulation at visible wavelengths in nonlinear ZnO channel waveguides by Teraoka, Edgar Yoshio Morales, Broaddus, Daniel H., Kita, Tomohiro, Tsukazaki, Atsushi, Kawasaki, Masashi, Gaeta, Alexander L., Yamada, Hirohito

“…We report the observation of nonlinear optical effects in the visible spectrum using ZnO channel waveguides. We demonstrate sixfold spectral broadening and a…”
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Optimum waveguide-core size for reducing device property distribution of Si-wire waveguide devices by Soma, Munetoshi, Kita, Tomohiro, Tanushi, Yuichiro, Toyama, Munehiro, Seki, Miyoshi, Yokoyama, Nobuyuki, Ohtsuka, Minoru, Yamada, Hirohito

“…We investigated the waveguide-core size distribution of ring resonators fabricated on a 300 mm silicon-on-insulator (SOI) wafer using a CMOS-compatible process…”
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Optical add-drop multiplexers based on Si-wire waveguides by Yamada, Hirohito, Chu, Tao, Ishida, Satomi, Arakawa, Yasuhiko

“…Ultrasmall optical add-drop multiplexers (OADMs) with Si-wire waveguides were demonstrated. Bragg grating reflectors based on Si-wire waveguides were developed…”
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Optical Crossing and Integration Using Hybrid Si-Wire/Silica Waveguides by Wakayama, Younosuke, Kita, Tomohiro, Yamada, Hirohito

“…We studied the feasibility of an integrated optical circuit consisting of Si-wire waveguides and silica-based waveguides. In order to realize such a hybrid…”
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Equivalent Refractive Index of Multilayer-Type Photonic Crystals by Ohtera, Yasuo

“…Method of calculating the equivalent refractive index of multilayer-type photonic crystals is proposed. The equivalent index here refers to the Herpin's index…”
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Cylindrical Resonator Utilizing a Curved Resonant Grating as a Cavity Wall by Ohtera, Yasuo, Iijima, Shohei, Yamada, Hirohito

“…A thin-film grating on a curved substrate functions as a highly reflective and wavelength sensitive mirror for a diverging wave that has the same curvature as…”
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Nonlinear-Optic Silicon-Nanowire Waveguides by Yamada, Hirohito, Shirane, Masayuki, Chu, Tao, Yokoyama, Hiroyuki, Ishida, Satomi, Arakawa, Yasuhiko

“…Using a 4-mm-long compact silicon-nanowire waveguide, we demonstrated nonlinear-optic effects such as the spectral broadening of optical short pulses due to…”
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Construction of database for three-dimensional human tooth models and its ability for education and research - Carious tooth models by NAGASAWA, Sakae, YOSHIDA, Takamitsu, TAMURA, Kaoru, YAMAZOE, Masatoshi, HAYANO, Keigo, ARAI, Yoshinori, YAMADA, Hirohito, KASAHARA, Etsuo, ITO, Michio

“…To construct a human teeth database which is freely available to researchers and students, three-dimensional human tooth models were generated in a previous…”
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Characteristics of Resonantly-Guided Modes in Microstructured Optical Fibers by Ohtera, Yasuo, Hirose, Haruka, Yamada, Hirohito

“…Modal characteristics of resonantly-guided modes (RGMs) in microstructured fibers were investigated through numerical simulation. The modes of interest are…”
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Optical Crossing and Integration Using Hybrid Si-Wire/Silica Waveguides by Wakayama, Younosuke, Kita, Tomohiro, Yamada, Hirohito

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Analysis of Phase Matching Conditions for Generating Second Harmonic in ZnO Channel Waveguides by Taira, Yuta, Kita, Tomohiro, Teraoka, Edgar Yoshio Morales, Yamada, Hirohito

“…We describe a phase-matching scheme for generating the second harmonic in ZnO channel waveguides using a modal phase-matching (MPM) method. We found that MPM…”
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