Search Results - "Kawakami, Shojiro"

Multi-level signaling in the Stokes space and its application to large-capacity optical communications by Kikuchi, Kazuro, Kawakami, Shojiro

“…The Stokes vector of an optical signal does not depend on its absolute phase; therefore, we can construct the phase-insensitive optical communication system,…”
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Self-collimating phenomena in photonic crystals by Kosaka, Hideo, Kawashima, Takayuki, Tomita, Akihisa, Notomi, Masaya, Tamamura, Toshiaki, Sato, Takashi, Kawakami, Shojiro

“…We found that self-determining collimated light is generated in a photonic crystal fabricated on silicon. The divergence of the collimated beam is insensitive…”
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Differential interference contrast microscope using photonic crystals for phase imaging and three-dimensional shape reconstruction by Fabre, Laurent, Inoue, Yoshihiko, Aoki, Takafumi, Kawakami, Shojiro

“…We present a differential interference contrast microscope using photonic crystals capable of real-time capture of both phase and amplitude components…”
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Photonic crystals for micro lightwave circuits using wavelength-dependent angular beam steering by Kosaka, Hideo, Kawashima, Takayuki, Tomita, Akihisa, Notomi, Masaya, Tamamura, Toshiaki, Sato, Takashi, Kawakami, Shojiro

“…Light-beam steering that is extremely wavelength dependent has been demonstrated by using photonic crystals fabricated on Si. The scanning span reached 50°…”
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Mechanism of shape formation of three-dimensional periodic nanostructures by bias sputtering by Kawakami, Shojiro, Kawashima, Takayuki, Sato, Takashi

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Multichannel Photonic Crystal Wavelength Filter Array for Near-Infrared Wavelengths by Ohtera, Y., Onuki, T., Inoue, Y., Kawakami, S.

“…Multichannel wavelength filters consisting of 2-D photonic crystal (PhC) for the near-infrared wavelength region (~800 nm) are demonstrated. The filter is a…”
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Simultaneous imaging of multiple cellular events using high-accuracy fluorescence polarization microscopy by Kim, Sang-Yeob, Arai, Yoshiyuki, Tani, Tomomi, Takatsuka, Hirofumi, Saito, Yoshiharu, Kawashima, Takayuki, Kawakami, Shojiro, Miyawaki, Atsushi, Nagai, Takeharu

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Self-healing effects in the fabrication process of photonic crystals by Kawashima, Takayuki, Miura, Kenta, Sato, Takashi, Kawakami, Shojiro

“…We demonstrate a self-healing effect of unwanted defects in the autocloning process: autocloning is a previously proposed technique to fabricate…”
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Photonic-crystal spot-size converter by Kosaka, Hideo, Kawashima, Takayuki, Tomita, Akihisa, Sato, Takashi, Kawakami, Shojiro

“…We have demonstrated a spot-size converter (SSC) that is made of photonic crystals (PCs) and has a conversion ratio of 10:1 for a 1-μm-wavelength light beam…”
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Imaginary-shifted expression of Gaussian beams as rigorous solutions of Maxwell equations by Hatakoshi, Gen-ichi, Kawakami, Shojiro

“…Analytical and rigorous solutions of Maxwell equations for Gaussian beams have been derived, without using paraxial approximation. Vectorial formulation of…”
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Design and Fabrication of Multichannel Photonic Crystal Wavelength Filters to Suppress Crosstalk of Arrayed Waveguide Grating by Ohkubo, Hiroyuki, Ohtera, Yasuo, Kawakami, Shojiro, Chiba, Takafumi

“…Multichannel photonic crystal (PC) wavelength filters have three-dimensional (3D) PCs consisting of Ta 2 O 5 /SiO 2 multilayer thin films fabricated by the…”
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Propagation of light beams along line defects formed in a-Si/SiO2 three-dimensional photonic crystals: Fabrication and observation by Hanaizumi, Osamu, Ohtera, Yasuo, Sato, Takashi, Kawakami, Shojiro

“…We have fabricated optical waveguides in three-dimensional (3D) photonic crystals and observed propagation of light beams. Light beams with wavelengths of 1.15…”
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INTEGRATION AND EVALUATION OF MULTICHANNEL PHOTONIC CRYSTAL WAVELENGTH FILTERS CONSISTING OF AUTOCLONED Ta2O5/SiO2 MULTILAYER THIN FILMS by Ohkubo, H, Ohtera, Y, Kawakami, S, Chiba, T, Okano, H

“…Authors report on the fabrication of multichannel photonic crystal (PC) wavelength filters and their evaluation at wavelength division multiplexing (WDM)…”
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Coupled Waveguide Devices Based on Autocloned Photonic Crystals by Shirane, Masayuki, Gomyo, Akiko, Miura, Kenta, Ohtera, Yasuo, Yamada, Hirohito, Kawakami, Shojiro

“…We proposed and demonstrated the operation of coupled waveguide devices based on photonic crystal (PC) structures fabricated by autocloning technology…”
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Lattice constant changes and electro-optic effects in proton-exchanged LiNbO3 optical waveguides by Minakata, Makoto, Kumagai, Kouichi, Kawakami, Shojiro

“…Lattice constants and electro-optic constants have been measured on proton-exchanged LiNbO3 single crystals by means of the x-ray rocking curve method and the…”
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Loss reduction of photonic crystal waveguide fabricated by the autocloning technology by Miura, Kenta, Ohtera, Yasuo, Ohkubo, Hiroyuki, Sato, Takashi, Akutsu, Naoto, Hikage, Masahiro, Ishino, Naoto, Kawashima, Takayuki, Kawakami, Shojiro

“…The heterostructured photonic crystal waveguide fabricated by the autocloning technology allows fabrication jointly with other functional devices. Hence, this…”
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Simultaneous imaging of multiple cellular events using high-accuracy fluorescence polarization microscopy by Kim, Sang-Yeob, Arai, Yoshiyuki, Tani, Tomomi, Takatsuka, Hirofumi, Saito, Yoshiharu, Kawashima, Takayuki, Kawakami, Shojiro, Miyawaki, Atsushi, Nagai, Takeharu

“…Förster resonance energy transfer (FRET) has been widely used to design indicators for biomolecules. Conventional FRET-based indicators enable quantitative…”
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Fabrication of germanium-coated nickel hollow waveguides for infrared transmission by MIYAGI, M, HONGO, A, AIZAWA, Y, KAWAKAMI, S

“…Circular hollow nickel waveguides with an inner germanium layer are fabricated by using a method based on rf sputtering, plating, and etching techniques…”
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Superprism phenomena in photonic crystals: toward microscale lightwave circuits by Kosaka, H., Kawashima, T., Tomita, A., Notomi, M., Tamamura, T., Sato, T., Kawakami, S.

“…The superprism phenomenon, the dispersion of light 500 times stronger than the dispersion in conventional prisms, was demonstrated at optical wavelengths in…”
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High-Order Gaussian Beams and Optical Vortices as Rigorous Solutions of Maxwell Equations by Hatakoshi, Gen-Ichi, Kawakami, Shojiro

“…Analytical and rigorous solutions of Maxwell equations for high-order Gaussian beams have been derived, without using paraxial approximation. Vectorial…”
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