National Institute of Information and Communications Technology, Incorporated

Asahi Glass Company, Limited

Agc Inc.

Optoquest Co., Ltd.

Hokkaido University

Agc Glass Europe

Daiichi Pharmaceutical Co., Ltd.

Amonics Limited

National Institute of Information and Communications Technology, Incorporated Administrative Agency

Naoya Wada

Nobuhiro Nakamura

Ken-ichi Kitayama

Hideyuki Sotobayashi

Yusuke Arai

Hiroyuki Hijiya

Nao Ishibashi

Ben Puttnam

Yoshinari Awaji

Seitetsu Boku

Seiki Ohara

Yuki Kondo

Masamichi Tanida

Shotaro Takenobu

Yasuko Osaki

Yumiko Aoki

Hiroaki Harai

Wataru Chujo

Luis Ruben Soares

Takuya Yoda

Mendinueta Jose Manuel Delgado

Fumito Kubota

Yusaku Tottori

Tetsuya Kobayashi

Tetsuya Nakashima

Daniel Decroupet

Hirofumi Doi

Syuji Matsumoto

Masao Ozeki

Fumi Moritsuka

Hitoshi Mishiro

Minoru Tamada

Philippe Roquiny

Peter Chan

Satoshi Shinada

Benoit Domercq

Kenta Kobayashi

Yohei Kawai

Atsushi Okamoto

Kashiko Kodate

Yuki Komai

Hideaki Furukawa

Eddie Kong

Hiroyuki Yamazaki

Tomokazu Oda

Taketoshi Takahata

Gabriella Cincotti

Shusaku Noda

Xu Wang

Ruben Soares Luis

Kenichi Kitayama

Georg Friedrich Rademacher

Shinya Hosogi

Takehiko Nose

Ray Man

The present invention provides a polymer optical waveguide having a core, an under cladding and an over cladding, in which: the polymer optical waveguide has a first section on one end side in the light propagation direction where no portion of the over cladding exists and the core and the under cladding are exposed, and a second section on the other end side in the light propagation direction where the core is covered with the under cladding and the over cladding; and a relative refractive index difference among the core, the under cladding and the over cladding, a core width and core height in an end surface at the one end side of the first section, and a core width and core height in an end surface at the other end side of the second section satisfy predetermined relationships.

Polymer optical waveguide and composite optical waveguide

The present invention relates to a glass plate which is provided with a first main surface, and a second main surface which faces the first main surface. An antiglare portion and a non-antiglare portion are provided to the first main surface. The average lengths (RSm) of elements of roughness curves of the antiglare portion and the non-antiglare portion are respectively 1 &#x3bc;m or higher. The difference between the RSm of the antiglare portion and the RSm of the non-antiglare portion is 100 &#x3bc;m or lower.

Glass plate

The present invention relates to a protective member having a plate shape, including: a first base material that is a chemically strengthened glass, and a second base material provided in a hole recessed or penetrating in a thickness direction of the first base material and formed of a material different from a material forming the first base material, in which with respect to values of relative permittivity and dielectric loss tangent at a frequency of 10 GHz of the first base material and the second base material, the value of at least either one of the relative permittivity and the dielectric loss tangent of the second base material is smaller than the value of the relative permittivity or the dielectric loss tangent of the first base material.

Protective member and communication terminal device including the same

The present invention relates to a polymer optical waveguide including: a core; an under-cladding; and an over-cladding, in which the polymer optical waveguide includes a coupling section and an optical waveguide section that are provided along a light propagation direction, the polymer optical waveguide includes portions having different core widths along the light propagation direction, and when a core width at a portion a having a narrowest core width is denoted Wa (&#x3bc;m) and a core height at the portion a is denoted Ha (&#x3bc;m), Ha is 1.3 &#x3bc;m or more and 4.5 &#x3bc;m or less, and Ha/Wa is 1.15 or less.

It is therefore an object of the disclosure of this document to attain a data transmission system with a simple transmitter implementing polarization multiplexing using either DML or EAM and a receiver with only one PD. A data transmission systemwhich comprises a transmitterand a receiver, wherein the transmittercomprises a first signal processorand an optical signal generator, the optical signal generatoroutputs an optical signal which comprises X and Y polarization components, e(t) and e(t), and wherein the first signal processorreceives a first data stream, S, and a second data stream, S, and controls the X and Y polarization components to reflect the first and the second data streams, respectively, wherein the receivercomprises only one photodetectorand a second signal processor

Polarization division multiplexing intensity modulation system and method using the system

A glass plate, with a thickness &#x3b8; of 1.0 mm or more, having first and second main surfaces and end surfaces, includes 1 to 80 weight ppm of iron in terms of FeOwith 0.1 to 10.0 weight ppm of Fe; and 0.1 to 10.0 weight ppm of Ni, Mn, Cr, Co and V in total. In a sample with a size of 50 mm&#xd7;50 mm&#xd7;&#x3b8; obtained from the glass plate, and an arithmetic average roughness of the main surfaces and first and second cut surfaces being 0.1 &#x3bc;m or less, a first average absorbance coefficient for a wavelength of 400 to 700 nm measured on the first main surface in a normal direction is 0.009 or less, and a ratio of a second average absorbance coefficient measured on the first cut surface, to the first absorbance coefficient is 1.3 or less.

An optical communication system is arranged to bring out potential capabilities of mode-division multiplexing (MDM). The optical communication system includes a hologram medium in which holograms are multiplex-recorded so as to correspond to respective spatial modes of signal light transmitted by a multi-mode fiber (MMF). A phase plate modulates phases of the respective spatial modes so as to reduce a spatial overlap between the spatial modes, and is provided on a side of the hologram medium on which signal light enters the hologram medium.

Optical communication system and optical communication method

A SDH receiver which comprises a first polarization beam splitter, a second polarization beam splitter, a first separator, a second separator, a third separator, a fourth separator, a first 90-degree polarization rotor, a second 90-degree polarization rotor, a first hybrid detector, a second hybrid detector, a third hybrid detector, a fourth hybrid detector, and a signal processor

Polarization insensitive self-homodyne detection receiver for spatial-division multiplexing systems

To provide a highly transmissive glass and a light guide that allow high internal transmittance of plate glass to be maintained and the internal transmittance spectrum of the plate to be flattened without lowering the redox of iron to a value equal to or more than a certain value. This glass article comprises a glass which includes 1 to 80 mass ppm of total iron oxide (t-FeO) in terms of FeO, has a redox of iron of 0 to 50% and includes 0.01 to 4.0 mass ppm of NiO. The glass article and the light guide comprising the glass article are characterized in that an A value of the internal transmittance spectrum flatness is 0.83 or more.

Glass article and light guide

The receiverfor self-homodyne detection comprises a coherent detection system and a direct detection system. The receiver comprises a polarization splitter, a first splitter, a 90 degree polarization rotor, a hybrid detector, a first balanced detector, and a processor

Polarization insensitive self-homodyne detection receiver

A translucent conductive substrate () for Organic Light Emitting Device comprising, a transparent support (), a scattering layer () formed over the transparent support () and comprising a glass which contains a base material () having a first refractive index for at least one wavelength of light to be transmitted and a plurality of scattering materials () dispersed in the base material () and having a second refractive index different from that of the base material and a transparent electrode () formed over the scattering layer (), said electrode () comprising at least one metal conduction layer () and at least one coating () having properties for improving the light transmission through said electrode, said coating () comprises at least one layer for improving light transmission () and is located between the metal conduction layer () and the scattering layer (), on which said electrode () is deposited.

Translucent conductive substrate for organic light emitting devices

A laminated substrate for an organic LED element includes a translucent substrate, a scattering layer including glass and a solid scattering material provided on the translucent substrate and having a thickness of 30 &#x3bc;m or less, and an electrode provided on the scattering layer, and no covering layer including glass is provided between the scattering layer and the electrode.

Laminated substrate for organic LED element, and organic LED element

A cartridge-type optical functional module achieves excellent optical coupling and may include an optical fiber-type module and/or a waveguide-type module. A cartridge-type optical functional module is provided that includes first and second optical fiber collimators, an optical functional object that has an optical fiber-type module or a waveguide-type module, and a base section. The optical functional object also includes a third collimator, and a first alignment mechanism for aligning the position of the third collimator in the optical functional object.

Optical fiber-based optical functional device cartridge module

It is an object of the present invention to provide a rare earth doped fiber whose transient response is suppressed and an optical amplifier for optical packet communication having a good characteristic even if there is little traffic. The above-mentioned problem is solved by an optical amplifier for optical packet communication comprising a first rare earth doped fiber (EDFA) having an active region whose diameter is between 3.4 &#x3bc;m and 10 &#x3bc;m, inclusive, an intermediate gain equalizing filter, and a second EDF, wherein the first EDFA is shorter than the second EDFA, and wherein the intermediate gain equalizing filter adjusts the intensity of each wavelength channel so as to equalize the light intensity of each wavelength channel having transmitted through the second EDF.

Burst mode rare earth-doped fiber amplifier

Growing community of inventors

Koganei, Japan

Naoya Wada