Fujitsu Corporation

The University of Tokyo

Canon Kabushiki Kaisha

Sony Corporation

Nippon Telegraph and Telephone Corporation

Sony Electronics Inc

Other

Sumitomo Electric Device Innovations, Inc.

Ntt Communications Corporation

Fujitsu Limied

Tsuyoshi Yamamoto

Tamotsu Akashi

Hirofumi Aota

Kohei Shibata

Kazumasa Takabayashi

Nobuaki Hatori

Yasuhiko Arakawa

Shinji Yamashita

Manabu Matsuda

Takashi Shimizu

Hisao Sudo

Jun Matsui

Mitsuru Ekawa

Shinichi Takeuchi

Hirohiko Kobayashi

Suguru Akiyama

Kan Takada

Satoshi Kuroyanagi

Tetsuya Nishi

Takuji Maeda

Takuya Fujii

Hideki Honda

Hideo Natori

Hiroshi Kai

Masakazu Nomoto

Johji Yamaguchi

Shinji Taniguchi

Hiroyuki Furukawa

Hiroki Ooi

Nobuhiro Fukushima

Katsuhiro Suzuki

Yoshinobu Kubota

Satoshi Ide

Naoki Hashimoto

Tomohiro Tsuji

Hajime Shoji

Toshiya Kishida

Allison Marlene Chaney

Julia Anne Framel

Tokuharu Kimura

Kazuma Igari

Yuji Uenishi

Fumitaka Ozaki

Harumi Yagi

Takakiyo Nakagami

Osamu Tsuboi

Hiroyuki Fujita

Takafumi Terahara

Kentaro Nakamura

Hiroshi Yamada

Wataru Sotoyama

Hitoshi Takahashi

Yukito Tsunoda

Goji Nakagawa

Akira Miura

Yasuhiro Yoneda

Kazuyuki Mori

Shinsuke Tanaka

Takatoshi Yagisawa

Yuji Tochio

Eiji Yoshida

Haruhiko Tabuchi

Tetsuzo Yoshimura

Shigenori Aoki

Koji Tsukamoto

Takayuki Watanabe

Kazuhiro Tanaka

Takeshi Ishitsuka

Koji Terada

Katsusada Motoyoshi

Haruhisa Soda

Naoaki Nakamura

Kenichi Kawaguchi

Koji Otsubo

Tsutomu Ishikawa

Masaaki Kawai

Tatsuya Takeuchi

Satoshi Tatsuura

Shigekazu Okumura

Shuichi Tomabechi

Shingo Uchiyama

Ayahito Uetake

Mitsuo Suehiro

Yasuhide Kuroda

Chihiro Ohshima

Keisuke Tanaka

Naru Nemoto

Noritsugu Ozaki

Rie Takada

Kenichiro Tsubone

Toshiyuki Nakada

Takeshi Komiyama

Yoshihito Okuwaki

Hiroyasu Itoh

Yousuke Yamazaki

Masanobu Shigenari

Sachiko Matsui

Ekuo Sato

Makoto Ozawa

Kimi Mizuno

To provide an information processing device for enabling a plurality of users to efficiently use content on the same screen. Provided is an information processing device including: a manipulation detection unit configured to detect a manipulation by a user; and a control unit configured to control display on a screen according to the detection of the manipulation detection unit. The control unit performs control to cause a first menu for selecting a content save source to be displayed along each side of the screen when the manipulation detection unit detects a first manipulation from each side toward a center of the screen with respect to at least two sides among sides of the screen, cause a second menu for selecting content to be displayed outside the first menu when the manipulation detection unit detects a second manipulation on the first menu, and cause content selected by a third manipulation to be displayed on the screen when the manipulation detection unit detects the third manipulation on the second menu.

Information processing device, information processing method, and computer program for side menus

A module includes a substrate, a transmission member and a reflection member, wherein on the substrate, surface emitting elements which emit light having different wavelengths are arranged side by side in a predetermined direction, the transmission member has a first surface which is parallel to the substrate and a second surface which is opposite to the first surface, the reflection member has a third surface which is parallel to the second surface of the transmission member, the second surface of the transmission member is inclined in the predetermined direction relative to the first surface and faces the third surface of the reflection member with an air layer in between, on the second surface of the transmission member, optical filters are arranged linearly side by side and the plurality of optical filters.

Wavelength multiplexing optical module, wavelength demultiplexing optical module, and optical module

Provided is an information processing device for enabling a plurality of content to be efficiently used on the same screen, the information processing device including: a manipulation detection unit configured to detect a manipulation by a user; and a control unit configured to control display on a screen according to the detection of the manipulation detection unit. The control unit performs control to cause, when the manipulation detection unit detects a manipulation for bringing at least two pieces of content displayed on the screen into contact with each other under control by the control unit, the at least two pieces of content to be displayed in alignment.

Information processing device, information processing method, and computer program

A apparatus includes a tunable laser configured to include a tunable filter and a mirror; a first optical splitter provided between the tunable filter and the mirror, the first optical splitter including a first port and a second port on a tunable filter side and a third port and a fourth port on a mirror side, in which the tunable filter is coupled to the first port and the mirror is coupled to the third port, respectively; a first optical waveguide coupled to the second port; a second optical waveguide coupled to the fourth port; and an optical coupler with which the first optical waveguide and the second optical waveguide are combined.

Tunable laser device

The present invention relates to an optical semiconductor integrated element and manufacturing method for same solves difficulty in element manufacture, and reduces optical transmission loss. The present invention is provided with a stripe-shaped waveguide configured from a multilayer structure wherein at least a first conductivity-type lower cladding layer, a waveguide core layer, and an upper cladding layer are layered, and the upper cladding layer is formed using a second conductivity-type upper cladding layer, and an i-type upper cladding layer, which has a bent portion by being shifted in the perpendicular direction with respect to the main extending direction of the waveguide.

Integrated semiconductor optical element and manufacturing method for same

A laser includes first through fourth gain media, first through fifth wavelength selective filters, and first through fourth wavelength selective mirrors. The first through fourth gain media emit laser beams of different wavelengths. Each of the first through fifth wavelength selective filters includes first through fourth input/output ports. The fifth wavelength selective filter selects light of periodic wavelengths. The first through fourth wavelength selective filters have their respective first input/output ports connected to the first through fourth gain media, respectively, have their respective fourth input/output ports connected to the first through fourth wavelength selective mirrors, respectively, and have their respective second input/output ports connected to the first through fourth input/output ports, respectively, of the fifth wavelength selective filter.

Laser and method of controlling laser

A semiconductor laser light source includes a semiconductor substrate formed of a first conductivity type semiconductor material, a lower cladding layer formed of the first conductivity type semiconductor material on the semiconductor substrate, a waveguide layer on the lower cladding layer, and an upper cladding layer formed of a second conductivity type semiconductor material on the waveguide layer. The waveguide layer includes a core area and rib areas thinner than the core area on either side of the core area. The core area has a quantum dot active layer, and the rib areas have no quantum dot layer. The waveguide layer forms a laser part having the core area with a constant width and a spot size converter having the core area with a taper width from a side adjacent to the laser part toward an end of the spot size converter.

Semiconductor laser light source and fabrication method

An optical receiving device includes: a lens portion configured to refract incident light with a first wavelength and refract incident light with a second wavelength; a first beam splitter configured to let refracted light with the first wavelength transmit and reflect refracted light with the second wavelength; a second beam splitter configured to reflect transmitted light with the first wavelength; and a light receiver configured to receive reflected light with the first wavelength and reflected light with the second wavelength, wherein the first beam splitter and the second beam splitter are disposed so as to be separated by a difference in optical path length between the light with the first wavelength and the light with the second wavelength.

Optical receiving device including first lens and second lens and optical receiving system including first lens and second lens

An optical transmission system includes: a first light source configured to output a light wave of a first wavelength among a plurality of wavelengths; a second light source configured to output a light wave of a second wavelength; and a first detection section configured to detect abnormality in the light wave from the first light source, wherein upon detection of abnormality, a multiplexed optical signal including an optical signal of a modulated light wave generated using the light wave from the second light source in place of an optical signal of a modulated light wave generated using the light wave from the first light source is transmitted.

Optical transmission system, transmitter, receiver, and optical transmission method

A laser apparatus includes first and second gain media; first, second, and third wavelength selection filters; and first and second mirrors. The wavelengths of first and second laser light emitted from end surfaces of the first and second gain media, respectively, are different from each other. The third wavelength selection filter is a wavelength selection filter to select light having wavelengths that cyclically exist in the light, as light to be selected. The other end surfaces of the first and second gain media are connected with the first input/output ports of the first and second wavelength selection filters, respectively. The fourth input/output ports of the first and second gain media are connected with the first and second mirrors, respectively. The first and second input/output ports of the third wavelength selection filter are connected with the second input/output ports of the first and second wavelength selection filters, respectively.

Laser apparatus

A tunable laser source includes a mirror, a tunable filter, and a semiconductor optical amplifier integrated device including first, second, and third semiconductor optical amplifiers between a first end face facing toward the tunable filter and a second end face facing away from the first end face. The first amplifier is closer to the first end face than the second and third amplifiers. The semiconductor optical amplifier integrated device further includes a partially reflecting mirror and an optical divider that are disposed between the first amplifier and the second and third amplifiers. The partially reflecting mirror is closer to the first amplifier than the optical divider. The optical divider includes first and second branches connected to the second and third semiconductor optical amplifiers, respectively. The tunable filter and the first amplifier are disposed in an optical path between the partially reflecting mirror and the mirror that form a laser resonator.

Tunable laser source, optical transmitter, and optical transmitter and receiver module

A tunable laser includes: a wavelength filter that includes a first ring resonator and a second ring resonator each of which is formed by a waveguide including a silicon waveguide core, and each of which is capable of shifting each of resonance wavelengths that exit periodically and whose intervals are different from each other; and an integrated device that is optically coupled to the wavelength filter, and in which a first semiconductor optical amplifier and a reflector are provided in sequence from a side of the wavelength filter, wherein the resonance wavelengths of the first ring resonator and the second ring resonator are overlapped with each other at one wavelength, and the resonance wavelengths are overlapped with each other also at a plurality of wavelengths other than the one wavelength.

Tunable laser and tunable laser module

A multi-wavelength laser light source includes a gain waveguide having a gain medium and a first mirror; and a waveguide wavelength filter, wherein the waveguide wavelength filter comprises: a first optical waveguide coupled to an end of the gain waveguide opposite to the first mirror, a plurality of ring resonators having input ports coupled to the first optical waveguide and having resonance wavelengths different from each other, a plurality of output waveguides coupled to respective output ports of the plurality of ring resonators, and second mirrors configured to correspondingly reflect, back to the plurality of ring resonators, at least part of light that has traveled via the output waveguides from the plurality of ring resonators.

Multi-wavelength laser light source and wavelength multiplexing communication system

A quantum dot laser includes a GaAs substrate, a quantum dot active layer which has a barrier layer of GaAs and quantum dots, a GaAs waveguide core layer which is joined to the quantum dot active layer, and a lower cladding layer and an upper cladding layer which sandwich the quantum dot active layer and the GaAs waveguide core layer. The GaAs waveguide core layer extends from a front end of the quantum dot active layer and has a thickness which gradually decreases in a direction to depart from the front end of the quantum dot active layer, a refractive index of a first cladding layer is higher than a refractive index of a second cladding layer. With this structure, expansion of the optical mode diameter that is more than necessary is inhibited to prevent leakage of light, thereby obtaining sufficient optical output.

Optical semiconductor element and method of manufacturing the same

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Kawasaki, Japan

Tsuyoshi Yamamoto