1
Osamu Mitomi, Hiroshi Miyazawa, Kazuto Noguchi: Optical control device. Nippon Telegraph and Telephone Corporation, Spencer & Frank, August 4, 1998: US05790719 (19 worldwide citation)

An optical control device include a substrate having an electrooptic effect, the substrate having ridges with optical waveguides. A buffer layer is formed on the substrate surface, and electrodes are provided. The electrodes includes at least one ground electrode, and a central electrode that is for ...


2
Hiromasa Tanobe, Akira Okada, Kazuto Noguchi, Morito Matsuoka, Takashi Sakamoto, Osamu Moriwaki: Optical communication network system. Nippon Telegraph and Telephone Corporation, Harness Dickey & Pierce, November 20, 2007: US07298974 (17 worldwide citation)

A fiber optic communication system includes a device of switching and setting wavelength of optical signals used in communication by network-node equipments, which sets the mapping of the wavelength of the optical signal used in communication by the network node equipments, and the input/output port ...


3
Kenji Kawano, Toshinori Nozawa, Hiromichi Jumonji, Tsutomu Kitou, Osamu Mitomi, Toshio Suzuki, Mitsuaki Yanagihashi, Kazuto Noguchi: Electrically controlled optical device. Nippon Telegraph and Telephone Company, Spencer Frank & Schneider, July 7, 1992: US05129017 (14 worldwide citation)

An electrically controlled optical device includes a traveling wave electrode structure, a shield conductor and a thick buffer layer having a low dielectric constant. The thickness of an overlaid layer disposed between the traveling wave electrode structure and the shield conductor, as well as the t ...


4
Hiromasa Tanobe, Akira Okada, Morito Matsuoka, Kazuto Noguchi, Takashi Sakamoto, Osamu Moriwaki: Optical communication system. Nippon Telegraph and Telephone Corporation, Harness Dickey & Pierce, April 21, 2009: US07522837 (13 worldwide citation)

An optical communication system is constructed which enables highly reliable and flexible connection to communication nodes connected to a path establishment circuit, by utilizing wavelength-routing characteristics of a path establishment circuit such as an arrayed waveguide grating. The optical com ...


5
Kenji Kawano, Toshinori Nozawa, Hiromichi Jumonji, Tsutomu Kitou, Osamu Mitomi, Toshio Suzuki, Mitsuaki Yanagihashi, Kazuto Noguchi: Electrically controlled optical device. Nippon Telegraph and Telephone Corporation, Spencer Frank & Schneider, June 15, 1993: US05220627 (9 worldwide citation)

An electrically controlled optical device effective index includes a traveling wave electrode, a shield conductor and a thick buffer layer of a low dielectric constant. The thickness of an overlaid layer disposed between the traveling wave electrode and the shield conductor as well as the thickness ...


6
Yasuo Shibata, Yasuhiro Suzuki, Yoshihisa Sakai, Yasumasa Suzaki, Akira Okada, Kazuto Noguchi, Rieko Sato: Light-controlled light modulator. Nippon Telegraph & Telephone Corporation, Fitch Even Tabin & Flannery, June 22, 2004: US06753996 (8 worldwide citation)

A light-controlled light modulator can achieve high-speed, low-loss wavelength conversion. Continuous light with a wavelength &lgr;j is launched into an MMI coupler via a port, and is split into two parts by the MMI coupler, which are led to a loop-type interferometer. In the loop-type interferomete ...


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Kazuto Noguchi, Koichi Kise, Masakazu Iwamura: Method for constructing image database for object recognition, processing apparatus and processing program. Osaka Prefecture University Public Corporation, Birch Stewart Kolasch & Birch, December 25, 2012: US08340451 (4 worldwide citation)

Provided is a method for constructing an image database for object recognition, which includes a feature extraction step of extracting local descriptors from object images which are to be stored in an image database, a scalar quantization step of quantizing a numeric value indicating each dimension ...


9
Osamu Moriwaki, Akira Okada, Kazuto Noguchi, Hiromasa Tanobe, Morito Matsuoka, Takashi Sakamoto: Optical communication network system, wavelength routing apparatus, communication node, optical path managing method for use in optical cross connect apparatus, and apparatus for that method. Nippon Telegraph and Telephone Corporation, Harness Dickey & Pierce, January 8, 2008: US07317875 (3 worldwide citation)

An optical communication network system and a wavelength-routing device and a communication node therefor are provided which can easily increase the optical paths between communication nodes, which are capable of expanding transmission capacity, and which excel in flexibility and expandability. An o ...


10
Akira Okada, Kazutoshi Kato, Kazuto Noguchi, Yoshihisa Sakai, Takashi Sakamoto, Morito Matsuoka, Sen ichi Suzuki: Optical packet routing network system based on optical label switching technique. Nippon Telegraph and Telephone Corporation, Workman Nydegger, September 26, 2006: US07113701 (2 worldwide citation)

An optical communication equipment comprises shared optical sources 88a–88d to be shared by communication nodes 100a–100d, the wavelengths of optical signals 76a–76d are converted into desired wavelengths λa–λd according to the addressed information of the corresponding optical label signals 77a–77d ...