Nippon Telegraph and Telephone Corporation

Ntt Electronics Corporation

Koichi Hadama

Yuzo Ishii

Kenya Suzuki

Kazunori Seno

Yuichi Higuchi

Etsu Hashimoto

Toshiki Nishizawa

Yuji Mitsuhashi

Joji Yamaguchi

Takeshi Kawai

Hiroshi Tomita

Tetsuo Takahashi

Toshio Watanabe

Toru Miura

Nobuaki Matsuura

Keita Yamaguchi

Mitsumasa Nakajima

Yuichiro Ikuma

Naoki Ooba

Mitsunori Fukutoku

Toshiki Wada

Mitsuo Usui

Naru Nemoto

Toshihiko Kondo

Tohru Matsuura

Yoshito Jin

Jo Ji Yamaguchi

Inside a housing of electronic equipment, a first actuator for generating vibration along a first axis is mounted. The first actuator is mounted in a direction in which the first axis is non-parallel and non-perpendicular to at least one of the six surfaces.

Electronic apparatus that generates illusion of diagonal traction

An end face observation device () of this invention includes a first lens () including a missing portion () extending through in an optical axis direction, a light source () configured to generate light that irradiates an end face (A) of an observation target via the first lens, and an image capturing element () configured to receive an image of the end face of the observation target via the first lens. This can implement an end face observation device that integrates a structure configured to operate the end face of the observation target with an observation device configured to observe the end face by inserting the structure configured to operate the end face of the observation target into the missing portion of the first lens.

End face observation device

The invention provides a low-cost and easy-to-align optical signal processing device on which a plurality of WSS function units can be integrated using only a single lens. Optical signals input to the first input/output port group (-) are output into a space as collimated light via the microlens array (). The signal light propagating through the space will be wavelength-demultiplexed by the diffraction grating (), focused by the lens (), and focused at the upper part in the drawing, with respect to the y-axis direction of the spatial light modulator (). The light provided with a desired phase modulation and reflected by the spatial light modulator () is deflected at a desired angle in the y-z plane according to its phase setting, and further optically coupled to an arbitrary port by passing through the lens () again, thus the switching operation is completed.

Optical signal processing device

To provide an optical signal processing device that can collect light from an input waveguide to form a beam array having a small diameter. The optical signal processing device includes input waveguidesto, an array waveguideand a slab waveguidethat is connected to a first archaving the single point C as a center and input waveguidestoand that is connected to a second archaving the single point C as a center and an array waveguide

Optical signal processing device with an array waveguide coupled to a slab waveguide with two arcs

A wavelength selection switch can decrease the amount of increase in size and cost of a node device by integrating and sharing the constituent components of a plurality of wavelength selection switches or optical components mounted in a node. The wavelength selection switch has: at least one input port that inputs light; at least one output port that receives light from the input port; at least one light-collecting element that alters the beam shape of the light entering from the input port; at least one scattering element that scatters the light entering from the input port into each wavelength; at least one wavefront control element that causes light of each wavelength scattered by the scattering element to be reflected to the output port for each wavelength.

An optical input/output device includes a phase modulator element and an optical element. The phase modulator element includes a plurality of pixels arranged in a matrix and is configured to change an optical phase of signal light by applying a driving signal corresponding to a phase pattern. The optical element is configured to convert a direction of exit of the signal light so as to irradiate each pixel with the signal light from the input port. A pattern generator unit includes superimposing means for superimposing a periodic phase pattern having a predetermined period in at least one direction in a plane of the phase modulator element, and means for controlling an amplitude of the periodic phase pattern. The signal light is diffracted to a position according to the period of the superimposed periodic phase pattern, so that light intensity of the signal light is dispersed.

Optical input/output device

An optical switch includes an input port, output ports, and a spatial light modulating section that receives an optical signal from the input port to deflect the optical signal to a selected one of the output ports. A phase distribution with the same radius of curvature as that of a wavefront of the optical signal and a phase distribution that allows the deflected optical signal to be coupled to the output port are set for the spatial light modulating section.

Optical switch

One side surface of a diffraction grating is securely held by a holder, and further, the holder is securely supported on a substrate by a supporter in such a manner that the diffraction grating held by the holder is not brought into contact with the substrate. In this manner, the diffraction grating is fixed only onto one side surface to the supporter via the holder, and further, the diffraction grating is not brought into contact with the substrate. Therefore, the lower portion of the supporter is displaced by heat generated in the substrate, however, the displacement of the supporter cannot adversely influence directly on the diffraction grating since the holder is interposed between the displaced portion and the diffraction grating.

Light multiplexer

A light-shielding portion () shields the light spot of output light output toward a shunt position &#x3b1; by a projecting portion (). Hence, the output light output toward the shunt position &#x3b1; does not travel to an output port (). This allows to prevent crosstalk.

Growing community of inventors

Atsugi, Japan

Koichi Hadama