Patent application number | Description | Published |
20080226215 | OPTICAL WAVEGUIDE DEVICES - The present invention provides an optical waveguide device having a configuration such that the optical waveguide is folded back on an end area of the optical waveguide substrate to widen the modulation band. The optical waveguide device includes a substrate body made of an electro-optical material, optical waveguide, and modulation electrodes for applying a voltage on the optical waveguide. The optical waveguide includes first primary areas, a first curved area, first folding-back areas provided between the first curved area and a folding-back point, second primary areas, a second curved area, and second folding-back areas provided between the second curved area and the folding-back point. At least a part of the signal electrode is provided in a folding-back region extending from the first curved area and the second curved area to the folding-back point. | 09-18-2008 |
20090232439 | OPTICAL MODULATORS - An optical modulator having an optical modulation part and a connection part for an optical fiber propagating light. The optical modulation part has a modulation substrate of an electro-optic material, a modulation optical waveguide formed on the modulation substrate, a high frequency interaction part for applying a voltage to the modulation optical waveguide to modulate the propagation of light, a first supporting substrate and a first adhesion layer for adhering the modulation substrate to the first supporting substrate. The connection part has a connection substrate of an electro-optic material, a connection optical waveguide formed on the connection substrate, a second supporting substrate, and a second adhesion layer for adhering the connection substrate to the second supporting substrate. The modulation substrate is adhered to the connection substrate. The first supporting substrate is adhered to the second supporting substrate. The modulation optical waveguide is connected to the connection optical waveguide. | 09-17-2009 |
20090245715 | OPTICAL MODULATORS - An optical modulator | 10-01-2009 |
20090274408 | OPTICAL MODULATOR COMPONENT AND OPTICAL MODULATOR - An optical modulator component | 11-05-2009 |
20090290830 | OPTICAL PHASE MODULATOR - The invention provides an optical phase modulator having a substrate made of an electro-optical material, a signal electrode provided on the substrate and first and second ground electrodes provided on both sides of the signal electrode. The electrodes are provided so that a size of the first gap between the first ground electrode and the signal electrode is smaller than a size of a second gap between the second ground electrode and the signal electrode. Furthermore, an optical waveguide is provided in the first gap as an optical phase modulator and not provided in the second gap. A driving voltage required for the phase adjustments is thereby lowered, the impedance matching is easily made and excellent radio frequency property can be realized. | 11-26-2009 |
20100201562 | RADIO OSCILLATING AND RADAR SYSTEMS - It is provided a radio oscillating system for oscillating a radio signal. The system has an optical modulator for oscillation, a modulating means for inputting a modulating signal of a frequency of fm into the optical modulator to modulate a carrier wave so as to interpose sideband waves onto the carrier wave at positions shifted with respect to the frequency of the carrier wave by the frequency “fm”; and an optical receiver for oscillation for receiving beam from the optical modulator and converting the beam into an electrical signal. The system further has a radiating means for radiating radio signal of a frequency of 2 fm based on the electrical signal. An input voltage Vp−p applied on the optical modulator is 1.0 times or more and 1.99 times or less of a half-wavelength voltage Vπ of the optical modulator. | 08-12-2010 |
20100269567 | METHOD AND DEVICES OF DETECTING ACCUMULATION AMOUNT OF PARTICULATES - It is used a filter trapping particulates from a gas containing the particulates, a container | 10-28-2010 |
20110032599 | ELECTROMAGNETIC WAVE OSCILLATING DEVICES - It is provided a device of oscillating an electromagnetic wave having a frequency of 0.1 THz to 3 THz from pump and idler waves | 02-10-2011 |
20110032600 | ELECTROMAGNETIC WAVE OSCILLATING DEVICES - An oscillating device includes an oscillating substrate | 02-10-2011 |
20110032601 | ELECTROMAGNETIC WAVE OSCILLATING DEVICES - It is provided a device of oscillating an electromagnetic wave having a frequency of 0.1 THz to 3 THz from pump and idler waves by parametric effect. The device includes a supporting body | 02-10-2011 |
20110271740 | METHOD OF DETECTING PARTICULATES - A ceramic honeycomb filter including trapping holes forming lattices is used to detect particulates trapped in the filter. An electromagnetic wave is transmitted to the filter in a plane perpendicular to the longitudinal direction of the trapping hole. The electromagnetic wave after the electromagnetic wave passes through the filter is received and the particulates trapped in the filter are detected on the base of a received intensity of the electromagnetic wave. The electromagnetic wave has a frequency of 0.294 c/a or more and c/a or less (a represents a lattice spacing of said trapping holes and c represents the speed of light). The electromagnetic wave is irradiated to the filter wherein the particulates are not trapped and an inclined angle θ of the electromagnetic wave with respect to the lattices is changed so as to increase a received intensity of the electromagnetic wave. | 11-10-2011 |
20130156053 | Electromagnetic Wave Oscillating Devices and a Method of Producing the Same - It is provided a device oscillating an electromagnetic wave having a target frequency of 0.1 THz to 30 THz. The device includes a main body made of a non-linear optical crystal and a sub-wavelength grating structure formed on the main body. The sub-wavelength grating structure includes protrusions arranged in first direction “X” and second direction “Y” on the main body, first grooves | 06-20-2013 |
20130156062 | Semiconductor Wavelength Converting Devices and Light Sources for Generating Infrared Rays - It is provided a wavelength converting device oscillating an idler light having a wavelength of 5 to 10 μm from a pump light. The wavelength of the idler light is longer than that of the pump light. The wavelength converting device includes a wavelength converting layer | 06-20-2013 |
20130241351 | Thin Plate Vibration Device and a Method of Producing the Same - A thin plate type vibration device | 09-19-2013 |
20140002891 | Electromagnetic Wave Radiation Element and Method for Producing Same | 01-02-2014 |
20140286607 | Structures of Connecting Optical Waveguide Parts and Holding Parts of Holding Optical Input Members, and a Method of Producing the Same - A connecting structure includes an optical waveguide part, a holding part of holding an optical input member, and an adhering part adhering the optical waveguide part and holding part. The optical waveguide part includes an optical waveguide substrate including an optical waveguide. At least one of the holding part and optical waveguide part includes a recess and an adhesive face adjacent to the recess. The adhering part is provided on the adhesive face and in a single region distant from the optical waveguide substrate in a direction of thickness of the optical waveguide substrate. The recess is provided between the adhering part and optical waveguide substrate. A space is provided between an end face of the optical input member and an end face of the optical waveguide. | 09-25-2014 |