| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 161 | Optical waveguide modulator with output light monitor | US11633777 | 2006-12-04 | US20070076999A1 | 2007-04-05 | Norikazu Miyazaki; Tokutaka Hara |
| An optical waveguide monitor equipped with an output light monitor having a decreased restriction in the dimensions and form thereof, a high reliability and a low production cost includes an optical waveguide element (having a plurality of surface waveguide portions, a connecting portion for converging and connecting the surface waveguide portions and an output light-outputting waveguide portion connected to the connecting portion each formed on a dielectric substrate plate; an output light optical fiber connected to an output end of the output light-outputting waveguide portion, a reinforcing capillary for reinforcing a connection between the optical waveguide element and the output light optical fiber and a monitoring light receiving means, wherein the reinforcing capillary has a hole or groove for containing and supporting the output light optical fiber therein, a connecting face thereof bonded to an output end face of the substrate, and a terminal surface opposite to the connecting face, to thereby enable at least one member of the reinforcing capillary per se and a monitoring light optical fiber located within the capillary to receive the monitoring light outputted from the optical waveguide element, to transmit it therethrough and to output it to the outside of the capillary, and the monitoring light receiving means is located in a position suitable to receive the monitoring light outputted to the outside of the reinforcing capillary and has a photoelectric conversion element. | ||||||
| 162 | Light modulation apparatus and light modulator control method | US11527561 | 2006-09-27 | US20070070488A1 | 2007-03-29 | Akira Miura; Kenji Uchida; Katsuya Ikezawa; Hiroyuki Matsuura; Akira Toyama; Toshiaki Kobayashi; Tsuyoshi Yakihara; Kousuke Doi |
| A light modulation apparatus including a Mach-Zehnder type light modulator, a driver for modulator outputting a control signal according to an input electric signal, a light branching circuit branching the output light signal, and a bias control circuit applying a bias voltage to the light modulator based on the branched light signal, the apparatus further comprises: a burst pause state detection circuit detecting a pause state of a burst signal included in the input electric signal; a photoelectric transducer converting an output light signal branched by the light branching circuit into an electric signal; a sampling circuit extracting the electric signal converted while the pause state is detected by the burst pause state; and a bias voltage adjustment circuit adjusting a bias voltage value of the bias voltage based on a voltage level of the extracted electric signal. | ||||||
| 163 | LCD device with improved optical performance | US11154773 | 2005-06-15 | US20060284811A1 | 2006-12-21 | Hsueh-Ying Huang |
| In an LCD pixel, the pixel voltage is usually reduced after a gate line signal has passed. To compensate for this voltage reduction, the voltage applied to the charge storage capacitor in the pixel is increased from Vcom to Vcom1 after the gate line signal has passed. Voltage adjustment can be achieved by using two switching elements connected to the second end of the charge storage capacitor. One is activated by the gate line signal so that the applied voltage is equal to Vcom, and the other is activated by the next gate line signal so that the applied is increased to Vcom1. In a transflective LCD panel or a color LCD panel, each pixel is divided into two or three sub-pixels, each sub-pixel having a separate charge storage capacitor, a similar Vcom change is applied to each of the charge storage capacitors in the pixel. | ||||||
| 164 | Electro-optic modulator with particular diffused buffer layer | US10827926 | 2004-04-19 | US07123784B2 | 2006-10-17 | Masahiro Sato |
| An electro-optic modulator (300) comprises a substrate (310) made of a material which has an electro-optic effect and a pyroelectric effect. In the substrate (310), an optical waveguide (320) is formed to have at least a pair of optical paths. On the substrate (310) and on the optical waveguide (320), a transparent buffer layer (330) is formed to cover the optical waveguide (320). On the buffer layer (330), first and second electrodes (341, 342) are formed so that the first and the second electrodes (341, 342) are arranged to cause refractive index changes in the pair of optical paths in response to electrical fields surrounding the electro-optic modulator (300). The buffer layer (330) is a mutual diffusion layer. The mutual diffusion layer is made from laminated films comprised of at least one transparent insulator film and at least one transparent conductor film but has no clear boundary between the transparent insulator film and the transparent conductor film. | ||||||
| 165 | Pockels cell | US10523282 | 2003-12-18 | US20060187521A1 | 2006-08-24 | Stefan Balle; Sven Poggel; Thomas Fehn |
| The invention relates to a pockels cell comprising two spaced-apart cuboidal RTP crystals that have a square cross section, are located one behind another, and are oriented towards each other so as to provide thermal compensation in the direction of radiation. Each of said RTP crystals is provided with electrodes on two opposite faces, said faces of one crystal being rotated by 90° relative to the faces of the other crystal and relative to the direction of radiation (5). Flexible, electrically insulating, high voltage-proof plastic mats which conduct heat well and rest against the inside of a cooling member are provided around the exterior faces of the electrodes. | ||||||
| 166 | Optical waveguide modulator equipped with an output light monitor | US11352060 | 2006-02-09 | US20060133713A1 | 2006-06-22 | Manabu Yamada; Norikazu Miyazaki; Tokutaka Hara |
| An optical waveguide element having a plurality of surface waveguide portions. A connecting portion for connecting the surface waveguide portions. An output light-outputting waveguide portion connected to the connecting portion each on a dielectric substrate. An output light optical fiber connected to an output end of the output light-outputting waveguide portion. A reinforcing capillary for a connection between the optical waveguide element and the output light optical fiber and a monitoring light receiver. The reinforcing capillary has a hole or groove for supporting the output light optical fiber, a connecting face bonded to an output end face of the substrate, and a terminal surface opposite to the connecting face. The light outputted from the optical waveguide element, therethrough to the outside of the capillary. | ||||||
| 167 | Low bias drift modulator with buffer layer | US11189449 | 2005-07-26 | US20060023288A1 | 2006-02-02 | Gregory McBrien; Karl Kissa; Glen Drake; Kate Versprille |
| The invention relates to an electro-optic modulator structure containing an additional set of bias electrodes buried within the device for applying bias to set the operating point. Thus the RF electrodes used to modulate incoming optical signals can be operated with zero DC bias, reducing electrode corrosion by galvanic and other effects that can be present in non-hermetic packages. The buried bias electrodes are also advantageous in controlling charge build-up with consequent improvement in drift characteristics. The bias electrode material is useful for routing bias signals inside the device, in particular to external terminals, as well as forming encapsulating layers to permit operation in non-hermetic environments, thereby lowering manufacturing costs. Embodiments using both X-cut and Z-cut lithium niobate (LiNbO3) are presented. For the latter, the bias electrodes can be split along their axis to avoid optical losses | ||||||
| 168 | Optical waveguide device | US10451435 | 2001-11-28 | US06980705B2 | 2005-12-27 | Yasuyuki Miyama; Hirotoshi Nagata; Toshihiro Sakamoto |
| A first film (8) is formed between a substrate (1) and a signal electrode (3); ground electrodes (5) and (6) which constitute an optical waveguide device (10), and a second film (9) is formed between the substrate (1) and a signal electrode (4); ground electrodes (6) and (7). An optical phase modulator (10A) is composed of the substrate (1), an optical waveguide (2), the signal electrode (3), the ground electrodes (5) and (6), and the first film (8). An optical intensity modulator (10B) is composed of the substrate (1), the optical waveguide (2), the signal electrode (4), the ground electrodes (6) and (7), and the second film (9). The optical waveguide device (10) is composed of the optical phase modulator (10A) and the optical intensity modulator (10B), which are integrated monolithically. | ||||||
| 169 | Waveguide modulators having bias control with reduced temperature dependence | US10454077 | 2003-06-04 | US06978056B2 | 2005-12-20 | Robert Tavlykaev |
| Optical modulators with reduced temperature dependence on bias control are described. A set of bias electrodes is arranged relative to a set of RF electrodes in a manner which results in the opening point of the device remaining relatively constant as a function of temperature. The arrangement of the bias electrodes relative to the RF electrodes includes a physical offset of one set of electrodes relative to the other, with or without a reversal of polarity of one set of electrodes relative to the other. Arrangements according to the present invention create a symmetrical electrode arrangement from a temperature-induced stress point of view so that the operating point of the device remains relatively constant as a function of temperature. | ||||||
| 170 | Calibrating voltage controllable optical components in communication systems | US10467548 | 2002-02-01 | US06930814B2 | 2005-08-16 | Peter James Livermore; Graham Butler; Michael Leach; Darren Vass |
| A method of, and apparatus for, setting an operating (control) voltage of a voltage controllable optical component, such as a Mach-Zehnder optical modulator, having a periodic voltage/optical parameter (optical power) characteristic include an up/down counter and a digital to analog converter operable to set the voltage applied to the component to a predetermined initial value, a device for measuring the optical parameter, and another device for sequentially progressively increasing and decreasing the voltage (incrementing/decrementing the counter) with respect to the predetermined value, and for determining respective voltage values which produce maximum and minimum values of the optical parameter. The voltage is set to a value intermediate the maximum and minimum voltage values. Further, the apparatus determines the sense of the slope of that portion of the periodic characteristic lying between the maximum and minimum values for use by a control loop during subsequent operation of the optical component. | ||||||
| 171 | Buffer layer structures for stabilization of a lithium niobate device | US10602833 | 2003-06-25 | US06925211B2 | 2005-08-02 | William K. Burns; Larry A. Hess; Vishal Agarwal |
| An optical waveguide device including an electro-optical crystal substrate having a top surface and a bottom surface; an optical waveguide path formed within a surface of the electro-optical crystal substrate; at least one electrode positioned above the optical waveguide path for applying an electric field to the optical waveguide path; and a silicon titanium oxynitride layer and a connecting layer for interconnecting the silicon titanium oxynitride layer to another surface of the electro-optical crystal substrate that is opposite to the surface in which the optical waveguide path is formed. | ||||||
| 172 | Faraday rotator | US10702457 | 2003-11-07 | US06867895B2 | 2005-03-15 | Hiroshi Nagaeda |
| A Faraday rotator which is improved in temperature-dependent Faraday rotation angle characteristic and thus in quality. Faraday rotation is caused by a first magnetic field applied to a magneto-optical crystal of the Faraday rotator, and the Faraday rotation angle is controlled by a second magnetic field over an entire variable strength range of the second magnetic field. The magneto-optical crystal is positioned in such a manner that the direction of a combined magnetic field of the first and second magnetic fields, except for the direction of the first magnetic field, is variable intermediately between easy and hard magnetization axes of the magneto-optical crystal. | ||||||
| 173 | Buffer layer structures for stabilization of a lithium niobate device | US10602833 | 2003-06-25 | US20050047720A1 | 2005-03-03 | William Burns; Larry Hess; Vishal Agarwal |
| An optical waveguide device including an electro-optical crystal substrate having a top surface and a bottom surface; an optical waveguide path formed within a surface of the electro-optical crystal substrate; at least one electrode positioned above the optical waveguide path for applying an electric field to the optical waveguide path; and a silicon titanium oxynitride layer and a connecting layer for interconnecting the silicon titanium oxynitride layer to another surface of the electro-optical crystal substrate that is opposite to the surface in which the optical waveguide path is formed. | ||||||
| 174 | Optical waveguide device, and a travelling wave form optical modulator | US10495340 | 2004-05-20 | US20040264832A1 | 2004-12-30 | Jungo Kondo; Atsuo Kondo; Kenji Aoki; Osamu Mitomi |
| An optical waveguide device 1 has an optical waveguide substrate 19, a supporting body 2 for supporting the substrate 19 and a joining layer 3 for joining the substrate 19 and the supporting body 2. The substrate 19 has a flat plate-shaped main body 4 made of an electro-optic material with a thickness of 30 nullm or smaller and having first and second main faces 4a and 4b opposing each other, an optical waveguide provided on the side of the first main face 4a of the main body 4, and electrodes 7A to 7C provided on the side of the first main face 4a of the main body 4. The joining layer 3 joins the supporting body 2 at a joining face 4d and the second main face 4d of the main body 4. The joining face 2a of the supporting body 2 is substantially flat. Alternatively, the joining layer 3 has a thickness of 200 nullm or lower. | ||||||
| 175 | Waveguide modulators having bias control with reduced temperature dependence | US10454077 | 2003-06-04 | US20040247225A1 | 2004-12-09 | Robert Tavlykaev |
| Optical modulators with reduced temperature dependence on bias control are described. A set of bias electrodes is arranged relative to a set of RF electrodes in a manner which results in the operating point of the device remaining relatively constant as a function of temperature. The arrangement of the bias electrodes relative to the RF electrodes includes a physical offset of one set of electrodes relative to the other, with or without a reversal of polarity of one set of electrodes relative to the other. Arrangements according to the present invention create a symmetrical electrode arrangement from a temperature-induced stress point of view so that the operating point of the device remains relatively constant as a function of temperature. | ||||||
| 176 | Electro-optic modulator | US10827926 | 2004-04-19 | US20040228565A1 | 2004-11-18 | Masahiro Sato |
| An electro-optic modulator (300) comprises a substrate (310) made of a material which has an electro-optic effect and a pyroelectric effect. In the substrate (310), an optical waveguide (320) is formed to have at least a pair of optical paths. On the substrate (310) and on the optical waveguide (320), a transparent buffer layer (330) is formed to cover the optical waveguide (320). On the buffer layer (330), first and second electrodes (341, 342) are formed so that the first and the second electrodes (341, 342) are arranged to cause refractive index changes in the pair of optical paths in response to electrical fields surrounding the electro-optic modulator (300). The buffer layer (330) is a mutual diffusion layer. The mutual diffusion layer is made from laminated films comprised of at least one transparent insulator film and at least one transparent conductor film but has no clear boundary between the transparent insulator film and the transparent conductor film. | ||||||
| 177 | Liquid crystal display device with particular cell gap | US09491585 | 2000-01-25 | US06806940B1 | 2004-10-19 | Takuya Noguchi; Kazuya Yoshimura |
| A liquid crystal display device includes a pair of insulating substrates bonded to each other via a sealing material, and liquid crystal filled between a pair of the insulating substrates. A cell gap is formed so as to gradually increase from the center to an end of a display area at room temperature. According to this arrangement, it is possible to smooth out a difference in thermal expansion between the liquid crystal and the sealing material when an atmospheric temperature rises, and it is possible to prevent a cell gap from being too large in the center of the display area. Consequently, an irregular display color can be eliminated. | ||||||
| 178 | Liquid crystal display apparatus | US10393323 | 2003-03-20 | US20040119678A1 | 2004-06-24 | Tomoo Izumi |
| A liquid crystal display apparatus has a liquid crystal display with a plurality of pixels arranged in a matrix, a scanning electrode driver and a signal electrode driver for driving the liquid crystal display, and a controller which controls the scanning electrode driver to change waveforms of pulses output therefrom with changes in circumstantial temperature of the liquid crystal display. The controller controls the scanning electrode driver to heighten a selection pulse voltage and to narrow a selection pulse width with a rise in circumstantial temperature and to lower the selection pulse voltage and to widen the selection pulse width with a fall in circumstantial temperature. | ||||||
| 179 | Optical waveguide device | US10451435 | 2003-11-12 | US20040067021A1 | 2004-04-08 | Yasuyuki Miyama; Hirotoshi Nagata; Toshihiro Sakamoto |
| A first film (8) is formed between a substrate (1) and a signal electrode (3); ground electrodes (5) and (6) which constitute an optical waveguide device (10), and a second film (9) is formed between the substrate (1) and a signal electrode (4); ground electrodes (6) and (7). An optical phase modulator (10A) is composed of the substrate (1), an optical waveguide (2), the signal electrode (3), the ground electrodes (5) and (6), and the first film (8). An optical intensity modulator (10B) is composed of the substrate (1), the optical waveguide (2), the signal electrode (4), the ground electrodes (6) and (7), and the second film (9). The optical waveguide device (10) is composed of the optical phase modulator (10A) and the optical intensity modulator (10B), which are integrated monolithically. | ||||||
| 180 | Electro-optic spatial modulator for high energy density | US10235329 | 2002-09-06 | US20040047025A1 | 2004-03-11 | Michel Moulin |
| The present invention provides an imaging assembly comprising: (a) a modulator crystal comprising a first surface and a second surface substantially opposite to the first surface, wherein the first surface comprises an active area; and (b) a heating element for heating the modulator crystal to a temperature within a predetermined temperature range, wherein the heating element is positioned under the modulator crystal and comprises a first surface, wherein the heating element first surface faces the modulator crystal second surface and covers a portion of the modulator crystal second surface such that the active area of the first surface of the modulator crystal has a homogeneous temperature. The present invention also provides a method for heating a modulator crystal in an imaging assembly, the method comprising: (a) providing a modulator crystal comprising a first surface and a second surface substantially opposite to the first surface, wherein the first surface comprises an active area; (b) providing a heating element comprising a first surface, wherein the heating element first surface faces the modulator crystal second surface and covers a portion of the modulator crystal second surface such that the active area of the first surface of the modulator crystal has a homogeneous temperature; (c) heating the modulator crystal with the heating element to a temperature within a predetermined temperature range; and (d) maintaining the temperature of the modulator crystal within the predetermined temperature range. | ||||||
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