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公开(公告)号：JPS63210911A
公开(公告)日：1988-09-01
申请号：JP4636987
申请日：1987-02-27
Applicant: NGK INSULATORS LTD
Inventor： TOYODA SHUHEI , MASE SHUNZO , MATSUURA MASAMI
Abstract: PURPOSE:To form a compound body of optical elements having characteristics stabilized to environmental temp. change by interposing an intermediate body having a coefft. of thermal expansion close to the thermal expansion of the optical elements between at least one of the optical elements and a substrate, and fixing the intermediate body to each of the optical elements and the substrate. CONSTITUTION:It is preferred that an intermediate body to be interposed between optical elements and a substrate has a coefft. of thermal expansion alpha3 satisfying a relation expressed by ¦alpha1-alpha3¦ / deg.C coefft. of thermal expansion is interposed between a single crystal 3 of Bi12SiO20 and a CaTiO3 substrate 10. By this constitution, the output of the compound optical elements is discharged stably without being influenced by the change of environmental temp.
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公开(公告)号：JP2004245853A
公开(公告)日：2004-09-02
申请号：JP2003011554
申请日：2003-01-20
Applicant: Ngk Insulators Ltd , 日本碍子株式会社
Inventor： TOYODA SHUHEI , FUKUYAMA MASASHI
IPC: G02B6/40 , G02B6/42 , H01L31/0232
Abstract: PROBLEM TO BE SOLVED: To enable an optical fiber array to transmit optical signals satisfactorily without causing position-shifting and displacing the optical fibers 7 even when a slit is formed by being applied with cutting working.
SOLUTION: This optical fiber array has a holding substrate 3 on whose surface V-grooves 2, each of which holds an optical fiver 7 are formed, adhesives 8 which are filled in the V-grooves 2 and fix the optical fibers 7 and a slit 15 which is cut and worked on the holding substrate 3 so as to cut the optical fibers 7 in a direction traversing the fibers 7. Moreover, the angle of the V-groove 2 is made to be ≥45° and ≤95°.
COPYRIGHT: (C)2004,JPO&NCIPI-
公开(公告)号：JP2000284137A
公开(公告)日：2000-10-13
申请号：JP9302399
申请日：1999-03-31
Applicant: NGK INSULATORS LTD
Inventor： FUWA TORU , TOYODA SHUHEI
Abstract: PROBLEM TO BE SOLVED: To provide a method of forming a SiO2 buffer layer by which etching to produce a perpendicular cross section is possible without using dry etching, and the center electrode is not deteriorated. SOLUTION: By this method, a Si layer 3 is formed by aligning and growing Si on a LiNbO3 substrate 1 having an optical waveguide 2 formed, and the surface of the layer in the region except for the etching region is oxidized to form a SiI2 film 5. The SiO2 film 5 is used as a mask to subject Si to anisotropic wet etching, and then the Si layer in the region where the SiO2 film is formed is oxidized to form a SiO2 layer 7.
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公开(公告)号：JP2000241780A
公开(公告)日：2000-09-08
申请号：JP4518999
申请日：1999-02-23
Applicant: NGK INSULATORS LTD
Inventor： NOMOTO SUSUMU , KATO HIROSHI , TOYODA SHUHEI
Abstract: PROBLEM TO BE SOLVED: To improve a propagative characteristic without largely converting a propagation mode from a coplanar type to a micro-strip type, to facilitate a connection between a coaxial connector and a signal pin, to eliminate a positional deviation of a signal pint, to reduce an impedance change and to stabilize a characteristic. SOLUTION: A feedthrough substrate 30 constitutes a coplanar structure so that a signal electrode 31 connected to a central conductor of an input/output coaxial connector and ground electrodes 32, 33 connected to an outside conductor are placed on the same plane, and having a lower surface electrode having an electric connection in its member, and the signal electrode 31 connected to the input/output coaxial connector has a tapered shape expanding from an electrooptical crystal substrate side to the input/output coaxial connector side. Then, the signal electrode 31 is connected with the signal electrode 11 with a connection wire 41 of an LN chip, and the ground electrodes 32, 33 are connected with the ground electrodes 12, 13 of the LN chip with the connection wires 42, 43.
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公开(公告)号：JPH04274478A
公开(公告)日：1992-09-30
申请号：JP5762491
申请日：1991-03-01
Applicant: NGK INSULATORS LTD
Inventor： TOYODA SHUHEI , OSUGI YUKIHISA
Abstract: PURPOSE:To obtain a clear stereoscopic image with high resolution by the tomographic image stereoscopy device which uses an ultrasonic wave, HNMR, X rays, etc. CONSTITUTION:A 1st light source 14 oscillates coherent light for writing as shown by an arrow A. A specific tomographic image information source 12 sends information on a tomographic image crossing an object along a specific sectional position to a CPU 13, which performs arithmetic matching the operation of a modulator 15. The modulator 15 imposes intensity modulation and direction modulation on the coherent light for writing according to tomographic image information after the arithmetic processing. A PROM element 11 is scanned in plane with the coherent light for writing to write the tomographic image information. Coherent light for reading which is transmitted through the PROM element 11 is used as object light to write interference fringes formed between this object light and reference light on a dry plate 19 for a hologram.
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Patent Agency Ranking
公开(公告)号：JPH03215386A
公开(公告)日：1991-09-20
申请号：JP657990
申请日：1990-01-16
Applicant: NGK INSULATORS LTD
Inventor： TAKAHASHI AKIHIRO , TOYODA SHUHEI , OBUCHI TAKESHI , OKUMURA ATSUSHI
Abstract: PURPOSE:To effectively control shape of a solid-liquid interface in melt in pulling up of crystal to improve quality of a single crystal by growing an oxide single crystal from melt in a crucible with making a ratio of a crystalline diameter of pulledup single crystal to an inner diameter of the crucible in a specific range. CONSTITUTION:An oxide single crystal is grown with making a ratio of a crystalline diameter of pulled-up single crystal to an inner diameter of a crucible to 0.65-0.75 in growing the oxide single crystal from melt in the crucible by a pulling-up method. Said method is utilizable to all of various methods in the pulling-up method, thus an oxide single crystal such as LiNbO3 or LiTaO3 is advantageously obtained. For =0.75 of said ratio, crystallinity is also decreased, while the shape of the interface is downwardly protruding, thus improving of quality of the resultant single crystal 8 is difficult.
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公开(公告)号：JP2002311310A
公开(公告)日：2002-10-23
申请号：JP2002043990
申请日：2002-02-20
Applicant: NGK INSULATORS LTD
Inventor： IWASAKI YASUNORI , EICHENBERGER JEROME , KELLER CHRIS LEE , TOYODA SHUHEI
IPC: G02B6/38 , G02B6/42 , H01L31/0232 , H01S5/022
Abstract: PROBLEM TO BE SOLVED: To make it possible for two 4-channel transceivers having a transmission diode string and a reception diode string installed separately to use a single 8-fiber ribbon. SOLUTION: An optical head has an optical head main body 40 having a proximal surface and a distal surface, and eight optical fiber segments 48 are extended via the main body 40. The respective segments 48 have fiber end parts at respective proximal surface and distal surface. The fiber end parts at the proximal surfaces are grouped into two fiber end part strings consisting of four fiber end parts which are equally separated from each other to be positioned respectively optically by a transmission chip 26 and a reception chip 28. The fiber end pars at the distal surface consist of a single string of the eight fiber end parts equally separated from each other.
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公开(公告)号：JPH11281374A
公开(公告)日：1999-10-15
申请号：JP8217598
申请日：1998-03-27
Applicant: Hitachi Cable Ltd , Ngk Insulators Ltd , 日本碍子株式会社 , 日立電線株式会社
Inventor： YUHARA TOSHIYA , SOEGAWA KOICHI , TETSU TOSHIYUKI , ONUKI WATARU , TOYODA SHUHEI , ICHIKI TAKENORI
CPC classification number: G02B6/4457 , G01C19/722
Abstract: PROBLEM TO BE SOLVED: To reduce the manufacturing costs of an optical fiber gyro by assembling it easily in units.
SOLUTION: An optical fiber gyro is provided with a fiber coil where an optical fiber of a continuous length is wound for a specific number of turns, a coupler for optically coupling an optical fiber that is led from a light source and that being connected to a photo detector, and an optical IC chip that is arranged between the fiber coil and the coupler and where a phase modulator and a polarizer are mounted on an optical waveguide. In the optical fiber gyro, a reel 40 for a fiber coil where the optical fiber of continuous length for constituting the fiber coil is wound for a specific number of turns, a reel 42 for a coupler where the optical fiber that is led in both directions from the coupler is wound for a specific number of turns, at least both reels 40 and 42, and a housing member 44 where a plurality of compartments (a reel placement region 94, a frame body 98, and a frame body 100) for accommodating a light source and the optical IC chip are formed.
COPYRIGHT: (C)1999,JPOAbstract translation: 要解决的问题：通过轻松组装光纤陀螺来降低制造成本。 解决方案：光纤陀螺仪设置有光纤线圈，其中连续长度的光纤缠绕一定数量的匝数;耦合器，用于光耦合从光源引出的光纤并连接到光纤 光检测器和布置在光纤线圈和耦合器之间并且相位调制器和偏振器安装在光波导上的光IC芯片。 在光纤陀螺中，用于构成光纤线圈的连续长度的光纤缠绕一定数量的匝的光纤线圈用卷轴40，用于耦合器的卷轴42，其中双向引导的光纤 从连接器卷绕特定数量的匝数，至少两个卷轴40和42以及壳体构件44，其中多个隔室（卷轴放置区域94，框架主体98和框架主体100）用于容纳 形成光源和光IC芯片。
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公开(公告)号：JPH10325914A
公开(公告)日：1998-12-08
申请号：JP8111898
申请日：1998-03-27
Applicant: NGK INSULATORS LTD
Inventor： OSUGI YUKIHISA , HAMASHIMA AKIRA , TOYODA SHUHEI , KOZUKA YOSHINARI , NAKASUJI YOSHIATSU
Abstract: PROBLEM TO BE SOLVED: To prevent a characteristic such as an insertion loss, etc., of light from deteriorating even when a heat shock or a heat cycle is applied in a wide temp. range. SOLUTION: An optical transmission member fixing device is provided with a substrate 17 provided with a housing groove 9 housing a core wire 8 and a cap 15 integrated with the substrate 17. A housing space 39 housing at least a coating part of an optical transmission member is provided between the substrate and the cap. The size of the housing space is larger than the size of the housing groove in viewing in the width direction of the optical transmission member. An adhesives 20 for fixing the core wire is filled up to the surround of the core wire 8 in the housing groove 9. The adhesives 21, 22 for fixing the optical transmission member is filled up to the surround of the optical transmission member in the housing space 39. The thickness of the adhesive surrounding the optical transmission member 8 in a boundary area 27 between the housing space 39 and the housing groove 9 is reduced continuously toward the housing groove 9 at least in the vicinity of the opening 9a of the end of the housing groove 9.
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公开(公告)号：JPH02244117A
公开(公告)日：1990-09-28
申请号：JP6503989
申请日：1989-03-17
Applicant: NGK INSULATORS LTD
Inventor： TOYODA SHUHEI , OSUGI YUKIHISA
Abstract: PURPOSE:To improve optical and electrical characteristics by optically polishing the adhesive surfaces of a single crystal plate having a photoconductive effect and electrooptical effect and insulating plates and adhering the plates by an optical adhesion (optical contact) method. CONSTITUTION:Side face parts 50a, 50b of the single crystal plate 50 having the photoconductive effect and electrooptical effect, side face parts 52a, 52b, 54a, 54b of the insulating plates 52, 54, and side face parts 56b, 58a of electrode plates 56, 58 which face the insulating plates 52, 54 are respectively optically polished. The dust, dirt, etc., of the side face parts 50a, 50b, 52a, 52b, 54a, 54b and 56b, 58a (side face parts A) as the adhesive surfaces are removed and the side face parts A to be adhered are brought into contact with each other and are so held and tightly adhered that these parts are pressed to stick to each other. The optically polished side face parts A are, therefore, put into the optically adhered (optical contact) state. Since adhesive agent of epoxy resins, etc., are not used at the time of such adhesion, various troubles, such as unequal images, due to the adhesive agents are eliminated.
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