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31. 发明专利

JPS5688103A DIFFRACTION GRATING 失效
公开(公告)号：JPS5688103A
公开(公告)日：1981-07-17
申请号：JP16513579
申请日：1979-12-19
申请人： FUJITSU LTD
发明人： NAKASHIMA HIROKI
IPC分类号： G01J3/18 , G02B5/18
摘要： PURPOSE:To inexpensively produce a precision diffraction grating by changing the sectional shape of an original grating by depositing means such as vapor deposition having directivity to the diffraction grating having beforehand been formed to a prescribed shape. CONSTITUTION:A evaporating source VPS of the same material as that of the base BA of the diffraction grating having beforehand been formed to a prescribed shape is placed in a position sufficiently apart from the base BA and vapor deposition is performed diagonally from the direction orthogonal to the grooves of the grating. A deposition layer PL2 is formed on said deposition layer PL1 while continuouly varying incident angles, and a reflection layer BS of Au or Al is formed thereon. It is equally well to use an ion beam sputtering method in place of vapor deposition and at the time of forming the deposition layer PL2, it is desirable to carry out vapor deposition while applying white light to the diffraction grating and supervising the same. Thereby, the precision diffraction grating is inexpensively manufactured.

32. 发明专利

JPS5632102A 44LAYER NONREFLECTING COAT 失效
公开(公告)号：JPS5632102A
公开(公告)日：1981-04-01
申请号：JP10807679
申请日：1979-08-27
申请人： FUJITSU LTD
发明人： KIYONO MINORU , NAKASHIMA HIROKI
IPC分类号： G02B1/11 , C03C17/34
摘要： PURPOSE:To enhance the performance and durability of the 4-layer nonreflecting coat obtainable by constituting the same with the 1st layer of SiO2 having the specific optical film pressure, the 2nd layer of TiO2, the 3rd layer of Al2O3 and the 4th layer of SiO2 successively toward the optical substrate. CONSTITUTION:The nonreflecting coat of having the 4-layer film constitution of the 1st, 2nd, 3rd and 4th layers toward the optical substrate is formed. The 1st layer of this 4-layer nonreflecting coat is constituted by SiO2, the 2nd layer by TiO2, the 3rd layer by Al2O3 and the 4th layer by SiO2; moreover, the optical film thicknesses of the 1st, 3rd and 4th layers are made 1/4 the design wavelength and the optical film thickness of the 2nd layer is made 1/2 the design wavelength. The nonreflecting coat obtainable by this superior in the close adhesiveness between the respective layers, is high in peeling resistance strength, and is superior in resistance to phyrical and chemical external effects. Further, it has the advantage of being adaptable to optical substrates having a wide range of refractive indexes.

33. 发明专利

JPS5394861A LOGICAL CIRCUIT ELEMENT USING MAGNETIC BUBBLE 失效
公开(公告)号：JPS5394861A
公开(公告)日：1978-08-19
申请号：JP957877
申请日：1977-01-31
申请人： FUJITSU LTD
发明人： NAKASHIMA HIROKI , MIYASHITA TSUTOMU , YONENOU KAZUNARI , ASAMA KUNIHIKO
IPC分类号： G11C11/14 , G06F7/48 , H03K19/168
摘要： PURPOSE:To improve the active margin properties as well as to ensure an application to a high speed, by applying the pulse-type bias magnetic field to the bubble magnetic domain and delivering the detection output corresponding to the bubble magnetic domain.

34. 发明专利

JPS57198460A FORMATION OF MASK FOR MATRIX WAVEGUIDE 失效
公开(公告)号：JPS57198460A
公开(公告)日：1982-12-06
申请号：JP8397981
申请日：1981-06-01
申请人： FUJITSU LTD
发明人： SAWAKI ITSUPEI , KIYONO MINORU , NAKASHIMA HIROKI
IPC分类号： G03F1/00 , G03F1/68 , G03F1/80 , H01L21/027
摘要： PURPOSE:To precisely form a waveguide mask in which waveguide patterns are intersected by positining masks having parallel waveguide patterns as an original pattern with previously arranged markers and then etching the masks again. CONSTITUTION:An original mask 1 formed by previously etching a negapattern consisting of 4 parallel lines 21, 24 for example on a chrominum mask 1 and marking markers 3, 3' and 4, 4' on positions corresponding to an angle when 4 waveguides are intersected with other waveguides at the angle is coated with photoresist. Subsequently, the same original mask 10 is rotated, respective markers 3, 4' and 3', 4 are positioned and these masks are exposed and etched, forming a composite matrix waveguide mask 100.

35. 发明专利

JPS57198427A LIGHT SOURCE ARRAYING DEVICE 失效
公开(公告)号：JPS57198427A
公开(公告)日：1982-12-06
申请号：JP8398481
申请日：1981-06-01
申请人： FUJITSU LTD
发明人： NAKASHIMA HIROKI
IPC分类号： G02B6/12 , G02B6/28 , G02B6/42 , G02F1/01 , G02F1/313 , H01S3/00
摘要： PURPOSE:To easily obtain a function equivalent to an arrayed light source by inserting an arrayed waveguide type device between the light source and an arraylike transmission line as an external modulation element. CONSTITUTION:A titled device leads continuous or pulselike modulated oscillation light from a light emitting source such as a single semiconductor laser into plural optical fibers. Waveguide light led from a semiconductor laser 1 into a main waveguide 3 formed on a substrate 2 such as photoelectric crystal is led into a main waveguide 3' and also branched into branch waveguides 40-43 successively and these branched light rays are moreover branched into the 2nd branch waveguides 400-430 respectively, modulated by photoelectric modulators 50-53 provided in the branch waveguides and transmitted to a fiber array 6. Since these modulated signal light is independent and noninterferential, respectively, the semiconductor laser 1 has an function of just like an arrayed one.

36. 发明专利

JPS57198411A WAVEGUIDE TYPE BRANCH ELEMENT 失效
公开(公告)号：JPS57198411A
公开(公告)日：1982-12-06
申请号：JP8263181
申请日：1981-05-30
申请人： FUJITSU LTD
发明人： HORIMATSU TETSUO , MIYAUCHI EIZOU , NAKASHIMA HIROKI
IPC分类号： G02B6/122 , G02B6/26
摘要： PURPOSE:To simplify the production of the titled element, to miniaturize the structure and to omit reguration by forming plural straight optical waveguides on an optical waveguide forming member so as to be intersected with each other and constituting the system so that the ray of light incident upon a waveguide is distributed into other waveguide at a prescribed ratio. CONSTITUTION:Straight optical waveguides 1, 2 with 10mum width are formed on an optical waveguide forming member at the intersecting angle of phi. The ray of light incident upon an optical waveguide 1 as shown by an arrow is distributed into respective waveguides 1, 2 at an intersecting part 3. The distribution ratio is optionally determined by appropriately selecting the density of Ti or the like forming the optical waveguides by diffusing it on a substrate such as LiNbO3 and quartz and the intersecting angle phi. Since lenses, mirrors, etc. are not required for the element, the production is simplified, the element is miniaturized and its reguration is made unnecessary.

37. 发明专利

JPS57116316A FIBER TYPE DEFLECTOR AND SEPARATOR 失效
公开(公告)号：JPS57116316A
公开(公告)日：1982-07-20
申请号：JP294981
申请日：1981-01-12
申请人： FUJITSU LTD
发明人： NAKASHIMA HIROKI , KIYONO MINORU , MISHIRO EIJI
IPC分类号： G02B6/293 , G02B6/34 , G02B27/28
摘要： PURPOSE:To reduce the size of constitution by forming a dielectric multilayered- film polarizing filter on the surface of a fiber cut slantingly and polished, and by equipping a reflecting mirror which reflects light reflected by the fiber end surface so that it is in parallel to light passed through the fiber end surface. CONSTITUTION:A fiber B for light incidence is manufactured by forming a dielectric multilayered-film polarizing filter 11 on its end surface cut slantingly and polished by vapor deposition, and another fiber A has its end surface cut slantingly and then polished and provided with a reflecting mirror 12 which reflects light (c) reflected from the polarizing filter 11 on the end surface of the fiber B so that it is in parallel to light (b) transmitted through the end surface of the fiber B. Light transmitted through the optical fiber A is shown by (a). A polarizing filter 11 and a mirror 12 are added to the end surfaces of the fibers A and B.

38. 发明专利

JPS5790605A OPTICAL WAVEGUIDE AND ITS PRODUCTION 失效
公开(公告)号：JPS5790605A
公开(公告)日：1982-06-05
申请号：JP16747780
申请日：1980-11-28
申请人： FUJITSU LTD
发明人： KIYONO MINORU , NAKASHIMA HIROKI
IPC分类号： G02B6/13 , G02B6/134
摘要： PURPOSE:To form projecting regions diffused with titanium and to make the effect to confining light more powerful by forming diffusion type optical waveguide by diffusing titanium in a lithium niobate substrate then applying ion etching from the substrate surface. CONSTITUTION:Titanium (oxide) 2 is selectively stuck on the prescribed regions of a lithium niobate substrate 1 and heat treatment is applied to diffuse the titanium into the substrate 1, whereby optical waveguides 3 of diffusion type are formed. Thence, with the rmaining titanium (oxide) 2 as an etching mask, ion etching is carried out by using Argon or the like. Thereby projecting regions 4 are formed under the titaninum (oxide) 2 because the titanium (oxide) 2 is smaller in etching rate as compared to the substrate 1 and the waveguides 3. If necessary, further the ion etching is continued to remove the remaining titanium (oxide), whereby the intended waveguides 3 is obtained.

39. 发明专利

JPS5762023A Polarizing, separating and synthesizing device 失效
标题翻译：极化，分离和合成装置
公开(公告)号：JPS5762023A
公开(公告)日：1982-04-14
申请号：JP13806180
申请日：1980-10-02
申请人： Fujitsu Ltd
发明人： KIYONO MINORU , NAKASHIMA HIROKI
IPC分类号： G02B27/10 , G02F1/03
CPC分类号： G02F1/03
摘要： PURPOSE:To obtain an inexpensive, high-performance polarizing, separating and synthesizing dvice by forming and cementing polarizing filters on the flanks of a couple of symmetric electrooptic crystals, by mirror-finishing two flanks facing to the cemented surface, and by providing electrodes on both upper and lower surfaces. CONSTITUTION:On one flank 2 of an electrooptic crystal 1 of lithium niobate, a polarizing filter layer made of a dielectric multilayered film is formed. This crystal 1 is cemented to another cyrstal having the same structure to from a hexagonal body. On a flank 3, a mirror surface of a dielectric single-layered or multilayered film is provided and electrodes 7 are provided on upper and lower surfaces perpendicular to the mirror surface. Incident light enters the crystal 1 from an incidence surface 4; S-polarized light is reflected by a polarizing filter surface 2, and P-polarized light is transmitted. The separated S wave and P wave are reflected by the flank 3 and synthesized through the polarizing filter surface 2 to be emitted from a surface 5. While a voltage is applied to the electrodes 7, the S- and P-polarized waves are converted mutually and the resulting synthesized light is emitted from a surface 6. Consequently, an inexpensive, high-performance polarizing, separating and synthesizing device is obtained.
摘要翻译：目的：通过在两对对称电光晶体的侧面上形成和固定偏振滤光片，通过镜面修整面向胶合表面的两个侧面，以及通过提供电极来获得廉价的高性能偏振，分离和合成装置上表面和下表面。构成：在铌酸锂的电光晶体1的一个侧面2上形成由电介质多层膜制成的偏光滤光层。将该晶体1与六边形体结合到具有相同结构的另一个晶体。在侧面3上，设置电介质单层或多层膜的镜面，并且电极7设置在垂直于镜面的上表面和下表面上。入射光从入射面4进入晶体1; S偏振光被偏振滤光镜面2反射，P偏振光透过。分离的S波和P波被侧面3反射并通过偏振滤光器表面2合成，从表面5发射。当向电极7施加电压时，S和P偏振波相互转换所得到的合成光从表面6发射。因此，获得廉价的高性能偏振分离合成装置。

40. 发明专利

JPS5744110A Polarizer 失效
标题翻译：偏光镜
公开(公告)号：JPS5744110A
公开(公告)日：1982-03-12
申请号：JP11932480
申请日：1980-08-29
申请人： Fujitsu Ltd
发明人： NAKASHIMA HIROKI , KIYONO MINORU
IPC分类号： G02B5/30 , G02B6/00 , G02B6/34
CPC分类号： G02B6/2726 , G02B6/2766
摘要： PURPOSE:To obtain a small-sized and unified polarizer by providing a polarizing filter made of a multilayered dielectric film on an optical fiber end bevel and by connecting this polarizing filter hermetically to a high-refractive index substance. CONSTITUTION:An optical fiber 11 is polished slantingly to form an end surface 12, on which a multilayered dielectric film 13 as a polarizing filter is vacuum- deposited by using an electron beam. As dielectric materials, TiO2, SiO2, etc., are used and the film is composed of 20-30 layers by laminating an SiO2 film and a TiO2 film, each having a thousand - thousands Angstrom thickness, by turns. A Faraday rotator 14 is connected hermetically to the multilayered film 13, and a quarter- wavelength plate 15 to the rotator 14; and an optical fiber 11' having a multilayered film 13' similar to the said one on the end surface 12' is connected hermetically to the quarter-wavelength plate 15.
摘要翻译：目的：通过在光纤端面斜面上设置由多层电介质膜制成的偏振滤光片，并将该偏振滤光片气密地连接到高折射率物质，以获得小型和统一的偏振片。构成：将光纤11倾斜地抛光以形成端面12，通过使用电子束将作为偏振滤光器的多层电介质膜13进行真空沉积。作为电介质材料，使用TiO 2，SiO 2等，并且通过层叠二氧化硅膜和二氧化钛膜（它们各自具有几千埃厚度），由20-30层组成。法拉第旋转器14气密地连接到多层膜13，并且四分之一波长板15连接到转子14; 并且具有与端面12'上的所述相似的多层膜13'的光纤11'气密地连接到四分之一波长板15。

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