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公开(公告)号：US5854870A
公开(公告)日：1998-12-29
申请号：US027724
申请日：1993-03-04
申请人： Sten Helmfrid , Kenchi Ito , Kimio Tatsuno , Kazumi Kawamoto , Tetsuo Andou , Hiroshi Momiji , Osamu Komoda , Hisao Kurosawa , Masayoshi Sato , Fumio Nitanda , Kohei Ito
发明人： Sten Helmfrid , Kenchi Ito , Kimio Tatsuno , Kazumi Kawamoto , Tetsuo Andou , Hiroshi Momiji , Osamu Komoda , Hisao Kurosawa , Masayoshi Sato , Fumio Nitanda , Kohei Ito
CPC分类号： G02F1/3775 , G02F1/377 , G11B7/127 , G02F1/37 , G02F2001/3546 , H01S5/0092 , H01S5/02248 , H01S5/02288 , H01S5/141
摘要： There is disclosed a harmonic modulation device of waveguide type including a semiconductor laser, a waveguide for generating a nonlinear optical harmonic of the semiconductor laser by keeping phase matching, means for leading an optical beam of the semiconductor laser to the waveguide, electrodes disposed on the waveguide, and means for modulating a refractive index of the waveguide electro-optically to modulate a phase matching condition and thereby modulate an intensity of the harmonic.
摘要翻译： 公开了一种包括半导体激光器的波导型谐波调制装置，通过保持相位匹配产生半导体激光器的非线性光谐波的波导，将半导体激光器的光束引导到波导的装置， 波导，以及用于调制波导的光折射率以调制相位匹配条件并由此调制谐波强度的装置。
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公开(公告)号：US5274727A
公开(公告)日：1993-12-28
申请号：US879361
申请日：1992-05-07
申请人： Kenchi Ito , Kazumi Kawamoto , Hiroshi Momiji , Yasuo Hira , Hidemi Sato , Atsuko Fukushima
发明人： Kenchi Ito , Kazumi Kawamoto , Hiroshi Momiji , Yasuo Hira , Hidemi Sato , Atsuko Fukushima
CPC分类号： G02F1/3775
摘要： A second harmonic generator having a wide acceptance of bandwidth of temperature and/or a high conversion efficiency and a method of fabrication thereof are disclosed. An equidistant arrangement of pole-inverted grating having a rectangular sectional profile and the direction of spontaneous polarization opposite to that of a substrate within an optical waveguide has been known to produce a high conversion efficiency of the second harmonic generator A second harmonic generator having such a structure, which has so far been impossible to fabricate, is formed utilizing the liquid-phase epitaxial method and the ion-implanting method. Further, the substrate and the optical waveguide are formed of the same type of material. The temperature coefficient of the refractive index in the direction perpendicular to the substrate surface is rendered substantially equal to that of the optical waveguide, thereby improving the acceptance of bandwidth of temperature and making possible practical applications of the second harmonic generator.
摘要翻译： 公开了具有对温度带宽的广泛接受和/或高转换效率的二次谐波发生器及其制造方法。 已知具有矩形截面轮廓和与光波导内的衬底相反的自发极化方向的等反转光栅的等距布置产生二次谐波发生器A的高转换效率二次谐波发生器具有这样的 使用液相外延法和离子注入法形成迄今为止不可能制造的结构。 此外，基板和光波导由相同类型的材料形成。 使与基板表面垂直的方向的折射率的温度系数基本上等于光波导的温度系数，从而提高了温度带宽的接受性，并且可以实现二次谐波发生器的实际应用。
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公开(公告)号：US06597712B2
公开(公告)日：2003-07-22
申请号：US09934562
申请日：2001-08-23
IPC分类号： H01S313
CPC分类号： H01S5/0687 , H01S5/0064 , H01S5/0085 , H01S5/02216 , H01S5/02284 , H01S5/4012
摘要： In a wavelength locking optical system, a resonator is formed between a wavelength deviation detection device and a facet of the laser diode, which makes a control signal unstable. A solution to this problem is to arrange polarization controlling elements between a wavelength deviation detection filter and a laser diode to stabilize the deviation signal, and to perform wavelength-locking with the stabilizer signal.
摘要翻译： 在波长锁定光学系统中，在波长偏差检测装置和激光二极管的刻面之间形成谐振器，这使得控制信号不稳定。 该问题的解决方案是在波长偏差检测滤波器和激光二极管之间布置偏振控制元件以稳定偏差信号，并且利用稳定器信号执行波长锁定。
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公开(公告)号：US06983000B2
公开(公告)日：2006-01-03
申请号：US10618759
申请日：2003-07-15
CPC分类号： H01S5/0687 , H01S5/0064 , H01S5/0085 , H01S5/02216 , H01S5/02284 , H01S5/4012
摘要： A laser diode module includes a laser diode device, a first photo detector part for receiving, first divided light that is a first portion of light when at least one of light emissions of the laser diode device is divided into two portions of light each traveling a different optical path, a second photo detector part for receiving second divided light that is a second portion of light thus divided via at least a wavelength selective member, and a controller which controls the lasing wavelength of the laser diode device on the basis of outputs of the first and second photo detector parts. A beam splitter provided between the laser diode and the wavelength selective member divides light emitted from the laser diode into the first and second divided light and a quarter-wave plate is provided in an optical path between the beam splitter and the wavelength selective member.
摘要翻译： 激光二极管模块包括激光二极管器件，第一光电检测器部分，用于接收第一分光，该激光二极管器件的光发射中的至少一个被分成两部分光 不同光路的第二光检测器部分，用于接收作为通过至少一个波长选择部件分配的光的第二部分的第二分光的第二光检测器部分，以及基于输出的控制器来控制激光二极管器件的激光波长 第一和第二光电检测器部件。 设置在激光二极管和波长选择部件之间的分束器将从激光二极管发射的光分成第一和第二分光，四分之一波片设置在分束器和波长选择部件之间的光路中。
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5.发明授权
公开(公告)号：US5191624A
公开(公告)日：1993-03-02
申请号：US762935
申请日：1991-09-19
申请人： Kenchi Ito , Kazumi Kawamoto , Naoya Kanda , Yasuo Hira , Hidemi Sato , Atsuko Fukushima , Masataka Shiba , Akira Inagaki , Minoru Yoshida
发明人： Kenchi Ito , Kazumi Kawamoto , Naoya Kanda , Yasuo Hira , Hidemi Sato , Atsuko Fukushima , Masataka Shiba , Akira Inagaki , Minoru Yoshida
CPC分类号： G02B6/12004 , G02F1/335 , G11B7/1245
摘要： An optical waveguide is comprised of an optical substrate and an optical thin-film optical waveguide layer and formed such that ##EQU1## where .theta. is an output angle, n.sub.o1 is an ordinary refractive index of the optical substrate for an ordinary beam, n.sub.e1 is an extraordinary refractive index of the optical substrate for an extraordinary beam, n.sub.o2 is an ordinary refractive index of the optical thin-film optical waveguide layer for the ordinary beam and n.sub.e2 is an extraordinary refractive index of the optical thin-film optical waveguide layer for the extraordinary beam, and an electrode for generating a surface acoustic wave for diffracting light is formed on the optical waveguide to construct a collinear optical deflector. A method for production of the optical thin-film optical waveguide layer is exemplified wherein a target made of tantalic lilthium niobate or tantalic lithium niobate magnesium and an optical substrate made of lithium tantalate are prepared and an optical thin-film optical waveguide layer having a composition of tantalic lithium niobate or tantalic lithium niobate magnesium is formed on the optical substrate through an ion beam sputtering process into which oxygen can be introduced. Proton substitutes for part of an element constituting the optical thin-film optical waveguide layer.
摘要翻译： 光波导包括光学基板和光学薄膜光波导层，并且被形成为使得θ是输出角度的θIMA1是普通光束的光学基板的普通折射率，ne1是 用于非常光束的光学基板的非常折射率，no2是普通光束的光学薄膜光波导层的普通折射率，ne2是非常优异的光学薄膜光波导层的非常折射率 并且在光波导上形成用于产生用于衍射光的表面声波的电极，以构成共线的光学偏转器。 制备光学薄膜光波导层的方法被制备，其中制备由钽酸铌酸锂或钽酸铌镁制成的靶和由钽酸锂制成的光学衬底，并且制备具有组成的光学薄膜光波导层 通过可以引入氧气的离子束溅射工艺在光学基板上形成铌酸锂或钽酸铌酸镁。 质子代替构成光学薄膜光波导层的元件的一部分。
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公开(公告)号：US5187756A
公开(公告)日：1993-02-16
申请号：US758608
申请日：1991-09-12
申请人： Masataka Shiba , Akira Inagaki , Minoru Yoshida , Kenchi Ito , Kazumi Kawamoto
发明人： Masataka Shiba , Akira Inagaki , Minoru Yoshida , Kenchi Ito , Kazumi Kawamoto
CPC分类号： G02F1/125
摘要： The present invention relates to a surface acoustic wave element comprising a substrate, an optical waveguide layer formed on the aforesaid substrate to guide laser light from a laser light source, a surface acoustic wave portion for deflecting or modulating the laser light traveling through the aforesaid optical waveguide layer, a comb-shaped SAW electrode provided on the aforesaid optical waveguide layer to cause the aforesaid surface acoustic wave portion to generate surface acoustic wave, and a terminal provided on the aforesaid optical waveguide layer and connected to the aforesaid SAW electrode to apply a high-frequency alternating voltage thereto, wherein a protection cover is bonded by a viscoelastic adhesive having a refractive index smaller than that of the aforesaid optical waveguide layer to cover the aforesaid SAW electrode and surface acoustic wave portion with air space in such a manner that the aforesaid terminal is positioned outside thereof, and the manufacturing method of the surface acoustic wave element.
摘要翻译： 本发明涉及一种弹性表面波元件，包括基板，形成在上述基板上的用于引导来自激光光源的激光的光波导层，用于偏转或调制通过前述光学器件行进的激光的表面声波部分 波导层，设置在上述光波导层上的梳形SAW电极，使上述声表面波部分产生声表面波;以及端子，设置在上述光波导层上，并与上述SAW电极连接， 高频交流电压，其中保护盖通过具有比上述光波导层的折射率小的折射率的粘弹性粘合剂粘结，以覆盖上述SAW电极和具有空气空间的表面声波部分，使得 上述端子位于其外侧， 声表面波元件。
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7.发明授权Method and apparatus for measuring optical constants of a thin film as well as method and apparatus for fabricating a thin film utilizing same 失效用于测量薄膜的光学常数的方法和装置以及利用其制造薄膜的方法和装置
公开(公告)号：US5125740A
公开(公告)日：1992-06-30
申请号：US480649
申请日：1990-02-15
申请人： Hidemi Sato , Yasuo Hira , Atsuko Fukushima , Hiroshi Asao , Kazumi Kawamoto , Kenchi Ito , Ryuichi Funatsu
发明人： Hidemi Sato , Yasuo Hira , Atsuko Fukushima , Hiroshi Asao , Kazumi Kawamoto , Kenchi Ito , Ryuichi Funatsu
CPC分类号： G01N21/43 , G01N21/8422 , G01N2021/4126 , G01N21/412 , G01N21/552
摘要： A sample is located so as to be close to a prism and a light beam coming from a light source is projected to the prism while varying the incident angle to the prism as a parameter. The incident light beam to the prism is propagated therein and light emerging from the bottom surface of the prism, which is in contact with the sample, is projected to the sample. At the same time the intensity of light reflected by the bottom surface of the prism is measured. Optical constants such as the refractive index, the film thickness, the distribution of the refractive index, etc. are obtained by calculation, starting from measured values thus obtained.
摘要翻译： 将样品定位成靠近棱镜，并且来自光源的光束作为参数改变与棱镜的入射角度而投射到棱镜。 到棱镜的入射光束在其中传播，并且从与样品接触的棱镜的底表面出射的光被投射到样品。 同时测量由棱镜底面反射的光的强度。 光学常数如折射率，膜厚度，折射率分布等通过计算得到，从所获得的测量值开始。
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公开(公告)号：US5195070A
公开(公告)日：1993-03-16
申请号：US551794
申请日：1990-07-12
申请人： Masataka Shiba , Kazumi Kawamoto , Yasuo Hira , Akira Inagaki , Hidemi Sato , Kenchi Ito , Atsuko Fukushima , Ryuichi Funatsu
发明人： Masataka Shiba , Kazumi Kawamoto , Yasuo Hira , Akira Inagaki , Hidemi Sato , Kenchi Ito , Atsuko Fukushima , Ryuichi Funatsu
CPC分类号： G11B7/131 , G11B7/0903 , G11B7/1245 , G11B7/127 , G11B7/14
摘要： Using an optical pickup, recording/reproducing of information is performed by irradiating light beams to an optical recording medium to form light spots. The optical pickup includes means for generating plural light beams, an optical waveguide for guiding the plural light beams in a row into a flat space, and a light deflecting element for deflecting the light beams, which run in the optical waveguide, within a plane formed by a vector perpendicular to a plane of the optical waveguide and a directional vector of the light beams. The light deflecting element deflects the plural light spots, which are to be arranged in a row, in a direction perpendicular to the light spot row to perform micro seek.
摘要翻译： 使用光学拾取器，通过将光束照射到光学记录介质以形成光斑来进行信息的记录/再现。 光拾取器包括用于产生多个光束的装置，用于将多个光束一行地引导到平坦空间中的光波导和用于使在光波导中延伸的光束偏转在形成的平面内的光偏转元件 通过垂直于光波导的平面的矢量和光束的方向矢量。 光偏转元件在垂直于光点行的方向上偏转排列成一列的多个光点，以执行微寻迹。
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公开(公告)号：US5070488A
公开(公告)日：1991-12-03
申请号：US372639
申请日：1989-06-28
申请人： Atsuko Fukushima , Yasuo Hira , Hidemi Sato , Kazumi Kawamoto , Kenchi Ito , Masataka Shiba , Akira Arimoto
发明人： Atsuko Fukushima , Yasuo Hira , Hidemi Sato , Kazumi Kawamoto , Kenchi Ito , Masataka Shiba , Akira Arimoto
CPC分类号： G02B6/4246 , G02B6/124 , G02B6/34 , G02B6/42 , G02F1/335 , G11B7/1245 , G11B7/125 , G11B7/1384
摘要： An optical integrated circuit and an optical apparatus used in optical communication or an opto-electronics apparatus such as an optical disk recording apparatus, in which various kinds of aberration caused by wavelength variation of a light source when a semiconductor laser is used as the light source. An aberration correcting grating having such grating pitches as to nearly satisfy the Bragg condition preferably with respect to a certain wavelength of the semiconductor laser beam is used. As a result, lowering of incidence (entrance) and radiation (exit) coupling efficiencies of the grating coupler and aberration such as chromatic aberration can be prevented. Even if a multi-mode semiconductor laser is used as a light source, the characteristics of the optical integrated circuit and optical apparatus do not vary largely.
摘要翻译： 在光通信中使用的光集成电路和光学装置或光电记录装置等光电装置，其中当使用半导体激光器作为光源时，由光源的波长变化引起的各种像差 。 使用具有这样的光栅间距几乎满足布拉格条件的像差校正光栅，优选地相对于半导体激光束的特定波长。 结果，可以防止光栅耦合器的入射（入射）和辐射（出射）耦合效率的降低以及像差等像差。 即使使用多模式半导体激光器作为光源，光集成电路和光学装置的特性也不会很大变化。
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公开(公告)号：US07412120B2
公开(公告)日：2008-08-12
申请号：US11030106
申请日：2005-01-07
CPC分类号： G02B6/42 , H01L2224/48091 , H01L2924/3011 , H01L2924/3025 , H01S5/02276 , H01S5/06226 , H01S5/0683 , H01L2924/00014 , H01L2924/00
摘要： The present invention provides a structure that makes high-frequency transmission possible in an optical module and in the optical transmission apparatus using the module. The invention has means that excludes, from the service band of the optical module, frequency of the standing waves occurring at connection between the first high-frequency signal line substrate and second high-frequency signal line substrate in the optical module.
摘要翻译： 本发明提供一种在光模块和使用该模块的光传输装置中进行高频传输的结构。 本发明具有从光模块的服务频带排除在光模块中的第一高频信号线基板与第二高频信号线基板之间的连接处发生的驻波的频率的装置。
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