公开(公告)号：JP2006301612A

公开(公告)日：2006-11-02

申请号：JP2006081452

申请日：2006-03-23

Applicant: Sumitomo Osaka Cement Co Ltd ,  住友大阪セメント株式会社

Inventor： KONDO KATSUTOSHI ,  ICHIOKA MASAYUKI ,  JINRIKI TAKASHI ,  SUGAMATA TORU ,  ICHIKAWA JUNICHIRO

IPC: G02F1/035

Abstract: PROBLEM TO BE SOLVED: To provide an optical modulator capable of effectively separating the radiation light and propagation light in the optical modulator or removing the radiation light, and suppressing the loss of the optical modulator and the deterioration of an extinction ratio. SOLUTION: The optical modulator including a thin sheet of ≤20 μm in thickness formed of a material having an electrooptic effect, an optical waveguide formed on the front surface or the rear surface of the thin sheet and a modulating electrode formed on the front surface of the thin sheet to modulate the light passing the inside of the optical waveguide is characterized in that the optical waveguide has a multiplexing section to multiplex a plurality of the optical waveguide portions and has a shielding means for shielding a part of the radiation light. More preferably, the shielding means is a recessed part or a through-hole formed in the thin sheet and the distance closest to the waveguide is 5 to 10 μm and the length in the direction perpendicular to the waveguide is ≥0.5 times the fiber diameter. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够有效地分离光调制器中的辐射光和传播光或去除辐射光并抑制光调制器的损失和消光比的劣化的光调制器。 解决方案：光调制器包括由具有电光效应的材料形成的厚度≤20μm的薄片，形成在薄片的前表面或后表面上的光波导和形成在薄膜上的调制电极 所述薄片的前表面调制通过所述光波导内部的光，其特征在于，所述光波导具有多路复用多个所述光波导路部分的多路复用部分，并且具有用于屏蔽所述辐射光的一部分的屏蔽装置 。 更优选地，屏蔽装置是形成在薄片中的凹部或通孔，最靠近波导的距离为5至10μm，并且垂直于波导的方向的长度为纤维直径的≥0.5倍。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006284962A

公开(公告)日：2006-10-19

申请号：JP2005105403

申请日：2005-03-31

Applicant: Sumitomo Osaka Cement Co Ltd ,  住友大阪セメント株式会社

Inventor： YAMAMOTO FUTOSHI ,  KURIHARA MASANAO ,  KONDO KATSUTOSHI ,  ICHIOKA MASAYUKI ,  ICHIKAWA JUNICHIRO

IPC: G02F1/035 ,  G02B6/12

Abstract: PROBLEM TO BE SOLVED: To provide an optical element which uses a thin plate where an optical waveguide is formed and includes a reinforcing plate bonded to the reverse surface of the thin plate, the optical element being characterized in that the reinforcing plate functions as an underclad layer and the optical element is inexpensive and has small variance in performance. SOLUTION: The optical element including the thin plate 10 which is made of a single-crystal material having electrooptical effect and polished or processed with an ion beam to a thickness of 20 μm, ridge type optical waveguides 11 and 14 formed on the top surface of the thin plate, a modulating electrode for modulating light passing through the optical waveguide, and the reinforcing plate 12 bonded to the reverse surface of the thin plate is characterized in that the reinforcing plate is made of the same material with the thin plate and has a refractive index made less on its joined surface than the refractive index of the thin plate and a direct joining method is employed to join the thin plate and reinforcing plate together. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种光学元件，其使用形成光波导的薄板，并且包括结合到薄板的反面的加强板，光学元件的特征在于，加强板的功能 作为下层，光学元件便宜，性能差异小。 解决方案：包括由具有电光效应并用离子束抛光或加工成20μm厚度的单晶材料制成的薄板10的光学元件，形成在其上的脊型光波导11和14 薄板的顶表面，用于调制通过光波导的光的调制电极和与薄板的反面接合的加强板12的特征在于，加强板由与薄板相同的材料制成 并且在其接合表面上的折射率比薄板的折射率少，并且采用直接接合方法将薄板和增强板连接在一起。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2005275210A

公开(公告)日：2005-10-06

申请号：JP2004091141

申请日：2004-03-26

Applicant: National Institute For Materials Science ,  Sumitomo Osaka Cement Co Ltd ,  住友大阪セメント株式会社 ,  独立行政法人物質・材料研究機構

Inventor： OIKAWA SATORU ,  ICHIKAWA JUNICHIRO ,  YAMAMOTO FUTOSHI ,  KURIMURA SUNAO ,  KITAMURA KENJI

IPC: G02F1/035

Abstract: PROBLEM TO BE SOLVED: To provide an optical modulator which is high in degree of integration and compact and to provide an optical modulator which has a variety of functions of lowering a drive voltage, suppressing chirping, and eliminating dependency on polarization. SOLUTION: The optical modulator is equipped with a substrate 1 made of a material with electrooptical effect, top-surface-side optical waveguides 2-1 and 2-2 which are formed on the top surface of the substrate, a reverse-surface side optical waveguide which is formed on the reverse surface of the substrate, an electrode for top-surface-side control for controlling the phase of an optical wave propagated in the top-surface-side optical waveguide, and an electrode for reverse-surface-side control for controlling the phase of an optical wave propagated in the reverse-surface-side optical waveguide, and is characterized in that the optical waveguides formed on the different surface have an projection port and an incidence port and a return element 3 is arranged closely to one end surface to make an optical wave projected from the projection port incident on the incidence port. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 解决的问题：提供一种集成度高，结构紧凑的光调制器，并提供具有降低驱动电压，抑制啁啾和消除对极化的依赖性的各种功能的光调制器。 解决方案：光调制器配备有由具有电光效应的材料制成的基板1，形成在基板的顶表面上的顶表面侧光波导2-1和2-2， 形成在基板的背面上的表面侧光波导，用于控制在顶面侧光波导中传播的光波的相位的顶面控制用电极和反面用电极 用于控制在反面侧光波导中传播的光波的相位的控制，其特征在于，形成在不同表面上的光波导具有突出端口和入射端口，并且返回元件3布置 紧贴在一个端面上，使入射入射口的投影口投射出的光波。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005266363A

公开(公告)日：2005-09-29

申请号：JP2004079224

申请日：2004-03-18

Applicant: National Institute For Materials Science ,  Sumitomo Osaka Cement Co Ltd ,  住友大阪セメント株式会社 ,  独立行政法人物質・材料研究機構

Inventor： YAMAMOTO FUTOSHI ,  ICHIKAWA JUNICHIRO ,  OIKAWA SATORU ,  KURIMURA SUNAO ,  KITAMURA KENJI

IPC: G02F1/03 ,  G02F1/35

Abstract: PROBLEM TO BE SOLVED: To provide a polarization inversion forming method that can homogeneously generate a polarization inversion state in a polarization inversion area even when a region where polarization inversion is formed has a large area of ≥50 μm in width and reduce the intensity of a voltage applied during the polarization inversion. SOLUTION: The polarization inversion forming method of inverting the polarization of a desired region of a ferroelectric substrate 1 is characterized in that the polarization of the desired region 20 on a surface of the ferroelectric substrate is inverted by performing nucleus growth by jetting fine hard materials to the substrate surface, giving an impact with a strike member having a fine tip diameter, or rubbing fine hard materials scattered and arranged on the substrate surface, and then applying a specified voltage to the desired region. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 解决的问题：为了提供即使在形成极化反转的区域中也可以在极化反转区域中均匀地产生极化反转状态的极化反转形成方法具有宽度≥50μm的大面积，并且减少 在极化反转期间施加的电压的强度。 解决方案：将铁电体基板1的期望区域的极化反转的极化反转形成方法的特征在于，通过进行细胞核生长而使铁电体基板的表面上的所需区域20的极化发生反转 向基材表面施加硬质材料，使具有细尖端直径的冲击构件产生冲击，或者摩擦散布并布置在基板表面上的细小硬质材料，然后将特定电压施加到所需区域。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2005266362A

公开(公告)日：2005-09-29

申请号：JP2004079223

申请日：2004-03-18

Applicant: Sumitomo Osaka Cement Co Ltd ,  住友大阪セメント株式会社

Inventor： MORI SHINGO ,  ICHIOKA MASAYUKI ,  SATO YOICHI ,  ICHIKAWA JUNICHIRO

IPC: G02B6/12 ,  G02B6/287 ,  G02B27/28 ,  G02F1/035

Abstract: PROBLEM TO BE SOLVED: To provide an optical device independent on polarization that has few components and is easy to manufacture. SOLUTION: This device has: an optical element 20 dependent on polarization; a polarization separating means 24 to split the single input light having several polarized components into light waves having different polarized components; and a polarization-combining means 29 to combine light waves having single polarized components, to obtain a light wave having several polarized components. The device introduces the light wave from the polarization-separating means 24 to the optical element 20; and in the optical device constituted so as to introduce the light waves from the means 24 to the means 29, the polarization separating means 24 or the polarization compositing means 29 includes a polarization separating coupler, by using two polarization-keeping fibers, and ends 28 and 30 of one of this polarization-keeping fiber are turned and adjusted to a predetermined angle. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供独立于极少的组件和易于制造的光学装置。 解决方案：该装置具有：依赖于极化的光学元件20; 偏振分离装置24，将具有多个偏振分量的单输入光分成具有不同偏振分量的光波; 以及组合具有单极化分量的光波的偏振组合装置29，以获得具有多个偏振分量的光波。 该装置将来自偏振分离装置24的光波引入光学元件20; 并且在构成为将来自装置24的光波引入装置29的光学装置中，偏振分离装置24或偏振合成装置29包括偏振分离耦合器，通过使用两个偏振保持光纤和端部28 将该偏振保持光纤中的一个的30°转动并调整为规定的角度。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2005084090A

公开(公告)日：2005-03-31

申请号：JP2003312602

申请日：2003-09-04

Applicant: Sumitomo Osaka Cement Co Ltd ,  住友大阪セメント株式会社

Inventor： HARA NORITAKA ,  ICHIKAWA JUNICHIRO

IPC: G02B6/12 ,  G02B6/122 ,  G02F1/035

Abstract: PROBLEM TO BE SOLVED: To provide an integrated optical waveguide device with lower propagation loss while maintaining integration and improving compactness, even in the integrated optical waveguide device generating an optical beam having asymmetric intensity distribution. SOLUTION: The integrated optical waveguide device is provided with a substrate 30 consisting of a material having electro-optic effect, an optical waveguide 31 formed on the top side of the substrate, and an optical waveguide 32 formed on the bottom side of the substrate. On at least one end face of the substrate, the optical waveguides formed on the different sides are provided with an emission port 33 and an incidence port 34, respectively. A GRIN lens 10 is arranged adjacently to the one end face so that light emitted from the emission port enters the incidence port. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：即使在产生具有不对称强度分布的光束的集成光波导器件中，也提供具有较低传播损耗的集成光波导器件，同时保持集成度并提高致密性。 解决方案：集成光波导器件设置有由具有电光效应的材料构成的基板30，形成在基板的顶侧的光波导31和形成在基板的底侧的光波导32 底物。 在基板的至少一个端面上，形成在不同侧面的光波导分别设置有发射端口33和入射端口34。 GRIN透镜10被布置成与一个端面相邻，使得从排出口发射的光进入入射口。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2004245750A

公开(公告)日：2004-09-02

申请号：JP2003037456

申请日：2003-02-14

Applicant: Sumitomo Osaka Cement Co Ltd ,  住友大阪セメント株式会社

Inventor： HIKUMA KAORU ,  MORI SHINGO ,  HASHIMOTO YOSHIHIRO ,  ICHIKAWA JUNICHIRO

IPC: G01J3/10 ,  G01N21/01 ,  G01N21/27 ,  H04B10/00

Abstract: PROBLEM TO BE SOLVED: To provide an optical spectrum measuring method and its device capable of generating multiple-wavelength light with a simple structure, and performing high-resolution optical spectrum measurement and analysis.
SOLUTION: This optical spectrum measuring method has a means for generating measuring light having a changeable wavelength, and a detection means 9 for irradiating a specimen 8 with the measuring light and detecting transmitted light or reflected light from the specimen. The means for generating the measuring light having the changeable wavelength is characterized by being equipped with a light source 1 for generating reference light having a specific wavelength, and an SSB modulator 3 for shifting the wavelength of the reference light.
COPYRIGHT: (C)2004,JPO&NCIPI

公开(公告)号：JP2004125855A

公开(公告)日：2004-04-22

申请号：JP2002285722

申请日：2002-09-30

Applicant: Sumitomo Osaka Cement Co Ltd ,  住友大阪セメント株式会社

Inventor： ICHIKAWA JUNICHIRO ,  ICHIOKA MASAYUKI ,  HIKUMA KAORU ,  HARA NORITAKA

IPC: G02B6/12 ,  G02B6/122 ,  G02B6/13 ,  G02F1/035

Abstract: PROBLEM TO BE SOLVED: To provide a phase difference adjusting method for optical waveguide element such that the precision of phase difference adjustment of an optical waveguide element is high, the adjustment is easy, and its adjustment effect can be maintained for a long period. SOLUTION: In the phase difference adjusting method for the optical waveguide element equipped with a substrate having electrooptic effect and a Mach Zehnder optical waveguide formed on the substrate, the optical waveguide element is constituted as a module (10) and the substrate is heated when the phase difference of the optical waveguide element is adjusted to a specified value by irradiating a portion of the Mach Zehnder optical waveguide with the laser light from a laser light source 12 and the irradiation time and the area irradiated with the laser light are controlled while variation of a light signal from the projection light from the optical waveguide is monitored (17). COPYRIGHT: (C)2004,JPO

Abstract translation: 要解决的问题：为了提供光波导元件的相位差调整方法，使得光波导元件的相位差调整的精度高，调节容易，并且其调节效果可以保持长时间 期。 解决方案：在配置有具有电光效应的基板的光波导元件和形成在基板上的马赫曾德光波导的相位差调整方法中，光波导元件构成为模块（10），基板为 通过用来自激光光源12的激光照射马赫曾德光波导的一部分并且照射时间和激光照射的面积来控制光波导元件的相位差被调整为规定值的加热 同时监测来自光波导的投影光的光信号的变化（17）。 版权所有（C）2004，JPO

公开(公告)号：JP2004093905A

公开(公告)日：2004-03-25

申请号：JP2002254938

申请日：2002-08-30

Applicant: Sumitomo Osaka Cement Co Ltd ,  住友大阪セメント株式会社

Inventor： ICHIKAWA JUNICHIRO ,  ICHIOKA MASAYUKI ,  HARA NORITAKA ,  YAMANE YUJI

IPC: G02F1/03 ,  G02F1/225

CPC classification number: G02F1/225 ,  G02F1/0311 ,  G02F2201/08

Abstract: PROBLEM TO BE SOLVED: To provide an optical modulator in which photorefractive phenomenon caused by stray light beams within the modulator is suppressed and quenching ratio characteristics of signal light beams are improved. SOLUTION: The modulator is provided with a substrate which is made of material having an electrooptic effect, an optical waveguide formed on a substrate and a modulation electrode which applies electric field to the optical waveguide so as to change phases of the light beams passing through the optical waveguide. Stray light beams eliminating means 11 to 22 are provided on the surface of the substrate. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2003098496A

公开(公告)日：2003-04-03

申请号：JP2001293755

申请日：2001-09-26

Applicant: SUMITOMO OSAKA CEMENT CO LTD

Inventor： HARA NORITAKA ,  ICHIKAWA JUNICHIRO ,  OGURI HITOSHI ,  YANAGIMACHI TOMOMI

IPC: G02F1/03 ,  H01S5/0687

Abstract: PROBLEM TO BE SOLVED: To provide a new wavelength managing device which can make a transmission system simple and small-sized on the whole without lowering the intensity of light for transmission. SOLUTION: A capillary 13 is integrally provided in contact with an end surface 11A of a substrate 11 made of, for example, LiNbO3 having electrooptic effect. While an optical modulator 10 is off, radiation-mode light beams X and Y radiated from a coupling part 12A of an optical waveguide 12 have their optical paths changed by reflecting surfaces 13A and 13B to directions nearly perpendicular to their traveling directions. The radiation-mode light X is passed through a wavelength filter 14 to generate an electric signal A corresponding to intensity A and the electric signal is led out of an output terminal 19; and the radiation-mode light Y is passed through the wavelength filter to generate an electric signal B corresponding to intensity B and the signal is led out of an output terminal 20. Then the wavelength of a light wave guided in the optical modulator 10 is managed to constant wavelength by performing control so that an arithmetic value A/B becomes constant.