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39 条记录 (耗时 0.021 秒)

    Optical transmission line and a method of forming thereof
    21.
    发明授权
    Optical transmission line and a method of forming thereof 失效
    光传输线及其形成方法

    公开(公告)号：US5509098A

    公开(公告)日：1996-04-16

    申请号：US153055

    申请日：1993-11-17

    申请人： Masayuki Shigematsu ,  Masayuki Nishimura

    发明人： Masayuki Shigematsu ,  Masayuki Nishimura

    IPC分类号： H01S3/10 ,  H01S3/06 ,  H01S3/067 ,  H04B10/07 ,  H04B10/25 ,  H04B10/2557 ,  H04B10/2569 ,  H04B10/272 ,  H04B10/54 ,  H04B10/58 ,  G02B6/16 ,  H04B3/52

    CPC分类号： H04B10/2569

    摘要： In this invention, an optical analog signal obtained such that light having a wavelength .lambda.1 is intensity-modulated or frequency-modulated with a modulation index m per channel and a chirping amount .lambda.s for 100% modulation is transmitted. An optical element connected to an outlet of a transmission medium having a polarization mode dispersion .tau. with respect to an optical signal is selected such that when the optical signal output from the optical element requires a predetermined composite second-order distortion C, a transmittance T.sub.0 of the optical element for the light having the wavelength .lambda.1 and a polarization dependency A of an insertion loss satisfy the following condition:20 log.sub.10 {(2.pi.c/.lambda.1.sup.2).multidot.n.multidot.(A/T.sub.0).multidot..tau..multidot.m.multidot..lambda.s}.ltoreq.C(where n is a number of beats occurring in the optical signal and c is the light velocity).

    摘要翻译： 在本发明中，发送光学模拟信号，使得具有波长λ1的光被强制调制或频率调制，每通道调制指数m和100％调制的啁啾量λs。 选择连接到具有相对于光信号的偏振模色散T r的传输介质的出口的光学元件，使得当从光学元件输出的光信号需要预定的复合二阶失真C时，透射率T0 具有波长λ1的光和插入损耗的偏振依赖性A的光学元件满足以下条件：20log10 {（2πc/λ12）×nx（A / T0）×τxmxλs} = C（其中n是在光信号中发生的节拍数，c是光速）。

    Optical component, optical amplification module, and optical transmission system
    23.
    发明授权
    Optical component, optical amplification module, and optical transmission system 失效
    光学元件，光放大模块和光传输系统

    公开(公告)号：US07027215B2

    公开(公告)日：2006-04-11

    申请号：US10654987

    申请日：2003-09-05

    申请人： Hitoshi Hatayama ,  Motoki Kakui ,  Tatsuhiko Shitomi ,  Masayuki Shigematsu

    发明人： Hitoshi Hatayama ,  Motoki Kakui ,  Tatsuhiko Shitomi ,  Masayuki Shigematsu

    IPC分类号： H01S3/00 ,  G02B6/26

    CPC分类号： H04B10/2941 ,  G02F1/0147 ,  G02F1/225 ,  H04B2210/003

    摘要： The present invention relates to an optical component and others in structure capable of implementing improved compensation for a gain slope. The optical component is equipped with first and second Mach-Zehnder interferometers. The first Mach-Zehnder interferometer is provided with a first temperature controller for controlling a temperature of at least one of a part of an optical main path and a first optical side path, while the second Mach-Zehnder interferometer 42 is also provided with a second temperature controller for controlling a temperature of at least one of a part of the optical main path and a second optical side path. A filter circuit having a wavelength-dependent insertion loss is disposed between the first and second Mach-Zehnder interferometers, and a controller controls the temperatures of the optical paths by use of the first and second temperature controllers on the basis of the insertion loss of the filter circuit, thereby setting a loss for light of a predetermined wavelength propagating between a light input end and a light output end.

    摘要翻译： 本发明涉及能够对增益斜率进行改进补偿的结构的光学部件等。 光学元件配备有第一和第二马赫 - 曾德尔干涉仪。 第一马赫 - 策德尔干涉仪设置有用于控制光学主路径的一部分和第一光学侧路径中的至少一个的温度的第一温度控制器，而第二马赫 - 策德尔干涉仪42还设置有第二 温度控制器，用于控制光学主路径的一部分和第二光学侧路径中的至少一个的温度。 具有波长依赖性插入损耗的滤波器电路设置在第一和第二马赫 - 策德尔干涉仪之间，并且控制器基于第一和第二温度控制器的插入损耗来控制光路的温度 滤光器电路，从而设定在光输入端和光输出端之间传播的预定波长的光的损耗。

    Optical waveguide device and optical device having long-period grating
    24.
    发明授权
    Optical waveguide device and optical device having long-period grating 失效
    具有长周期光栅的光波导器件和光学器件

    公开(公告)号：US06317538B1

    公开(公告)日：2001-11-13

    申请号：US09206705

    申请日：1998-12-07

    申请人： Masakazu Shigehara ,  Masayuki Shigematsu ,  Motoki Kakui

    发明人： Masakazu Shigehara ,  Masayuki Shigematsu ,  Motoki Kakui

    IPC分类号： G02B634

    CPC分类号： G02B6/0218 ,  G02B6/0208 ,  G02B6/02095

    摘要： The present invention relates to an optical waveguide device having a plurality of long-period gratings, and an optical device equipped with the optical waveguide device. By providing a plurality of long-period gratings having loss wavelength characteristics different from each other, which fluctuate along with an environmental condition such as temperature or tension, within a core region of an optical waveguide device, the present invention enables the loss wavelength characteristic of the whole optical waveguide device to be regulated in response to the environmental change.

    摘要翻译： 本发明涉及具有多个长周期光栅的光波导器件，以及配备有该光波导器件的光学器件。 通过提供多个具有彼此不同的损耗波长特性的长周期光栅，其与光波导器件的芯区域内的环境条件如温度或张力一起波动，本发明能够实现波长特性的损失 整个光波导器件将根据环境变化进行调节。

    Optical phase conjugator, optical transmission system using the same, and optical phase conjugation method
    25.
    发明授权
    Optical phase conjugator, optical transmission system using the same, and optical phase conjugation method 失效
    光相位共轭器，使用其的光传输系统和光相位共轭方法

    公开(公告)号：US5694239A

    公开(公告)日：1997-12-02

    申请号：US498985

    申请日：1995-07-06

    申请人： Masayuki Shigematsu ,  Masayuki Nishimura

    发明人： Masayuki Shigematsu ,  Masayuki Nishimura

    IPC分类号： G02B6/00 ,  G02B6/122 ,  G02F1/35 ,  H01S3/067 ,  G02F1/39

    CPC分类号： H04B10/2531 ,  G02F1/3538 ,  H01S3/06754

    摘要： An optical phase conjugator includes an optical nonlinear medium for receiving original signal light and pumping light, and generating and outputting phase-conjugate light by a nonlinear optical effect. The optical nonlinear medium contains an element which can be activated upon irradiation of activation light and has an amplification function with respect to at least the pumping light. The optical phase conjugator comprises a first optical coupler for coupling the original signal light and the pumping light and then inputting the coupled light into the medium, and a second optical coupler for inputting the activation light into the medium. An improvement in phase-conjugate light generating efficiency is attained, and phase-conjugate light having a sufficiently high intensity can be obtained by the optical phase conjugator with a simple, compact arrangement.

    摘要翻译： 光相位共轭器包括用于接收原始信号光和泵浦光的光学非线性介质，并且通过非线性光学效应产生和输出相位共轭光。 光学非线性介质包含可以在激活光照射时被激活的元件，并且至少相对于泵浦光具有放大功能。 光相位共轭器包括用于耦合原始信号光和泵浦光，然后将耦合光输入介质的第一光耦合器，以及用于将激活光输入介质的第二光耦合器。 实现了相位共轭光产生效率的提高，并且通过光学相位共轭器以简单且紧凑的布置可以获得具有足够高强度的相位共轭光。

    Optical amplifier
    26.
    发明授权
    Optical amplifier 失效
    光放大器

    公开(公告)号：US5572356A

    公开(公告)日：1996-11-05

    申请号：US502618

    申请日：1995-07-14

    申请人： Ichiro Yoshida ,  Masayuki Shigematsu ,  Michio Murata

    发明人： Ichiro Yoshida ,  Masayuki Shigematsu ,  Michio Murata

    IPC分类号： H01S3/07 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/16 ,  H01S3/17 ,  H04B10/07 ,  H04B10/2507 ,  H04B10/29 ,  H04B10/293 ,  H01S3/00

    CPC分类号： H01S3/094003 ,  H01S3/1608

    摘要： The present invention provide an optical amplifier that excites a rare earth element dopant in a light transmitting medium with exciting light generated from a semiconductor laser such that the light propagating through the light transmitting medium is amplified, wherein drive power being supplied to drive the semiconductor laser is modulated with an AC component having a higher frequency than the frequency corresponding to the lifetime of the excited state of the ion of the rare earth element, and the drive current from the drive power has an amplitude which is higher than the threshold value of the semiconductor laser.

    摘要翻译： 本发明提供了一种光放大器，其在具有由半导体激光器产生的激发光的光透射介质中激发稀土元素掺杂剂，使得通过透光介质传播的光被放大，其中驱动功率被提供以驱动半导体激光器 用具有比对应于稀土元素的离子的激发态的寿命的频率高的频率的AC分量进行调制，并且来自驱动功率的驱动电流具有高于该稀土元素的阈值的幅度 半导体激光器

    Optical isolator
    27.
    发明授权
    Optical isolator 失效
    光隔离器

    公开(公告)号：US5381261A

    公开(公告)日：1995-01-10

    申请号：US937896

    申请日：1992-11-05

    申请人： Shigeru Hirai ,  Youichi Ishiguro ,  Yasuji Hattori ,  Masayuki Nishimura ,  Masayuki Shigematsu ,  Minoru Watanabe ,  Kouji Nakazato

    发明人： Shigeru Hirai ,  Youichi Ishiguro ,  Yasuji Hattori ,  Masayuki Nishimura ,  Masayuki Shigematsu ,  Minoru Watanabe ,  Kouji Nakazato

    IPC分类号： G02F1/09 ,  G02B5/30

    CPC分类号： G02F1/093 ,  G02F2203/06 ,  Y10S372/703

    摘要： An optical isolator not dependent on the plane of polarization of an incident beam and does not allow the plane of polarization to change on the outgoing side. The optical isolator comprises a first parallel flat double refractive crystal substance; a first Faraday rotor for rotating the plane of polarization of a beam; a second parallel flat double refractive crystal substance; a second Faraday rotor for rotating the plane of polarization in a direction opposite to that in which said first Faraday rotor rotates the plane of polarization; a third parallel flat double refractive substance; a fourth parallel flat double refractive substance; and permanent magnets for magnetizing the Faraday rotor and second Faraday rotors. Since a pair of Faraday rotors for rotating the plane of polarization in opposite directions, the plane of polarization on the incident side does not change on the outgoing side.

    摘要翻译： PCT No.PCT / JP92 / 00171 Sec。 371日期：1992年11月5日 102（e）日期1992年11月5日PCT提交1992年2月19日PCT公布。 出版物WO92 / 15040 日期：1992年9月3日。光隔离器不依赖于入射光束的偏振平面，不允许偏振平面在出射侧发生变化。 光隔离器包括第一平行扁平双折射晶体物质; 用于旋转梁的偏振平面的第一法拉第转子; 第二平行平面双折射晶体物质; 第二法拉第转子，用于在与所述第一法拉第转子旋转偏振平面的方向相反的方向上旋转偏振平面; 第三平行平面双折射物质; 第四平行平面双折射物质; 以及用于磁化法拉第转子和第二法拉第转子的永磁体。 由于用于在相反方向旋转偏振平面的一对法拉第转子，入射侧的偏振面在出射侧不变。