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    Method and system for generating short pulse signals
    82.
    发明授权
    Method and system for generating short pulse signals 有权
    用于产生短脉冲信号的方法和系统

    公开(公告)号：US06814376B2

    公开(公告)日：2004-11-09

    申请号：US10214532

    申请日：2002-08-08

    Applicant: Jianjun Yu ,  Keisuke Kojima

    Inventor： Jianjun Yu ,  Keisuke Kojima

    IPC: G02B600

    CPC classification number: H04B10/505 ,  G02F1/365 ,  G02F2201/02 ,  G02F2203/26 ,  H04B10/5051 ,  H04B10/508

    Abstract: A short pulse generation system and method of generating a short pulse signal are provided. The system includes a fiber chain having an input for receiving an optical signal having a plurality of optical pulses. The fiber chain is nonlinear with respect to the optical signal and includes a first normal fiber segment having a relatively small chromatic parameter, a first abnormal fiber segment having a relatively large chromatic parameter coupled to an output of the first normal fiber segment, and a second abnormal fiber segment having a relatively small chromatic parameter coupled to an out of the first abnormal fiber segment. The system includes a filter stage coupled to an output of the fiber chain and that has a transparent wavelength selected to regenerate the signal. A short pulse signal is produced when the optical signal is coupled to the input.

    Abstract translation: 提供了一种产生短脉冲信号的短脉冲发生系统和方法。 该系统包括具有用于接收具有多个光脉冲的光信号的输入的光纤链。 纤维链相对于光信号是非线性的，并且包括具有相对较小的色彩参数的第一正常光纤段，具有耦合到第一正常光纤段的输出的相对较大的色参数的第一异常光纤段， 具有耦合到第一异常纤维段外的相对较小的色参数的异常光纤段。 该系统包括耦合到光纤链的输出并且具有选择用于再生信号的透明波长的滤波器级。 当光信号耦合到输入端时产生短脉冲信号。

    Nonlinear optical device
    84.
    发明申请
    Nonlinear optical device 审中-公开
    非线性光学器件

    公开(公告)号：US20040028356A1

    公开(公告)日：2004-02-12

    申请号：US10275455

    申请日：2003-06-13

    Inventor： Timothy Birks ,  William John Wadsworth ,  Philip St. John Russell

    IPC: G02B006/00 ,  G02B006/26

    CPC classification number: G02F1/365 ,  G02F2001/3509 ,  G02F2201/02

    Abstract: A nonlinear optical device, comprises a source of input light having a first spectrum and an optical fibre 10 arranged so that in use the light propagates through the fibre 10, the optical fibre 10 comprises a tapered region including a waist 30, the waist 30 having a diameter smaller than 10 microns for a length of more than 20 mm, wherein the propagating light is converted by nonlinear optical processes into output light having a spectrum different from the first spectrum.

    Abstract translation: 非线性光学装置包括具有第一光谱的输入光源和光纤10，光纤10在使用中通过光纤10传播，光纤10包括包括腰部30的锥形区域，腰部30具有 直径小于10微米，长度大于20mm，其中传播光通过非线性光学过程转换成具有不同于第一光谱的光谱的输出光。

    Optical fiber
    85.
    发明授权
    Optical fiber 有权
    光纤

    公开(公告)号：US06671444B1

    公开(公告)日：2003-12-30

    申请号：US09763850

    申请日：2001-05-21

    Applicant: Shinichi Arai ,  Takeshi Yagi ,  Kunihiko Mori ,  Hidehiko Takara ,  Satoki Kawanishi

    Inventor： Shinichi Arai ,  Takeshi Yagi ,  Kunihiko Mori ,  Hidehiko Takara ,  Satoki Kawanishi

    IPC: G02B602

    CPC classification number: G02B6/02004 ,  G02B6/02242 ,  G02B6/03627 ,  G02B6/105 ,  G02F1/3555 ,  G02F1/365 ,  G02F2201/02 ,  G02F2203/06 ,  H01S3/302

    Abstract: An optical fiber, capable of generating by means of nonlinear phenomena, white light in adequately broadened wavelength bands at both sides of a pumping optical pulse that is input, and stabilizing the polarized conditions. The fiber is formed by covering a core with a first cladding, and covering the first cladding with a second cladding, where the second cladding has a refractive index greater than that of the first cladding, but lower than that of the core. Stress-applying parts are provided inside the second cladding so as to sandwich the core from both sides to form a polarization-maintaining optical fiber. The shortest distance between the stress-applying parts is made 2.3 times or more the mode field diameter for the wavelength of the pumping optical pulse.

    Abstract translation: 能够通过非线性现象产生的光纤，在输入的泵浦光脉冲的两侧上的白光充分变宽的波长带，并稳定极化条件。 纤维通过用第一包层覆盖芯并且用第二包层覆盖第一包层而形成，其中第二包层的折射率大于第一包层的折射率，但是低于芯的折射率。 应力施加部件设置在第二包层内部，以便从两侧夹住芯部以形成偏振保持光纤。 应力施加部之间的最短距离为泵浦光脉冲的波长的模场直径的2.3倍以上。

    Optical fiber, optical fiber component and optical transmission method
    87.
    发明申请
    Optical fiber, optical fiber component and optical transmission method 有权
    光纤，光纤部件和光传输方式

    公开(公告)号：US20030108318A1

    公开(公告)日：2003-06-12

    申请号：US10207020

    申请日：2002-07-30

    Inventor： Shinichi Arai ,  Naoto Oyama ,  Hirofumi Saito

    IPC: G02B006/22 ,  G02B006/16 ,  G02B006/18

    CPC classification number: G02B6/0365 ,  G02B6/02242 ,  G02B6/02247 ,  G02B6/02276 ,  G02B6/0286 ,  G02B6/03627 ,  G02B6/105 ,  G02F1/353 ,  G02F1/365 ,  G02F2201/02 ,  H01S3/0672 ,  H01S3/06729 ,  H01S3/06754 ,  H01S3/302

    Abstract: An optical fiber comprising a core and a cladding region which covers an outer periphery of the core, having a zero-dispersion wavelength in a wavelength range of 1.4 nullm to 1.65 nullm, and being in a single mode in that zero-dispersion wavelength, wherein GeO2 is doped in the core in a quantity such that a relative refractive index difference of the core becomes not less than 1.8%, the cladding region includes first, second, and third cladding regions, and a refractive index of the second cladding region is smaller than those of the first cladding region and the third cladding region.

    Abstract translation: 一种光纤，其包括芯和覆盖所述芯的外周的包层区域，其具有在1.4μm至1.65μm的波长范围内的零色散波长，并且处于零色散波长的单一模式，其中 GeO2以芯的相对折射率差成为1.8％以上的量掺杂在芯中，包层区域包括第一，第二和第三包层区域，第二包层区域的折射率变小 比第一包层区域和第三包层区域的区域。

    Optical modulator
    89.
    发明授权
    Optical modulator 有权

    公开(公告)号：US12032268B2

    公开(公告)日：2024-07-09

    申请号：US17168842

    申请日：2021-02-05

    Applicant: Fujitsu Optical Components Limited

    Inventor： Shinji Maruyama ,  Shuntaro Makino ,  Yoshimitsu Sakai ,  Yoshinobu Kubota

    IPC: G02F1/31

    CPC classification number: G02F1/31 ,  G02F2201/02 ,  G02F2202/20 ,  G02F2203/07

    Abstract: An optical modulator in which an optical signal is input from one side of a package, includes in the package, a chip that optically modulates the optical signal and in which an input waveguide and an output waveguide of the optical signal are led to mutually different destinations each being one end of the chip facing the one side of the package and a side surface of the chip orthogonal to the one end of the chip; an input optical system coupled to the input waveguide of the chip; and an output optical system coupled to the output waveguide of the chip.

    Optical voltage probe
    90.
    发明授权
    Optical voltage probe 有权

    公开(公告)号：US11994539B2

    公开(公告)日：2024-05-28

    申请号：US17770292

    申请日：2021-03-26

    Applicant: SEIKOH GIKEN Co., Ltd. ,  Rohm Co., Ltd.

    Inventor： Ryuji Osawa ,  Noriaki Hiraga

    IPC: G01R15/22 ,  G01R19/00 ,  G02F1/03 ,  G02F1/035 ,  G02F1/225

    CPC classification number: G01R15/22 ,  G01R19/0084 ,  G02F1/0327 ,  G02F1/035 ,  G02F1/2252 ,  G02F2201/02 ,  G02F2202/20

    Abstract: An optical voltage probe includes: an optical modulator 1 having two modulation electrodes 11 and 12, the optical modulator 1 being configured to modulate an intensity of an incident light depending on a voltage between the two modulation electrodes and output the incident light which is modulated; an input/output optical fiber 2 connected with the optical modulator 1; two contact terminal attachment portions 5, 6 to which contact terminals 3, 4 can be detachably attached and contacted, the two contact terminals 3, 4 being configured to be in contact with the points to be measured, the two contact terminal attachment portions 5, 6 being respectively connected with the modulation electrodes 11, 12; and a package 8 that houses the optical modulator 1 and a part of the input/output optical fiber 2. A voltage signal induced via the contact terminals 3, 4 is converted into an optical intensity modulation signal. When an electric wave having a measurement frequency is applied while the contact terminal attachment portions 5, 6 are opened, the package 8 exhibits a shielding effect of attenuating the electric wave by 15 dB or more compared to an output signal intensity measured without providing the package.

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