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19 条记录 (耗时 0.029 秒)

    Coherent Interleaved Polarization-Multiplexing Optical Communications with Single IQ Modulator
    2.
    发明申请
    Coherent Interleaved Polarization-Multiplexing Optical Communications with Single IQ Modulator 审中-公开
    具有单IQ调制器的相干交错极化复用光通信

    公开(公告)号：US20120321311A1

    公开(公告)日：2012-12-20

    申请号：US13523045

    申请日：2012-06-14

    申请人： Shaoliang Zhang ,  Fatih Yaman ,  Lei Xu ,  Ting Wang ,  Yoshihisa Inada ,  Takaaki Ogata ,  Yasuhiro Aoki

    发明人： Shaoliang Zhang ,  Fatih Yaman ,  Lei Xu ,  Ting Wang ,  Yoshihisa Inada ,  Takaaki Ogata ,  Yasuhiro Aoki

    IPC分类号： H04J14/06

    CPC分类号： H04B10/616 ,  H04B10/5051 ,  H04B10/532 ,  H04B10/5561 ,  H04J14/06

    摘要： An inventive method for coherent interleaved polarization-multiplexing PolMux optical communications with a single IQ modulator includes modulating a light source to generate a 50% return-to-zero RZ signal pulse at a frequency Rs, driving a single IQ modulator with inphase I and quadrature phase Q data at a bit rate of sais Rs to introduce phase modulation on said 50% RZ signal pulse to produce a QPSK pulse signal with all symbols being in a same polarization state without any time overlapping; and polarization modulating said QPSK signal to alternatively convert said QPSK signal into two orthogonal polarizations states enabling an interleaving PolMux signal with a symbol rate of Rs/2.

    摘要翻译： 用于具有单个IQ调制器的相干交错偏振复用PolMux光通信的创新方法包括调制光源以产生频率为Rs的50％归零RZ信号脉冲，以同相I和正交驱动单个IQ调制器 相位Q数据以sais的比特率在所述50％RZ信号脉冲上引入相位调制以产生QPSK脉冲信号，所有符号处于相同的极化状态，没有任何时间重叠; 以及对所述QPSK信号进行极化调制，以将所述QPSK信号交替地转换为使得能够以Rs / 2的符号率进行交织的PolMux信号的两个正交极化状态。

    Polarization-Alternating Optical Signal Generation using CSRZ Modulation
    4.
    发明申请
    Polarization-Alternating Optical Signal Generation using CSRZ Modulation 有权
    使用CSRZ调制的极化交替光信号生成

    公开(公告)号：US20120251028A1

    公开(公告)日：2012-10-04

    申请号：US13435775

    申请日：2012-03-30

    申请人： Fatih Yaman ,  Shaoliang Zhang ,  Lei Xu ,  Ting Wang ,  Yoshihisa Inada ,  Takaaki Ogata ,  Yasuhiro Aoki

    发明人： Fatih Yaman ,  Shaoliang Zhang ,  Lei Xu ,  Ting Wang ,  Yoshihisa Inada ,  Takaaki Ogata ,  Yasuhiro Aoki

    IPC分类号： G02F1/01

    CPC分类号： G02F1/01 ,  H04B10/5162 ,  H04B10/5165 ,  H04B10/532

    摘要： A method for optical chirp-free optical polarization modulation includes dividing a data modulated optical signal into a first optical path and a second optical path, using a Mach-Zehnder intensity modulator in the first optical path for imparting a π phase difference between adjacent symbols of the data modulated optical signal in the first optical path, adjusting a delay and amplitude of symbols of the data modulated optical signal in the second path so that the symbols in the first path and the symbols in the second path are synchronized and have substantially equal power levels, and combining the first and second optical paths so that symbols from the first and second optical paths are in orthogonal polarizations.

    摘要翻译： 一种用于无啁啾光学偏振调制的方法包括：使用第一光路中的马赫 - 曾德尔强度调制器将数据调制光信号划分成第一光路和第二光路， 在第一光路中的数据调制光信号的相邻符号之间的相位差，调整第二路径中的数据调制光信号的符号的延迟和幅度，使得第一路径中的符号和第二路径中的符号为 同步并且具有基本上相等的功率电平，并且组合第一和第二光路，使得来自第一和第二光路的符号处于正交偏振。

    Polarization-alternating optical signal generation using CSRZ modulation
    6.
    发明授权
    Polarization-alternating optical signal generation using CSRZ modulation 有权
    使用CSRZ调制的极化交替光信号生成

    公开(公告)号：US08787709B2

    公开(公告)日：2014-07-22

    申请号：US13435775

    申请日：2012-03-30

    申请人： Fatih Yaman ,  Shaoliang Zhang ,  Lei Xu ,  Ting Wang ,  Yoshihisa Inada ,  Takaaki Ogata ,  Yasuhiro Aoki

    发明人： Fatih Yaman ,  Shaoliang Zhang ,  Lei Xu ,  Ting Wang ,  Yoshihisa Inada ,  Takaaki Ogata ,  Yasuhiro Aoki

    IPC分类号： G02F1/035 ,  G02F1/01

    CPC分类号： G02F1/01 ,  H04B10/5162 ,  H04B10/5165 ,  H04B10/532

    摘要： A method for optical chirp-free optical polarization modulation includes dividing a data modulated optical signal into a first optical path and a second optical path, using a Mach-Zehnder intensity modulator in the first optical path for imparting a π phase difference between adjacent symbols of the data modulated optical signal in the first optical path, adjusting a delay and amplitude of symbols of the data modulated optical signal in the second path so that the symbols in the first path and the symbols in the second path are synchronized and have substantially equal power levels, and combining the first and second optical paths so that symbols from the first and second optical paths are in orthogonal polarizations.

    摘要翻译： 一种用于无啁啾光学偏振调制的方法包括：使用第一光路中的马赫 - 曾德尔强度调制器将数据调制光信号划分成第一光路和第二光路， 在第一光路中的数据调制光信号的相邻符号之间的相位差，调整第二路径中的数据调制光信号的符号的延迟和幅度，使得第一路径中的符号和第二路径中的符号为 同步并且具有基本上相等的功率电平，并且组合第一和第二光路，使得来自第一和第二光路的符号处于正交偏振。

    Optical surge preventing method and system for use with or in a rare earth doped fiber circuit
    7.
    发明授权
    Optical surge preventing method and system for use with or in a rare earth doped fiber circuit 失效
    用于或稀土掺杂光纤电路的防浪涌方法和系统

    公开(公告)号：US6064514A

    公开(公告)日：2000-05-16

    申请号：US740413

    申请日：1996-10-29

    申请人： Yasuhiro Aoki ,  Takaaki Ogata ,  Kenichi Yoneyama ,  Yukio Michishita ,  Yoshiro Sato

    发明人： Yasuhiro Aoki ,  Takaaki Ogata ,  Kenichi Yoneyama ,  Yukio Michishita ,  Yoshiro Sato

    IPC分类号： H01S3/10 ,  H01S3/13 ,  H01S3/00

    CPC分类号： H01S3/1301 ,  H01S3/10007 ,  H01S3/10015

    摘要： Optical surge preventing systems and methods for rare earth-doped optical fiber amplifiers are disclosed. The systems are so arranged as to cause any signal existing in a doped fiber section so as not to over excite the rare earth elements in the doped fiber section. In one embodiment, a background signal light with such a wavelength as to cause induced emission in the doped fiber section is always coupled into the doped fiber section regardless of whether a message signal light exists or not. The background signal light may be generated by any suitable light source or a light spontaneously emitted from either end of the doped fiber section. In another embodiment, a dummy signal light is coupled into the doped fiber section if the level of the message signal light becomes less than a predetermined value. Coupling of the background signal light or the dummy signal light into the doped fiber section may be done from either of the message signal input and output sides.

    摘要翻译： 公开了一种用于稀土掺杂光纤放大器的防浪涌系统和方法。 这些系统被布置成使得存在于掺杂光纤部分中的任何信号不会过度激发掺杂光纤部分中的稀土元素。 在一个实施例中，无论消息信号灯是否存在，具有在掺杂光纤部分中引起感应发射的波长的背景信号光总是耦合到掺杂光纤部分中。 背景信号光可以由任何合适的光源或从掺杂光纤部分的任一端自发发射的光产生。 在另一个实施例中，如果消息信号光的电平变得小于预定值，则虚拟信号光耦合到掺杂光纤部分中。 将背景信号光或虚拟信号光耦合到掺杂光纤部分可以从消息信号输入和输出侧中的任一个进行。

    Optical fuse
    8.
    发明授权
    Optical fuse 失效
    光保险丝

    公开(公告)号：US06218658B1

    公开(公告)日：2001-04-17

    申请号：US09271302

    申请日：1999-03-17

    申请人： Yasuhisa Taneda ,  Takaaki Ogata ,  Hirotoshi Nagata ,  Junichiro Ichikawa ,  Kaoru Higuma

    发明人： Yasuhisa Taneda ,  Takaaki Ogata ,  Hirotoshi Nagata ,  Junichiro Ichikawa ,  Kaoru Higuma

    IPC分类号： H01J4014

    CPC分类号： G02F1/3525 ,  G02B6/264 ,  G02B6/3845 ,  G02F1/35

    摘要： The optical fuse of the present invention comprises: at least one light heatable portion for receiving an incident beam, and at least one thermally sensitive degradable portion with transparency and reflectivity, positioned in contact with the light heatable portion. The light heatable portion contains a light heatable material which generates heat depending on a specified light intensity of the incident beam. The thermally sensitive degradable portion contains a thermally sensitive degradable material which loses or reduces its transparency and reflectivity, depending on the heat generated by the light heatable portion when the light intensity of the incident beam exceeds a threshold value.

    摘要翻译： 本发明的光熔丝包括：用于接收入射光束的至少一个光可加热部分和具有透明度和反射率的至少一个具有透光性和反射性的热敏可降解部分，与光可加热部分接触。 光可加热部分包含根据入射光束的规定光强度产生热量的轻质可加热材料。 热敏可降解部分包含热敏可降解材料，其当入射光束的光强度超过阈值时，根据由可热加热部分产生的热量而损失或降低其透明度和反射率。

    Light intensity attenuator and attenuating method
    9.
    发明授权
    Light intensity attenuator and attenuating method 失效
    光强衰减器和衰减方法

    公开(公告)号：US6134372A

    公开(公告)日：2000-10-17

    申请号：US319068

    申请日：1999-06-01

    申请人： Junichiro Ichikawa ,  Hirotoshi Nagata ,  Kaoru Higuma ,  Junichiro Minowa ,  Takaaki Ogata ,  Yasuhisa Taneda

    发明人： Junichiro Ichikawa ,  Hirotoshi Nagata ,  Kaoru Higuma ,  Junichiro Minowa ,  Takaaki Ogata ,  Yasuhisa Taneda

    IPC分类号： G02F1/01 ,  G02F1/35 ,  G02F1/365 ,  G02F1/37 ,  G02F1/377 ,  G02B6/122

    CPC分类号： G02F1/3511 ,  G02F1/365 ,  G02F1/0147 ,  G02F1/377 ,  G02F2001/374

    摘要： A light intensity attenuator and attenuating method is provided, by which a pulse-shaped optical surge can be attenuated and an optical signal component using desired light intensity can be output by using a simpler structural arrangement, and without using many optical components and circuits. In this method, an optical signal including a pulse-shaped optical surge component is received, and the optical signal is again output after the light intensity of the surge component is attenuated by a desired amount. Typically, (i) at least one of a substrate and an optical waveguide formed on the substrate is made of a material producing a nonlinear optical effect, and the refractive index of the optical waveguide with respect to the optical signal is smaller than the refractive index of the substrate with respect to a higher harmonic of the optical signal, thereby wavelength-converting a part of the input optical signal by the nonlinear optical effect into a light portion having a wavelength shorter than that of the optical signal, and scattering this converted portion, and (ii) a part of the optical signal is scattered by using a polar-molecule liquid including polar molecules.

    摘要翻译： PCT No.PCT / JP98 / 04346 Sec。 371日期1999年6月1日 102（e）1999年6月1日PCT PCT 1998年9月20日PCT公布。 公开号WO99 /​​ 17472 日期1999年4月8日提供了一种光强度衰减器和衰减方法，通过该光强度衰减器和衰减方法可以衰减脉冲形波浪，并且可以通过使用更简单的结构布置输出使用期望光强的光信号分量，并且不使用许多光 组件和电路。 在该方法中，接收包括脉冲状波浪分量的光信号，并且在浪涌元件的光强度衰减期望量之后再次输出光信号。 通常，（i）形成在基板上的基板和光波导中的至少一个由产生非线性光学效应的材料制成，光波导相对于光信号的折射率小于折射率 相对于光信号的高次谐波而使输入光信号的一部分通过非线性光学效应波长转换为波长短于光信号的波长的光部分，并将该转换部分散射 ，和（ii）通过使用包含极性分子的极性分子液体来散射光信号的一部分。

    Variable wavelength optical filter
    10.
    发明授权
    Variable wavelength optical filter 失效
    可变波长光学滤波器

    公开(公告)号：US5781332A

    公开(公告)日：1998-07-14

    申请号：US707526

    申请日：1996-09-04

    申请人： Takaaki Ogata

    发明人： Takaaki Ogata

    IPC分类号： G02B26/00 ,  G02B5/28 ,  G02B6/34 ,  G02F1/33

    CPC分类号： G02B6/2937 ,  G02B5/284 ,  G02B6/29395 ,  G02B6/4246 ,  G01J2003/1221 ,  G01J2003/1243 ,  G01J2003/1247

    摘要： In a variable wavelength optical filter, a lens (3) is positioned at the output end of a first optical fiber (1) and transforms an input optical signal to parallel light. A dielectric interference optical filter (8) is located at the rear of the lens (3) in order to transmit only the light of particular wavelength. A lens (4) converges the light output from the filter (8) into the input end of a second optical fiber (2). A rotary plate (7) is affixed to the output shaft (6) of a servo motor (5) whose rotation angle is controlled by an electric signal fed from the outside of the filter. The filter (8) is mounted on the rotary plate (7) with the intermediary of a piezoelectric element or elements (9). The piezoelectric elements (9) are caused to oscillate by a modulating signal, so that the transmission center wavelength of the filter is varied. The resulting deviation of the transmission center frequency is detected.

    摘要翻译： 在可变波长光学滤波器中，透镜（3）位于第一光纤（1）的输出端，并将输入光信号转换为平行光。 介质干涉光学滤光器（8）位于透镜（3）的后部，以仅透射特定波长的光。 透镜（4）将来自滤光器（8）的光输出会聚到第二光纤（2）的输入端。 旋转板（7）固定在伺服电动机（5）的输出轴（6）上，其旋转角度由从过滤器外部供给的电信号控制。 过滤器（8）以压电元件（9）为中心安装在旋转板（7）上。 使压电元件（9）通过调制信号振荡，使得滤波器的透射中心波长变化。 检测到传输中心频率的偏差。