利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

52 条记录 (耗时 0.053 秒)

    Optical reception apparatus compatible with DQPSK polarization multiplexing format
    4.
    发明授权
    Optical reception apparatus compatible with DQPSK polarization multiplexing format 失效
    光接收装置兼容DQPSK偏振复用格式

    公开(公告)号：US07689074B2

    公开(公告)日：2010-03-30

    申请号：US12232607

    申请日：2008-09-19

    申请人： Akihiko Isomura ,  Jens Rasmussen

    发明人： Akihiko Isomura ,  Jens Rasmussen

    IPC分类号： G02B6/28

    CPC分类号： H04J14/06 ,  G02F2001/212 ,  G02F2203/21 ,  H04B10/677

    摘要： In the optical reception apparatus, a DQPSK polarization multiplexed signal light (S) input thereto is split into horizontally/vertically polarized signal lights (SH, SV) by a polarization beam splitter (3), and the signal lights (SH, SV) each is branched into two by each of optical couplers (4H, 4V). Then, one branched lights (SH1, SV1) by each of the optical couplers (4H, 4V) are supplied to a delay interferometer (5I) on the I branch via optical circulators (10I1, 10I2) to be propagated in bidirectional, and the other branched lights (SHQ, SVQ) by each of the optical couplers (4H, 4V) are supplied to a delay interferometer (5Q) on the Q branch side via optical circulators (10Q1, 10Q2) to be propagated in bidirectional, so that a set of delay interferometers (5I, 5Q) is commonly used for horizontally polarized waves and vertically polarized waves.

    摘要翻译： 在光接收装置中，通过偏振分束器（3）将输入的DQPSK偏振复用信号光（S）分离为水平/垂直偏振信号光（SH，SV），各信号光（SH，SV）分别 由光耦合器（4H，4V）分支成两个。 然后，每个光耦合器（4H，4V）的一个分支光（SH1，SV1）经由光循环器（10I1,10I2）被提供给I分支上的延迟干涉仪（5I）以被双向传播，并且 通过光耦合器（4H，4V）中的每一个的其他分支光（SHQ，SVQ）经由光循环器（10Q1,10Q2）被提供给Q分支侧的延迟干涉仪（5Q），以被双向传播， 一组延迟干涉仪（5I，5Q）通常用于水平极化波和垂直极化波。

    Phase control apparatus and optical DQPSK receiver
    5.
    发明授权
    Phase control apparatus and optical DQPSK receiver 失效
    相位控制装置和光DQPSK接收机

    公开(公告)号：US07684713B2

    公开(公告)日：2010-03-23

    申请号：US11593591

    申请日：2006-11-07

    申请人： Yoshikazu Terayama ,  Noriaki Mizuguchi ,  Eiji Ishikawa ,  Takashi Toyomaki ,  Kenichi Kaburagi ,  Takeshi Hoshida ,  Jens Rasmussen ,  Akihiko Isomura

    发明人： Yoshikazu Terayama ,  Noriaki Mizuguchi ,  Eiji Ishikawa ,  Takashi Toyomaki ,  Kenichi Kaburagi ,  Takeshi Hoshida ,  Jens Rasmussen ,  Akihiko Isomura

    IPC分类号： H04B10/00

    CPC分类号： H04B10/66

    摘要： A calculation processing unit controls temperature of a Peltier device based on a slope of a waveform obtained by subtracting a waveform of a B-arm monitoring signal from a waveform of an A-arm monitoring signal and a value obtained by subtracting a value B of the B-arm monitoring signal from a value A of the A-arm monitoring signal. Similarly, the calculation processing unit controls a phase of the A-arm and a phase of the B-arm. An A-arm side micro-controller controls temperature of an A-arm side heater 22 based on the value of the A-arm monitoring signal, and controls the phase of the A-arm. A B-arm side micro-controller controls temperature of a B-arm side heater based on the value B of the B-arm monitoring signal, and controls the phase of the B-arm.

    摘要翻译： 计算处理单元基于通过从A臂监视信号的波形中减去B臂监视信号的波形而获得的波形的斜率，以及通过从A臂监视信号的波形中减去B的值得到的值来控制珀耳帖装置的温度 B臂监控信号从A臂A值监控信号。 类似地，计算处理单元控制A臂的相位和B臂的相位。 A臂侧微型控制器基于A臂监视信号的值来控制A臂侧加热器22的温度，并且控制A臂的相位。 B臂侧微控制器基于B臂监控信号的值B控制B臂侧加热器的温度，并控制B臂的相位。

    Optical signal processing apparatus, optical signal transmission system and optical signal processing method
    6.
    发明申请
    Optical signal processing apparatus, optical signal transmission system and optical signal processing method 有权
    光信号处理装置，光信号传输系统和光信号处理方法

    公开(公告)号：US20080107425A1

    公开(公告)日：2008-05-08

    申请号：US11892303

    申请日：2007-08-21

    申请人： Jens Rasmussen ,  Akihiko Isomura

    发明人： Jens Rasmussen ,  Akihiko Isomura

    IPC分类号： H04B10/02

    CPC分类号： H04B10/532 ,  H04B10/2569

    摘要： Influence of polarization mode dispersion, occurring in an optical fiber is mitigated by means of polarization scrambling, differential group delay which a received optical signal has is optically suppressed; the optical signal in which differential group delay is thus suppressed is converted into an electric signal; and error correcting processing is carried out on the electric signal obtained, a jitter amplitude in the received optical signal is suppressed, influence of which to a jitter tolerance increases due to increase in speed of the polarization scrambling.

    摘要翻译： 光纤中出现的偏振模色散的影响通过偏振加扰，受光信号具有光学抑制的差分组延迟得到缓解; 因此抑制差分组延迟的光信号被转换成电信号; 并且对所获得的电信号进行纠错处理，抑制接收的光信号中的抖动幅度，由于偏振加扰的速度的增加，其对抖动容限的影响增加。

    Optical transmitter
    7.
    发明申请
    Optical transmitter 有权
    光发射机

    公开(公告)号：US20070014513A1

    公开(公告)日：2007-01-18

    申请号：US11340530

    申请日：2006-01-27

    申请人： Akihiko Isomura ,  Jens Rasmussen

    发明人： Akihiko Isomura ,  Jens Rasmussen

    IPC分类号： G02B6/28

    CPC分类号： H04J14/0221 ,  H04B10/25073 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213

    摘要： A wavelength-division multiplexing transmitter that is capable of enhancing its ability to compensate for a difference in light intensity between wavelengths. The wavelength-division multiplexing transmitter includes an optical branching part for branching a wavelength-division multiplexed input optical signal into a plurality of optical signals, a plurality of wavelength-selective devices for selecting as output wavelengths the wavelengths of each of the optical signals branched by the optical branching part, and an optical coupling part for coupling the output wavelengths respectively output from the plurality of wavelength-selective devices. At least either the branching in the optical branching part or the coupling in the optical coupling part is performed at a power ratio M:N where M and N differ from each other.

    摘要翻译： 一种波分复用发射机，其能够增强其补偿波长之间光强差异的能力。 波分复用发射机包括：用于将波分复用输入光信号分支为多个光信号的光分支部分;多个波长选择装置，用于选择作为输出波长的光信号分支的波长 光分支部分和用于耦合从多个波长选择装置分别输出的输出波长的光耦合部分。 光分路部分的分支或光耦合部分的耦合中的至少一个以M和N的功率比M：N进行，其中M和N彼此不同。

    Optical transmitter
    8.
    发明授权
    Optical transmitter 有权

    公开(公告)号：US07277608B2

    公开(公告)日：2007-10-02

    申请号：US11340530

    申请日：2006-01-27

    申请人： Akihiko Isomura ,  Jens Rasmussen

    发明人： Akihiko Isomura ,  Jens Rasmussen

    IPC分类号： G02B6/28

    CPC分类号： H04J14/0221 ,  H04B10/25073 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213

    摘要： A wavelength-division multiplexing transmitter that is capable of enhancing its ability to compensate for a difference in light intensity between wavelengths. The wavelength-division multiplexing transmitter includes an optical branching part for branching a wavelength-division multiplexed input optical signal into a plurality of optical signals, a plurality of wavelength-selective devices for selecting as output wavelengths the wavelengths of each of the optical signals branched by the optical branching part, and an optical coupling part for coupling the output wavelengths respectively output from the plurality of wavelength-selective devices. At least either the branching in the optical branching part or the coupling in the optical coupling part is performed at a power ratio M:N where M and N differ from each other.

    Polarization mode dispersion compensation apparatus and method thereof in light wavelength division multiplexing transmission system
    10.
    发明申请
    Polarization mode dispersion compensation apparatus and method thereof in light wavelength division multiplexing transmission system 审中-公开
    光波分复用传输系统中的偏振模色散补偿装置及其方法

    公开(公告)号：US20060013592A1

    公开(公告)日：2006-01-19

    申请号：US11008110

    申请日：2004-12-10

    申请人： Akihiko Isomura ,  Jens Rasmussen ,  Teruhiro Kubo

    发明人： Akihiko Isomura ,  Jens Rasmussen ,  Teruhiro Kubo

    IPC分类号： H04B10/00

    CPC分类号： H04B10/2569 ,  G02B6/278 ,  H04J14/02

    摘要： A signal for each wavelength is extracted from multiplexed light signals that are wavelength-multiplexed and transmitted, and an evaluation value showing a degree of signal deterioration caused by polarization mode dispersion for each wavelength is measured. Then, the wavelength of a target of the polarization mode dispersion compensation is selected based on the evaluation value and the polarization mode dispersion compensation is implemented for only the light signal of the selected wavelength.

    摘要翻译： 从经波分复用和发送的复用光信号中提取每个波长的信号，并且测量示出由每个波长的偏振模色散导致的信号劣化程度的评估值。 然后，基于评估值选择偏振模色散补偿的目标的波长，并且仅对所选波长的光信号实现偏振模色散补偿。