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    Optical receiver
    1.
    发明公开
    Optical receiver 审中-公开
    光接收器

    公开(公告)号：EP1128593A3

    公开(公告)日：2006-06-14

    申请号：EP00119062.8

    申请日：2000-09-01

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Shimomura, Kenkichi ,  Shimizu, Katsuhiro

    IPC分类号： H04L7/00 ,  H04J14/02

    CPC分类号： H04L7/0075 ,  H04B10/299 ,  H04J14/02 ,  H04J14/08

    摘要： Because the phase comparison of the light signal data row and the light clock signal, and the coding of the light signal by the light signal, are simultaneously conducted, the influence of the phase variation in the signal path is not affected in principle, and the optimum phase condition is automatically established/maintained, and thereby, the present invention operates as an all-light type light receiver by which the light data and light clock are reproduced. Further, because the electric signal used herein exists in the range from the DC to the frequency of the difference between the light signal data row and the light clock signal, problems peculiar to the high speed electric signal can be avoided.

    Multi-value modulation apparatus
    2.
    发明公开
    Multi-value modulation apparatus 有权
    Vorrichtung zur mehrwertigen调制

    公开(公告)号：EP1257078A3

    公开(公告)日：2005-12-21

    申请号：EP01123717.9

    申请日：2001-10-04

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Shimizu, Katsuhiro ,  Ishida, Kazuyuki ,  Kobayashi, Yukio

    IPC分类号： H04J14/02

    CPC分类号： H04J14/02 ,  H04B10/504 ,  H04B10/541

    摘要： In the multi-value modulation apparatus, one optical intensity detecting unit (13) detects optical intensity of a modulation optical signal generated by one optical modulation signal generating unit (10) and output from the variable optical attenuator (12). The detected optical intensity is provided to the comparator (16). Another optical intensity detecting unit (14) detects optical intensity of a modulation optical signal output from another optical modulation signal generating unit (11). The attenuator (15) attenuates the optical intensity detected by the another optical intensity detecting unit (14), and provides it to the comparator (16). The output of the comparator is provided to the optical variable attenuator as a control signal. The variable optical attenuator (12) controls optical intensity of the modulation optical signal based on the control signal.

    摘要翻译： 在多值调制装置中，一个光强度检测单元（13）检测由一个光调制信号生成单元（10）生成并从可变光衰减器（12）输出的调制光信号的光强度。 检测到的光强度被提供给比较器（16）。 另一个光强检测单元（14）检测从另一光调制信号产生单元（11）输出的调制光信号的光强度。 衰减器（15）衰减由另一个光强度检测单元（14）检测的光强度，并将其提供给比较器（16）。 将比较器的输出作为控制信号提供给光可变衰减器。 可变光衰减器（12）基于控制信号控制调制光信号的光强度。

    Optical transmission apparatus, and output stabilization control method for an optical modulator used in the optical transmission apparatus
    5.
    发明公开
    Optical transmission apparatus, and output stabilization control method for an optical modulator used in the optical transmission apparatus 审中-公开
    用于控制的光传输装置中使用的光调制器的输出功率的光传输装置和稳定化处理

    公开(公告)号：EP1168039A2

    公开(公告)日：2002-01-02

    申请号：EP01113353.5

    申请日：2001-06-01

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Ishida, Kazuyuki ,  Shimizu, Katsuhiro ,  Kobayashi, Yukio

    IPC分类号： G02F1/03 ,  G02F1/21 ,  H04B10/155

    CPC分类号： H04B10/50575 ,  G02F1/0123 ,  G02F2001/212 ,  H04B10/505 ,  H04B10/508 ,  H04B10/58

    摘要： The optical transmission apparatus has an optical modulator (2) of Mach-Zehnder type, a light source (1) which supplies an optical signal to the optical modulator (2), a branching filter (3) for taking out a part of an output optical signal, an optical spectrum monitor (4) for monitoring an optical spectrum of an output optical signal taken out, an error signal generator circuit (11) for generating an error signal that shows a bias voltage error based on a result of this monitoring, and a bias voltage control circuit (5) for applying a bias voltage added with this error signal to the optical modulator (2).

    摘要翻译： 该光传输装置具有光调制器（2）Mach-Zehnder型，光源的（1）供给到光信号到光调制器（2），分波器（3），用于取出输出的一部分 光信号到光频谱监视器（4），用于取出输出光信号的光谱的监测，一个误差信号发生器电路（11），用于在误差信号产生没有示出了基于该监视的结果的偏置电压误差， 以及用于将与该误差信号加到光调制器的偏置电压的偏置电压控制电路（5）（2）。

    Optical frequency doubling device and bias control method for such a device
    7.
    发明公开
    Optical frequency doubling device and bias control method for such a device 有权
    Venspannungssteuerung eines optischen Mach-Zehnder调音器在einem optischen发信人

    公开(公告)号：EP1168038A2

    公开(公告)日：2002-01-02

    申请号：EP01110217.5

    申请日：2001-04-25

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Kobayashi, Tatsuya ,  Ishida, Kazuyuki ,  Shimizu, Katsuhiro ,  Kobayashi, Yukio

    IPC分类号： G02F1/03

    CPC分类号： G02F1/0123 ,  G02F1/225 ,  G02F2001/212 ,  G02F2203/21

    摘要： The optical transmitter comprises a light source (2) which inputs continuous optical signal and a driving circuit (4) which inputs driving signal to an optical modulator (3) of Mach-Zehnder type. A photo coupler separates (5) a part of the output of the optical modulator (3). A photo diode (6) converts this part into electric signal. A band-pass filter (7) and a pre-amplifier (8) extract a frequency component of the driving signal contained in the electric signal. A mixer (9) conducts synchronous detection between the driving signal and the extracted frequency component. Finally, a bias voltage control circuit (12) controls a bias voltage based on a result of the phase comparison.

    摘要翻译： 光发射机包括输入连续光信号的光源（2）和向Mach-Zehnder型光调制器（3）输入驱动信号的驱动电路（4）。 光耦合器分离（5）光调制器（3）的一部分输出。 光电二极管（6）将该部分转换为电信号。 带通滤波器（7）和前置放大器（8）提取包含在电信号中的驱动信号的频率分量。 混频器（9）在驱动信号和提取的频率分量之间进行同步检测。 最后，偏置电压控制电路（12）基于相位比较的结果来控制偏置电压。

    Optical receiver
    8.
    发明公开
    Optical receiver 审中-公开
    OptischerEmpfänger

    公开(公告)号：EP1128593A2

    公开(公告)日：2001-08-29

    申请号：EP00119062.8

    申请日：2000-09-01

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Shimomura, Kenkichi ,  Shimizu, Katsuhiro

    IPC分类号： H04L7/00 ,  H04J14/02

    CPC分类号： H04L7/0075 ,  H04B10/299 ,  H04J14/02 ,  H04J14/08

    摘要： Because the phase comparison of the light signal data row and the light clock signal, and the coding of the light signal by the light signal, are simultaneously conducted, the influence of the phase variation in the signal path is not affected in principle, and the optimum phase condition is automatically established/maintained, and thereby, the present invention operates as an all-light type light receiver by which the light data and light clock are reproduced. Further, because the electric signal used herein exists in the range from the DC to the frequency of the difference between the light signal data row and the light clock signal, problems peculiar to the high speed electric signal can be avoided.

    摘要翻译： 由于光信号数据行与光时钟信号的相位比较和光信号的光信号的编码同时进行，信号路径的相位变化的影响原则上不受影响， 自动建立/维持最佳相位状态，从而本发明作为再现光数据和光时钟的全光型光接收器工作。 此外，由于这里使用的电信号存在于从光信号数据行和光时钟信号之间的差的DC到频率的范围内，所以可以避免高速电信号特有的问题。