Optical demultiplexer
    61.
    发明授权
    Optical demultiplexer 失效
    光解复用器

    公开(公告)号:US5760937A

    公开(公告)日:1998-06-02

    申请号:US784441

    申请日:1997-01-16

    摘要: An optical demultiplexer comprises a clock regenerating circuit for regenerating a clock signal for each optical signal channel from an optical multiplexed signal. An optical switch separates each optical signal channel from the optical multiplexed signal in accordance with the clock signal regenerated by the clock regenerating circuit. An identification information extraction circuit extracts identification information contained in each optical signal channel separated by the optical switch. A control circuit changes output destinations so that each optical signal channel is output to a designated destination in accordance with the identification information extracted by the identification information extraction circuit. The identification information is appended as identification data to a data signal represented by the optical signal, and the identification information extraction circuit extracts the identification data contained in the data signal reconstructed from each optical signal channel. A signal switching circuit is provided between outputs of the optical switch and output destinations, wherein the control circuit changes output destinations by changing connection relationships in the signal switching circuit between the outputs of the optical switch and the output destinations, for example, by changing the phase of the clock signal supplied to the optical switch.

    摘要翻译: 光解复用器包括时钟再生电路,用于从光复用信号再生每个光信号通道的时钟信号。 根据由时钟再生电路再生的时钟信号,光开关将光信号通道与光复用信号分开。 识别信息提取电路提取由光开关分离的每个光信号通道中包含的识别信息。 控制电路改变输出目的地,使得根据由识别信息提取电路提取的识别信息将每个光信号信道输出到指定的目的地。 识别信息作为识别数据附加到由光信号表示的数据信号,并且识别信息提取电路提取包含在从每个光信号信道重建的数据信号中的识别数据。 信号切换电路设置在光开关和输出目的地的输出之间,其中控制电路通过改变光开关输出与输出目的地之间的信号切换电路中的连接关系来改变输出目的地,例如通过改变 提供给光开关的时钟信号的相位。

    Optical control device and method for making the same
    62.
    发明授权
    Optical control device and method for making the same 失效
    光控装置及其制作方法

    公开(公告)号:US5687265A

    公开(公告)日:1997-11-11

    申请号:US535477

    申请日:1995-09-27

    摘要: Disclosed is an optical control device which has a LiNbO3 or LiTaO3 crystalline substrate having electrooptic effect; a channel-type optical waveguide which is formed in the crystalline substrate by doping metal; an optically transparent film layer formed on the crystalline substrate; and electrodes formed on the optically transparent film layer; wherein the crystalline substrate has a surface except a region which waveguided-light through the channel-type optical waveguide propagates or an entire surface under which a layer doped by metal is formed.

    摘要翻译: 公开了具有具有电光效应的LiNbO 3或LiTaO 3晶体基板的光学控制装置; 通过掺杂金属在晶体衬底中形成的沟道型光波导; 形成在所述结晶基板上的光学透明膜层; 和形成在光学透明膜层上的电极; 其中所述晶体衬底具有除了通过所述沟道型光波导传播的波导光的区域或者形成由金属掺杂的层的整个表面之外的表面。

    Supervisory and control signal transmitting system for use in optically
amplifying repeaters system
    63.
    发明授权
    Supervisory and control signal transmitting system for use in optically amplifying repeaters system 失效
    用于光学放大中继器系统的监控信号传输系统

    公开(公告)号:US5383046A

    公开(公告)日:1995-01-17

    申请号:US74021

    申请日:1993-06-01

    摘要: A supervisory and control signal transmitting system for use in an optically amplifying repeater system amplifies attenuated light and for transmitting data over a long distance between a transmitting station and a receiving station through a plurality of repeaters. The supervisory and control signal transmitting system comprises a sub signal superimposing portion for superimposing both a sub signal with a carrier frequency modulated by a supervisory and control signal and a modulation factor stabilizing signal with a different frequency thereof on an optical main signal modulated corresponding to transmission data, a transmitter sub signal superimposing portion for monitoring the output of the sub signal superimposing portion and for controlling the sub signal superimposing portion so as to stabilize the modulation factor of the sub signal to be superimposed, a modulating portion for receiving the output of the transmitter sub signal superimposing portion, and a stabilizing signal erasing portion for monitoring the output of the modulating portion, for extracting the frequency component of the modulation factor stabilizing signal, and for driving the modulating portion so as to erase the stabilizing signal from the output of the modulating portion.

    摘要翻译: 用于光放大中继器系统的监控和控制信号发射系统通过多个中继器放大衰减光并通过发射站和接收站之间的长距离发射数据。 监控信号发送系统包括子信号叠加部分,用于将子信号与由监控信号调制的载波频率和具有不同频率的调制因数稳定信号叠加在对应于传输的光主信号上 数据,发送子信号叠加部分,用于监视子信号叠加部分的输出并用于控制副信号叠加部分,以便稳定要叠加的子信号的调制因数;调制部分,用于接收 发射机子信号叠加部分和稳定信号擦除部分,用于监视调制部分的输出,用于提取调制因子稳定信号的频率分量,并用于驱动调制部分,以从 调制方式 n。

    Optical transmitter
    64.
    发明授权
    Optical transmitter 失效
    光发射机

    公开(公告)号:US5317443A

    公开(公告)日:1994-05-31

    申请号:US799158

    申请日:1991-11-27

    申请人: Hiroshi Nishimoto

    发明人: Hiroshi Nishimoto

    摘要: An optical transmitter operates on the DPSH-IM (direct phase-shift and self-homodyne intensity modulation) principle. The optical transmitter slightly amplitude-modulates the modulation current of a laser diode using a low frequency signal and detects the modulated component from the optical output. These features stabilize the operating point and improve the transmission waveform.

    摘要翻译: 光发射机以DPSH-IM(直接相移和自归零强度调制)原理工作。 光发射机使用低频信号稍微调制激光二极管的调制电流,并从光输出检测调制分量。 这些特性稳定了工作点,并改善了传输波形。

    Optical waveguide control device employing directional coupler on
substrate
    67.
    发明授权
    Optical waveguide control device employing directional coupler on substrate 失效
    在基板上采用定向耦合器的光波导控制装置

    公开(公告)号:US5050947A

    公开(公告)日:1991-09-24

    申请号:US555014

    申请日:1990-07-20

    IPC分类号: G02F1/313

    CPC分类号: G02F1/3132

    摘要: An optical control device comprises optical waveguides provided on a substrate having an electrooptic effect, a buffer layer provided on the substrate to cover the optical waveguides, and control electrodes provided on the buffer layer for applying a predetermined voltage across the optical waveguides. The optical waveguides has a coupling portion, at which an interval of the optical waveguides is narrowed. In this optical control device, a distortion dispersing structure is provided in the vicinity of the control electrodes to disperse distortion locally accumulated in the vicinity of the control electrodes to the whole area of the substrate uniformly.