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50 条记录 (耗时 0.029 秒)

    Optical sending apparatus and channel extension method
    14.
    发明授权
    Optical sending apparatus and channel extension method 失效
    光发送装置和信道扩展方法

    公开(公告)号：US06738181B1

    公开(公告)日：2004-05-18

    申请号：US09650856

    申请日：2000-08-29

    申请人： Hiroshi Nakamoto ,  Takao Naito ,  Terumi Chikama

    发明人： Hiroshi Nakamoto ,  Takao Naito ,  Terumi Chikama

    IPC分类号： H04B1012

    CPC分类号： H04B10/2525 ,  G02B6/2713 ,  G02B6/276 ,  G02B6/29376 ,  H04B10/506 ,  H04B2210/254

    摘要： An optical sending apparatus of this invention includes a plurality of optical signal generating sections, a dispersion compensating section and a wavelength multiplexing section. The dispersion compensating section performs compensation with a predetermined chromatic dispersion value to at least one of polarized light generated by the optical signal generating sections while a predetermined state of polarized light is maintained. The wavelength multiplexing section combines output light outputted from the optical signal generating section with output light passing through the dispersion compensating section so that the polarized light of adjacent wavelengths crosses orthogonal to each other. The optical sending apparatus having such a construction can generate high-density WDM optical signals, the dispersion of which is compensated in advance, by a polarization crossing method.

    摘要翻译： 本发明的光发送装置包括多个光信号产生部分，色散补偿部分和波长复用部分。 色散补偿部在保持预定的偏振光状态的同时，对由光信号产生部产生的偏振光中的至少一个进行预定的色散值的补偿。 波长复用部将从光信号生成部输出的输出光与通过色散补偿部的输出光组合，使得相邻波长的偏振光彼此正交交叉。 具有这种结构的光发送装置可以通过偏振交叉方法产生高分散的WDM光信号，其偏差被预先补偿。

    Optical amplifier for use in optical communications equipment
    15.
    发明授权
    Optical amplifier for use in optical communications equipment 失效
    用于光通信设备的光放大器

    公开(公告)号：US06373623B1

    公开(公告)日：2002-04-16

    申请号：US09677759

    申请日：2000-10-03

    申请人： Chihiro Ohshima ,  Susumu Kinoshita ,  Terumi Chikama

    发明人： Chihiro Ohshima ,  Susumu Kinoshita ,  Terumi Chikama

    IPC分类号： H01S300

    CPC分类号： H01S3/06704 ,  G02F1/093 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/09408 ,  H01S5/40

    摘要： The output level of pumping light supplied from a pumping light source is varied using a variable attenuator, which is controlled by a variable attenuator driver circuit. By separating a portion containing the pumping light source from a portion containing an amplification medium, it becomes possible to prevent heat emitted by the pumping light source from adversely affecting the amplification medium. By arranging the portion containing the pumping light source such that a pumping light source or sources can be added when necessary, optical transmission system requirements of having more pumping light sources for system upgrade can be accommodated readily. By packaging portions containing amplification media, an optical amplifier can be made small.

    摘要翻译： 从泵浦光源提供的泵浦光的输出电平使用由可变衰减器驱动电路控制的可变衰减器来改变。 通过从包含放大介质的部分分离含有泵浦光源的部分，可以防止由泵浦光源发出的热量对放大介质产生不利影响。 通过布置包含泵浦光源的部分，使得在必要时可以添加泵浦光源或源，可容易地适应具有用于系统升级的更多泵浦光源的光传输系统要求。 通过封装包含放大介质的部分，可以使光放大器变小。

    Optical amplifier for use in optical communications equipment
    16.
    发明授权
    Optical amplifier for use in optical communications equipment 失效

    公开(公告)号：US06335823B2

    公开(公告)日：2002-01-01

    申请号：US09769532

    申请日：2001-01-26

    申请人： Chihiro Ohshima ,  Susumu Kinoshita ,  Terumi Chikama

    发明人： Chihiro Ohshima ,  Susumu Kinoshita ,  Terumi Chikama

    IPC分类号： H01S301

    CPC分类号： H01S3/094003 ,  H01S3/06704 ,  H01S3/09408

    摘要： The output level of pumping light supplied from a pumping light source is varied using a variable attenuator, which is controlled by a variable attenuator driver circuit. By separating a portion containing the pumping light source from a portion containing an amplification medium, it becomes possible to prevent heat emitted by the pumping light source from adversely affecting the amplification medium. By arranging the portion containing the pumping light source such that a pumping light source or sources can be added when necessary, optical transmission system requirements of having more pumping light sources for system upgrade can be accommodated readily. By packaging portions containing amplification media, an optical amplifier can be made small.

    Optical transmission device for bi-directional optical communication
    17.
    发明授权
    Optical transmission device for bi-directional optical communication 失效
    用于双向光通信的光传输设备

    公开(公告)号：US06278536B1

    公开(公告)日：2001-08-21

    申请号：US09044127

    申请日：1998-03-19

    申请人： Yutaka Kai ,  Terumi Chikama

    发明人： Yutaka Kai ,  Terumi Chikama

    IPC分类号： H04J1402

    CPC分类号： H04J14/0291 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0216 ,  H04J14/0221 ,  H04J14/0283

    摘要： This invention discloses an optical transmission device used for bi-directional optical communications. The optical transmission device comprises a uni-directional optical signal processing unit for performing specified optical signal processing for optical signals transmitted in a single direction and a uni-direction/bi-direction changing unit for unifying the flows of clockwise and counterclockwise optical signals in a single direction, inputting these flow-unified optical signals to the uni-directional optical signal processing unit and dividing the flow of optical signals from the uni-directional optical signal processing unit between clockwise and counterclockwise directions. Bi-directional wavelength-division multiplexing optical communications can be performed by unifying the transmission routes (flows) of optical signals transmitted in two ways in a single direction and using the existing optical transmission device for uni-directional optical communications.

    摘要翻译： 本发明公开了一种用于双向光通信的光传输设备。 光传输装置包括：单向光信号处理单元，用于对单向传输的光信号进行特定的光信号处理;以及单向/双向改变单元，用于将顺时针和逆时针光信号的流量统一在 将这些流统一的光信号输入到单向光信号处理单元，并将来自单向光信号处理单元的光信号的流在顺时针和逆时针方向上分开。 双向波分复用光通信可以通过使用现有的用于单向光通信的光传输装置统一单向传输的光信号的传输路由（流）。

    Optical amplifying apparatus
    18.
    发明授权
    Optical amplifying apparatus 失效
    光放大装置

    公开(公告)号：US06178037B1

    公开(公告)日：2001-01-23

    申请号：US09028825

    申请日：1998-02-24

    申请人： Yasushi Sugaya ,  Susumu Kinoshita ,  Hiroshi Onaka ,  Terumi Chikama

    发明人： Yasushi Sugaya ,  Susumu Kinoshita ,  Hiroshi Onaka ,  Terumi Chikama

    IPC分类号： H01S300

    CPC分类号： H01S3/1301 ,  H01S5/0617 ,  H01S5/06808 ,  H01S5/0683 ,  H01S5/50

    摘要： A computer-controlled optical amplifying apparatus, which includes an optical amplifying unit including an optical amplifying medium and an optical amplifying control unit controlling the optical amplifying unit under the control of a computer. This optical amplifying control unit is constituted by a status monitoring unit for monitoring the status, an optical output control unit for controlling the optical amplifying unit in accordance with the result of monitoring of status; and a status restoring unit for initializing the control status of the optical output control unit by initializing the computer when detecting an occurrence of the abnormal status by the result of monitoring of status and restoring the optical output control unit to the control status before occurrence of the related abnormal status within a relaxation time inherent in the optical amplifying medium occurring accompanied with this initialization.

    摘要翻译： 一种计算机控制的光学放大装置，其包括具有光放大介质的光放大单元和在计算机的控制下控制光放大单元的光放大控制单元。 该光放大控制单元由用于监视状态的状态监视单元，根据状态监视结果控制光放大单元的光输出控制单元构成; 以及状态恢复单元，用于通过初始化计算机的初始化来初始化光输出控制单元的控制状态，该状态恢复单元通过状态监视的结果检测到异常状态的发生，并且在发生之前将光输出控制单元恢复到控制状态 在与该初始化相关的光放大介质中固有的弛豫时间内的相关异常状态。

    Dual balanced optical signal receiver
    19.
    发明授权
    Dual balanced optical signal receiver 失效
    双平衡光信号接收机

    公开(公告)号：US5003626A

    公开(公告)日：1991-03-26

    申请号：US433431

    申请日：1989-11-08

    申请人： Hideo Kuwahara ,  Terumi Chikama ,  Tetsuya Kiyonaga ,  Chiaki Ohsawa

    发明人： Hideo Kuwahara ,  Terumi Chikama ,  Tetsuya Kiyonaga ,  Chiaki Ohsawa

    IPC分类号： H04B10/61 ,  H04B10/63 ,  H04B10/64

    CPC分类号： H04B10/61 ,  H04B10/614 ,  H04B10/63 ,  H04B10/64

    摘要： An optical signal receiver comprising an optical mixing/polarization splitting unit for producing IF optical signals having two orthogonally polarized components, an optical signal receiving unit for producing four corresponding IF electric signals, and a combining circuit for combining two IF electric signals having one polarization with the other two IF electric signals having the other polarization, suppressing fluctuation of the polarization and the intensity noise of the related local optical signal. The intensity noise suppression is also effective for IF electric signals having a higher frequency range.

    摘要翻译： 一种光信号接收机，包括用于产生具有两个正交极化分量的IF光信号的光混合/偏振分离单元，用于产生四个对应的IF电信号的光信号接收单元，以及组合电路，用于将具有一个极化的两个IF电信号 另外两个具有另一极化的IF电信号抑制偏振波动和相关局部光信号的强度噪声。 强度噪声抑制对于具有较高频率范围的IF电信号也是有效的。

    MULTI-WAVELENGTH LIGHT AMPLIFIER
    20.
    发明申请
    MULTI-WAVELENGTH LIGHT AMPLIFIER 有权
    多波长光放大器

    公开(公告)号：US20110262140A1

    公开(公告)日：2011-10-27

    申请号：US13177065

    申请日：2011-07-06

    申请人： Yasushi SUGAYA ,  Miki Takeda ,  Susumu Kinoshita ,  Terumi Chikama

    发明人： Yasushi SUGAYA ,  Miki Takeda ,  Susumu Kinoshita ,  Terumi Chikama

    IPC分类号： H04J14/02

    CPC分类号： H04B10/296 ,  H01S3/06758 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1305 ,  H01S2301/04 ,  H04B10/2931

    摘要： A multi-wavelength light amplifier includes a first-stage light amplifier which has a first light amplifying optical fiber amplifying a light input, a second stage light amplifier which has a second light amplifying optical fiber amplifying a first light output from the first-stage light amplifier, and an optical system which maintains a second light output of the second-stage light amplifier at a constant power level. The first-stage and second-stage light amplifiers have different gain vs wavelength characteristics so that the multi-wavelength light amplifier has no wavelength-dependence of a gain thereof.

    摘要翻译： 多波长光放大器包括具有放大光输入的第一放大光纤的第一级光放大器，具有放大从第一级光输出的第一光的第二光放大光纤的第二级光放大器 放大器和将第二级光放大器的第二光输出维持在恒定功率电平的光学系统。 第一级和第二级光放大器具有不同的增益与波长特性，使得多波长光放大器与其增益没有波长依赖性。