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1. 发明授权

US5048922A Optical fiber cable 失效
标题翻译：光纤电缆
公开(公告)号：US5048922A
公开(公告)日：1991-09-17
申请号：US145662
申请日：1988-01-14
申请人： Kiyofumi Mochizuki , Yoshinori Namihira , Makoto Nunokawa , Yoshinao Iwamoto , Hitoshi Yamamoto
发明人： Kiyofumi Mochizuki , Yoshinori Namihira , Makoto Nunokawa , Yoshinao Iwamoto , Hitoshi Yamamoto
IPC分类号： G02B6/44
CPC分类号： G02B6/4427 , G02B6/4429 , G02B6/4492
摘要： An optical fiber cable in which at least those metallic members of the optical fiber cable which are of high chemical reactivity and electrochemical reactivity are each precoated with a film for preventing them from making direct contact with water when it diffuses into the cable. The film may be a nonmetallic film or a metallic film of low chemical reactivity and electrochemical reactivity.
摘要翻译：其中至少具有高化学反应性和电化学反应性的光纤电缆的金属构件的光纤电缆各自预涂有膜，以防止它们在扩散到电缆中时与水直接接触。该膜可以是非金属膜或具有低化学反应性和电化学反应性的金属膜。

2. 发明授权

US4572608A Optical de-polarizer 失效
标题翻译：光学去偏振器
公开(公告)号：US4572608A
公开(公告)日：1986-02-25
申请号：US578832
申请日：1984-02-10
申请人： Kiyofumi Mochizuki , Yoshinori Namihira
发明人： Kiyofumi Mochizuki , Yoshinori Namihira
IPC分类号： G02B5/30 , G02B6/024 , G02B6/10 , G02B6/34 , G02B27/00 , G02B27/28 , G02B6/26 , G02B6/42
CPC分类号： H04B10/2569 , G02B6/10 , G02B6/2706 , G02B6/2786
摘要： An optical de-polarizer is implemented by using an optical fiber, and/or a beam splitter coupled with output of said optical fiber. An optical fiber is longer than a predetermined length so that equation .vertline.t.sub.1 -t.sub.2 .vertline.>t.sub.c is satified where t.sub.1 is polarization mode dispersion in a first optical fiber, t.sub.2 is a polarization mode dispersion in a second optical fiber which is coupled with output of the first optical fiber, and t.sub.c is coherence time of a beam defined by an optical source. According to the present invention, one of the conditions (1) an angle between polarization axis of the first optical fiber and polarization axis of the second optical fiber is 45.degree., and (2) an angle between polarization axis of the optical fiber and polarization axis of the beam splitter is 45.degree., is satisfied.
摘要翻译：光学去偏振器通过使用光纤和/或与所述光纤的输出端耦合的分束器来实现。光纤比预定长度长，因此在第一光纤中t1是偏振模色散的情况下，等式| t 1 -t 2 || tc被饱和，t2是与第二光纤的输出耦合的第二光纤中的偏振模色散第一光纤，tc是由光源限定的光束的相干时间。根据本发明，条件（1）中，第一光纤的偏振轴与第二光纤的偏振轴之间的角度为45°，（2）光纤的偏振轴与偏振光之间的夹角分束器的轴为45°，满足要求。

3. 发明授权

US4972513A Multi-point optical amplification repeating system 失效
标题翻译：多点光学放大重复系统
公开(公告)号：US4972513A
公开(公告)日：1990-11-20
申请号：US222193
申请日：1988-07-21
申请人： Kiyofumi Mochizuki , Noboru Edagawa , Yoshinao Iwamoto
发明人： Kiyofumi Mochizuki , Noboru Edagawa , Yoshinao Iwamoto
IPC分类号： H04B10/17
CPC分类号： H04B10/2916
摘要： A multi-point optical amplification repeating system is disclosed in which an output of a unidirectional amplifier inserted in a unidirectional repeating optical transmission system is branched and coupled to an input of a unidirectional amplifier inserted in another unidirectional repeating optical transmission system, so that bidirectional optical communication can be performed between many points connected to a plurality of first optical transmission lines. If a bidirectional amplifier is employed in a bidirectional repeating optical transmission system, the above bidirectional optical communication can be also realized by fed back the first port of the bidirectional amplifier to the second port thereof through an optical isolator.
摘要翻译：公开了一种多点光放大重复系统，其中插入在单向中继光传输系统中的单向放大器的输出被分支并耦合到插入在另一个单向中继光传输系统中的单向放大器的输入，使得双向光学可以在连接到多个第一光传输线路的多个点之间进行通信。如果在双向重复光传输系统中采用双向放大器，则也可以通过光隔离器将双向放大器的第一端口反馈到其第二端口来实现上述双向光通信。

4. 发明授权

US4933990A Optical privacy communication system in two-way optical transmission system 失效
标题翻译：双向光传输系统中的光隐私通信系统
公开(公告)号：US4933990A
公开(公告)日：1990-06-12
申请号：US222194
申请日：1988-07-21
申请人： Kiyofumi Mochizuki , Hiroharu Wakabayashi , Yoshinao Iwamoto
发明人： Kiyofumi Mochizuki , Hiroharu Wakabayashi , Yoshinao Iwamoto
IPC分类号： H04B10/00 , H04J14/00 , H04J14/02 , H04K1/00
CPC分类号： H04B10/27
摘要： An optical privacy communication system in optical fiber communications between many points is disclosed in which, each station is provided with a privacy circuit. Each privacy circuit comprises a first optical branch for connecting the station to first and second optical branches, a second optical branch for connecting the first and second optical branches to the optical fiber transmission line, an optical isolator inserted in the first optical branch, for passing only a signal of a direction from the first optical branch to the second optical branch, and an optical filter inserted in the second optical branch, for passing only an optical signal of a frequency assigned to the station, so that an optical privacy communication is carried out between the stations.
摘要翻译：公开了在许多点之间的光纤通信中的光学隐私通信系统，其中每个站设置有隐私电路。每个隐私电路包括用于将站连接到第一和第二光分支的第一光分支，用于将第一和第二光分支连接到光纤传输线的第二光分支，插入第一光分支中的光隔离器，用于通过仅从第一光分支到第二光分支的方向的信号，以及插入到第二光分支中的光滤波器，用于仅通过分配给该电台的频率的光信号，从而携带光隐私通信在车站之间。

5. 发明授权

US4923291A Optical amplification 失效
标题翻译：光放大
公开(公告)号：US4923291A
公开(公告)日：1990-05-08
申请号：US219600
申请日：1988-07-15
申请人： Noboru Edagawa , Kiyofumi Mochizuki , Yoshinao Iwamoto
发明人： Noboru Edagawa , Kiyofumi Mochizuki , Yoshinao Iwamoto
IPC分类号： G02F1/35 , H01S5/00 , H04B10/11 , H04B10/29
CPC分类号： H04B10/2914
摘要： An optical amplification method or system for an optical communication system which transmits signal light from the transmitting side to the receiving side via an optical transmission medium formed by an optical fiber or space. In accordance with the present invention, the signal light entered a certain state of polarization in at least one part of the transmitting side, the receiving side and the optical transmission medium is separated into two orthogonal polarized waves by a polarizing beam coupler/splitter. The two polarized waves are amplified by optical amplifiers disposed in correspondence to their state of polarization, respectively. The amplified orthogonal polarized waves are combined together by another polarizing beam coupler/splitter.
摘要翻译：一种用于通过由光纤或空间形成的光传输介质将信号光从发送侧传输到接收侧的光通信系统的光放大方法或系统。根据本发明，信号光在发送侧的至少一部分中进入一定的偏振状态，接收侧和光传输介质通过偏振光束耦合器/分离器分离成两个正交的偏振波。两个偏振波被分别对应于它们的偏振状态设置的光学放大器放大。放大的正交极化波由另一个偏振光束耦合器/分离器组合在一起。

6. 发明授权

US4899043A Fault monitoring system for optical fiber communication systems 失效
标题翻译：光纤通信系统故障监控系统
公开(公告)号：US4899043A
公开(公告)日：1990-02-06
申请号：US219601
申请日：1988-07-15
申请人： Kiyofumi Mochizuki , Noboru Edagawa , Yoshinao Iwamoto
发明人： Kiyofumi Mochizuki , Noboru Edagawa , Yoshinao Iwamoto
IPC分类号： H04B17/40 , H04B10/035 , H04B10/07 , H04B10/077 , H04B10/297
CPC分类号： H04B10/0777 , H04B2210/078
摘要： A fault monitoring system for optical fiber communication system having a bidirectional optical amplifier between first and second optical fiber transmission lines. An optical monitoring signal of a first frequency different from frequencies of communication signal light of the optical fiber communication system is applied to the first input/output port of the bidirectional optical amplifier through the first optical fiber transmission line and then branched through a first optical filter passing therethrough of the first frequency to apply the branched optical monitoring signal of the first frequency to the second input/output port of the bidirectional amplifier. Another optical monitoring signal of a second frequency different from the first frequency and frequencies of the communication signal light is applied to the second input/output port of the bidirectional optical amplifier through the second optical transmission line and then branched through a second optical filter passing therethrough of the second frequency to apply the branched optical monitoring signal of the second frequency to the first input/output port of the bidirectional amplifier. A fault of the bidirectional amplifier can be detected by monitoring the optical monitoring signals of the first frequency and of the second frequency at respective ends of the first optical fiber transmission line and the second optical fiber transmission line.
摘要翻译：一种用于光纤通信系统的故障监测系统，其具有在第一和第二光纤传输线之间的双向光放大器。与光纤通信系统的通信信号光的频率不同的第一频率的光监视信号通过第一光纤传输线路施加到双向光放大器的第一输入/输出端口，然后通过第一光滤波器通过第一频率，将第一频率的分支光学监视信号施加到双向放大器的第二输入/输出端口。与通信信号光的第一频率和频率不同的第二频率的另一光学监测信号通过第二光传输线路施加到双向光放大器的第二输入/输出端口，然后通过穿过其的第二滤光器分支以将第二频率的分支光学监视信号施加到双向放大器的第一输入/输出端口。通过在第一光纤传输线和第二光纤传输线的各端监视第一频率和第二频率的光监视信号，可以检测双向放大器的故障。

7. 发明授权

US4805977A Optical coupler for optical direct amplifier 失效
标题翻译：光学直接放大器的光耦合器
公开(公告)号：US4805977A
公开(公告)日：1989-02-21
申请号：US115769
申请日：1987-11-02
申请人： Yasuaki Tamura , Kiyofumi Mochizuki
发明人： Yasuaki Tamura , Kiyofumi Mochizuki
IPC分类号： G02B27/28 , G02B6/34 , G02F1/35 , H01S3/30 , H01S5/00 , G02B6/28
CPC分类号： G02B6/4246 , G02B6/29362 , G02B6/29367 , H01S3/302
摘要： A high power pump light source for optical direct amplifier using the stimulated Raman effect is obtained by using a plurality of semiconductor lasers each of which provides low output power. More than two beams of the same wavelength generated by semiconductor lasers are combined (polarization multiplex) by using a polarization prism block, which provides sufficient high power pump light for the stimulated Raman effect amplifier. The output of said polarization prism block is wavelength division multiplexed with signal light to be amplified by using an interference filter block, the output of which is applied to a transmission optical fiber in which amplification of said signal light is effected.

8. 发明授权

US4888817A Polarization diversity light receiving system using baseband combining 失效
标题翻译：使用基带组合的极化分集光接收系统
公开(公告)号：US4888817A
公开(公告)日：1989-12-19
申请号：US258817
申请日：1988-10-17
申请人： Shiro Ryu , Kiyofumi Mochizuki
发明人： Shiro Ryu , Kiyofumi Mochizuki
IPC分类号： H04B10/516 , G02F2/00 , H04B10/07 , H04B10/61
CPC分类号： H04B10/61 , H04B10/614 , H04B10/64
摘要： A polarization diversity light receiving system using base combining is disclosed, which is arranged so that the control signal for the local oscillator laser is the sum of squared values of received signals.

9. 发明授权

US4790655A System for measuring laser spectrum 失效
标题翻译：激光光谱测量系统
公开(公告)号：US4790655A
公开(公告)日：1988-12-13
申请号：US859993
申请日：1986-05-05
申请人： Shu Yamamoto , Kiyofumi Mochizuki
发明人： Shu Yamamoto , Kiyofumi Mochizuki
IPC分类号： G01J3/02 , G01J9/04 , G01B9/02
CPC分类号： G01J9/04
摘要： A system for measuring laser spectrum is disclosed in which the laser light to be measured is branched into one branched light and the other branched light so that the laser spectrum of the light is measured from a beat output resulting from mixing a delayed light obtained by delaying the one branched light for a certain period of time with the other branched light undelayed. In accordance with the present invention, the delay time of the delayed light undergoes such variations as to assume a value equal to an integral multiple of a fixed delay time by the use of an optical directional coupler.
摘要翻译：公开了一种用于测量激光光谱的系统，其中被测量的激光被分支成一个分支的光，另一个分支的光使得光的激光光谱从由将延迟获得的延迟光混合的节拍输出测量一分支光在一段时间内与其他分支光不延迟。根据本发明，延迟光的延迟时间经历这样的变化，即通过使用光学定向耦合器而使其等于固定延迟时间的整数倍的值。

10. 发明授权

US5042039A Er-doped optical fiber laser device 失效
标题翻译：掺铒光纤激光器件
公开(公告)号：US5042039A
公开(公告)日：1991-08-20
申请号：US452806
申请日：1989-12-19
申请人： Noboru Edagawa , Kiyofumi Mochizuki , Hiroharu Wakabayashi
发明人： Noboru Edagawa , Kiyofumi Mochizuki , Hiroharu Wakabayashi
IPC分类号： G02B27/00 , G02F1/35 , G02F1/355 , H01L31/14 , H01S3/06 , H01S3/067 , H01S3/091 , H01S3/17
CPC分类号： H01S3/06708
摘要： An Er-doped optical fiber laser device adapted for pumping by light from a pumping light source in an erbium (Er)-doped optical fiber which enters a single mode at the wavelength of amplified light. In accordance with the present invention, the Er-doped optical fiber is further doped with at least one of holmium (Ho), thulium (Tm) and dysprosium (Dy). The pumping light source emits light in a 1.1 to 1.4 .mu.m band. The output light from the pumping light source and signal light incident to the Er-doped optical fiber are combined by a combining optical fiber coupler.
摘要翻译：掺铒光纤激光器装置，适用于通过掺铒（Er）掺杂的光纤中的泵浦光源的光进行泵浦，该光纤以放大的光的波长进入单一模式。根据本发明，铒掺杂光纤进一步掺杂有钬（Ho），ium（Tm）和镝（Dy）中的至少一种。泵浦光源发射1.1至1.4微米波段的光。来自泵浦光源的输出光和入射到掺铒光纤的信号光通过组合光纤耦合器组合。

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