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1. 发明授权

US06583900B2 Optical transmission apparatus, optical transmission system, and optical terminal station 有权
公开(公告)号：US06583900B2
公开(公告)日：2003-06-24
申请号：US10032094
申请日：2001-12-31
申请人： Hiroshi Onaka , Hideyuki Miyata , Kazue Otsuka , Yutaka Kai , Tadao Nakazawa , Terumi Chikama
发明人： Hiroshi Onaka , Hideyuki Miyata , Kazue Otsuka , Yutaka Kai , Tadao Nakazawa , Terumi Chikama
IPC分类号： H04B1020
CPC分类号： H04J14/0297 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0209 , H04J14/021 , H04J14/0212 , H04J14/0213 , H04J14/0219 , H04J14/0283 , H04J14/0289 , H04J14/0291 , H04J14/0294
摘要： In an OADM system, an OADM device includes an AOTF. The AOTF can select an optional wavelength by changing the frequency of an RF signal to be applied. An optical signal having a specified wavelength can be dropped from a wavelength-multiplexed optical signal input from an input terminal, or a wavelength-multiplexed optical signal input from an add port can be multiplexed with a through optical signal. However, considering the increase in coherent cross talk, the AOTF should be exclusively used for dropping in an actual device configuration. Otherwise, a drop optical signal is branched by an optical coupler with the wavelength selected by a tributary station. Thus, the wavelength selected by the tributary station can be extracted by the AOTF from the through optical signal.

2. 发明授权

US06538782B1 Light branching/inserting apparatus and light branching apparatus using wavelength selection filter 失效
标题翻译：光分路/插入装置和使用波长选择滤波器的光分支装置
公开(公告)号：US06538782B1
公开(公告)日：2003-03-25
申请号：US09076068
申请日：1998-05-12
申请人： Kazue Otsuka , Hiroshi Onaka , Terumi Chikama
发明人： Kazue Otsuka , Hiroshi Onaka , Terumi Chikama
IPC分类号： H04B1000
CPC分类号： H04J14/021 , H04J14/0205 , H04J14/0206 , H04J14/0209 , H04J14/0212 , H04J14/0221
摘要： A light branching/inserting apparatus which can easily control light signal wavelengths, and which can branch, insert or transmit light signals having an optional wavelength and optional multiplexed number, by using a wavelength selection filter utilizing acousto-optic effects. The apparatus comprises; an ADM node section 10 which has an AOTF 11 with four ports as a wavelength selection filter and is connected to a transmission path, an RF signal generator 20 which generates an RF signal of an optional frequency and applies the signal to the AOTF 11, a selected wavelength-variable light branching section 30 which receives and processes the light signal output from the branching port of the AOTF 11 for each wavelength, a light inserting section 40 which generates an optional number of insertion light signals with optional wavelengths and sends the insertion light signals to an insertion port of the AOTF 11, and a monitoring section 50 which monitors the spectrum of the light signal input/output to/from the ADM node section 10.
摘要翻译：一种光分支/插入装置，其可以容易地控制光信号波长，并且可以通过使用利用声光效应的波长选择滤波器来分支，插入或发送具有可选波长和可选复用数的光信号。该装置包括：具有AOTF 11的ADM节点部分10，其具有四个端口作为波长选择滤波器并连接到传输路径; RF信号发生器20，其生成任选频率的RF信号并将该信号施加到AOTF 11; 选择的波长可变光分支部分30，其接收和处理从每个波长的AOTF 11的分支端口输出的光信号;光插入部分40，其产生任选数量的具有任选波长的插入光信号，并发送插入光信号到AOTF11的插入端口，以及监视部分50，其监视从/从ADM节点部分10输入/输出的光信号的频谱。

3. 发明授权

US06351323B1 Optical transmission apparatus, optical transmission system, and optical terminal station 失效
标题翻译：光传输装置，光传输系统和光终端
公开(公告)号：US06351323B1
公开(公告)日：2002-02-26
申请号：US09080399
申请日：1998-05-18
申请人： Hiroshi Onaka , Hideyuki Miyata , Kazue Otsuka , Yutaka Kai , Tadao Nakazawa , Terumi Chikama
发明人： Hiroshi Onaka , Hideyuki Miyata , Kazue Otsuka , Yutaka Kai , Tadao Nakazawa , Terumi Chikama
IPC分类号： H04B1004
CPC分类号： H04J14/0297 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0209 , H04J14/021 , H04J14/0212 , H04J14/0213 , H04J14/0219 , H04J14/0283 , H04J14/0289 , H04J14/0291 , H04J14/0294
摘要： In an OADM system, an OADM device includes an AOTF. The AOTF can select an optional wavelength by changing the frequency of an RF signal to be applied. An optical signal having a specified wavelength can be dropped from a wavelength-multiplexed optical signal input from an input terminal, or a wavelength-multiplexed optical signal input from an add port can be multiplexed with a through optical signal. However, considering the increase in coherent cross talk, the AOTF should be exclusively used for dropping in an actual device configuration. Otherwise, a drop optical signal is branched by an optical coupler with the wavelength selected by a tributary station. Thus, the wavelength selected by the tributary station can be extracted by the AOTF from the through optical signal.
摘要翻译：在OADM系统中，OADM设备包括AOTF。 AOTF可以通过改变要施加的RF信号的频率来选择可选的波长。具有指定波长的光信号可以从输入端输入的波分复用光信号中丢弃，或从加入口输入的波分复用光信号可以与通过光信号复用。然而，考虑到相干串扰的增加，AOTF应该专门用于实际的设备配置。否则，分支光信号由具有由分支站选择的波长的光耦合器分支。因此，辅助站选择的波长可以由AOTF从通过光信号提取。

4. 发明授权

US07142785B2 Light branching/inserting apparatus and light branching apparatus using wavelength selection filter 失效
标题翻译：光分路/插入装置和使用波长选择滤波器的光分支装置
公开(公告)号：US07142785B2
公开(公告)日：2006-11-28
申请号：US10354077
申请日：2003-01-30
申请人： Kazue Otsuka , Hiroshi Onaka , Terumi Chikama
发明人： Kazue Otsuka , Hiroshi Onaka , Terumi Chikama
IPC分类号： H04B10/00
CPC分类号： H04J14/021 , H04J14/0205 , H04J14/0206 , H04J14/0209 , H04J14/0212 , H04J14/0221
摘要： A light branching/inserting apparatus which can easily control light signal wavelengths, and which can branch, insert or transmit light signals having an optional wavelength and optional multiplexed number, by using a wavelength selection filter utilizing acousto-optic effects. The apparatus comprises; an ADM node section 10 which has an AOTF 11 with four ports as a wavelength selection filter and is connected to a transmission path, an RF signal generator 20 which generates an RF signal of an optional frequency and applies the signal to the AOTF 11, a selected wavelength-variable light branching section 30 which receives and processes the light signal output from the branching port of the AOTF 11 for each wavelength, a light inserting section 40 which generates an optional number of insertion light signals with optional wavelengths and sends the insertion light signals to an insertion port of the AOTF 11, and a monitoring section 50 which monitors the spectrum of the light signal input/output to/from the ADM node section 10.
摘要翻译：一种光分支/插入装置，其可以容易地控制光信号波长，并且可以通过使用利用声光效应的波长选择滤波器来分支，插入或发送具有可选波长和可选复用数的光信号。该装置包括：具有AOTF 11的ADM节点部分10，其具有四个端口作为波长选择滤波器并连接到传输路径; RF信号发生器20，其生成任选频率的RF信号并将该信号施加到AOTF 11; 选择的波长可变光分支部分30，其接收和处理从每个波长的AOTF 11的分支端口输出的光信号;光插入部分40，其产生任选数量的具有任选波长的插入光信号，并发送插入光信号到AOTF11的插入端口，以及监视部分50，其监视从/从ADM节点部分10输入/输出的光信号的频谱。

5. 发明授权

US06178037B1 Optical amplifying apparatus 失效
标题翻译：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。

6. 发明授权

US5737118A Optical amplifying apparatus 失效
标题翻译：光放大装置
公开(公告)号：US5737118A
公开(公告)日：1998-04-07
申请号：US601244
申请日：1996-02-14
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： H01S3/094 , H01S3/06 , H01S3/067 , H01S3/0941 , H01S3/10 , H01S3/13 , H01S5/042 , H01S5/06 , H01S5/068 , H01S5/0683 , H01S5/50 , H04B10/03 , H04B10/07 , H04B10/079 , H04B10/293 , H04B10/90 , H01S3/00
CPC分类号： H01S3/1301 , H01S5/0683 , H01S5/0617 , H01S5/06808 , 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，根据状态监视的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。

7. 发明授权

US5050176A Direct modulation phase-shift-keying system and method 失效
标题翻译：直接调制相移键控系统及方法
公开(公告)号：US5050176A
公开(公告)日：1991-09-17
申请号：US540284
申请日：1990-06-19
申请人： Takao Naito , Terumi Chikama , Shigeki Watanabe , Tetsuya Kiyonaga , Hiroshi Onaka , Yoshihito Onoda
发明人： Takao Naito , Terumi Chikama , Shigeki Watanabe , Tetsuya Kiyonaga , Hiroshi Onaka , Yoshihito Onoda
IPC分类号： H01S3/10 , H04B10/516 , H04B10/556 , H04B10/61 , H04L27/20 , H04L27/22 , H04L27/227 , H04L27/233
CPC分类号： H04L27/2331 , H04B10/50 , H04B10/504 , H04B10/5561 , H04B10/60 , H04B10/64 , H04L27/2096 , H04L27/223 , H04L27/2276
摘要： A direct modulation PSK system and method, in a coherent optical fiber transmission system, in which an injection current supplied to a laser diode is adapted to be directly varied is disclosed. In this system or method, a modulating current pulse is superposed on a bias current for the laser diode so that a specified phase condition may be satisfied. Thereby, a differential coding circuit and an external modulator being indispensable for a DPSK system become unnecessary and, in addition, the system becomes less susceptible to the influence of wavelength dispersion than the DPSK system and able to reproduce the carrier.

8. 发明授权

US07088922B2 Wavelength division multiplexing optical communication system 有权
公开(公告)号：US07088922B2
公开(公告)日：2006-08-08
申请号：US10405936
申请日：2003-04-03
申请人： Hiroaki Tomofuji , Hiroshi Onaka , Terumi Chikama
发明人： Hiroaki Tomofuji , Hiroshi Onaka , Terumi Chikama
IPC分类号： H04J14/02 , H04B10/04
CPC分类号： H04Q11/0062 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04J14/0224 , H04J14/026 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0075
摘要： The present invention aims to provide a WDM optical communication system that can arrange efficiently optical signals of a plurality of bit rates at different wavelength spacing. To this end, for example, a basic constitution of a demultiplexing section to be applied to the WDM optical communication system of the present invention is provided with a demultiplexer that demultiplexes WDM signal light into 2m components in accordance with a plurality of wavelength regions set according to minimum wavelength spacing, 2m optical switches, each of which has one input port to which light from the demultiplexer is input, and a plurality of output ports, that selects one of the plurality of output ports to connect it to the input port, and m multiplexers that each multiplexes each output light of the 2m optical switches, wherein switching operations of the optical switches is set such that the bandwidth of each optical signal is approximately the same as the wavelength arrangement spacing corresponding to each bit rate.

9. 发明授权

US4965858A Polarization diversity optical receiver for coherent optical communication 失效
标题翻译：用于相干光通信的极化分集光接收机
公开(公告)号：US4965858A
公开(公告)日：1990-10-23
申请号：US310628
申请日：1989-02-14
申请人： Takao Naito , Terumi Chikama , Shigeki Watanabe , Tetsuya Kiyonaga , Yoshihito Onoda , Hideo Kuwahara , Hiroshi Onaka , Hideyuki Miyata
发明人： Takao Naito , Terumi Chikama , Shigeki Watanabe , Tetsuya Kiyonaga , Yoshihito Onoda , Hideo Kuwahara , Hiroshi Onaka , Hideyuki Miyata
IPC分类号： G02F2/00 , H04B10/25 , H04B10/516 , H04B10/564 , H04B10/61
CPC分类号： H04B10/61 , H04B10/614 , H04B10/64
摘要： A polarized wave diversity optical receiver for coherent optical communication including: an optical local oscillating circuit (7) for oscillating local oscillating light; a mixing circuit (8) for mixing signal light and the local oscillating light to obtain two polarized components; a detecting circuit (9) for detecting the polarized component to output intermediate frequency signals (e.sub.S and e.sub.P); and a frequency control circuit (11) for controlling, in accordance with the intermediate frequency signals (e.sub.S and e.sub.P), the oscillating frequency of the optical local oscillating circuit (7). To ensure that the intermediate frequency does not disappear, the frequency control circuit (11) outputs a combined signal of a sum and a difference of the intermediate frequency signals (e.sub.S and e.sub.P).

10. 发明授权

US5568305A Heterodyne receiver provided with a frequency discriminator for coherent lightwave communications 失效
标题翻译：带有用于相干光波通信的频率鉴别器的异步接收机
公开(公告)号：US5568305A
公开(公告)日：1996-10-22
申请号：US462565
申请日：1995-06-05
申请人： Takao Naito , Terumi Chikama , Hiroshi Onaka
发明人： Takao Naito , Terumi Chikama , Hiroshi Onaka
IPC分类号： H03D3/06 , H03D3/22 , H03D9/04 , H04B10/06
CPC分类号： H04B10/60 , H03D3/22 , H04B10/64 , H03D9/04
摘要： A heterodyne receiver including a frequency discriminator adapted such that a signal to be subjected to frequency discrimination is divided into two signals and mixed together after one of the divided signals has been given a delay time, and additionally provided with a filter, of which a cutoff frequency is determined according to the delay time, disposed in the front stage. This results in both improvement of accuracy in frequency identification and expansion of the capture range.
摘要翻译：一种外差接收机，包括频率鉴别器，其适于使得要被频率鉴别的信号被划分为两个信号，并且在一个分频信号被给予延迟时间之后混合在一起，并且另外设置有滤波器，其中截止频率根据延迟时间确定，处于前置阶段。这样可以提高频率识别的准确性和捕获范围的扩大。

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