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1. 发明授权

US07536108B2 High precision chromatic dispersion measuring method and automatic dispersion compensating optical link system that uses this method 有权
标题翻译：高精度色散测量方法和使用该方法的自动色散补偿光链路系统
公开(公告)号：US07536108B2
公开(公告)日：2009-05-19
申请号：US10185486
申请日：2002-06-26
申请人： Akira Hirano , Yutaka Miyamoto , Masahito Tomizawa , Shoichiro Kuwahara , Hiroshi Takahashi , Yasuyuki Inoue
发明人： Akira Hirano , Yutaka Miyamoto , Masahito Tomizawa , Shoichiro Kuwahara , Hiroshi Takahashi , Yasuyuki Inoue
IPC分类号： H04B10/12
CPC分类号： H04B10/25133 , H04B10/25137
摘要： The present invention relates to an automatic dispersion compensating optical link system. Carrier suppressed RZ encoded optical signals generated using carrier suppressing means and binary NRZ code or partial response code, or carrier suppressed clock signals generated using carrier suppressing means and clock signals are transmitted on an optical transmission line. Two bands of the carrier suppressed RZ encoded optical signals or carrier suppressed clock signals transmitted on the optical transmission line are each divided into bands and are received. Phase information of the respective basebands is extracted from the binary NRZ code components or partial response code components or clock signals in each band and the relative phase difference thereof is detected. The chromatic dispersion value of the optical transmission line is then calculated from the relative phase difference.
摘要翻译：本发明涉及自动色散补偿光链路系统。载波抑制使用载波抑制装置产生的RZ编码光信号和二进制NRZ码或部分响应码，或者使用载波抑制装置和时钟信号产生的载波抑制时钟信号在光传输线路上传输。载波抑制RZ编码的光信号的两个频带或在光传输线路上传输的载波抑制时钟信号各自被分成频带并被接收。从每个频带中的二进制NRZ码分量或部分响应码分量或时钟信号中提取各个基带的相位信息，并检测其相对相位差。然后从相对相位差计算光传输线的色散值。

2. 发明授权

US07116917B2 Optical transmitter and optical transmission system 有权
公开(公告)号：US07116917B2
公开(公告)日：2006-10-03
申请号：US10185407
申请日：2002-06-26
申请人： Yutaka Miyamoto , Akira Hirano , Shoichiro Kuwahara , Masahito Tomizawa
发明人： Yutaka Miyamoto , Akira Hirano , Shoichiro Kuwahara , Masahito Tomizawa
IPC分类号： H04B10/12
CPC分类号： H04B10/5561 , H04B10/5051 , H04B10/5055 , H04B10/516 , H04B10/5162 , H04B10/677 , H04B2210/517 , H04J14/0227 , H04J14/0246 , H04J14/0279
摘要： The present invention suppresses to a minimum the degradation of the transmission quality caused by chromatic dispersion characteristic of an optical transmission medium, and the interplay between the chromatic dispersion and non-linear optical effects in dense WDM transport systems. A baseband input data signal is pre-coded in advance by a pre-coding unit, phase modulation is carried out using a pre-coded signal by the optical phase modulating unit, and the phase modulated optical signal is converted to an RZ intensity modulated signal by the optical filter unit that performs phase-shift-keying to amplitude-shift-keying conversion. For example, an optical phase modulating unit generates an encoded DPSK phase modulated signal using a differential phase shirt keying (DPSK) format, and a phase modulated signal is converted to an RZ intensity modulated signal by the optical filter unit disposed downstream of the optical phase modulating unit.

3. 发明授权

US08005374B2 Optical transmission system, optical transmitter for optical transmission system, and optical receiver for optical transmission system 有权
标题翻译：光传输系统，光传输系统光发射机，光传输系统光接收机
公开(公告)号：US08005374B2
公开(公告)日：2011-08-23
申请号：US12723210
申请日：2010-03-12
申请人： Kazushige Yonenaga , Mikio Yoneyama , Masahito Tomizawa , Akira Hirano , Shoichiro Kuwahara , Tomoyoshi Kataoka , Akihide Sano , Gentaro Funatsu
发明人： Kazushige Yonenaga , Mikio Yoneyama , Masahito Tomizawa , Akira Hirano , Shoichiro Kuwahara , Tomoyoshi Kataoka , Akihide Sano , Gentaro Funatsu
IPC分类号： H04B10/06
CPC分类号： H04B10/58 , H04B10/5051 , H04B10/5055 , H04B10/50575 , H04B10/54 , H04B10/66
摘要： An optical transmission system is provided in which the optimum operating point of a Mach-Zehnder interferometer, matched to the optical frequency of the light source on the transmitting side, can be set. The optical receiver (2) has an infinitesimal-modulated signal component detection circuit (222), which uses the signal train output from a balanced detection circuit (221) to detect the infinitesimal-modulated signal component applied to the phase adjustment terminal (201) of an MZI (200) by an infinitesimal-modulated signal oscillation circuit (224); a synchronous detection circuit (223), which synchronously detects the infinitesimal-modulated signals output from the infinitesimal-modulated signal component detection circuit (222) and infinitesimal-modulated signal oscillation circuit (224) and detects the error signal component arising from the shift between the optical signal carrier frequency and the optical frequency characteristic of the MZI (200); and a controller (207), which outputs a control signal to adjust the phase difference between two split optical signals output from the MZI (200) so as to correct the shift amount.
摘要翻译：提供了一种光传输系统，其中可以设置与发射侧的光源的光频率相匹配的马赫 - 曾德干涉仪的最佳工作点。光接收器（2）具有无穷小调制信号分量检测电路（222），其使用从平衡检测电路（221）输出的信号串来检测施加到相位调整端子（201）的无穷小调制信号分量，通过无穷小调制信号振荡电路（224）的MZI（200）; 同步检测电路（223），其同步地检测从无穷小调制信号分量检测电路（222）和无穷小调制信号振荡电路（224）输出的无穷小调制信号，并检测由第二调制信号分量检测电路 MZI（200）的光信号载波频率和光频特性; 以及控制器（207），其输出控制信号以调整从MZI（200）输出的两个分离光信号之间的相位差，以校正偏移量。

4. 发明授权

US07734194B2 Optical transmission system, optical transmitter for optical transmission system, and optical receiver for optical transmission system 有权
标题翻译：光传输系统，光传输系统光发射机，光传输系统光接收机
公开(公告)号：US07734194B2
公开(公告)日：2010-06-08
申请号：US10555710
申请日：2005-03-17
申请人： Kazushige Yonenaga , Mikio Yoneyama , Masahito Tomizawa , Akira Hirano , Shoichiro Kuwahara , Tomoyoshi Kataoka , Akihide Sano , Gentaro Funatsu
发明人： Kazushige Yonenaga , Mikio Yoneyama , Masahito Tomizawa , Akira Hirano , Shoichiro Kuwahara , Tomoyoshi Kataoka , Akihide Sano , Gentaro Funatsu
IPC分类号： H04B10/06
CPC分类号： H04B10/58 , H04B10/5051 , H04B10/5055 , H04B10/50575 , H04B10/54 , H04B10/66
摘要： An optical transmission system is provided in which the optimum operating point of a Mach-Zehnder interferometer, matched to the optical frequency of the light source on the transmitting side, can be set. The optical receiver (2) has an infinitesimal-modulated signal component detection circuit (222), which uses the signal train output from a balanced detection circuit (221) to detect the infinitesimal-modulated signal component applied to the phase adjustment terminal (201) of an MZI (200) by an infinitesimal-modulated signal oscillation circuit (224); a synchronous detection circuit (223), which synchronously detects the infinitesimal-modulated signals output from the infinitesimal-modulated signal component detection circuit (222) and infinitesimal-modulated signal oscillation circuit (224) and detects the error signal component arising from the shift between the optical signal carrier frequency and the optical frequency characteristic of the MZI (200); and a controller (207), which outputs a control signal to adjust the phase difference between two split optical signals output from the MZI (200) so as to correct the shift amount.
摘要翻译：提供了一种光传输系统，其中可以设置与发射侧的光源的光频率相匹配的马赫 - 曾德干涉仪的最佳工作点。光接收器（2）具有无穷小调制信号分量检测电路（222），其使用从平衡检测电路（221）输出的信号串来检测施加到相位调整端子（201）的无穷小调制信号分量，通过无穷小调制信号振荡电路（224）的MZI（200）; 同步检测电路（223），其同步地检测从无穷小调制信号分量检测电路（222）和无穷小调制信号振荡电路（224）输出的无穷小调制信号，并检测由 MZI（200）的光信号载波频率和光频特性; 以及控制器（207），其输出控制信号以调整从MZI（200）输出的两个分离光信号之间的相位差，以校正偏移量。

5. 发明申请

US20100172653A1 Optical Transmission System, Optical Transmitter for Optical Transmission System, and Optical Receiver for Optical Transmission System 有权
标题翻译：光传输系统，光传输系统光发射机和光传输系统光接收机
公开(公告)号：US20100172653A1
公开(公告)日：2010-07-08
申请号：US12723210
申请日：2010-03-12
申请人： Kazushige Yonenaga , Mikio Yoneyama , Masahito Tomizawa , Akira Hirano , Shoichiro Kuwahara , Tomoyoshi Kataoka , Akihide Sano , Gentaro Funatsu
发明人： Kazushige Yonenaga , Mikio Yoneyama , Masahito Tomizawa , Akira Hirano , Shoichiro Kuwahara , Tomoyoshi Kataoka , Akihide Sano , Gentaro Funatsu
IPC分类号： H04B10/00
CPC分类号： H04B10/58 , H04B10/5051 , H04B10/5055 , H04B10/50575 , H04B10/54 , H04B10/66
摘要： An optical transmission system is provided in which the optimum operating point of a Mach-Zehnder interferometer, matched to the optical frequency of the light source on the transmitting side, can be set. The optical receiver (2) has an infinitesimal-modulated signal component detection circuit (222), which uses the signal train output from a balanced detection circuit (221) to detect the infinitesimal-modulated signal component applied to the phase adjustment terminal (201) of an MZI (200) by an infinitesimal-modulated signal oscillation circuit (224); a synchronous detection circuit (223), which synchronously detects the infinitesimal-modulated signals output from the infinitesimal-modulated signal component detection circuit (222) and infinitesimal-modulated signal oscillation circuit (224) and detects the error signal component arising from the shift between the optical signal carrier frequency and the optical frequency characteristic of the MZI (200); and a controller (207), which outputs a control signal to adjust the phase difference between two split optical signals output from the MZI (200) so as to correct the shift amount.
摘要翻译：提供了一种光传输系统，其中可以设置与发射侧的光源的光频率相匹配的马赫 - 曾德干涉仪的最佳工作点。光接收器（2）具有无穷小调制信号分量检测电路（222），其使用从平衡检测电路（221）输出的信号串来检测施加到相位调整端子（201）的无穷小调制信号分量，通过无穷小调制信号振荡电路（224）的MZI（200）; 同步检测电路（223），其同步地检测从无穷小调制信号分量检测电路（222）和无穷小调制信号振荡电路（224）输出的无穷小调制信号，并检测由第二调制信号分量检测电路 MZI（200）的光信号载波频率和光频特性; 以及控制器（207），其输出控制信号以调整从MZI（200）输出的两个分离光信号之间的相位差，以校正偏移量。

6. 发明授权

US07424230B2 Digital transmission system 有权
标题翻译：数字传输系统
公开(公告)号：US07424230B2
公开(公告)日：2008-09-09
申请号：US10308588
申请日：2002-12-03
申请人： Masahito Tomizawa , Akira Hirano , Yoshiaki Kisaka , Yutaka Miyamoto
发明人： Masahito Tomizawa , Akira Hirano , Yoshiaki Kisaka , Yutaka Miyamoto
IPC分类号： H04B10/06 , H04L25/03 , H03M13/00
CPC分类号： H04L25/062
摘要： This digital transmission system is provided with a transmitting apparatus that transmits digital data signals and a receiving apparatus that receives the digital data signals transmitted over a transmission path, compares the signals with a predetermined threshold value, and performs decision reproduction. The receiving apparatus is formed by: decision circuits that receive the input of reception signals, discriminate between the respective reception signals using a plurality of threshold values, and output decision results; and a selection circuit that, based on the decision results output from the decision circuit, selects one decision result from one threshold value from among the decision results from each of the plurality of threshold values, and outputs the selected decision result. As a result, the receiving apparatus is able to individually select which decision result to use from which threshold value.
摘要翻译：该数字传输系统设置有发送数字数据信号的发送装置和接收通过传输路径发送的数字数据信号的接收装置，将该信号与规定的阈值进行比较，进行判定再现。接收装置由以下部分构成：接收接收信号的输入的判定电路，使用多个阈值对各个接收信号进行识别，并输出判定结果; 以及选择电路，其基于从所述判定电路输出的判定结果，从所述多个阈值中的每一个的判定结果中从一个阈值中选择一个判定结果，并输出所选择的判定结果。结果，接收装置能够从哪个阈值单独地选择使用哪个判定结果。

7. 发明申请

US20090162061A1 OPTICAL TRANSMISSION SYSTEM AND METHOD 有权
标题翻译：光传输系统和方法
公开(公告)号：US20090162061A1
公开(公告)日：2009-06-25
申请号：US12096551
申请日：2006-12-21
申请人： Yoshiaki Kisaka , Shigeki Aisawa , Yutaka Miyamoto , Masahito Tomizawa , Yasuyuki Endoh , Kazuhito Takei
发明人： Yoshiaki Kisaka , Shigeki Aisawa , Yutaka Miyamoto , Masahito Tomizawa , Yasuyuki Endoh , Kazuhito Takei
IPC分类号： H04J14/00 , H04J3/00 , H04J14/02
CPC分类号： H04J3/1652 , H04J3/07 , H04J2203/0085
摘要： An optical transmission system for performing frequency synchronization even with a client signal with low frequency accuracy, and for transmitting thereof by accommodating/multiplexing without causing a bit slip. A new overhead is added to the entire client signal, and the signal including the new overhead being stuffed is transmitted in conjunction with a plurality of stuffing bits as an optical signal wherein a data storing bit for a negative stuffing, a stuffing information notification bit, and a stuff bits inserting bit for a positive stuffing in the payload are defined in plurality as stuffing bits for adjusting clock frequencies of the client signal in this new overhead.
摘要翻译：一种光传输系统，用于即使使用低频精度的客户端信号进行频率同步，也可以通过容纳/多路复用而不产生位滑动进行发送。在整个客户端信号中增加新的开销，并且包括填充的新开销的信号与多个填充位一起作为光信号发送，其中，用于负填充的数据存储位，填充信息通知位，并且用于在有效载荷中的正填充的填充比特插入位被定义为多个作为填充位，用于在该新开销中调整客户端信号的时钟频率。

8. 发明授权

US08571037B2 Optical digital transmission system 有权
标题翻译：光数字传输系统
公开(公告)号：US08571037B2
公开(公告)日：2013-10-29
申请号：US13126372
申请日：2009-11-13
申请人： Shigeki Aisawa , Masahito Tomizawa , Yutaka Miyamoto , Yoshiaki Kisaka , Yasuyuki Endo , Katsuyoshi Miura , Kazuhito Takei
发明人： Shigeki Aisawa , Masahito Tomizawa , Yutaka Miyamoto , Yoshiaki Kisaka , Yasuyuki Endo , Katsuyoshi Miura , Kazuhito Takei
IPC分类号： H04L12/28
CPC分类号： H04J3/1652 , H04J3/076 , H04J2203/0089
摘要： An optical digital transmission system of the present invention newly defines one second negative stuff byte in an overhead area for accommodation of the client signals with multiplexing into the OTU frame, newly defines one third positive stuff byte in a corresponding tributary slot in a payload area for accommodation of client signals with multiplexing, newly defines stuff control bits that is used for decision of the use of the second negative stuff byte and the third positive stuff byte in three different places in the overhead area for client signal accommodation with multiplexing, performs control by using the newly defined stuff control bits when accommodation of the client signal with the third positive stuff byte or the second negative stuff byte is required, and performs stuff control without using the newly defined stuff control bits when accommodation of the client signal by the third positive stuff byte and the second negative stuff byte is not required.
摘要翻译：本发明的光数字传输系统新定义了一个开销区域中的一个第二负填充字节，用于将客户端信号复用到OTU帧中，新定义了有效负载区域中的相应支路时隙中的三分之一正填充字节客户端信号采用多路复用方式，新定义了用于决定使用第二负填充字节和第三正填充字节的填充控制位，用于多路复用的客户端信号调用的开销区域中的三个不同位置，执行控制当需要用第三正填充字节或第二负填充字节调节客户端信号时，使用新定义的填充控制位，并且在将客户端信号调节为第三正值时，不使用新定义的填充控制位执行填充控制填充字节和第二个负面填充字节不是必需的。

9. 发明申请

US20110262136A1 OPTICAL DIGITAL TRANSMISSION SYSTEM 有权
标题翻译：光数字传输系统
公开(公告)号：US20110262136A1
公开(公告)日：2011-10-27
申请号：US13126372
申请日：2009-11-13
申请人： Shigeki Aisawa , Masahito Tomizawa , Yutaka Miyamoto , Yoshiaki Kisaka , Yasuyuki Endo , Katsuyoshi Miura , Kazuhito Takei
发明人： Shigeki Aisawa , Masahito Tomizawa , Yutaka Miyamoto , Yoshiaki Kisaka , Yasuyuki Endo , Katsuyoshi Miura , Kazuhito Takei
IPC分类号： H04J14/00
CPC分类号： H04J3/1652 , H04J3/076 , H04J2203/0089
摘要： An optical digital transmission system of the present invention newly defines one second negative stuff byte in an overhead area for accommodation of the client signals with multiplexing into the OTU frame, newly defines one third positive stuff byte in a corresponding tributary slot in a payload area for accommodation of client signals with multiplexing, newly defines stuff control bits that is used for decision of the use of the second negative stuff byte and the third positive stuff byte in three different places in the overhead area for client signal accommodation with multiplexing, performs control by using the newly defined stuff control bits when accommodation of the client signal with the third positive stuff byte or the second negative stuff byte is required, and performs stuff control without using the newly defined stuff control bits when accommodation of the client signal by the third positive stuff byte and the second negative stuff byte is not required.
摘要翻译：本发明的光数字传输系统新定义了一个开销区域中的一个第二负填充字节，用于将客户端信号复用到OTU帧中，新定义了有效负载区域中的相应支路时隙中的三分之一正填充字节客户端信号采用多路复用方式，新定义了用于决定使用第二负填充字节和第三正填充字节的填充控制位，用于多路复用的客户端信号调用的开销区域中的三个不同位置，执行控制当需要用第三正填充字节或第二负填充字节调节客户端信号时，使用新定义的填充控制位，并且在将客户端信号调节为第三正值时，不使用新定义的填充控制位执行填充控制填充字节和第二个负面填充字节不是必需的。

10. 发明授权

US08514881B2 Digital transmission system and digital transmission method 有权
标题翻译：数字传输系统和数字传输方式
公开(公告)号：US08514881B2
公开(公告)日：2013-08-20
申请号：US12522895
申请日：2008-01-16
申请人： Yoshiaki Kisaka , Takuya OHara , Shigeki Aisawa , Yutaka Miyamoto , Kazuhito Takei , Yasuyuki Endoh , Katsuyoshi Miura , Tadanobu Nikaido , Masahito Tomizawa
发明人： Yoshiaki Kisaka , Takuya OHara , Shigeki Aisawa , Yutaka Miyamoto , Kazuhito Takei , Yasuyuki Endoh , Katsuyoshi Miura , Tadanobu Nikaido , Masahito Tomizawa
IPC分类号： H04J3/16
CPC分类号： H04J3/1664 , H04J3/07 , H04J3/14 , H04J2203/0085 , H04J2203/0089 , H04L1/24
摘要： A digital transmission system includes at least a client device and a transmission device, and rate-adjusts the client signal transmitted from the client device to the transmission device before accommodating/multiplexing the signal in a frame. The transmission device includes a rate adjusting unit and a frame processing unit. The rate adjusting unit encapsulates the client signal by using a predetermined frame structure, inserts an idle pattern if necessary, and performs rate adjustment into the bit rate which can be contained in the frame. The frame processing unit accommodates/multiplexes the signal after the rate adjustment. The digital transmission system inserts a bit string of the client signal directly in a payload area of the digital frame, or accommodates and multiplexes it. Alternatively, a specific pattern is accommodated in the payload area, or accommodated and multiplexed after performing a reversible digital signal processing.
摘要翻译：数字传输系统至少包括客户端设备和传输设备，并且在将信号容纳/复用为一帧之前，将从客户端设备发送的客户端信号速率调整到传输设备。传输设备包括速率调整单元和帧处理单元。速率调整单元通过使用预定的帧结构来封装客户端信号，如果需要则插入空闲模式，并且进行速率调整到可以包含在帧中的比特率。帧处理单元容纳/复用速率调整后的信号。数字传输系统将客户端信号的位串直接插入数字帧的有效载荷区域，或者容纳和复用它。或者，特定模式被容纳在有效负载区域中，或者在执行可逆数字信号处理之后被容纳和多路复用。

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