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1. 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。

2. 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。

3. 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。

4. 发明授权

US07437069B2 Automatic power restoring method and optical communication system 有权
公开(公告)号：US07437069B2
公开(公告)日：2008-10-14
申请号：US10793665
申请日：2004-03-05
申请人： Hiroyuki Deguchi , Shinichirou Harasawa , Hideki Maeda , Akira Naka , Gentaro Funatsu
发明人： Hiroyuki Deguchi , Shinichirou Harasawa , Hideki Maeda , Akira Naka , Gentaro Funatsu
IPC分类号： H04J14/02
CPC分类号： H04B10/03 , H04B10/0771 , H04B2210/074 , H04B2210/075 , H04B2210/077 , H04B2210/078 , H04B2210/08
摘要： The present invention provides an automatic power restoring method capable of reliably detecting continuity by the dissolution of a line fault, to restore the optical power, even in a structure including an optical amplification medium on an optical transmission path and an optical communication system using the method. To this end, in an optical communication system to which the automatic power restoring method of the invention is applied, a pilot signal having a low transmission rate, a wavelength of which is set based on loss wavelength characteristics obtained by combining loss wavelength characteristics of an optical fiber used for the optical transmission path and loss wavelength characteristics of the optical amplification medium on the optical transmission path, is transmitted and received between an optical transmitting station and an optical receiving station when a line fault occurs, and a detection of continuity is thus performed. According to the result of the continuity detection, the power state at the occurrence of line fault is automatically restored to the power state at a time of normal operation.

5. 发明授权

US07664392B2 Automatic power restoring method and optical communication system 有权
标题翻译：自动功率恢复方法和光通信系统
公开(公告)号：US07664392B2
公开(公告)日：2010-02-16
申请号：US12081780
申请日：2008-04-21
申请人： Hiroyuki Deguchi , Shinichirou Harasawa , Hideki Maeda , Akira Naka , Gentaro Funatsu
发明人： Hiroyuki Deguchi , Shinichirou Harasawa , Hideki Maeda , Akira Naka , Gentaro Funatsu
IPC分类号： H04B10/08
CPC分类号： H04B10/03 , H04B10/0771 , H04B2210/074 , H04B2210/075 , H04B2210/077 , H04B2210/078 , H04B2210/08
摘要： The present invention provides an automatic power restoring method capable of reliably detecting continuity by the dissolution of a line fault, to restore the optical power, even in a structure including an optical amplification medium on an optical transmission path and an optical communication system using the method. To this end, in an optical communication system to which the automatic power restoring method of the invention is applied, a pilot signal having a low transmission rate, a wavelength of which is set based on loss wavelength characteristics obtained by combining loss wavelength characteristics of an optical fiber used for the optical transmission path and loss wavelength characteristics of the optical amplification medium on the optical transmission path, is transmitted and received between an optical transmitting station and an optical receiving station when a line fault occurs, and a detection of continuity is thus performed. According to the result of the continuity detection, the power state at the occurrence of line fault is automatically restored to the power state at a time of normal operation.
摘要翻译：本发明提供了一种自动电力恢复方法，即使在包括光传输路径上的光放大介质的结构和使用该方法的光通信系统中，也能够可靠地检测线路故障的溶解，恢复光功率的连续性。为此，在应用本发明的自动电力恢复方法的光通信系统中，具有低传输速率的导频信号，其波长是基于通过组合丢失波长特性而获得的损耗波长特性来设置的用于光传输路径的光纤和光传输路径上的光放大介质的损耗波长特性在线路故障发生时在光发送站和光接收站之间被发送和接收，因此连续性的检测因此执行。根据连续性检测的结果，发生线路故障时的电源状态在正常运行时自动恢复到电源状态。

6. 发明申请

US20090175616A1 Automatic power restoring method and optical communication system 有权
标题翻译：自动功率恢复方法和光通信系统
公开(公告)号：US20090175616A1
公开(公告)日：2009-07-09
申请号：US12081781
申请日：2008-04-21
申请人： Hiroyuki Deguchi , Shinichirou Harasawa , Hideki Maeda , Akira Naka , Gentaro Funatsu
发明人： Hiroyuki Deguchi , Shinichirou Harasawa , Hideki Maeda , Akira Naka , Gentaro Funatsu
IPC分类号： H04B10/00 , H04B10/08
CPC分类号： H04B10/03 , H04B10/0771 , H04B2210/074 , H04B2210/075 , H04B2210/077 , H04B2210/078 , H04B2210/08
摘要： The present invention provides an automatic power restoring method capable of reliably detecting continuity by the dissolution of a line fault, to restore the optical power, even in a structure including an optical amplification medium on an optical transmission path and an optical communication system using the method. To this end, in an optical communication system to which the automatic power restoring method of the invention is applied, a pilot signal having a low transmission rate, a wavelength of which is set based on loss wavelength characteristics obtained by combining loss wavelength characteristics of an optical fiber used for the optical transmission path and loss wavelength characteristics of the optical amplification medium on the optical transmission path, is transmitted and received between an optical transmitting station and an optical receiving station when a line fault occurs, and a detection of continuity is thus performed. According to the result of the continuity detection, the power state at the occurrence of line fault is automatically restored to the power state at a time of normal operation.
摘要翻译：本发明提供了一种自动电力恢复方法，即使在包括光传输路径上的光放大介质的结构和使用该方法的光通信系统中，也能够可靠地检测线路故障的溶解，恢复光功率的连续性。为此，在应用本发明的自动电力恢复方法的光通信系统中，具有低传输速率的导频信号，其波长是基于通过组合丢失波长特性而获得的损耗波长特性来设置的用于光传输路径的光纤和光传输路径上的光放大介质的损耗波长特性在线路故障发生时在光发送站和光接收站之间被发送和接收，因此连续性的检测因此执行。根据连续性检测的结果，发生线路故障时的电源状态在正常运行时自动恢复到电源状态。

7. 发明授权

US07420666B2 Measurement method by OTDR and terminal station apparatus 有权
标题翻译： OTDR和终端设备的测量方法
公开(公告)号：US07420666B2
公开(公告)日：2008-09-02
申请号：US11783047
申请日：2007-04-05
申请人： Takayuki Maehara , Shinichirou Harasawa , Gentaro Funatsu , Hideki Maeda , Akira Naka
发明人： Takayuki Maehara , Shinichirou Harasawa , Gentaro Funatsu , Hideki Maeda , Akira Naka
IPC分类号： G01N21/00
CPC分类号： H04B10/2916 , H04B10/071
摘要： In a method for performing OTDR measurement in an optical transmission system including a first terminal station and a second terminal station, OTDR signal light is transmitted from an OTDR provided in the first terminal station to the second terminal station, in which the OTDR signal light is Raman amplified by using main signal light of the optical transmission system as pump light.
摘要翻译：在包括第一终端站和第二终端站的光传输系统中进行OTDR测量的方法中，OTDR信号光从在第一终端站提供的OTDR发送到第二终端站，OTDR信号光是通过使用光传输系统的主信号灯作为泵浦光放大拉曼。

8. 发明授权

US07792430B2 Automatic power restoring method and optical communication system 有权
公开(公告)号：US07792430B2
公开(公告)日：2010-09-07
申请号：US12081781
申请日：2008-04-21
申请人： Hiroyuki Deguchi , Shinichirou Harasawa , Hideki Maeda , Akira Naka , Gentaro Funatsu
发明人： Hiroyuki Deguchi , Shinichirou Harasawa , Hideki Maeda , Akira Naka , Gentaro Funatsu
IPC分类号： H04B10/08
CPC分类号： H04B10/03 , H04B10/0771 , H04B2210/074 , H04B2210/075 , H04B2210/077 , H04B2210/078 , H04B2210/08
摘要： The present invention provides an automatic power restoring method capable of reliably detecting continuity by the dissolution of a line fault, to restore the optical power, even in a structure including an optical amplification medium on an optical transmission path and an optical communication system using the method. To this end, in an optical communication system to which the automatic power restoring method of the invention is applied, a pilot signal having a low transmission rate, a wavelength of which is set based on loss wavelength characteristics obtained by combining loss wavelength characteristics of an optical fiber used for the optical transmission path and loss wavelength characteristics of the optical amplification medium on the optical transmission path, is transmitted and received between an optical transmitting station and an optical receiving station when a line fault occurs, and a detection of continuity is thus performed. According to the result of the continuity detection, the power state at the occurrence of line fault is automatically restored to the power state at a time of normal operation.

9. 发明申请

US20080317461A1 Automatic power restoring method and optical communication system 有权
标题翻译：自动功率恢复方法和光通信系统
公开(公告)号：US20080317461A1
公开(公告)日：2008-12-25
申请号：US12081780
申请日：2008-04-21
申请人： Hiroyuki Deguchi , Shinichirou Harasawa , Hideki Maeda , Akira Naka , Gentaro Funatsu
发明人： Hiroyuki Deguchi , Shinichirou Harasawa , Hideki Maeda , Akira Naka , Gentaro Funatsu
IPC分类号： H04B10/00
CPC分类号： H04B10/03 , H04B10/0771 , H04B2210/074 , H04B2210/075 , H04B2210/077 , H04B2210/078 , H04B2210/08
摘要： The present invention provides an automatic power restoring method capable of reliably detecting continuity by the dissolution of a line fault, to restore the optical power, even in a structure including an optical amplification medium on an optical transmission path and an optical communication system using the method. To this end, in an optical communication system to which the automatic power restoring method of the invention is applied, a pilot signal having a low transmission rate, a wavelength of which is set based on loss wavelength characteristics obtained by combining loss wavelength characteristics of an optical fiber used for the optical transmission path and loss wavelength characteristics of the optical amplification medium on the optical transmission path, is transmitted and received between an optical transmitting station and an optical receiving station when a line fault occurs, and a detection of continuity is thus performed. According to the result of the continuity detection, the power state at the occurrence of line fault is automatically restored to the power state at a time of normal operation.
摘要翻译：本发明提供了一种自动电力恢复方法，即使在包括光传输路径上的光放大介质的结构和使用该方法的光通信系统中，也能够可靠地检测线路故障的溶解，恢复光功率的连续性。为此，在应用本发明的自动电力恢复方法的光通信系统中，具有低传输速率的导频信号，其波长是基于通过组合丢失波长特性而获得的损耗波长特性来设置的用于光传输路径的光纤和光传输路径上的光放大介质的损耗波长特性在线路故障发生时在光发送站和光接收站之间被发送和接收，因此连续性的检测因此执行。根据连续性检测的结果，发生线路故障时的电源状态在正常运行时自动恢复到电源状态。

10. 发明申请

US20070183785A1 Measurement method by OTDR and terminal station apparatus 有权
公开(公告)号：US20070183785A1
公开(公告)日：2007-08-09
申请号：US11783047
申请日：2007-04-05
申请人： Takayuki Maehara , Shinichirou Harasawa , Gentaro Funatsu , Hideki Maeda , Akira Naka
发明人： Takayuki Maehara , Shinichirou Harasawa , Gentaro Funatsu , Hideki Maeda , Akira Naka
IPC分类号： H04B10/00
CPC分类号： H04B10/2916 , H04B10/071
摘要： In a method for performing OTDR measurement in an optical transmission system including a first terminal station and a second terminal station, OTDR signal light is transmitted from an OTDR provided in the first terminal station to the second terminal station, in which the OTDR signal light is Raman amplified by using main signal light of the optical transmission system as pump light.

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