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公开(公告)号：US07286758B2
公开(公告)日：2007-10-23
申请号：US11332860
申请日：2006-01-13
CPC分类号： H04B10/07955 , H04B1/745 , H04B10/032 , H04B10/077
摘要： A method for switching a transmission route in an optical network. A regenerator station extracts a main signal, and detects the input level of the main signal. When the input level falls below a threshold, the regenerator station determines that a failure occurs, and stops output of a main signal from the regenerator station, and transmits a control signal indicating occurrence of the failure to a receiver station, which separates the control signal from a main signal transmitted thereto, detects the input level of the main signal at the receiver station, analyzes the separated control signal, and determines whether or not a failure occurs. When the input level of the main signal at the receiver station falls below a threshold, or when the separated control signal indicates occurrence of a failure, the receiver station detects the occurrence of the failure, and switches the transmission route.
摘要翻译： 一种在光网络中切换传输路由的方法。 再生器站提取主信号，并检测主信号的输入电平。 当输入电平低于阈值时，再生器站确定发生故障，并且停止来自再生站的主信号的输出，并将指示故障发生的控制信号发送到接收站，该接收机将控制信号 从发送到其的主信号，检测接收站处的主信号的输入电平，分析分离的控制信号，并确定是否发生故障。 当接收站的主信号的输入电平低于阈值时，或当分离的控制信号表示发生故障时，接收站检测到故障的发生，并切换传输路由。
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公开(公告)号：US20060188253A1
公开(公告)日：2006-08-24
申请号：US11332860
申请日：2006-01-13
IPC分类号： H04B10/08
CPC分类号： H04B10/07955 , H04B1/745 , H04B10/032 , H04B10/077
摘要： A method for switching a transmission route in an optical network. A regenerator station extracts a main signal, and detects the input level of the main signal. When the input level falls below a threshold, the regenerator station determines that a failure occurs, and stops output of a main signal from the regenerator station, and transmits a control signal indicating occurrence of the failure to a receiver station, which separates the control signal from a main signal transmitted thereto, detects the input level of the main signal at the receiver station, analyzes the separated control signal, and determines whether or not a failure occurs. When the input level of the main signal at the receiver station falls below a threshold, or when the separated control signal indicates occurrence of a failure, the receiver station detects the occurrence of the failure, and switches the transmission route.
摘要翻译： 一种在光网络中切换传输路由的方法。 再生器站提取主信号，并检测主信号的输入电平。 当输入电平低于阈值时，再生器站确定发生故障，并且停止来自再生站的主信号的输出，并将指示故障发生的控制信号发送到接收站，该接收机将控制信号 从发送到其的主信号，检测接收站处的主信号的输入电平，分析分离的控制信号，并确定是否发生故障。 当接收站的主信号的输入电平低于阈值时，或当分离的控制信号表示发生故障时，接收站检测到故障的发生，并切换传输路由。
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3.发明授权公开(公告)号：US06987903B2
公开(公告)日：2006-01-17
申请号：US11101518
申请日：2005-04-08
IPC分类号： G02B6/28
CPC分类号： H04B10/25253
摘要： An optical transmission network includes a first dispersion compensator arranged in a maximum dispersion span having a maximum dispersion value and searched out from within a maximum dispersion route having a maximum dispersion value from among routes of non-regeneration intervals within which a dispersion value before dispersion compensation does not satisfy an upper limit of a dispersion tolerance, and a second dispersion compensator arranged in a maximum dispersion span having a maximum dispersion value searched out from within a maximum dispersion route having a maximum dispersion value from among the routes when a dispersion compensator is successively arranged until a route of a non-regeneration interval within which a dispersion value of a certain channel does not satisfy the dispersion tolerance does not remain any more based on the dispersion value after the dispersion compensation with respect to the searched out maximum dispersion span. The dispersion compensation amounts of the first and second dispersion compensators are such that, when the dispersion compensation amount of the maximum dispersion span in which the first and second dispersion compensators are arranged is successively increased, the span has a residual dispersion value equal to or higher than a fixed range and the maximum dispersion route which relates to the spans has a residual dispersion value which satisfies the dispersion tolerance or the span has a residual dispersion value which is within the fixed range.
摘要翻译： 光传输网络包括布置在具有最大色散值的最大色散跨度中的第一色散补偿器，并且从在非再生间隔的路径内具有最大色散值的最大色散路径内搜索出的第一色散补偿器，其中色散补偿之前的色散值 不满足色散公差的上限，并且在色散补偿器连续地从路径中具有最大色散值的最大色散路径中搜索出的具有最大色散值的最大色散范围内的第二色散补偿器 排列直到某个通道的色散值不满足色散容限的非再生间隔的路径基于相对于搜索出的最大色散跨度的色散补偿之后的色散值不再存在。 第一和第二色散补偿器的色散补偿量使得当排列第一和第二色散补偿器的最大色散跨度的色散补偿量依次增加时，跨度具有等于或等于更高的残余色散值 与固定范围相关联的最大色散路径与跨度相关的最大色散路径具有满足色散公差或跨度的残留色散值具有在固定范围内的残留色散值。
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4.发明申请公开(公告)号：US20050175279A1
公开(公告)日：2005-08-11
申请号：US11101518
申请日：2005-04-08
IPC分类号： H04B10/2507 , H04B10/07 , H04B10/2525 , H04B10/27 , H04B10/275 , H04B10/29 , H04J14/00 , H04J14/02 , G02B6/28
CPC分类号： H04B10/25253
摘要： An optical transmission network includes a first dispersion compensator arranged in a maximum dispersion span having a maximum dispersion value and searched out from within a maximum dispersion route having a maximum dispersion value from among routes of non-regeneration intervals within which a dispersion value before dispersion compensation does not satisfy an upper limit of a dispersion tolerance, and a second dispersion compensator arranged in a maximum dispersion span having a maximum dispersion value searched out from within a maximum dispersion route having a maximum dispersion value from among the routes when a dispersion compensator is successively arranged until a route of a non-regeneration interval within which a dispersion value of a certain channel does not satisfy the dispersion tolerance does not remain any more based on the dispersion value after the dispersion compensation with respect to the searched out maximum dispersion span. The dispersion compensation amounts of the first and second dispersion compensators are such that, when the dispersion compensation amount of the maximum dispersion span in which the first and second dispersion compensators are arranged is successively increased, the span has a residual dispersion value equal to or higher than a fixed range and the maximum dispersion route which relates to the spans has a residual dispersion value which satisfies the dispersion tolerance or the span has a residual dispersion value which is within the fixed range.
摘要翻译： 光传输网络包括布置在具有最大色散值的最大色散跨度中的第一色散补偿器，并且从在非再生间隔的路径内具有最大色散值的最大色散路径内搜索出的第一色散补偿器，其中色散补偿之前的色散值 不满足色散公差的上限，并且在色散补偿器连续地从线路中具有最大色散值的最大色散路径中搜索出的具有最大色散值的最大色散范围内的第二色散补偿器 排列直到某个通道的色散值不满足色散容限的非再生间隔的路径基于相对于搜索出的最大色散跨度的色散补偿之后的色散值不再存在。 第一和第二色散补偿器的色散补偿量使得当排列第一和第二色散补偿器的最大色散跨度的色散补偿量依次增加时，跨度具有等于或等于更高的残余色散值 与固定范围相关联的最大色散路径与跨度相关的最大色散路径具有满足色散公差或跨度的残留色散值具有在固定范围内的残留色散值。
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公开(公告)号：US07756422B2
公开(公告)日：2010-07-13
申请号：US11502535
申请日：2006-08-11
申请人： Takeshi Sakamoto , Kosuke Komaki , Yuji Shimada , Takuji Maeda
发明人： Takeshi Sakamoto , Kosuke Komaki , Yuji Shimada , Takuji Maeda
IPC分类号： H04B10/00
CPC分类号： H04B10/07
摘要： During initial start-up of an optical communication system, an ASE reference span loss is calculated based on transmitting power and received power of ASE light generated by an optical amplifier, and an OSC reference span loss is calculated based on the transmitting power and the received power of OSC light. During normal operation of the optical communication system, a span loss is calculated using the OSC light, and an amount of change in the span loss representing a difference between the span loss and the OSC reference span loss is calculated. A current span loss between a transmitting station and a receiving station is calculated by adding the amount of change in the span loss to the ASE reference span loss.
摘要翻译： 在光通信系统的初始启动期间，基于由光放大器产生的ASE光的发射功率和接收功率来计算ASE参考跨度损耗，并且基于发射功率和接收到的功率来计算OSC参考跨度损耗 OSC灯的功率。 在光通信系统的正常工作期间，使用OSC灯计算跨度损耗，并且计算表示跨度损耗与OSC参考跨度损耗之间的差异的跨度损耗的变化量。 通过将跨度损耗的变化量与ASE参考跨度损耗相加来计算发送站和接收站之间的电流跨度损耗。
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公开(公告)号：US20070217794A1
公开(公告)日：2007-09-20
申请号：US11502535
申请日：2006-08-11
申请人： Takeshi Sakamoto , Kosuke Komaki , Yuji Shimada , Takuji Maeda
发明人： Takeshi Sakamoto , Kosuke Komaki , Yuji Shimada , Takuji Maeda
IPC分类号： H04B10/00
CPC分类号： H04B10/07
摘要： During initial start-up of an optical communication system, an ASE reference span loss is calculated based on transmitting power and received power of ASE light generated by an optical amplifier, and an OSC reference span loss is calculated based on the transmitting power and the received power of OSC light. During normal operation of the optical communication system, a span loss is calculated using the OSC light, and an amount of change in the span loss representing a difference between the span loss and the OSC reference span loss is calculated. A current span loss between a transmitting station and a receiving station is calculated by adding the amount of change in the span loss to the ASE reference span loss.
摘要翻译： 在光通信系统的初始启动期间，基于由光放大器产生的ASE光的发射功率和接收功率来计算ASE参考跨度损耗，并且基于发射功率和接收到的功率来计算OSC参考跨度损耗 OSC灯的功率。 在光通信系统的正常工作期间，使用OSC灯计算跨度损耗，并且计算表示跨度损耗与OSC参考跨度损耗之间的差异的跨度损耗的变化量。 通过将跨度损耗的变化量与ASE参考跨度损耗相加来计算发送站和接收站之间的电流跨度损耗。
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7.发明授权公开(公告)号：US06411429B1
公开(公告)日：2002-06-25
申请号：US09667433
申请日：2000-09-22
申请人： Hiroaki Tomofuji , Motoyoshi Sekiya , Takeshi Sakamoto , Makoto Murakami , Chihiro Ohshima , Yoshihito Onoda
发明人： Hiroaki Tomofuji , Motoyoshi Sekiya , Takeshi Sakamoto , Makoto Murakami , Chihiro Ohshima , Yoshihito Onoda
IPC分类号： H01S300
CPC分类号： H04B10/296 , H01S3/067 , H01S3/06758 , H04B10/2931 , H04B2210/258
摘要： An optical amplifying apparatus for widening the input dynamic range and lowering noises. The optical amplifying apparatus comprises a first optical amplifier, an optical attenuator, a second optical amplifier and a controller. The first optical amplifier changes the target value of output light when the variance amount of input light reaches a predetermined value. The controller changes the attenuation amount of attenuator in accordance with a difference between the target value and the changed target value of the output light level of the first optical amplifier, when the target value of the output light level of the first optical amplifier is changed.
摘要翻译： 一种用于扩大输入动态范围并降低噪声的光学放大装置。 光放大装置包括第一光放大器，光衰减器，第二光放大器和控制器。 当输入光的变化量达到预定值时，第一光学放大器改变输出光的目标值。 当第一光放大器的输出光电平的目标值改变时，控制器根据目标值与第一光放大器的输出光电平的改变的目标值之间的差异来改变衰减器的衰减量。
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8.发明授权公开(公告)号：US06570703B2
公开(公告)日：2003-05-27
申请号：US09968892
申请日：2001-10-03
申请人： Makoto Murakami , Motoyoshi Sekiya , Hideto Saito , Hiroaki Tomofuji , Takeshi Sakamoto , Kazuo Yamane
发明人： Makoto Murakami , Motoyoshi Sekiya , Hideto Saito , Hiroaki Tomofuji , Takeshi Sakamoto , Kazuo Yamane
IPC分类号： H04B1008
CPC分类号： H04B10/296 , H01S3/06758 , H01S3/094011 , H01S3/10015 , H01S2301/02 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0209 , H04J14/0213 , H04J14/0221
摘要： An optical amplifying apparatus of the present invention comprises a correction part for correcting a predetermined fixed value of an output optical level by a correction amount according to an optical power of amplified spontaneous emission (ASE). The correction amount is, for example, computed by predetermined formulas. According to the present invention, when a WDM optical signal is optically amplified, the output is fixedly amplified for each channel by the correction amount which is a value obtained with the ASE levels taken into consideration, so that a fluctuation in the level of the average optical power of the channels is suppressed even if an optical signal is dropped/added therefrom/thereto during repeated transmissions.
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9.发明授权Method and apparatus for measuring optical signal-to-noise ratio, and pre-emphasis method and optical communication system each utilizing the method 有权用于测量光信噪比的方法和装置，以及每个利用该方法的预加重方法和光通信系统公开(公告)号：US06654561B1
公开(公告)日：2003-11-25
申请号：US09699479
申请日：2000-10-31
申请人： Takafumi Terahara , Takeshi Sakamoto , Hiroaki Tomofuji , Motoyoshi Sekiya , Makoto Murakami , Kazuo Yamane , Hiroshi Onaka
发明人： Takafumi Terahara , Takeshi Sakamoto , Hiroaki Tomofuji , Motoyoshi Sekiya , Makoto Murakami , Kazuo Yamane , Hiroshi Onaka
IPC分类号： H04B1008
CPC分类号： H04B10/07953 , H04B10/0799
摘要： In a method of measuring an optical signal-to-noise ratio according to the present invention, a partial optical signal-to-noise ratio is defined, the partial optical signal-to-noise ratio is calculated from a predetermined physical quantity, the sum of inverse numbers of the partial optical signal-to-noise ratios is calculated, and further an inverse number of the sum is calculated to acquire an optical signal-to-noise ratio. The present invention makes it possible to measure optical SNR without directly measuring ASE in the optical signal. The present invention provides a measuring apparatus, a measuring circuit, a pre-emphasis method, an optical communication system, and a controlling apparatus each utilizing this method.
摘要翻译： 在根据本发明的测量光信噪比的方法中，定义部分光信噪比，从预定物理量计算部分光信噪比，总和 计算出部分光信噪比的逆数，并且进一步计算和的逆数以获得光信噪比。 本发明使得可以在光信号中不直接测量ASE来测量光信噪比。 本发明提供一种使用该方法的测量装置，测量电路，预加重方法，光通信系统和控制装置。
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公开(公告)号：US09903009B2
公开(公告)日：2018-02-27
申请号：US13352172
申请日：2012-01-17
申请人： Masashi Miwa , Takeshi Sakamoto , Jun Hagiwara , Masami Mori
发明人： Masashi Miwa , Takeshi Sakamoto , Jun Hagiwara , Masami Mori
IPC分类号： C22C33/02 , H01F41/02 , H01F1/057 , C09D5/08 , C23C22/18 , C23C22/42 , C23C22/73 , C23C22/74 , B22F3/24 , B22F9/04
CPC分类号： C22C33/0278 , B22F2003/248 , B22F2009/041 , B22F2009/043 , B22F2009/044 , B22F2998/10 , B22F2999/00 , C09D5/08 , C23C22/18 , C23C22/42 , C23C22/73 , C23C22/74 , H01F1/0572 , H01F1/0577 , H01F41/026 , Y10T428/26 , Y10T428/31678 , B22F9/04 , B22F3/02 , B22F3/10 , B22F3/24 , B22F2202/05 , B22F2201/10 , B22F2201/20
摘要： A rare-earth element including a magnet body containing a rare-earth element, and a protective layer formed on a surface of the magnet body. The protective layer may include a first layer covering the magnet body and containing a rare-earth element, and a second layer covering the first layer and containing substantially no rare-earth element. Another protective layer in accordance may include an inner protective layer and an outer protective layer successively from the magnet body side. The outer protective layer is any of an oxide layer, a resin layer, a metal salt layer, and a layer containing an organic-inorganic hybrid compound.
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