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1.发明授权System for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber 有权用于测量光纤的波长色散和非线性系数的系统公开(公告)号：US07424191B2
公开(公告)日：2008-09-09
申请号：US11580473
申请日：2006-10-13
申请人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
发明人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
CPC分类号： G01M11/3172 , G01M11/31 , G01M11/3181 , G01M11/319 , G01M11/39
摘要： A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light of the probe light or idler light generated within the optical fiber is measured. Next, the instantaneous frequency of the measured power oscillation is obtained, and the dependency of the instantaneous frequency relative to the power oscillation of the pump light in a longitudinal direction of the optical fiber is obtained. Thereafter, a rate of change in the longitudinal direction between phase-mismatching conditions and nonlinear coefficient of the optical fiber is obtained from the dependency of the instantaneous frequency. And based on the rate of change, the longitudinal wavelength-dispersion distribution and longitudinal nonlinear-coefficient distribution of the optical fiber are simultaneously specified.
摘要翻译： 一种同时指定光纤的波长色散和非线性系数的方法。 首先引入脉冲探头光和脉冲泵浦光，进入要测量的光纤。 然后，测量在光纤内产生的探测光或空载光的背散射光的功率振荡。 接下来，获得测量的功率振荡的瞬时频率，并且获得瞬时频率相对于光纤在纵向方向上的功率振荡的依赖性。 此后，根据瞬时频率的依赖性，获得相位不匹配条件和光纤的非线性系数之间的纵向变化率。 并且基于变化率，同时规定了光纤的纵向波长色散分布和纵向非线性系数分布。
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2.发明申请Method and system for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber, method of manufacturing optical fibers, method of measuring wavelength-dispersion distribution, method of compensating for measurement errors, and method of specifying conditions of measurement 有权用于测量光纤的波长色散和非线性系数的方法和系统，制造光纤的方法，测量波长色散分布的方法，补偿测量误差的方法以及指定测量条件的方法公开(公告)号：US20050058417A1
公开(公告)日：2005-03-17
申请号：US10832875
申请日：2004-04-27
申请人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
发明人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
CPC分类号： G01M11/3172 , G01M11/31 , G01M11/3181 , G01M11/319 , G01M11/39
摘要： A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light of the probe light or idler light generated within the optical fiber is measured. Next, the instantaneous frequency of the measured power oscillation is obtained, and the dependency of the instantaneous frequency relative to the power oscillation of the pump light in a longitudinal direction of the optical fiber is obtained. Thereafter, a rate of change in the longitudinal direction between phase-mismatching conditions and nonlinear coefficient of the optical fiber is obtained from the dependency of the instantaneous frequency. And based on the rate of change, the longitudinal wavelength-dispersion distribution and longitudinal nonlinear-coefficient distribution of thee optical fiber are simultaneously specified.
摘要翻译： 一种同时指定光纤的波长色散和非线性系数的方法。 首先引入脉冲探头光和脉冲泵浦光，进入要测量的光纤。 然后，测量在光纤内产生的探测光或空载光的背散射光的功率振荡。 接下来，获得测量的功率振荡的瞬时频率，并且获得瞬时频率相对于光纤在纵向方向上的功率振荡的依赖性。 此后，根据瞬时频率的依赖性，获得相位不匹配条件和光纤的非线性系数之间的纵向变化率。 并根据变化率，同时规定了光纤的纵向波长色散分布和纵向非线性系数分布。
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3.发明申请System for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber 有权用于测量光纤的波长色散和非线性系数的系统公开(公告)号：US20070035722A1
公开(公告)日：2007-02-15
申请号：US11580473
申请日：2006-10-13
申请人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
发明人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
IPC分类号： G01N21/00
CPC分类号： G01M11/3172 , G01M11/31 , G01M11/3181 , G01M11/319 , G01M11/39
摘要： A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light of the probe light or idler light generated within the optical fiber is measured. Next, the instantaneous frequency of the measured power oscillation is obtained, and the dependency of the instantaneous frequency relative to the power oscillation of the pump light in a longitudinal direction of the optical fiber is obtained. Thereafter, a rate of change in the longitudinal direction between phase-mismatching conditions and nonlinear coefficient of the optical fiber is obtained from the dependency of the instantaneous frequency. And based on the rate of change, the longitudinal wavelength-dispersion distribution and longitudinal nonlinear-coefficient distribution of the optical fiber are simultaneously specified.
摘要翻译： 一种同时指定光纤的波长色散和非线性系数的方法。 首先引入脉冲探头光和脉冲泵浦光，进入要测量的光纤。 然后，测量在光纤内产生的探测光或空载光的背散射光的功率振荡。 接下来，获得测量的功率振荡的瞬时频率，并且获得瞬时频率相对于光纤在纵向方向上的功率振荡的依赖性。 此后，根据瞬时频率的依赖性，获得相位不匹配条件和光纤的非线性系数之间的纵向变化率。 并且基于变化率，同时规定了光纤的纵向波长色散分布和纵向非线性系数分布。
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4.发明申请SYSTEM FOR MEASURING THE WAVELENGTH DISPERSION AND NONLINEAR COEFFICIENT OF AN OPTICAL FIBER 有权用于测量光纤的波长分散度和非线性系数的系统公开(公告)号：US20080225276A1
公开(公告)日：2008-09-18
申请号：US12029626
申请日：2008-02-12
申请人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
发明人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
IPC分类号： G01N21/00
CPC分类号： G01M11/3172 , G01M11/31 , G01M11/3181 , G01M11/319 , G01M11/39
摘要： A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light of the probe light or idler light generated within the optical fiber is measured. Next, the instantaneous frequency of the measured power oscillation is obtained, and the dependency of the instantaneous frequency relative to the power oscillation of the pump light in a longitudinal direction of the optical fiber is obtained. Thereafter, a rate of change in the longitudinal direction between phase-mismatching conditions and nonlinear coefficient of the optical fiber is obtained from the dependency of the instantaneous frequency. And based on the rate of change, the longitudinal wavelength-dispersion distribution and longitudinal nonlinear-coefficient distribution of the optical fiber are simultaneously specified.
摘要翻译： 一种同时指定光纤的波长色散和非线性系数的方法。 首先引入脉冲探头光和脉冲泵浦光，进入要测量的光纤。 然后，测量在光纤内产生的探测光或空载光的背散射光的功率振荡。 接下来，获得测量的功率振荡的瞬时频率，并且获得瞬时频率相对于光纤在纵向方向上的功率振荡的依赖性。 此后，根据瞬时频率的依赖性，获得相位不匹配条件和光纤的非线性系数之间的纵向变化率。 并且基于变化率，同时规定了光纤的纵向波长色散分布和纵向非线性系数分布。
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5.发明授权Method and system for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber, method of manufacturing optical fibers, method of measuring wavelength-dispersion distribution, method of compensating for measurement errors, and method of specifying conditions of measurement 有权用于测量光纤的波长色散和非线性系数的方法和系统，光纤的制造方法，测量波长色散分布的方法，补偿测量误差的方法以及指定测量条件的方法公开(公告)号：US07003202B2
公开(公告)日：2006-02-21
申请号：US10832875
申请日：2004-04-27
申请人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
发明人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
IPC分类号： G01N21/00
CPC分类号： G01M11/3172 , G01M11/31 , G01M11/3181 , G01M11/319 , G01M11/39
摘要： A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light of the probe light or idler light generated within the optical fiber is measured. Next, the instantaneous frequency of the measured power oscillation is obtained, and the dependency of the instantaneous frequency relative to the power oscillation of the pump light in a longitudinal direction of the optical fiber is obtained. Thereafter, a rate of change in the longitudinal direction between phase-mismatching conditions and nonlinear coefficient of the optical fiber is obtained from the dependency of the instantaneous frequency. And based on the rate of change, the longitudinal wavelength-dispersion distribution and longitudinal nonlinear-coefficient distribution of thee optical fiber are simultaneously specified.
摘要翻译： 一种同时指定光纤的波长色散和非线性系数的方法。 首先引入脉冲探头光和脉冲泵浦光，进入要测量的光纤。 然后，测量在光纤内产生的探测光或空载光的背散射光的功率振荡。 接下来，获得测量的功率振荡的瞬时频率，并且获得瞬时频率相对于光纤在纵向方向上的功率振荡的依赖性。 此后，根据瞬时频率的依赖性，获得相位不匹配条件和光纤的非线性系数之间的纵向变化率。 并根据变化率，同时规定了光纤的纵向波长色散分布和纵向非线性系数分布。
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公开(公告)号：US20060029342A1
公开(公告)日：2006-02-09
申请号：US11249808
申请日：2005-10-13
申请人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
发明人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
IPC分类号： G02B6/00
CPC分类号： G01M11/3172 , G01M11/31 , G01M11/3181 , G01M11/319 , G01M11/39
摘要： A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light of the probe light or idler light generated within the optical fiber is measured. Next, the instantaneous frequency of the measured power oscillation is obtained, and the dependency of the instantaneous frequency relative to the power oscillation of the pump light in a longitudinal direction of the optical fiber is obtained. Thereafter, a rate of change in the longitudinal direction between phase-mismatching conditions and nonlinear coefficient of the optical fiber is obtained from the dependency of the instantaneous frequency. And based on the rate of change, the longitudinal wavelength-dispersion distribution and longitudinal nonlinear-coefficient distribution of the optical fiber are simultaneously specified.
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7.发明授权Method and system for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber, method of manufacturing optical fibers, method of measuring wavelength-dispersion distribution, method of compensating for measurement errors, and method of specifying conditions of measurement 有权用于测量光纤的波长色散和非线性系数的方法和系统，光纤的制造方法，测量波长色散分布的方法，补偿测量误差的方法以及指定测量条件的方法公开(公告)号：US07146085B2
公开(公告)日：2006-12-05
申请号：US11249808
申请日：2005-10-13
申请人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
发明人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
CPC分类号： G01M11/3172 , G01M11/31 , G01M11/3181 , G01M11/319 , G01M11/39
摘要： A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light of the probe light or idler light generated within the optical fiber is measured. Next, the instantaneous frequency of the measured power oscillation is obtained, and the dependency of the instantaneous frequency relative to the power oscillation of the pump light in a longitudinal direction of the optical fiber is obtained. Thereafter, a rate of change in the longitudinal direction between phase-mismatching conditions and nonlinear coefficient of the optical fiber is obtained from the dependency of the instantaneous frequency. And based on the rate of change, the longitudinal wavelength-dispersion distribution and longitudinal nonlinear-coefficient distribution of the optical fiber are simultaneously specified.
摘要翻译： 一种同时指定光纤的波长色散和非线性系数的方法。 首先引入脉冲探头光和脉冲泵浦光，进入要测量的光纤。 然后，测量在光纤内产生的探测光或空载光的背散射光的功率振荡。 接下来，获得测量的功率振荡的瞬时频率，并且获得瞬时频率相对于光纤在纵向方向上的功率振荡的依赖性。 此后，根据瞬时频率的依赖性，获得相位不匹配条件和光纤的非线性系数之间的纵向变化率。 并且基于变化率，同时规定了光纤的纵向波长色散分布和纵向非线性系数分布。
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8.发明授权System for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber 有权用于测量光纤的波长色散和非线性系数的系统公开(公告)号：US07869014B2
公开(公告)日：2011-01-11
申请号：US12029626
申请日：2008-02-12
申请人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
发明人： Masateru Tadakuma , Yu Mimura , Misao Sakano , Osamu Aso , Takeshi Nakajima , Katsutoshi Takahashi
IPC分类号： G01N21/00
CPC分类号： G01M11/3172 , G01M11/31 , G01M11/3181 , G01M11/319 , G01M11/39
摘要： A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light of the probe light or idler light generated within the optical fiber is measured. Next, the instantaneous frequency of the measured power oscillation is obtained, and the dependency of the instantaneous frequency relative to the power oscillation of the pump light in a longitudinal direction of the optical fiber is obtained. Thereafter, a rate of change in the longitudinal direction between phase-mismatching conditions and nonlinear coefficient of the optical fiber is obtained from the dependency of the instantaneous frequency. And based on the rate of change, the longitudinal wavelength-dispersion distribution and longitudinal nonlinear-coefficient distribution of the optical fiber are simultaneously specified.
摘要翻译： 一种同时指定光纤的波长色散和非线性系数的方法。 首先引入脉冲探头光和脉冲泵浦光，进入要测量的光纤。 然后，测量在光纤内产生的探测光或空载光的背散射光的功率振荡。 接下来，获得测量的功率振荡的瞬时频率，并且获得瞬时频率相对于光纤在纵向方向上的功率振荡的依赖性。 此后，根据瞬时频率的依赖性，获得相位不匹配条件和光纤的非线性系数之间的纵向变化率。 并且基于变化率，同时规定了光纤的纵向波长色散分布和纵向非线性系数分布。
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公开(公告)号：US20060193032A1
公开(公告)日：2006-08-31
申请号：US11407141
申请日：2006-04-20
申请人： Osamu Aso , Shunichi Matushita , Misao Sakano , Masateru Tadakuma
发明人： Osamu Aso , Shunichi Matushita , Misao Sakano , Masateru Tadakuma
IPC分类号： G02F2/02
CPC分类号： G02F1/3536 , G02F2/004 , G02F2201/16 , G02F2203/58 , H01S5/041 , H01S5/50 , H01S5/5054 , H04B10/29 , H04B10/505 , H04B10/506 , H04B10/572 , H04J14/02
摘要： A multi-frequency light producing method and apparatus multiplies the number of optical channels present in an incident wavelength division multiplexed (WDM) signal light source by four-wave mixing (FWM) the WDM signal with at least one pump lightwave at least one time. By FWM the WDM light and a pump lightwave multiple times, wherein each FWM process is executed with a pump lightwave having a different frequency, either in series or parallel, the number of optical channels produced as a result of FWM effectively increases the number of optical channels present in addition to those from the WDM signal. The light producing method and apparatus can be employed in a telecommunications system as a an inexpensive light source producing a plurality of optical frequencies.
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公开(公告)号：US07408701B2
公开(公告)日：2008-08-05
申请号：US11407141
申请日：2006-04-20
申请人： Osamu Aso , Shunichi Matushita , Misao Sakano , Masateru Tadakuma
发明人： Osamu Aso , Shunichi Matushita , Misao Sakano , Masateru Tadakuma
CPC分类号： G02F1/3536 , G02F2/004 , G02F2201/16 , G02F2203/58 , H01S5/041 , H01S5/50 , H01S5/5054 , H04B10/29 , H04B10/505 , H04B10/506 , H04B10/572 , H04J14/02
摘要： A multi-frequency light producing method and apparatus multiplies the number of optical channels present in an incident wavelength division multiplexed (WDM) signal light source by four-wave mixing (FWM) the WDM signal with at least one pump lightwave at least one time. By FWM the WDM light and a pump lightwave multiple times, wherein each FWM process is executed with a pump lightwave having a different frequency, either in series or parallel, the number of optical channels produced as a result of FWM effectively increases the number of optical channels present in addition to those from the WDM signal. The light producing method and apparatus can be employed in a telecommunications system as a an inexpensive light source producing a plurality of optical frequencies.
摘要翻译： 多频光产生方法和装置通过四波混频（FWM）将入射波分复用（WDM）信号光源中存在的光通道的数量与至少一个泵浦光波至少一次相乘。 通过FWM WDM光和泵浦光波多次，其中每个FWM处理都是以具有不同频率的泵浦光波串联或并联执行的，由FWM产生的光通道数量有效地增加了光学数 除了来自WDM信号的信道之外还存在通道。 该光产生方法和装置可以用在电信系统中，作为产生多个光频率的廉价光源。
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