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公开(公告)号：US08498045B2
公开(公告)日：2013-07-30
申请号：US12878253
申请日：2010-09-09
申请人： Tomoaki Takeyama
发明人： Tomoaki Takeyama
IPC分类号： H01S3/0915 , H01S3/094 , H01S3/067
CPC分类号： H01S3/094023 , H01S3/005 , H01S3/0078 , H01S3/06712 , H01S3/06754 , H01S3/06766 , H01S3/094003 , H01S3/09415 , H01S3/1608 , H01S2301/02 , H04B10/294
摘要： An optical amplifier includes a rare-earth doped optical fiber for receiving input light through one end and outputting output light through another end, the input light being input from an input port; an excitation light source for generating excitation light; an optical coupler for supplying the generated excitation light to the one end and/or the another end of the rare-earth doped optical fiber; and a reflector for reflecting an amplified spontaneous emission light out of a signal band traveling in opposite direction to the input light, the amplified spontaneous emission light being generated in the rare-earth doped optical fiber.
摘要翻译： 光放大器包括：稀土掺杂光纤，用于通过一端接收输入光，并通过另一端输出输出光，输入光从输入端口输入; 用于产生激发光的激发光源; 用于将产生的激发光提供给稀土掺杂光纤的一端和/或另一端的光耦合器; 以及反射器，用于从与输入光相反的方向行进的信号带反射放大的自发发射光，在稀土掺杂光纤中产生放大的自发发射光。
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公开(公告)号：US08351112B2
公开(公告)日：2013-01-08
申请号：US13017176
申请日：2011-01-31
申请人： Tomoaki Takeyama
发明人： Tomoaki Takeyama
IPC分类号： H01S3/00
CPC分类号： H01S3/06758 , H01S3/1305 , H04B10/2941 , H04B10/296
摘要： An optical amplifier includes a first amplification medium to receive light obtained by combining signal light input into an input port and the excitation light generated by a light source; a second amplification medium disposed between the first amplification medium and an output port; a loss medium to receive the signal light separated from light output from the first amplification medium; a variable optical attenuator that is disposed on a path that bypasses the loss medium, and to receive the excitation light separated from the light output from the first amplification medium; a first photodetector to detect power of light separated from the signal light transmitted from the second amplification medium; and a controller to control the amount of attenuation for the variable optical attenuator or output power of the light source so that signal light power per wavelength of the signal light becomes closer to a target value.
摘要翻译： 光放大器包括：第一放大介质，用于接收通过将输入到输入端口的信号光与由光源产生的激发光组合而获得的光; 布置在第一放大介质和输出端口之间的第二放大介质; 用于接收与从第一放大介质输出的光分离的信号光的损耗介质; 可变光衰减器，其设置在绕过所述损耗介质的路径上，并接收与从所述第一放大介质输出的光分离的激发光; 第一光电检测器，用于检测与从第二放大介质传输的信号光分离的光的功率; 以及控制器，用于控制可变光衰减器的衰减量或光源的输出功率，使得信号光的每个波长的信号光功率变得更接近目标值。
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公开(公告)号：US08194309B2
公开(公告)日：2012-06-05
申请号：US11586604
申请日：2006-10-26
CPC分类号： H04B10/2941 , H01S3/0064 , H01S3/06708 , H01S3/0672 , H01S3/06729 , H01S3/06758 , H01S3/0677 , H01S3/094003 , H01S3/094023 , H01S3/0941 , H01S3/1301 , H01S3/1305 , H01S3/1608 , H01S2301/02
摘要： The present invention has an object to provide an optical amplifier capable of realizing a good response characteristic in a wide frequency band, even when a population inversion state is formed by a pumping light supplied to an optical amplification medium and an ASE light generated in the optical amplification medium. To this end, in the optical amplifier according to the present invention, a delayed phase matching fiber in which a first fiber whose response speed is relatively low is arranged on the input side and a second fiber whose response speed is relatively high is arranged on the output side, is used as the optical amplification medium doped with a rare-earth element.
摘要翻译： 本发明的目的是提供一种能够在宽频带中实现良好的响应特性的光放大器，即使当通过提供给光放大介质的泵浦光和在光学放大器中产生的ASE光形成群体反转状态时 扩增介质。 为此，在根据本发明的光放大器中，延迟相位匹配光纤，其中响应速度相对较低的第一光纤被布置在输入侧，并且响应速度相对较高的第二光纤被布置在 输出侧用作掺杂有稀土元素的光放大介质。
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14.发明申请OPTICAL AMPLIFYING DEVICE, GAIN CONTROL METHOD, OPTICAL TRANSMISSION DEVICE, AND GAIN CONTROL DEVICE 有权光学放大装置，增益控制方法，光传输装置和增益控制装置公开(公告)号：US20110228381A1
公开(公告)日：2011-09-22
申请号：US13042545
申请日：2011-03-08
申请人： Tomoaki TAKEYAMA
发明人： Tomoaki TAKEYAMA
IPC分类号： H01S3/00
CPC分类号： H01S3/10015 , H01S3/06754 , H01S3/1301 , H01S3/1608 , H01S2301/06 , H04B10/07955 , H04B10/2942 , H04J14/0204 , H04J14/0212 , H04J14/0221 , H04J14/0227 , H04J14/0257 , H04J14/0258
摘要： An apparatus includes: an optical amplifier configured to perform optical amplification for gain by controlling so as to be a target gain; a correction power calculator configured to calculate, in response to amplified spontaneous emission light input to the optical amplifier, correction power corresponding to an amount of gain depression in a bandwidth in which spectral hole-burning occurs in the optical amplifier; and a gain controller configured to calculate, using the correction power calculated in the correction power calculator, a gain for controlling the optical amplification performed in the optical amplifier and perform, using the calculated gain, a control operation so that the gain of the optical amplification becomes the target gain.
摘要翻译： 一种装置，包括：光放大器，被配置为通过控制成为目标增益来执行增益的光放大; 校正功率计算器，被配置为响应于输入到所述光放大器的放大的自发发射光来计算对应于在所述光放大器中发生频谱空穴燃烧的带宽中的增益下降量的校正功率; 以及增益控制器，被配置为使用在校正功率计算器中计算的校正功率来计算用于控制在光放大器中执行的光放大的增益，并且使用所计算的增益执行控制操作，使得光放大的增益 成为目标收益。
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公开(公告)号：US20110063721A1
公开(公告)日：2011-03-17
申请号：US12861011
申请日：2010-08-23
申请人： Tomoaki TAKEYAMA
发明人： Tomoaki TAKEYAMA
CPC分类号： H01S3/06758 , H01S3/10015 , H01S3/1301 , H01S3/131 , H01S3/1608 , H01S2301/02 , H01S2301/04 , H04B10/2931
摘要： There is provided an optical amplifier including a pump light source to generate a pump light being capable of changing a wavelength thereof, a first rare earth doped medium to amplify an input signal light by using the pump light generated by the pump light source, a second rare earth doped medium to amplify the input signal light output from the first rare earth doped medium by using a residual pump light that is a portion of the pump light generated by the pump light source, and a wavelength controller to control a wavelength of the pump light generated by the pump light source, based on an input level of the input signal light.
摘要翻译： 提供一种光放大器，包括泵浦光源，以产生能够改变其波长的泵浦光;第一稀土掺杂介质，通过使用由泵浦光源产生的泵浦光放大输入信号光;第二稀土掺杂介质 稀土掺杂介质，通过使用由泵浦光源产生的泵浦光的一部分的残留泵浦光来放大从第一稀土掺杂介质输出的输入信号光;以及波长控制器，用于控制泵的波长 由泵浦光源产生的光，基于输入信号光的输入电平。
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公开(公告)号：US20100245988A1
公开(公告)日：2010-09-30
申请号：US12692591
申请日：2010-01-23
申请人： Tomoaki TAKEYAMA , Keiko Sasaki , Shinichirou Muro
发明人： Tomoaki TAKEYAMA , Keiko Sasaki , Shinichirou Muro
IPC分类号： H01S3/00
CPC分类号： H01S3/06758 , H01S3/094011 , H01S3/10015 , H01S3/1301 , H01S2301/04
摘要： An optical amplifier includes a first excitation light source that outputs a first excitation light; a second excitation light source that outputs a second excitation light; a first amplifying optical fiber doped with a rare-earth element and excited by the first excitation light to amplify light input to the first amplifying optical fiber; and a second amplifying optical fiber doped with a rare-earth element and excited by the second excitation light to amplify the light from the first amplifying optical fiber. A ratio between the intensity of the first excitation light and the intensity of the second excitation light is controlled according to the number of signal lights wavelength-multiplexed in the light input.
摘要翻译： 光放大器包括：第一激发光源，其输出第一激发光; 输出第二激发光的第二激发光源; 掺杂有稀土元素并被第一激发光激发以放大输入到第一放大光纤的光的第一放大光纤; 以及掺杂有稀土元素并被第二激发光激发以放大来自第一放大光纤的光的第二放大光纤。 根据在光输入中波长多路复用的信号光的数量来控制第一激发光的强度与第二激发光的强度之比。
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公开(公告)号：US20080074731A1
公开(公告)日：2008-03-27
申请号：US11845335
申请日：2007-08-27
申请人： Tomoaki Takeyama , Keiko Sasaki , Shinichirou Muro
发明人： Tomoaki Takeyama , Keiko Sasaki , Shinichirou Muro
IPC分类号： H01S3/00
CPC分类号： H01S3/06758 , H01S3/10015 , H01S3/1305 , H01S3/2316
摘要： An optical amplifier reducing gain deviation caused by wavelength arrangement has a first-stage optical amplifying unit, an attenuator, a second-stage optical amplifying unit, an automatic gain controller controlling the first- and second-stage optical amplifying units so that a gain of signal light outputted from the second-stage optical amplifying unit to signal light inputted to the first-stage optical amplifying unit is constant, and an attenuation amount controller controlling an attenuation amount at the attenuator to adjust gain-versus-wavelength characteristic at the automatic-gain-controlled first- and second-stage optical amplifying units on the basis of information on wavelength arrangement and an input level of the signal light inputted to the first-stage optical amplifying unit so that gain slope characteristic at the first- and second-stage optical amplifying units due to the wavelength arrangement and the input level is flattened.
摘要翻译： 降低由波长配置引起的增益偏差的光放大器具有第一级光放大单元，衰减器，第二级光放大单元，控制第一级和第二级光放大单元的自动增益控制器， 从第二级光放大单元输出的信号光信号是恒定的，并且衰减量控制器控制衰减器处的衰减量，以调节自动 - 基于波长配置的信息和输入到第一级光放大单元的信号光的输入电平，使得增益控制的第一级和第二级光放大单元在第一级和第二级的增益斜率特性 由于波长布置和输入电平而导致的光放大单元变平。
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公开(公告)号：US20070041084A1
公开(公告)日：2007-02-22
申请号：US11586604
申请日：2006-10-26
CPC分类号： H04B10/2941 , H01S3/0064 , H01S3/06708 , H01S3/0672 , H01S3/06729 , H01S3/06758 , H01S3/0677 , H01S3/094003 , H01S3/094023 , H01S3/0941 , H01S3/1301 , H01S3/1305 , H01S3/1608 , H01S2301/02
摘要： The present invention has an object to provide an optical amplifier capable of realizing a good response characteristic in a wide frequency band, even when a population inversion state is formed by a pumping light supplied to an optical amplification medium and an ASE light generated in the optical amplification medium. To this end, in the optical amplifier according to the present invention, a delayed phase matching fiber in which a first fiber whose response speed is relatively low is arranged on the input side and a second fiber whose response speed is relatively high is arranged on the output side, is used as the optical amplification medium doped with a rare-earth element.
摘要翻译： 本发明的目的是提供一种能够在宽频带中实现良好的响应特性的光放大器，即使当通过提供给光放大介质的泵浦光和在光学放大器中产生的ASE光形成群体反转状态时 扩增介质。 为此，在根据本发明的光放大器中，延迟相位匹配光纤，其中响应速度相对较低的第一光纤被布置在输入侧，并且响应速度相对较高的第二光纤被布置在 输出侧用作掺杂有稀土元素的光放大介质。
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公开(公告)号：US07136219B2
公开(公告)日：2006-11-14
申请号：US11094720
申请日：2005-03-31
IPC分类号： H01S3/00
CPC分类号： H04B10/2941 , H01S3/0064 , H01S3/06708 , H01S3/0672 , H01S3/06729 , H01S3/06758 , H01S3/0677 , H01S3/094003 , H01S3/094023 , H01S3/0941 , H01S3/1301 , H01S3/1305 , H01S3/1608 , H01S2301/02
摘要： The present invention has an object to provide an optical amplifier capable of realizing a good response characteristic in a wide frequency band, even when a population inversion state is formed by a pumping light supplied to an optical amplification medium and an ASE light generated in the optical amplification medium. To this end, in the optical amplifier according to the present invention, a delayed phase matching fiber in which a first fiber whose response speed is relatively low is arranged on the input side and a second fiber whose response speed is relatively high is arranged on the output side, is used as the optical amplification medium doped with a rare-earth element.
摘要翻译： 本发明的目的是提供一种能够在宽频带中实现良好的响应特性的光放大器，即使当通过提供给光放大介质的泵浦光和在光学放大器中产生的ASE光形成群体反转状态时 扩增介质。 为此，在根据本发明的光放大器中，延迟相位匹配光纤，其中响应速度相对较低的第一光纤被布置在输入侧，并且响应速度相对较高的第二光纤被布置在 输出侧用作掺杂有稀土元素的光放大介质。
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公开(公告)号：US20070274725A1
公开(公告)日：2007-11-29
申请号：US11709729
申请日：2007-02-23
IPC分类号： H04J14/00
CPC分类号： H04J14/0221 , H04B10/506 , H04B10/564 , H04J14/0204 , H04J14/0212 , H04J14/0227
摘要： In an optical transmission apparatus, optical power of each of wavelength contained in a wavelength multiplexing signal is measured, a measured value of the optical power of each wavelength is compared with a predetermined threshold value, a total value of the measured values of the optical power, which are equal to or larger than the threshold value, is calculated as a total value of signal beam power, and a total value of the measured values of the optical power, which are less then the threshold value, is calculated as a total value of ASE power. The number of the measured values of the optical power, which are equal to or larger than the threshold value, is calculated as a wavelength count of the signal beams contained in the wavelength multiplexing signal. A signal-to-ASE ratio is calculated from the total value of the signal beam power and the total value of the ASE power. The optical power of the wavelength multiplexing signal inputted to an optical amplifier is measured, and a target value of the automatic level control (ALC) is determined by use of the measured values of the wavelength count, the signal-to-ASE ratio and the optical power of the wavelength multiplexing signal in order to execute the ALC of the optical amplifier so that the optical power of each of the wavelengths in the wavelength multiplexing signal outputted from the optical amplifier, becomes constant.
摘要翻译： 在光传输装置中，测定包含在波长多路复用信号中的各波长的光功率，将各波长的光功率的测量值与预定阈值进行比较，光功率的测量值的总和 被计算为信号光束功率的总值，并且计算小于阈值的光功率的测量值的总值作为总值，其等于或大于阈值 的ASE电力。 计算出等于或大于阈值的光功率的测量值的数量作为包含在波长复用信号中的信号光束的波长计数。 从信号光束功率的总值和ASE功率的总值计算信号到ASE比。 测量输入到光放大器的波长复用信号的光功率，并且通过使用波长计数，信号与ASE比和测量值的测量值来确定自动电平控制（ALC）的目标值 为了执行光放大器的ALC，使得从光放大器输出的波长复用信号中的每个波长的光功率变得恒定，所以波长多路复用信号的光功率变得恒定。
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