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公开(公告)号：US08773755B2
公开(公告)日：2014-07-08
申请号：US13597977
申请日：2012-08-29
申请人： Masato Nishihara , Takeshi Hoshida
发明人： Masato Nishihara , Takeshi Hoshida
IPC分类号： H01S3/091
CPC分类号： G02B6/02038 , H01S3/0078 , H01S3/06737 , H01S3/06754 , H01S3/06758 , H01S3/06766 , H01S3/06775 , H01S3/06787 , H01S3/094011 , H01S3/094015 , H01S3/094096 , H01S3/09415 , H01S3/1608
摘要： An optical amplifier includes a pump light source that outputs pump light, and a multicore fiber that includes at least one pumping core, the pump light being input to the at least one pumping core by coupler, at least two signal light cores doped with an active substance for optical amplification, at least one signal light being input to at least one of the signal light cores, and a cladding, wherein the pump light propagating the at least one pumping core and exciting the active substance in the signal light cores, so as to amplify the at least one signal light propagating through the at least one of the signal light cores.
摘要翻译： 光放大器包括输出泵浦光的泵浦光源和包括至少一个泵芯的多芯光纤，所述泵浦光通过耦合器输入到所述至少一个泵芯，所述至少两个信号光核掺杂有活性物质 用于光放大的物质，至少一个信号光被输入到至少一个信号光芯和包层，其中泵浦光传播至少一个泵浦芯并激发信号光芯中的活性物质，以便 以放大通过信号光芯中的至少一个传播的至少一个信号光。
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2.发明授权公开(公告)号：US08565616B2
公开(公告)日：2013-10-22
申请号：US13028677
申请日：2011-02-16
申请人： Toshiki Tanaka , Yuichi Akiyama , Masato Nishihara
发明人： Toshiki Tanaka , Yuichi Akiyama , Masato Nishihara
IPC分类号： H04B10/04
CPC分类号： H04B10/50575 , H04B10/564 , H04J14/06
摘要： A polarized-wave-multiplexing optical transmitter including: an optical combiner generating a polarized-wave-multiplexed optical signal by polarized-wave-multiplexing a first optical modulation signal and a second optical modulation signal; an optical power fluctuation portion fluctuating optical power of the first optical modulation signal and the second optical modulation signal periodically; a total-optical-power detection portion detecting fluctuation amount of total optical power of the polarized-wave-multiplexed optical signal; and an optical power controller reducing an optical power difference between the first optical modulation signal and the second optical modulation signal based on detection result of the total-optical-power detection portion.
摘要翻译： 一种偏振波复用光发送器，包括：光合成器，通过对第一光调制信号和第二光调制信号进行极化波多路复用产生偏振波复用光信号; 光功率波动部分周期性地波动第一光调制信号和第二光调制信号的光功率; 总光功率检测部分，检测偏振波复用光信号的总光功率的波动量; 以及光功率控制器，其基于所述总光功率检测部的检测结果，降低所述第一光调制信号与所述第二光调制信号之间的光功率差。
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公开(公告)号：US20130063809A1
公开(公告)日：2013-03-14
申请号：US13597977
申请日：2012-08-29
申请人： Masato Nishihara , Takeshi Hoshida
发明人： Masato Nishihara , Takeshi Hoshida
CPC分类号： G02B6/02038 , H01S3/0078 , H01S3/06737 , H01S3/06754 , H01S3/06758 , H01S3/06766 , H01S3/06775 , H01S3/06787 , H01S3/094011 , H01S3/094015 , H01S3/094096 , H01S3/09415 , H01S3/1608
摘要： An optical amplifier includes a pump light source that outputs pump light, and a multicore fiber that includes at least one pumping core, the pump light being input to the at least one pumping core by coupler, at least two signal light cores doped with an active substance for optical amplification, at least one signal light being input to at least one of the signal light cores, and a cladding, wherein the pump light propagating the at least one pumping core and exciting the active substance in the signal light cores, so as to amplify the at least one signal light propagating through the at least one of the signal light cores.
摘要翻译： 光放大器包括输出泵浦光的泵浦光源和包括至少一个泵芯的多芯光纤，所述泵浦光通过耦合器输入到所述至少一个泵芯，所述至少两个信号光核掺杂有活性物质 用于光放大的物质，至少一个信号光被输入到至少一个信号光芯和包层，其中泵浦光传播至少一个泵浦芯并激发信号光芯中的活性物质，以便 以放大通过信号光芯中的至少一个传播的至少一个信号光。
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公开(公告)号：US07715093B2
公开(公告)日：2010-05-11
申请号：US12016176
申请日：2008-01-17
申请人： Masato Nishihara , Miki Onaka , Etsuko Hayashi
发明人： Masato Nishihara , Miki Onaka , Etsuko Hayashi
IPC分类号： H01S3/00
CPC分类号： H04B10/2942 , H01S3/06754 , H01S3/10015 , H01S3/10069 , H01S3/1301 , H01S3/302
摘要： A control apparatus comprises a light monitoring unit for dividing a signal wavelength band into at least a band in which output light power of an optical amplifier tends to decrease at an decrease in the number of signal wavelengths and a band including a gain deviation band, and for monitoring inputted light power for the individual divided bands, a calculation unit for obtaining the number of signal wavelengths in the individual divided bands based on a monitor result, and a target gain correction unit for correcting a target gain based on a result of the calculation. This suppresses a transient variation of signal light level due to SHB or SRS at a high speed with a simple configuration without deteriorating noise characteristic, thus enabling optical amplifiers to be further disposed in a multi-stage fashion, which can lengthen the transmission distance of a transmission system including an optical add/drop unit.
摘要翻译： 一种控制装置，包括：光监视单元，用于将信号波长带分割成至少一个频带，其中信号波长数目的减少和包括增益偏差带的波段的光放大器的输出光功率趋于减小;以及 用于监视各个分割频带的输入光功率;计算单元，用于基于监视结果获得各个分割频带中的信号波长数;以及目标增益校正单元，用于基于计算结果来校正目标增益 。 这样可以通过简单的结构，以高速度抑制由于SHB或SRS引起的信号光电平的瞬态变化，而不会使噪声特性恶化，从而能够以多级方式进一步布置光放大器，这可以延长传输距离 传输系统包括光学分插单元。
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5.发明授权公开(公告)号：US07551347B2
公开(公告)日：2009-06-23
申请号：US11979370
申请日：2007-11-01
IPC分类号： H04B10/17
CPC分类号： H01S3/06754 , H01S3/0007 , H01S3/0064 , H01S3/06758 , H01S3/0677 , H01S3/09415 , H01S3/1608 , H01S2301/04
摘要： In an optical amplification characteristics simulation apparatus according to the present invention, using spectrums of a signal light input to an optical amplifier and a characteristic parameter for amplification medium, gain wavelength characteristics of the amplification medium are calculated. A calculating formula for the above has a parameter corresponding to a gain fluctuation portion due to a gain spectral hole burning (GSHB) phenomenon, and this parameter is defined by a function obtained by modeling a physical phenomenon in which a population inversion rate is reduced due to the GSHB, based on that electron occupation numbers in each Stark level on the end level side are increased. Then, based on the calculated gain wavelength characteristics, the output power of the signal light is obtained, to thereby perform the optical amplification characteristics simulation on the optical amplifier. As a result, it is possible to construct a high versatile calculation model based on the physical phenomenon for the gain fluctuation due to the GSHB, to thereby simulate with high precision the optical amplification characteristics of the optical amplifier under arbitrary conditions.
摘要翻译： 在根据本发明的光放大特性模拟装置中，使用输入到光放大器的信号光的光谱和放大介质的特性参数，计算放大介质的增益波长特性。 上述计算公式由于增益谱孔燃烧（GSHB）现象而具有与增益变动部分相对应的参数，该参数由通过模拟体积反转率减少的物理现象获得的函数来定义 根据GSHB的最终级别的每个Stark级别的电子占有数量增加。 然后，基于计算出的增益波长特性，获得信号光的输出功率，从而对光放大器进行光放大特性仿真。 结果，可以基于由于GSHB引起的增益波动的物理现象构建高通用性计算模型，从而以任意条件高精度模拟光放大器的光放大特性。
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公开(公告)号：US20080239470A1
公开(公告)日：2008-10-02
申请号：US12016176
申请日：2008-01-17
申请人： Masato Nishihara , Miki Onaka , Etsuko Hayashi , Shinichirou Muro
发明人： Masato Nishihara , Miki Onaka , Etsuko Hayashi , Shinichirou Muro
IPC分类号： H01S3/00
CPC分类号： H04B10/2942 , H01S3/06754 , H01S3/10015 , H01S3/10069 , H01S3/1301 , H01S3/302
摘要： A control apparatus comprises a light monitoring unit for dividing a signal wavelength band into at least a band in which output light power of an optical amplifier tends to decrease at an decrease in the number of signal wavelengths and a band including a gain deviation band, and for monitoring inputted light power for the individual divided bands, a calculation unit for obtaining the number of signal wavelengths in the individual divided bands based on a monitor result, and a target gain correction unit for correcting a target gain based on a result of the calculation. This suppresses a transient variation of signal light level due to SHB or SRS at a high speed with a simple configuration without deteriorating noise characteristic, thus enabling optical amplifiers to be further disposed in a multi-stage fashion, which can lengthen the transmission distance of a transmission system including an optical add/drop unit.
摘要翻译： 一种控制装置，包括：光监视单元，用于将信号波长带分割成至少一个频带，其中信号波长数目的减少和包括增益偏差带的波段的光放大器的输出光功率趋于减小;以及 用于监视各个分割频带的输入光功率;计算单元，用于基于监视结果获得各个分割频带中的信号波长数;以及目标增益校正单元，用于基于计算结果来校正目标增益 。 这样可以通过简单的结构，以高速度抑制由于SHB或SRS引起的信号光电平的瞬态变化，而不会使噪声特性恶化，从而能够以多级方式进一步布置光放大器，这可以延长传输距离 传输系统包括光学分插单元。
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公开(公告)号：US20080187324A1
公开(公告)日：2008-08-07
申请号：US12013857
申请日：2008-01-14
IPC分类号： H04B10/04
CPC分类号： H04B10/5053 , H04B10/50 , H04B10/50575
摘要： The disclosed optical transmitter and control method include performing phase modulation of a light propagating through a corresponding optical path in accordance with a data signal, supplying bias voltages for regulating an operating point of each of phase modulation performed, imparting a predetermined phase difference, supplying bias voltages for phase difference regulation and coupling lights output from the corresponding optical paths. The optical transmitter includes superimposing a pilot signal on either one of bias voltages where the pilot signal has a frequency lower than a frequency of a bit rate of the data signal, and performing a feedback control in accordance with a result of monitoring.
摘要翻译： 所公开的光发射机和控制方法包括根据数据信号执行通过对应的光路传播的光的相位调制，提供用于调节执行的每个相位调制的工作点的偏置电压，赋予预定的相位差，提供偏置 用于从相应光路输出的相位差调节和耦合光的电压。 光发射机包括将导频信号叠加在导频信号的频率低于数据信号的比特率的频率的偏置电压中的任一个上，并且根据监视的结果进行反馈控制。
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公开(公告)号：US07359112B2
公开(公告)日：2008-04-15
申请号：US11362727
申请日：2006-02-28
申请人： Masato Nishihara , Miki Onaka , Etsuko Hayashi , Shinichirou Muro
发明人： Masato Nishihara , Miki Onaka , Etsuko Hayashi , Shinichirou Muro
IPC分类号： H01S3/00
CPC分类号： H04B10/2942 , H01S3/06754 , H01S3/10015 , H01S3/10069 , H01S3/1301 , H01S3/302
摘要： A control apparatus comprises a light monitoring unit for dividing a signal wavelength band into at least a band in which output light power of an optical amplifier tends to decrease at an decrease in the number of signal wavelengths and a band including a gain deviation band, and for monitoring inputted light power for the individual divided bands, a calculation unit for obtaining the number of signal wavelengths in the individual divided bands based on a monitor result, and a target gain correction unit for correcting a target gain based on a result of the calculation. This suppresses a transient variation of signal light level due to SHB or SRS at a high speed with a simple configuration without deteriorating noise characteristic, thus enabling optical amplifiers to be further disposed in a multi-stage fashion, which can lengthen the transmission distance of a transmission system including an optical add/drop unit.
摘要翻译： 一种控制装置，包括：光监视单元，用于将信号波长带分割成至少一个频带，其中信号波长数目的减少和包括增益偏差带的波段的光放大器的输出光功率趋于减小;以及 用于监视各个分割频带的输入光功率;计算单元，用于基于监视结果获得各个分割频带中的信号波长数;以及目标增益校正单元，用于基于计算结果来校正目标增益 。 这样可以通过简单的结构，以高速度抑制由于SHB或SRS引起的信号光电平的瞬态变化，而不会使噪声特性恶化，从而能够以多级方式进一步布置光放大器，这可以延长传输距离 传输系统包括光学分插单元。
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公开(公告)号：US07285348B2
公开(公告)日：2007-10-23
申请号：US10789932
申请日：2004-02-27
CPC分类号： H01M8/0247 , H01M8/1231 , H01M8/2425 , H01M8/2432
摘要： A solid oxide fuel cell comprising an electrically conducting electrode-support substrate, an inner electrode layer, a solid electrolyte layer, an outer electrode layer and an interconnector, wherein said electrode-support substrate includes a flat plate having two flat surfaces which are in parallel with each other and forming a plurality of gas flow passages therein, and curved portions located at both ends of said flat plate, and said outer electrode layer is laminated on the solid electrolyte layer so as to be opposed to the other surface of said flat plate where the interconnector is not provided but so as not to be opposed to said curved portions. The solid oxide fuel cell features a small voltage drop, an increased output density, and is easily produced exhibiting stable characteristics.
摘要翻译： 一种固体氧化物燃料电池，包括导电电极支撑基板，内部电极层，固体电解质层，外部电极层和互连器，其中所述电极支撑基板包括具有平行的两个平坦表面的平板 彼此形成多个气流通道，并且位于所述平板的两端的弯曲部分和所述外电极层层压在固体电解质层上以与所述平板的另一表面相对 其中没有设置互连器，而是不与所述弯曲部分相对。 固体氧化物燃料电池具有小的电压降，增加的输出密度，并且容易产生，表现出稳定的特性。
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10.发明授权Apparatus and method for amplification medium performance simulation, and optical amplifier 有权用于放大介质性能仿真的装置和方法，以及光放大器公开(公告)号：US07212335B2
公开(公告)日：2007-05-01
申请号：US11187938
申请日：2005-07-25
申请人： Masato Nishihara , Yasushi Sugaya , Etsuko Hayashi
发明人： Masato Nishihara , Yasushi Sugaya , Etsuko Hayashi
CPC分类号： H04B10/0731 , H01S3/06716 , H01S3/06754 , H01S3/1608
摘要： An amplification medium simulation apparatus comprises a basic data retaining unit 21, an input signal beam information retaining unit 22, and a simulation executing unit 31 approximating and calculating an output signal beam power at each signal beam wavelength outputted from the amplification medium involving a fluctuation in ion population at the metastable energy level in the amplification medium due to input of the input signal beam, by using contents retained in the basic data retaining unit 21 and the input signal beam information retaining unit 22, and outputting a result of calculation as a result of simulation of performance of the amplification medium.
摘要翻译： 放大介质模拟装置包括基本数据保持单元21，输入信号波束信息保持单元22和仿真执行单元31，该模拟执行单元31近似并计算从扩展介质输出的每个信号波长的输出信号波束功率， 由于输入信号光束的输入，通过使用保存在基本数据保持单元21和输入信号光束信息保持单元22中的内容，在放大介质中的亚稳态能级的离子群，并输出计算结果 的放大介质的性能仿真。
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