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公开(公告)号：US20100067099A1
公开(公告)日：2010-03-18
申请号：US12619455
申请日：2009-11-16
Applicant: Youichi AKASAKA , Yoshihiro Emori , Shu Namiki
Inventor： Youichi AKASAKA , Yoshihiro Emori , Shu Namiki
Abstract: A Raman amplifier according to the present invention comprises a plurality of pumping means using semiconductor lasers of Fabry-Perot, DFB, or DBR type or MOPAs, and pumping lights outputted from the pumping means have different central wavelengths, and interval between the adjacent central wavelength is greater than 6 nm and smaller than 35 nm. An optical repeater according to the present invention comprises the above-mentioned Raman amplifier and adapted to compensate loss in an optical fiber transmission line by the Raman amplifier. In a Raman amplification method according to the present invention, the shorter the central wavelength of the pumping light the higher light power of said pumping light. In the Raman amplifier according to the present invention, when a certain pumping wavelength is defined as a first channel, and second to n-th channels are defined to be arranged with an interval of about 1 THz toward a longer wavelength side, the pumping lights having wavelengths corresponding to the first to n-th channels are multiplexed, and an pumping light having a wavelength spaced apart from the n-th channel by 2 THz or more toward the longer wavelength side is combined with the multiplexed light, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-1)-th and (n-2)-th channels may be multiplexed, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-2)-th and (n-3)-th channels may be multiplexed, thereby forming the pumping light source.
Abstract translation: 根据本发明的拉曼放大器包括使用Fabry-Perot，DFB或DBR型或MOPA的半导体激光器的多个泵浦装置，并且从泵送装置输出的泵浦光具有不同的中心波长，并且相邻中心波长 大于6nm且小于35nm。 根据本发明的光中继器包括上述拉曼放大器，并且用于补偿拉曼放大器在光纤传输线路中的损耗。 在根据本发明的拉曼放大方法中，泵浦光的中心波长越短，所述泵浦光的光功率越高。 在根据本发明的拉曼放大器中，当将一定的泵浦波长定义为第一通道时，并且将第二至第n通道限定为朝向较长波长侧以大约1THz的间隔布置，泵浦灯 具有对应于第一至第n通道的波长的多路复用，并且将具有与第n个信道间隔开2波长或更长的波长朝向较长波长侧的波长的泵浦光与多路复用光组合，从而形成泵浦 光源。 具有与第（n-1）和（n-2）通道以外的通道对应的波长的泵浦光可以被多路复用，从而形成泵浦光源。 具有与第（n-2）和（n-3）通道以外的通道对应的波长的泵浦光可以被多路复用，从而形成泵浦光源。
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2.发明授权公开(公告)号：US07072369B2
公开(公告)日：2006-07-04
申请号：US10820771
申请日：2004-04-09
Applicant: Shunichi Matsushita , Shu Namiki , Yoshihiro Emori
Inventor： Shunichi Matsushita , Shu Namiki , Yoshihiro Emori
CPC classification number: H01S5/146 , H01S3/094003 , H01S3/094073 , H01S3/302 , H01S5/06236
Abstract: The present invention provides the following designing method: in a laser diode module or a depolarized laser diode module which has one laser diode and one polarization maintaining fiber connected to the output side thereof, the length of the polarization maintaining fiber is a value obtained by calculation of equation 37 with use of a longitudinal mode spacing Δλoutput light from the Fabry Perot (FP) laser diode, an oscillating center wavelength λ0 of the laser light, a beat length LBeat 1 of the polarization maintaining fiber and an optical wavelength λBeat used in the measurement of the LBeat 1. (Equation 37) L Pig
Abstract translation: 本发明提供以下设计方法：在激光二极管模块或去极化激光二极管模块中，其具有连接到其输出侧的一个激光二极管和一个偏振保持光纤，所述偏振保持光纤的长度是通过计算获得的值 使用来自法布里珀罗（FP）激光二极管的纵向模式间隔Deltalλ输出光，激光的振荡中心波长λ<0>，拍子长度L < / SUB>和用于测量L“Beat 1”的光波长λ。 （公式37）
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公开(公告)号：US20060109875A1
公开(公告)日：2006-05-25
申请号：US10820771
申请日：2004-04-09
Applicant: Shunichi Matsushita , Shu Namiki , Yoshihiro Emori
Inventor： Shunichi Matsushita , Shu Namiki , Yoshihiro Emori
CPC classification number: H01S5/146 , H01S3/094003 , H01S3/094073 , H01S3/302 , H01S5/06236
Abstract: The present invention provides the following designing method: in a laser diode module or a depolarized laser diode module which has one laser diode and one polarization maintaining fiber connected to the output side thereof, the length of the polarization maintaining fiber is a value obtained by calculation of equation 37 with use of a longitudinal mode spacing Δλoutput light from the Fabry Perot (FP) laser diode, an oscillating center wavelength λ0 of the laser light, a beat length LBeat 1 of the polarization maintaining fiber and an optical wavelength λBeat used in the measurement of the LBeat 1. L Pig
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4.发明申请Method and apparatus for controlling multiple-wavelength-pumped raman amplifier and computer product 有权用于控制多波长泵浦拉曼放大器和计算机产品的方法和装置公开(公告)号：US20060001950A1
公开(公告)日：2006-01-05
申请号：US11212903
申请日：2005-08-29
Applicant: Koji Fujimura , Misao Sakano , Takeshi Nakajima , Shu Namiki
Inventor： Koji Fujimura , Misao Sakano , Takeshi Nakajima , Shu Namiki
IPC: H01S3/00
CPC classification number: H04B10/2916 , H01S3/06725 , H01S3/06754 , H01S3/06758 , H01S3/06766 , H01S3/0677 , H01S3/094003 , H01S3/094011 , H01S3/094096 , H01S3/0941 , H01S3/1305 , H01S3/302 , H01S2301/04
Abstract: A multiple-wavelength-pumped Raman amplifier includes a control unit that controls, based on a relational expression associating an amount of fluctuation in a current signal light power at a signal input end, an amount of fluctuation in a current pumping light power at a pumping light input end, an amount of fluctuation in the current signal power at a signal output end, and an amount of fluctuation in the current pumping light power at a pumping light output end, two fluctuation amounts by determining other two fluctuation amounts in advance, to determine pumping light powers satisfying the relational expression.
Abstract translation: 多波长泵浦拉曼放大器包括控制单元，其基于将信号输入端的当前信号光功率中的波动量相关联的关系表达式控制泵浦时的当前泵浦光功率的波动量 光输入端，信号输出端的当前信号功率的波动量以及泵浦光输出端的当前泵浦光功率的波动量，通过预先确定其他两个波动量来确定两个波动量，到 确定满足关系表达式的泵浦光功率。
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公开(公告)号：US06611369B2
公开(公告)日：2003-08-26
申请号：US09654974
申请日：2000-09-05
Applicant: Shunichi Matsushita , Shu Namiki , Yoshihiro Emori
Inventor： Shunichi Matsushita , Shu Namiki , Yoshihiro Emori
IPC: H01S330
CPC classification number: H01S3/302 , H01S3/094003 , H01S3/094073 , H01S3/094096 , H01S3/2375 , H01S5/146
Abstract: An optical signal amplifier comprises a light source, a depolarizer, and a gain medium that transfers energy from a pump beam output from the depolarizer to the optical signal. The depolarizer may comprise one or more birefringent optical fibers which support two polarization modes, a fast mode and a slow mode. The light propagates in the fast mode at a higher velocity than the light propagates in the slow mode so as to impart phase delay as the light propagates in the birefringent optical fibers, thereby at least partially depolarizing the beam.
Abstract translation: 光信号放大器包括光源，去偏振器和将从去偏振器输出的泵浦光束的能量传递到光信号的增益介质。 去偏振器可以包括支持两种偏振模式的一个或多个双折射光纤，即快速模式和慢速模式。 光在快速模式下以比在慢速模式中传播的光速更高的速度传播，以便当光在双折射光纤中传播时给予相位延迟，从而至少部分地使光束去极化。
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Patent Agency Ranking
公开(公告)号：US5553178A
公开(公告)日：1996-09-03
申请号：US150194
申请日：1994-04-22
Applicant: Shu Namiki
Inventor： Shu Namiki
CPC classification number: G02B6/4206
Abstract: The present invention provides an asymmetrical lens showing different sets of optical characteristics as projected on two planes that are parallel to the optical axis of the lens and perpendicular to each other and satisfying the following simultaneous system of equations.(w.perp.2)/(w.perp.1)=(f.perp.2)/(f.perp.1) [2](w.parallel.2)/(w.parallel.1)32 (f.parallel.2)/(f.parallel.1)[3](d.perp.1)=.vertline.(s.perp.1).vertline.(s.parallel.1) [4](d2)=.vertline.(s.perp.2)-(s.parallel.2) [5]Since the asymmetry of an asymmetrical lens according to the invention is clearly defined by a given simultaneous system of equations, it can be effectively used to optically couple optical waveguides with a low optical loss level if the optical waveguides operate with different waveguide modes, if the waveguide modes of the optical waveguides are not similar relative to one another, if the optical waveguides have mutually different sets of optical characteristics or even if the optical waveguides show astigmatism in their respective radiation patterns.
Abstract translation: PCT No.PCT / JP93 / 00446 Sec。 371日期1994年04月22日 102（e）日期1994年4月22日PCT提交1993年4月6日PCT公布。 公开号WO93 / 20468 日期：1993年10月14日本发明提供了一种非对称透镜，其显示出在平行于透镜的光轴并且彼此垂直的两个平面上的不同组的光学特性，并且满足以下同时的方程组（w ORTHOGONAL 2）/（正ORTHOGONAL 1）=（f正离子2）/（f正离子1）[2]（w PARALLEL 2）/（w PARALLEL 1）32（f PARALLEL 2）/（f PARALLEL 1）[3] d正交1）= |（s ORTHOGONAL 1）|（s PARALLEL 1）[4]（d2）= |（s ORTHOGONAL 2） - （s PARALLEL 2）[5]由于根据本发明的不对称透镜的不对称性 通过给定的同时方程式清楚地定义，如果光波导以不同的波导模式操作，则可以有效地光耦合具有低光损耗水平的光波导，如果光波导的波导模式相对于 另一方面，如果光波导具有相互不同的光学特性集合，或者即使如此 光波导在其各自的辐射图中显示像散。
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公开(公告)号：US07692852B2
公开(公告)日：2010-04-06
申请号：US11689352
申请日：2007-03-21
Applicant: Youichi Akasaka , Yoshihiro Emori , Shu Namiki
Inventor： Youichi Akasaka , Yoshihiro Emori , Shu Namiki
IPC: H04B10/17
CPC classification number: H01S3/302 , H01S3/06754 , H01S3/06758 , H01S3/0912 , H01S3/094011 , H01S3/094015 , H01S3/094096 , H01S3/10007 , H01S3/10015 , H01S3/2375 , H01S3/2383 , H01S2301/04 , H04B10/2916
Abstract: A Raman amplifier according to the present invention comprises a plurality of pumping means using semiconductor lasers of Fabry-Perot, DFB, or DBR type or MOPAs, and pumping lights outputted from the pumping means have different central wavelengths, and interval between the adjacent central wavelength is greater than 6 nm and smaller than 35 nm. An optical repeater according to the present invention comprises the above-mentioned Raman amplifier and adapted to compensate loss in an optical fiber transmission line by the Raman amplifier. In a Raman amplification method according to the present invention, the shorter the central wavelength of the pumping light the higher light power of said pumping light. In the Raman amplifier according to the present invention, when a certain pumping wavelength is defined as a first channel, and second to n-th channels are defined to be arranged with an interval of about 1 THz toward a longer wavelength side, the pumping lights having wavelengths corresponding to the first to n-th channels are multiplexed, and an pumping light having a wavelength spaced apart from the n-th channel by 2 THz or more toward the longer wavelength side is combined with the multiplexed light, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-1)-th and (n-2)-th channels may be multiplexed, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-2)-th and (n-3)-th channels may be multiplexed, thereby forming the pumping light source.
Abstract translation: 根据本发明的拉曼放大器包括使用Fabry-Perot，DFB或DBR型或MOPA的半导体激光器的多个泵浦装置，并且从泵送装置输出的泵浦光具有不同的中心波长，并且相邻中心波长 大于6nm且小于35nm。 根据本发明的光中继器包括上述拉曼放大器，并且用于补偿拉曼放大器在光纤传输线路中的损耗。 在根据本发明的拉曼放大方法中，泵浦光的中心波长越短，所述泵浦光的光功率越高。 在根据本发明的拉曼放大器中，当将一定的泵浦波长定义为第一通道时，并且将第二至第n通道限定为朝向较长波长侧以大约1THz的间隔布置，泵浦灯 具有对应于第一至第n通道的波长的多路复用，并且将具有与第n个信道间隔开2波长或更长的波长朝向较长波长侧的波长的泵浦光与多路复用光组合，从而形成泵浦 光源。 具有与第（n-1）和（n-2）通道以外的通道对应的波长的泵浦光可以被多路复用，从而形成泵浦光源。 具有与第（n-2）和（n-3）通道以外的通道对应的波长的泵浦光可以被多路复用，从而形成泵浦光源。
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公开(公告)号：US07548368B2
公开(公告)日：2009-06-16
申请号：US10824402
申请日：2004-04-15
Applicant: Youichi Akasaka , Yoshihiro Emori , Shu Namiki
Inventor： Youichi Akasaka , Yoshihiro Emori , Shu Namiki
CPC classification number: H01S3/302 , H01S3/06754 , H01S3/06758 , H01S3/0912 , H01S3/094011 , H01S3/094015 , H01S3/094096 , H01S3/10007 , H01S3/10015 , H01S3/2375 , H01S3/2383 , H01S2301/04 , H04B10/2916
Abstract: A Raman amplifier according to the present invention comprises a plurality of pumping means using semiconductor lasers of Fabry-Perot, DFB, or DBR type or MOPAs, and pumping lights outputted from the pumping means have different central wavelengths, and interval between the adjacent central wavelength is greater than 6 nm and smaller than 35 nm. An optical repeater according to the present invention comprises the above-mentioned Raman amplifier and adapted to compensate loss in an optical fiber transmission line by the Raman amplifier. In a Raman amplification method according to the present invention, the shorter the central wavelength of the pumping light the higher light power of said pumping light. In the Raman amplifier according to the present invention, when a certain pumping wavelength is defined as a first channel, and second to n-th channels are defined to be arranged with an interval of about 1 THz toward a longer wavelength side, the pumping lights having wavelengths corresponding to the first to n-th channels are multiplexed, and an pumping light having a wavelength spaced apart from the n-th channel by 2 THz or more toward the longer wavelength side is combined with the multiplexed light, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-1)-th and (n-2)-th channels may be multiplexed, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-2)-th and (n-3)-th channels may be multiplexed, thereby forming the pumping light source.
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9.发明授权Light source in optical transmission system, waveform shaper, optical pulse train generator, and optical reproduction system 有权光传输系统中的光源，波形整形器，光脉冲发生器和光学再现系统公开(公告)号：US07447444B2
公开(公告)日：2008-11-04
申请号：US11134275
申请日：2005-05-23
Applicant: Koji Igarashi , Yoshihiro Emori , Atsushi Oguri , Shu Namiki , Osamu Aso , Masateru Tadakuma
Inventor： Koji Igarashi , Yoshihiro Emori , Atsushi Oguri , Shu Namiki , Osamu Aso , Masateru Tadakuma
IPC: H04B10/04
CPC classification number: G02F1/365 , G02F1/3513 , G02F2203/17 , G02F2203/26 , H01S5/0623 , H04B10/25077 , H04B10/291
Abstract: The present invention provides a pulse train generator comprising: a dual-frequency signal light source for generating a dual-frequency signal; a soliton shaper for soliton-shaping output light from the dual-frequency signal light source; and an adiabatic soliton compressor for performing adiabatic soliton compression on output light from the soliton shaper, and also provides a waveform shaper used in this pulse train generator, including a plurality of highly nonlinear optical transmission lines and a plurality of low-nonlinearity optical transmission lines which has a nonlinearity coefficient lower than that of the plurality of highly nonlinear optical transmission lines and which has a second-order dispersion value of which an absolute value is different from that of the plurality of highly nonlinear optical transmission lines. Further, the present invention provides a light source comprising a plurality of continuous light sources of which at least one oscillates in a multimode; a multiplexer for multiplexing output light from the continuous light sources; and a nonlinear phenomenon producer for producing a nonlinear phenomenon on output light from the multiplexer so as to suppress SBS (Stimulated Brillouin Scattering).
Abstract translation: 本发明提供一种脉冲串发生器，包括：用于产生双频信号的双频信号光源; 用于孤子整形的孤子整形器来自双频信号光源的输出光; 以及用于对来自孤子整形器的输出光进行绝热孤子压缩的绝热孤子压缩器，并且还提供在该脉冲串发生器中使用的波形整形器，包括多个高度非线性的光传输线和多个低非线性光传输线 其具有比多个高度非线性光传输线的非线性系数低的非线性系数，并且具有绝对值与多个高度非线性光传输线的绝对值不同的二阶色散值。 此外，本发明提供了一种光源，其包括至少一个以多模振荡的多个连续光源; 多路复用器，用于复用来自连续光源的输出光; 以及用于在来自多路复用器的输出光上产生非线性现象以抑制SBS（受激布里渊散射）的非线性现象产生器。
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10.发明申请Optical Signal Processing Device For A/D Converter Including Optical Encoders With Nonlinear Loop Mirrors 失效包含带有非线性环路镜的光学编码器的A / D转换器的光信号处理装置公开(公告)号：US20080129564A1
公开(公告)日：2008-06-05
申请号：US10579630
申请日：2004-11-16
Applicant: Ken-ichi Kitayama , Kensuke Ikeda , Mohammad Abdul Jalil , Shu Namiki , Takashi Inoue
Inventor： Ken-ichi Kitayama , Kensuke Ikeda , Mohammad Abdul Jalil , Shu Namiki , Takashi Inoue
CPC classification number: H04B10/299 , G02F1/3519 , G02F3/00 , G02F7/00 , G02F2002/006
Abstract: An optically sampling device optically samples an optical analog signal using a sampled signal having a predetermined sampling frequency, and outputs control light having a pulse train of an optically sampled optical analog signal. A signal generating device generates a pulse train of signal light which is synchronized with the sampled signal. An optical encoding device optically encodes the pulse train of the signal light according to the control light, by using optical encoders each including nonlinear optical loop mirrors, and outputs pulse trains of optically encoded signal light from said optical encoders, respectively. An optically quantizing device performs optical threshold processing on the pulse trains of optically-encoded signal light to optically quantize them, by using at least one of optical threshold processors each of which is connected to each of said optical encoders and includes a nonlinear optical device, and outputs optically quantized pulse trains as optical digital signals.
Abstract translation: 光采样装置使用具有预定采样频率的采样信号对光模拟信号进行光学采样，并输出具有光采样光模拟信号的脉冲串的控制光。 信号发生装置产生与采样信号同步的信号光脉冲串。 光编码装置通过使用各自包括非线性光环路镜的光编码器，根据控制光对信号光的脉冲序列进行光学编码，并分别输出来自所述光编码器的光编码信号光的脉冲序列。 光学量化装置对光编码信号光的脉冲序列进行光阈值处理，以光学量化它们，通过使用光阈值处理器中的至少一个连接到每个所述光编码器，并且包括非线性光学装置， 并输出光量化的脉冲串作为光数字信号。
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