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1. 发明授权

US07668459B2 Dispersion monitoring method and apparatus and dispersion slope temperature dependency compensation method and apparatus 失效
标题翻译：色散监测方法及装置及色散斜率温度依赖性补偿方法及装置
公开(公告)号：US07668459B2
公开(公告)日：2010-02-23
申请号：US10624082
申请日：2003-07-21
申请人： Tetsuro Inui , Hidehiko Takara , Takashi Yamamoto
发明人： Tetsuro Inui , Hidehiko Takara , Takashi Yamamoto
IPC分类号： H04B10/08
CPC分类号： H04B10/25133 , H04B10/077 , H04B10/07951 , H04B10/07955
摘要： In a wavelength division multiplexing optical transmission system, in order to know an influence amount of a temperature dependency of a dispersion slope, a method of monitoring a dispersion variation amount in two or more of wavelength channels is provided. Further, a method of compensating a wavelength dependency of a temperature dependency of the dispersion by providing an appropriate dispersion individually to the channels or summarizingly for all of bandwidths based on the monitored dispersion variation amounts is provided. According to the present invention, in the WDM optical transmission system, a deterioration in a transmission characteristic by influence of a temperature variation of the dispersion slope can be reduced.
摘要翻译：在波分复用光传输系统中，为了知道色散斜率的温度依赖性的影响量，提供了监测两个或更多个波长信道中的色散变化量的方法。此外，提供了一种通过基于所监视的色散变化量向频道分别提供适当的色散或总体上针对所有带宽来补偿色散的温度依赖性的波长依赖性的方法。根据本发明，在WDM光传输系统中，可以降低由色散斜率的温度变化引起的透射特性的劣化。

2. 发明申请

US20070242956A1 Dispersion monitoring method and apparatus and dispersion slope temperature dependency compensation method and apparatus 失效
标题翻译：色散监测方法及装置及色散斜率温度依赖性补偿方法及装置
公开(公告)号：US20070242956A1
公开(公告)日：2007-10-18
申请号：US10624082
申请日：2003-07-21
申请人： Tetsuro Inui , Hidehiko Takara , Takashi Yamamoto
发明人： Tetsuro Inui , Hidehiko Takara , Takashi Yamamoto
IPC分类号： H04B10/04
CPC分类号： H04B10/25133 , H04B10/077 , H04B10/07951 , H04B10/07955
摘要： In a wavelength division multiplexing optical transmission system, in order to know an influence amount of a temperature dependency of a dispersion slope, a method of monitoring a dispersion variation amount in two or more of wavelength channels is provided. Further, a method of compensating a wavelength dependency of a temperature dependency of the dispersion by providing an appropriate dispersion individually to the channels or summarizingly for all of bandwidths based on the monitored dispersion variation amounts is provided. According to the present invention, in the WDM optical transmission system, a deterioration in a transmission characteristic by influence of a temperature variation of the dispersion slope can be reduced.
摘要翻译：在波分复用光传输系统中，为了知道色散斜率的温度依赖性的影响量，提供了监测两个或更多个波长信道中的色散变化量的方法。此外，提供了一种通过基于所监视的色散变化量向频道分别提供适当的色散或总体上针对所有带宽来补偿色散的温度依赖性的波长依赖性的方法。根据本发明，在WDM光传输系统中，可以降低由色散斜率的温度变化引起的透射特性的劣化。

3. 发明授权

US09065243B2 Optical amplifier 有权
标题翻译：光放大器
公开(公告)号：US09065243B2
公开(公告)日：2015-06-23
申请号：US13980756
申请日：2012-01-20
申请人： Masaki Asobe , Takeshi Umeki , Kouji Enbutsu , Akio Tokura , Yutaka Miyamoto , Hidehiko Takara , Hirokazu Takenouchi , Isao Tomita
发明人： Masaki Asobe , Takeshi Umeki , Kouji Enbutsu , Akio Tokura , Yutaka Miyamoto , Hidehiko Takara , Hirokazu Takenouchi , Isao Tomita
IPC分类号： H01S3/067 , G02F1/39 , G02F1/35 , H01S3/00 , H01S3/108 , G02F1/37 , H01S3/23
CPC分类号： H01S3/06754 , G02F1/3532 , G02F1/3534 , G02F1/3536 , G02F1/3544 , G02F1/37 , G02F1/39 , G02F2001/392 , H01S3/0092 , H01S3/1083 , H01S3/2391
摘要： The phase sensitive amplifier according to the present invention is a phase sensitive amplifier that uses the optical mixing using a nonlinear optical effect to amplify the signal light. The phase sensitive amplifier according to the present invention includes: the first second-order nonlinear optical element; and the second second-order nonlinear optical element. The first second-order nonlinear optical element causes the fundamental wave light to generate second harmonic light used as pump light and separates only the second harmonic light. The second second-order nonlinear optical element includes a multiplexer to multiplex the signal light with the second harmonic light and spectrally separates only the amplified signal light. The multiplexed signal light and second harmonic light are used subjected to parametric amplification.
摘要翻译：根据本发明的相位敏感放大器是使用非线性光学效应的光学混合放大信号光的相位敏感放大器。根据本发明的相位敏感放大器包括：第一二阶非线性光学元件; 和第二二阶非线性光学元件。第一二阶非线性光学元件使得基波光产生用作泵浦光的二次谐波，并且仅分离二次谐波光。第二二阶非线性光学元件包括多路复用器，用于将信号光与第二谐波光进行多路复用，并且仅对放大的信号光进行光谱分离。复用的信号光和二次谐波光被使用进行参数放大。

4. 发明授权

US06697395B2 Sum frequency light generation method and sum frequency light generation apparatus adapatble for wide-band wavelength conversion 有权
标题翻译：求和频率光产生方法和和频光发生装置适用于宽带波长转换
公开(公告)号：US06697395B2
公开(公告)日：2004-02-24
申请号：US10096037
申请日：2002-03-12
申请人： Akihito Otani , Toshinobu Otsubo , Hidehiko Takara , Ippei Shake , Satoki Kawanishi
发明人： Akihito Otani , Toshinobu Otsubo , Hidehiko Takara , Ippei Shake , Satoki Kawanishi
IPC分类号： H01S310
CPC分类号： G02F1/3534 , G02F1/3544 , G02F2203/07
摘要： A nonlinear optical crystal allowing type 2 phase matching multiplexes a fixed wavelength light having an angular frequency &ohgr;D and a variable wavelength light having an angular frequency &ohgr;S, with the polarization directions thereof being perpendicular to each other, so as to produce a sum frequency light having an angular frequency &ohgr;D+&ohgr;S. When multiplexing the fixed wavelength light and the variable wavelength light through the nonlinear optical crystal, a controlling section controls the polarization direction of the fixed wavelength light so as to be parallel to a predetermined reference axis within a plane vertical to a phase matching direction of the nonlinear optical crystal. Even when the wavelength of inputted light is changed, the predetermined reference axis is a single axis which maintains parallelism with the crystal axis of the nonlinear optical crystal.
摘要翻译：允许2型相位匹配的非线性光学晶体复用具有角频率ωD的固定波长光和具有角频率ωs的可变波长光，其偏振方向彼此垂直，以便产生具有角频率ω+ D +ω。当通过非线性光学晶体复用固定波长光和可变波长光时，控制部分将固定波长的光的偏振方向控制在垂直于垂直于相位匹配方向的平面内的预定基准轴上非线性光学晶体。即使输入光的波长发生变化，规定的基准轴也是与非线性光学晶体的晶轴平行的单轴。

5. 发明授权

US5999548A White optical pulse source and applications 失效
标题翻译：白光脉冲源及应用
公开(公告)号：US5999548A
公开(公告)日：1999-12-07
申请号：US98323
申请日：1998-06-16
申请人： Kunihiko Mori , Hidehiko Takara , Satoki Kawanishi , Masatoshi Saruwatari
发明人： Kunihiko Mori , Hidehiko Takara , Satoki Kawanishi , Masatoshi Saruwatari
IPC分类号： G02F1/365 , H01S3/10
CPC分类号： G02F1/365 , G02F2001/3528 , H01S3/0078 , H01S3/1305 , Y10S372/703
摘要： The present invention relates to a white pulse source that produces spectrally shaped white pulses of a constant optical output power over a wide wavelength range. The white pulse source includes a pump pulse source for generating pump pulses with a center wavelength .lambda.0 and a waveguided nonlinear optical medium with a length L. The waveguided nonlinear optical medium is characterized by two properties: the first property is that chromatic dispersion D(.lambda.0,z) at the center wavelength of pump pulses in ps/nm/km is positive at an input end of said waveguided nonlinear optical medium, where z=0, and decreases towards an output end. The second property is that said chromatic dispersion D(.lambda., z) has a maximum value D(.lambda.p(z), z) at a peak wavelength .lambda.p(z) within a range of propagation distance given by L1.ltoreq.z.ltoreq.L where 0.ltoreq.L1
摘要翻译：白色脉冲源技术领域本发明涉及在宽波长范围内产生恒定光输出功率的光谱形白脉冲的白脉冲源。白色脉冲源包括用于产生具有中心波长λ0的泵浦脉冲的泵浦脉冲源和具有长度L的波导非线性光学介质。波导非线性光学介质的特征在于两个性质：第一特性是色散D（在所述波导非线性光学介质的输入端，在ps / nm / km的泵浦脉冲的中心波长处的λ0，z z为正，其中z = 0，并且朝向输出端减小。第二个特征是所述色散D（λ，z）在由L1

6. 发明授权

US5590143A Multiple-frequency-modulation type mode-locked laser device 失效
标题翻译：多频调制型锁模激光器件
公开(公告)号：US5590143A
公开(公告)日：1996-12-31
申请号：US398177
申请日：1995-03-02
申请人： Hidehiko Takara , Satoki Kawanishi , Masatoshi Saruwatari
发明人： Hidehiko Takara , Satoki Kawanishi , Masatoshi Saruwatari
IPC分类号： H01S3/083 , H01S3/098 , H01S3/107 , H01S3/10
CPC分类号： H01S3/1109 , H01S3/107 , H01S3/083 , H01S3/2383
摘要： A multiple-frequency-modulation mode-locked laser device which generates high-speed optical pulse trains and can be used as a high-speed optical pulse source in the fields of optical communications and optical measurement is presented, wherein the repetition frequency F.sub.rep and the pulse width .DELTA.t are able to be controlled independently with only the laser itself.A drive signal generation means is provided which generates a frequency-mixed drive signal mixed from at least two different frequencies f.sub.1 (=N.sub.1 f.sub.r), f.sub.2 (=N.sub.2 f.sub.r), . . . , which are integral multiples of the frequency spacing f.sub.r (=c/R) of the longitudinal modes of either a ring cavity or a Fabry-Perot cavity. This frequency-mixed drive signal is supplied to an optical modulation means of the cavity.
摘要翻译：提出了一种生成高速光脉冲串并可用作光通信和光学测量领域的高速光脉冲源的多频调制锁模激光装置，其中重复频率Frep和脉冲宽度DELTA t只能用激光本身独立控制。提供了一种驱动信号产生装置，其产生从至少两个不同频率f1（= N1fr），f2（= N2fr）混合的频率混合驱动信号。。。，它们是环腔或法布里 - 珀罗腔的纵向模式的频率间隔fr（= c / R）的整数倍。该频率混合驱动信号被提供给空腔的光调制装置。

7. 发明授权

US08964581B2 Bandwidth variable communication method, bandwidth variable communication apparatus, transmission bandwidth determination apparatus, transmission bandwidth determination method, node apparatus, communication path setting system, communication path setting 有权
标题翻译：带宽可变通信方式，带宽可变通信装置，传输带宽确定装置，传输带宽确定方法，节点装置，通信路径设置系统，通信路径设置
公开(公告)号：US08964581B2
公开(公告)日：2015-02-24
申请号：US13395747
申请日：2010-09-13
申请人： Hidehiko Takara , Masahiko Jinno , Atsushi Watanabe , Kozicki Bartlomiej , Yoshiaki Sone , Akira Hirano , Takafumi Tanaka
发明人： Hidehiko Takara , Masahiko Jinno , Atsushi Watanabe , Kozicki Bartlomiej , Yoshiaki Sone , Akira Hirano , Takafumi Tanaka
IPC分类号： H04B10/079 , H04L12/42 , H04J14/02 , H04L12/437
CPC分类号： H04L12/42 , H04B10/0793 , H04B10/07953 , H04J14/02 , H04J14/0204 , H04J14/0212 , H04J14/0213 , H04J14/0217 , H04J14/0221 , H04J14/0224 , H04J14/0254 , H04J14/0257 , H04J14/026 , H04J14/0267 , H04J14/0268 , H04J14/0269 , H04J14/0295 , H04L12/437
摘要： A bandwidth variable communication method is provided that enables effective use of frequency bandwidths in which the bit rate is constant in every optical path. The bandwidth variable communication method includes, when a network management apparatus sets or changes an optical path that passes through plural communication apparatuses, measuring or obtaining an optical signal quality deterioration amount in a route of the optical path; selecting a modulation format in which a spectrum bandwidth is the narrowest from among modulation formats by which transmission is available on conditions of the optical signal quality deterioration amount and a desired bit rate B (bit/s); and exchanging control information between the network management apparatus and a control unit of each communication apparatus on the optical path route. A bandwidth variable communication apparatus receives the control information, and changes a passband based on the received control information.
摘要翻译：提供了一种带宽可变通信方法，其能够有效地使用其中每个光路中的比特率是恒定的频率带宽。带宽可变通信方法包括：当网络管理装置设置或改变通过多个通信装置的光路时，测量或获得光路中的光信号质量恶化量; 在光信号质量恶化量和期望比特率B（比特/秒）的条件下，从调制格式中选择其中频谱带宽最窄的调制格式。并且在光路径上的网络管理装置与各通信装置的控制单元之间交换控制信息。带宽可变通信装置接收控制信息，并根据接收到的控制信息改变通带。

8. 发明申请

US20140270776A1 OPTICAL COMMUNICATION APPARATUS, OPTICAL ROUTE SWITCHING APPARATUS AND NETWORK 有权
标题翻译：光通信设备，光路由切换设备和网络
公开(公告)号：US20140270776A1
公开(公告)日：2014-09-18
申请号：US14009264
申请日：2012-04-26
申请人： Masahiko Jinno , Hidehiko Takara , Kazushige Yonenaga , Akira Hirano , Yoshiaki Sone
发明人： Masahiko Jinno , Hidehiko Takara , Kazushige Yonenaga , Akira Hirano , Yoshiaki Sone
IPC分类号： H04J14/02 , H04Q11/00
CPC分类号： H04J14/0238 , H04J14/0204 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04J14/0217 , H04L27/2697 , H04Q11/0067 , H04Q2011/0086
摘要： An optical communication apparatus, in the sending side, distributes client signals according to destinations and a communication capacity of each destination, electrical-to-optical converts the distributed signals to optical signals having different center frequencies, and multiplexes the optical signals to output, and in the receiving side, the optical communication apparatus divides the wavelength division multiplexed signal to each wavelength (for each sending source), optical-to-electrical converts the divided optical signals to electrical signals, and multiplexes the electrical signals to output. An add/drop port of an optical route switching apparatus includes an input/output port to the optical communication apparatus, and an optical frequency bandwidth is variable according to an optical spectrum width of the optical signal. A network is constructed by using the optical communication apparatus and the optical route switching apparatus.
摘要翻译：发送侧的光通信装置根据目的地和每个目的地的通信容量分配客户端信号，将分布式信号进行电光转换为具有不同中心频率的光信号，并将光信号复用输出，以及在接收侧，光通信装置将波分多路复用信号划分为每个波长（对于每个发送源），光对电转换成电信号，并将电信号多路复用为输出。光路由交换装置的分插口包括到光通信装置的输入/输出端口，并且光频带宽根据光信号的光谱宽度是可变的。通过使用光通信装置和光路转换装置构成网络。

9. 发明申请

US20110164620A1 BANDWIDTH VARIABLE COMMUNICATION APPARATUS AND BANDWIDTH VARIABLE COMMUNICATION METHOD 有权
标题翻译：带宽可变通信设备和带宽可变通信方法
公开(公告)号：US20110164620A1
公开(公告)日：2011-07-07
申请号：US13063640
申请日：2009-09-18
申请人： Masahiko Jinno , Hidehiko Takara , Yukio Tsukishima , Kozicki Bartlomiej , Kazushige Yonenaga , Toshihide Yoshimatsu , Takayuki Kobayashi
发明人： Masahiko Jinno , Hidehiko Takara , Yukio Tsukishima , Kozicki Bartlomiej , Kazushige Yonenaga , Toshihide Yoshimatsu , Takayuki Kobayashi
IPC分类号： H04L12/56
CPC分类号： H04J14/0204 , H04J14/0212 , H04J14/0213 , H04J14/0217 , H04J14/0284 , H04J14/0298 , H04L27/2697
摘要： A bandwidth variable communication apparatus includes: a route exchange unit including a route exchange function for switching an output port of a stream signal of one or more wavelengths input from an input port based on both or a part of wavelength and time, and including a bandwidth change function for changing passable frequency bandwidth in a section from the input port to the output port through which the stream signal passes; and a control unit including a control information transmit-receive function for transmitting and receiving control information for both or a part of the route exchange function and the bandwidth change function of the route exchange unit, and including a control function for controlling the route exchange unit based on the control information. All or a part of the input ports and the output ports are connected to other communication apparatuses via transmission routes.
摘要翻译：带宽可变通信装置包括：路由交换单元，包括路由交换功能，用于基于波长和时间的两个或一部分来切换从输入端口输入的一个或多个波长的流信号的输出端口，并且包括带宽用于在从输入端口到流信号通过的输出端口的部分中改变通过频带宽度的改变功能; 以及控制单元，其包括控制信息发送接收功能，用于发送和接收用于路由交换功能的两个或一部分的控制信息和路由交换单元的带宽改变功能，并且包括用于控制路由交换单元的控制功能基于控制信息。所有或一部分输入端口和输出端口经由传输路由连接到其他通信设备。

10. 发明授权

US07684697B2 Optical signal quality monitoring circuit and optical signal quality monitoring method 有权
标题翻译：光信号质量监控电路和光信号质量监控方法
公开(公告)号：US07684697B2
公开(公告)日：2010-03-23
申请号：US10585532
申请日：2005-06-03
申请人： Ippei Shake , Hidehiko Takara , Atsushi Taniguchi
发明人： Ippei Shake , Hidehiko Takara , Atsushi Taniguchi
IPC分类号： H04B10/08
CPC分类号： H04L1/20 , H04B10/07953
摘要： The present invention provides an optical signal quality monitoring circuit and an optical signal quality monitoring method for measuring correct optical signal quality parameters when a signal bit rate is changed. The optical signal quality monitoring circuit which samples and converts an electrical signal converted from an optical signal with a given repeated frequency f1 to digital sampling data through an analog to digital conversion, thereafter, evaluates an optical signal quality parameter of the optical signal by subjecting sampling data to electrical signal processing in an integrated circuit in which a signal processing function is programmed, receives a control signal notifying that the bit rate of the optical signal is changed, or detects that the bit rate of the optical signal is changed to correct optical the signal quality parameter of the optical signal corresponding to the signal bit rate of the optical signal which is changed.
摘要翻译：本发明提供一种光信号质量监测电路和光信号质量监测方法，用于在信号比特率改变时测量正确的光信号质量参数。光信号质量监测电路对从具有给定重复频率f1的光信号转换成的电信号通过模数转换进行数字采样数据进行采样和转换，此后通过对采样信号进行采样来评估光信号的光信号质量参数在其中对信号处理功能进行编程的集成电路中的电信号处理的数据接收通知光信号的比特率改变的控制信号，或者检测到光信号的比特率被改变以校正光信号对应于改变的光信号的信号比特率的光信号的信号质量参数。

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