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11. 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。

12. 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

13. 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。

14. 发明授权

US07151897B2 Optical clock phase-locked loop circuit 失效
标题翻译：光时钟锁相环电路
公开(公告)号：US07151897B2
公开(公告)日：2006-12-19
申请号：US10310086
申请日：2002-12-04
申请人： Takuya Ohara , Hidehiko Takara , Satoki Kawanishi
发明人： Takuya Ohara , Hidehiko Takara , Satoki Kawanishi
IPC分类号： H04B10/00 , H04B10/08 , H04B17/00
CPC分类号： H04L7/0075
摘要： This optical clock phase-locked loop circuit includes an oscillator 12, an optical coupler 2, an optical cross-correlation detection device 3 that outputs light containing the correlating components of two lights from the coupled light of optical coupler 2, an optical band pass filter 4 that extracts light of a wavelength that contains cross-correlating components, an optical receiver 5, a phase comparator 6 that compares the phases of the output signal of the oscillator 12 and the cross-correlation signal from the optical receiver 5, a voltage controlled oscillator 7 that changes the oscillation frequency and phase corresponding to the output of the phase comparator 6, an optical pulse generator 8 that generates a optical clock pulse containing an nth harmonic component, an optical coupler 10 that divides optical clock, and an optical modulator 11 driven by low-frequency oscillator 12 that modulates optical clock from optical coupler 10.
摘要翻译：该光时钟锁相环电路包括振荡器12，光耦合器2，光互相关检测装置3，其从光耦合器2的耦合光输出包含两个光的相关分量的光，光学带通滤波器提取包含互相关分量的波长的光，光接收器5，比较振荡器12的输出信号的相位和来自光接收器5的互相关信号的相位比较器6，电压控制振荡器7，其改变与相位比较器6的输出相对应的振荡频率和相位;产生包含第n次谐波分量的光时钟脉冲的光脉冲发生器8，分割光时钟的光耦合器10和光调制器11 由调制来自光耦合器10的光时钟的低频振荡器12驱动。

15. 发明授权

US06671444B1 Optical fiber 有权
标题翻译：光纤
公开(公告)号：US06671444B1
公开(公告)日：2003-12-30
申请号：US09763850
申请日：2001-05-21
申请人： Shinichi Arai , Takeshi Yagi , Kunihiko Mori , Hidehiko Takara , Satoki Kawanishi
发明人： Shinichi Arai , Takeshi Yagi , Kunihiko Mori , Hidehiko Takara , Satoki Kawanishi
IPC分类号： G02B602
CPC分类号： G02B6/02004 , G02B6/02242 , G02B6/03627 , G02B6/105 , G02F1/3555 , G02F1/365 , G02F2201/02 , G02F2203/06 , H01S3/302
摘要： An optical fiber, capable of generating by means of nonlinear phenomena, white light in adequately broadened wavelength bands at both sides of a pumping optical pulse that is input, and stabilizing the polarized conditions. The fiber is formed by covering a core with a first cladding, and covering the first cladding with a second cladding, where the second cladding has a refractive index greater than that of the first cladding, but lower than that of the core. Stress-applying parts are provided inside the second cladding so as to sandwich the core from both sides to form a polarization-maintaining optical fiber. The shortest distance between the stress-applying parts is made 2.3 times or more the mode field diameter for the wavelength of the pumping optical pulse.
摘要翻译：能够通过非线性现象产生的光纤，在输入的泵浦光脉冲的两侧上的白光充分变宽的波长带，并稳定极化条件。纤维通过用第一包层覆盖芯并且用第二包层覆盖第一包层而形成，其中第二包层的折射率大于第一包层的折射率，但是低于芯的折射率。应力施加部件设置在第二包层内部，以便从两侧夹住芯部以形成偏振保持光纤。应力施加部之间的最短距离为泵浦光脉冲的波长的模场直径的2.3倍以上。

16. 发明授权

US6154309A Complementary optical sampling waveform measuring apparatus and polarization beam splitter which can be assembled therein 失效
标题翻译：可以组装在其中的互补光采样波形测量装置和偏振分束器
公开(公告)号：US6154309A
公开(公告)日：2000-11-28
申请号：US154445
申请日：1998-09-16
申请人： Akihito Otani , Toshinobu Otsubo , Hidehiko Takara , Satoki Kawanishi
发明人： Akihito Otani , Toshinobu Otsubo , Hidehiko Takara , Satoki Kawanishi
IPC分类号： G01J11/00 , G02F1/37 , G02F1/35
CPC分类号： G02B27/283 , G01J11/00
摘要： A sampling light source generates a pulse sequence of sampling light having a pulse width smaller than that of target light and a single plane of polarization. A polarization beam splitting unit splits each of the sampling light output from the sampling light source, and the target light into two light components having planes of polarization shifted 90.degree. from each other, multiplexes each pair of split sampling and target light components having planes of polarization shifted 90.degree. from each other, and outputs the respective multiplexed light components to different optical paths. A pair of nonlinear optical members each generate a cross-correlation signal based on the sampling and target light components output from the polarization beam splitting unit to each optical path and having planes of polarization shifted 90.degree. from each other as sum frequency light. A pair of photodetectors each convert the sum frequency light output from each of the pair of nonlinear optical members into an electrical signal. A signal processing unit adds the electrical signals output from the pair of photodetectors, processes the resultant electrical signal, and displays its pulse waveform. With this operation, the pulse waveform of the target light can be accurately measured regardless of variations in the polarized state of the target light.
摘要翻译：采样光源产生采样光的脉冲序列，其脉冲宽度小于目标光和单一偏振平面。偏振光束分离单元将从采样光源输出的采样光中的每一个分离，并将目标光分成具有彼此偏移90°的偏振面的两个光分量，将每对分离采样和目标光分量复用为具有偏振偏移90°，并将各复用光分量输出到不同的光路。一对非线性光学部件基于从偏振光束分离单元向每个光路输出的采样和目标光分量产生互相关信号，并且具有彼此偏移90°的偏振平面作为和频光。一对光电检测器将从每对非线性光学部件的每一个输出的和频率光转换为电信号。信号处理单元将从一对光检测器输出的电信号相加，处理所得的电信号，并显示其脉冲波形。通过该操作，无论目标光的偏振状态的变化如何，都可以精确地测量目标光的脉搏波形。

17. 发明授权

US5995228A Wavelength dispersion measuring apparatus and polarization dispersion measuring apparatus 失效
标题翻译：波长色散测量装置和偏振色散测量装置
公开(公告)号：US5995228A
公开(公告)日：1999-11-30
申请号：US250089
申请日：1999-02-16
申请人： Akihito Otani , Toshinobu Otsubo , Hidehiko Takara , Satoki Kawanishi , Yoshiaki Yamabayashi
发明人： Akihito Otani , Toshinobu Otsubo , Hidehiko Takara , Satoki Kawanishi , Yoshiaki Yamabayashi
IPC分类号： G01M11/02 , G01J4/00 , G01J7/00 , G01J9/02 , G01M11/00 , G01J4/04
CPC分类号： G01M11/336 , G01J4/00 , G01J7/00 , G01M11/332 , G01M11/335 , G01J2009/0261
摘要： A first tunable wavelength pulse light source is driven by a reference signal to emit a first optical pulse. An optical demultiplexer demultiplexes a first optical pulse emitted from the first pulse light source into a reference optical pulse and an incident optical pulse to be sent into an object to be measured. An optical multiplexer multiplexes the reference optical pulse and an outgoing optical pulse passing through the object to output multiplexed light. A second pulse light source generates a second optical pulse which is synchronous with the first optical pulse and delays a predetermined time for each period of the first optical pulse. A sampling unit receives the multiplexed light and the second optical pulse to obtain an optical pulse train signal proportional to the intensity of the multiplexed light obtained in synchronism with the second optical pulse. From the optical pulse train signal from the sampling unit, a signal processor obtains an envelope formed by peaks of individual optical pulses forming the optical pulse train. The wavelength dispersion of the object is obtained by measuring the delay time of the outgoing optical pulse passing through the object on the basis of intervals between the peaks of the envelope.
摘要翻译：第一可调波长脉冲光源由参考信号驱动以发射第一光脉冲。光解复用器将从第一脉冲光源发射的第一光脉冲解复用为参考光脉冲和入射光脉冲，以发送到待测物体中。光复用器复用参考光脉冲和通过物体的输出光脉冲以输出多路复用光。第二脉冲光源产生与第一光脉冲同步的第二光脉冲，并延迟第一光脉冲的每个周期的预定时间。采样单元接收复用光和第二光脉冲，以获得与与第二光脉冲同步获得的多路复用光的强度成比例的光脉冲串信号。从采样单元的光脉冲信号中，信号处理器获得由形成光脉冲串的各个光脉冲的峰值形成的包络。通过基于信封的峰值之间的间隔测量通过物体的输出光脉冲的延迟时间来获得物体的波长色散。

18. 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。

19. 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。

20. 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。

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