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1. 发明专利

JP2007067759A Optical branching and inserting switch 有权
标题翻译：光学分支和插入开关
公开(公告)号：JP2007067759A
公开(公告)日：2007-03-15
申请号：JP2005250484
申请日：2005-08-31
申请人： Nippon Telegr & Teleph Corp , Ntt Electornics Corp , Nttエレクトロニクス株式会社 , 日本電信電話株式会社
发明人： GO TAKASHI , TAKAHASHI TETSUO , HASEGAWA YUTAKA , TAKACHIO NOBORU
IPC分类号： H04B10/07 , H04B10/079 , H04B10/27 , H04B10/291 , H04J14/00 , H04J14/02
摘要： PROBLEM TO BE SOLVED: To provide an optical branching and inserting switch, wherein the scale of a monitor circuit for measuring an optical power is small. SOLUTION: A control circuit 225 stores drive currents I 222 , I 223 of variable optical attenuators 222, 223 and an insertion loss from a through port (ThrIn) to an output port (Out) and from an add port (Add) to the output port by each wavelength, and the control circuit calculates the optical power of a signal light in the through port, the optical power of a signal light in the add port, and the optical power of a signal light with each wavelength at an output of an optical multiplexer 203 on the basis of the optical power measured by a photodetector 227 and the drive currents and the insertion loss stored in the control circuit itself. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种光分路和插入开关，其中用于测量光功率的监视电路的规模小。解决方案：控制电路225存储可变光衰减器222,223的驱动电流I 222，I 223 和从通孔（ThrIn）到插入损耗的插入损耗输出端口（Out）和从每个波长的输出端口添加端口（Add），并且控制电路计算通孔中的信号光的光功率，加法端口中的信号光的光功率基于由光电检测器227测量的光功率和存储在控制电路本身中的驱动电流和插入损耗，在光复用器203的输出处的每个波长的信号光的光功率。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2005287076A Remote excitation optical fiber communication system 有权
标题翻译：远程激光光纤通信系统
公开(公告)号：JP2005287076A
公开(公告)日：2005-10-13
申请号：JP2005135158
申请日：2005-05-06
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： MASUDA KOJI , TAKACHIO NOBORU
IPC分类号： H01S3/06 , H01S3/067 , H04B10/29 , H04B10/291 , H04J14/00 , H04J14/02 , H04B10/16 , H04B10/17
摘要： PROBLEM TO BE SOLVED: To provide a remote excitation optical fiber communication system and optical fiber module in which a gain bandwidth can be expanded and gain stabilization can be achieved. SOLUTION: In a remote excitation optical fiber communication system wherein wavelength multiplexed signal light is amplified by a rare earth added fiber module and transmitted by a transmission fiber, a plurality of rare earth added fibers are simultaneously excited in the rare earth added fiber module, thereby including a great gain bandwidth matching gain bandwidths of a plurality of wavelength bands. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种远程激励光纤通信系统和光纤模块，其中可以扩展增益带宽并且可以实现增益稳定。解决方案：在其中波长多路复用信号光被稀土添加的光纤模块放大并由传输光纤传输的远程激励光纤通信系统中，多种稀土添加的光纤在稀土添加的光纤中同时激发模块，从而包括与多个波长带的增益带宽匹配的大增益带宽。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2002374207A Optical wavelength multiplex transmitter 有权
标题翻译：光波长多路复用发射机
公开(公告)号：JP2002374207A
公开(公告)日：2002-12-26
申请号：JP2001179167
申请日：2001-06-13
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： TAKACHIO NOBORU , ARAYA KATSUHIRO , KANI JUNICHI , IWATSUKI KATSUMI , TEJIMA MITSUHIRO , FUJIWARA MASAMITSU
IPC分类号： H04B10/03 , H04B10/032 , H04B10/07 , H04B10/40 , H04B10/50 , H04B10/516 , H04B10/572 , H04B10/60 , H04B10/02 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/26 , H04B10/28
摘要： PROBLEM TO BE SOLVED: To provide an optical wavelength multiplex transmitter that uses multi wavelength simultaneous generating light sources of the previous application to generate a multi wavelength light, splits the multi-wavelength light, respectively modulates the wavelength lights by a plurality of optical modulators and applies wavelength multiplexing to the modulated signal lights and provides an output, and has enhanced reliability with a redundant configuration of the multi-wavelength simultaneous generating light sources. SOLUTION: The optical wavelength multiplex transmitter is provided with a plurality of the multi-wavelength simultaneous generating light sources (each comprising a light-generating section 10 and a multi-wavelength modulation section 20) of the previous application and uses an optical switch to select one of them and connects the selected multi-wavelength simultaneous generating light source to an optical modulation section 3.
摘要翻译：要解决的问题：为了提供使用先前应用的多波长同时产生光源的光波长多路复用发射机来产生多波长光，分离多波长光，分别通过多个光学调制器调制波长的光，以及将波长复用应用于调制信号光并提供输出，并且通过多波长同时生成光源的冗余配置提高了可靠性。解决方案：光波长多路复用发射机设有多个先前应用的多波长同时生成光源（各自包括发光部10和多波长调制部20），并使用光开关选择其中一个并将所选择的多波长同时产生光源连接到光调制部分3。

4. 发明专利

JP2004361979A Raman amplifier and optical communication system 有权
公开(公告)号：JP2004361979A
公开(公告)日：2004-12-24
申请号：JP2004249499
申请日：2004-08-30
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： MASUDA KOJI , SUZUKI HIROO , TAKACHIO NOBORU
IPC分类号： G02F1/35 , H01S3/042 , H01S3/06 , H01S3/094 , H01S3/131
摘要： PROBLEM TO BE SOLVED: To reduce variation of gain and to reduce variation of gain for every gain medium fiber in a Raman amplifier and an optical communication system using the Raman amplifier. SOLUTION: The Raman amplifier Raman amplifies incident signal light and has an optical fiber which is a gain medium of Raman amplification, a pump light source to pump the optical fiber, a wavelength-multiplexer to wavelength-multiplex pump light from the pump light source and the signal light, a probe light source with a wavelength in a gain wavelength range of the Raman amplification, a wavelength-multiplexer to wavelength-multiplex probe light from the probe light source and the signal light, a branching filter to branch filtrate the probe light passed through the optical fiber and the signal light, and a light receiving means to receive the branch filtrated probe light. Besides the Raman amplifier is equipped with a gain detecting means to detect the Raman gain of the Raman amplifier and a control circuit to electrically drive the pump light source based on the detected gain value obtained with the gain detecting means and the control circuit keeps the Raman gain constant. COPYRIGHT: (C)2005,JPO&NCIPI

5. 发明专利

JP2003069502A Multiple-wavelength optical modulation circuit and wavelength-multiplexing optical signal transmission apparatus 有权
标题翻译：多波长光学调制电路和波长复用光信号传输装置
公开(公告)号：JP2003069502A
公开(公告)日：2003-03-07
申请号：JP2002167075
申请日：2002-06-07
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： KANI JUNICHI , ARAYA KATSUHIRO , TAKACHIO NOBORU , AKIMOTO KOJI , TEJIMA MITSUHIRO , FUJIWARA MASAMITSU , SUZUKI HIROO , KAWAI SHINGO , IWATSUKI KATSUMI
IPC分类号： G02F1/01 , G02F1/015 , G02F1/31 , G02F2/02 , H01S3/10 , H04B10/25 , H04B10/294 , H04B10/297 , H04B10/40 , H04B10/50 , H04B10/516 , H04B10/54 , H04B10/548 , H04B10/564 , H04B10/572 , H04B10/58 , H04B10/60 , H04B10/61 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/142 , H04B10/152 , H04B10/26 , H04B10/28
摘要： PROBLEM TO BE SOLVED: To demultiplex multiple wavelength light having bandwidths more than the free spectral range (FSR) of an arrayed-waveguide grating (AWG) into individual wavelength channels, and suppress power level deviation between each wavelength channels. SOLUTION: A demultiplexer is constituted of a group demultiplexer 31 which demultiplexes the multiple wavelength light into wavelength groups each having a plurality of wavelength channels, and a plurality of channel demultiplexers 32-1 through 32-m which demultiplex each wavelength group into light containing a plurality of wavelength channels. A multiplexer is constituted of a plurality of channel multiplexers 34-1 through 34-m which multiplex modulation signal light of each wavelength channel on a wavelength group-by-group basis, and a group multiplexer 35 which multiplexes the wavelength-multiplexed signal light in each wavelength group output from each channel multiplexer. The FSR of the group multiplexer/demultiplexer is set more than the bandwidth of the multiple wavelength light. As a channel multiplexer/ demultiplexer, there is employed an AWG of which FSR is approximately full width at half maximum (FWHM) of transmission characteristic of each port in the group multiplexer/demultiplexer.
摘要翻译：要解决的问题：将具有大于阵列波导光栅（AWG）的自由光谱范围（FSR）的带宽的多个波长的光解复用到各个波长信道中，并且抑制每个波长信道之间的功率电平偏差。解决方案：解复用器由将多个波长光多路复用成各具有多个波长信道的波长组的分组多路复用器31和多个信道解复用器32-1至32-m组成，该多路复用器将每个波长组解复用为含有多个波长通道。多路复用器由多个信道多路复用器34-1至34-m组成，多个信号多路复用器34-1至34-m对每个波长信道的调制信号光进行多个波分复用，以及组多路复用器35将多路复用信号光每个波长组从每个通道多路复用器输出。组多路复用器/解复用器的FSR被设置为多于多个波长光的带宽。作为信道多路复用器/解复用器，采用其中FSR在组多路复用器/解复用器中的每个端口的传输特性的半高近似全宽（FWHM）的AWG。

6. 发明专利

JP2003042906A Instrument for measuring optical snr, optical transmission device, and optical communication system 有权
标题翻译：用于测量光信号的仪器，光传输设备和光通信系统
公开(公告)号：JP2003042906A
公开(公告)日：2003-02-13
申请号：JP2001232595
申请日：2001-07-31
申请人： Mitsubishi Electric Corp , Nippon Telegr & Teleph Corp , 三菱電機株式会社 , 日本電信電話株式会社
发明人： SHIMIZU KATSUHIRO , SUGIHARA TAKASHI , KOBAYASHI YUKIO , MIZOGUCHI TAKAHIRO , AMAMIYA MASAKI , FUJIWARA MASAMITSU , TAKACHIO NOBORU , IWATSUKI KATSUMI
IPC分类号： G01J1/44 , G01M11/02 , G02F1/01
摘要： PROBLEM TO BE SOLVED: To easily and precisely measure optical SNR, even when a plurality of light signals run parallel to a narrow wavelength interval. SOLUTION: There are provided a switch 5 for turning on and off impression to a light modulator 2 of a modulation signal, a bias control circuit 8 for conducting regulation to make intensity of modulated light output, by switching of the light modulator 2 according to an on-off operation of the switch 5 with the intensity of non-modulated light which is not modulated therein, and an optical SNR measuring circuit 13 for calculation the ratio of light signal intensity of the modulated light to optical noise intensity thereof, using both or either value(s) of light signal intensity of the non-modulated light and/or optical noise intensity thereof regulated by the bias control circuit 8.
摘要翻译：要解决的问题：即使当多个光信号平行于窄波长间隔延伸时，为了容易且精确地测量光学SNR。解决方案：提供一个开关5，用于对调制信号的光调制器2打开和关闭印象;偏置控制电路8，用于通过根据光调制器2的切换进行调制以调制调制光的输出强度开关5的非调制光的强度未被调制的开关5的开 - 关动作以及用于计算调制光的光信号强度与其光噪声强度的比率的光SNR测量电路13，使用两者或非调制光的光信号强度的值和/或由偏置控制电路8调节的光噪声强度的值。

7. 发明专利

JP2003315739A Polarization scrambler 有权
标题翻译：极化SCRAMBLER
公开(公告)号：JP2003315739A
公开(公告)日：2003-11-06
申请号：JP2003044959
申请日：2003-02-21
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： FUJIWARA MASAMITSU , TEJIMA MITSUHIRO , TAKACHIO NOBORU , IWATSUKI KATSUMI
IPC分类号： G02F1/01 , G02B27/28 , H04B10/2507 , H04B10/516 , H04B10/54 , H04B10/61 , H04B10/02 , H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152 , H04B10/18
摘要： PROBLEM TO BE SOLVED: To generate light with the degree of polarization zeroed and the spread of an optical spectrum suppressed even with temporal overlapping between optical pulses each of which is polarized orthogonally to the succeeding pulse.
SOLUTION: A polarization scrambler is provided with an optical pulse generator that generates optical pulses with an intensity waveform repetition period T/2 and an electrical field period T in which the same intensity waveform is repeated every repetition period T/2 and in which phase is inverted every repetition period T/2, and an orthogonal polarization delay unit which receives each of the optical pulses, separates the optical pulse into two optical pulses with orthogonal states of polarization, and relatively shifts the temporal position of one of the two optical pulses from that of the other optical pulse by (2n-1) T/4 (n is a natural number) to generate light in which each pulse is polarized orthogonally to a succeeding pulse.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了产生具有偏振度归零的光，并且即使在光脉冲之间的时间重叠也抑制光谱的扩展，每个光脉冲与后续脉冲正交地偏振。解决方案：偏振加扰器设置有产生具有强度波形重复周期T / 2和电场周期T的光脉冲的光脉冲发生器，其中每重复周期T / 2重复相同的强度波形，并且在每个重复周期T / 2对该相位进行反相，以及接收每个光脉冲的正交偏振延迟单元，将光脉冲分离成具有正交偏振态的两个光脉冲，并相对地移动两个通过（2n-1）T / 4（n是自然数）的另一个光脉冲的光脉冲，产生其中每个脉冲与后续脉冲正交极化的光。版权所有（C）2004，JPO

8. 发明专利

JP2009069525A Optical power control circuit 审中-公开
标题翻译：光功率控制电路
公开(公告)号：JP2009069525A
公开(公告)日：2009-04-02
申请号：JP2007238402
申请日：2007-09-13
申请人： Ntt Electornics Corp , Nttエレクトロニクス株式会社
发明人： TACHIBANA MASAHIRO , YAMAGUCHI HIDEKI , HASEGAWA YUTAKA , TAKACHIO NOBORU
IPC分类号： G02B26/02 , G02F1/03
摘要： PROBLEM TO BE SOLVED: To provide an optical power control circuit capable of preventing cost from increasing, a noise from being mixed and control time from increasing. SOLUTION: A control device 11 controls optical powers of light signals in response to control voltages Va-Vd (control parameters). A photo-electric conversion circuit 12 converts optical output signals from the control device 11 into electric signals. An amplifier 13 having a log characteristic amplifies the output signals from the photo-electric conversion circuit 12. Partial differentiation circuits 14a-14d partially differentiate output signals from the amplifier 13, respectively, by the control voltages Va-Vd. Parameter generation circuits 15a-15d computation-process, respectively, outputs from the partial differentiation circuits 14a-14d to generate respectively the control voltages Va-Vd. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够防止成本增加，混合噪声和控制时间增加的光功率控制电路。解决方案：控制装置11响应于控制电压Va-Vd（控制参数）控制光信号的光功率。光电转换电路12将来自控制装置11的光输出信号转换为电信号。具有对数特性的放大器13放大来自光电转换电路12的输出信号。局部微分电路14a-14d分别通过控制电压Va-Vd区分来自放大器13的输出信号。参数产生电路15a-15d分别计算处理来自偏微分电路14a-14d的输出，分别产生控制电压Va-Vd。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2005333264A Single-core bidirectional optical wavelength multiplex transmission system and transceiver 有权
标题翻译：单芯双向光波导多路传输系统和收发器
公开(公告)号：JP2005333264A
公开(公告)日：2005-12-02
申请号：JP2004148247
申请日：2004-05-18
申请人： Ntt Electornics Corp , エヌティティエレクトロニクス株式会社
发明人： NISHI SHIGETO , YAMABAYASHI YOSHIAKI , TAKACHIO NOBORU , SATO YUICHI
IPC分类号： H04B10/00 , H04B10/2507 , H04B10/2563 , H04B10/27 , H04B10/29 , H04J14/00 , H04J14/02 , H04B10/02 , H04B10/18 , H04B10/24
摘要： PROBLEM TO BE SOLVED: To alleviate deterioration of light signals due to four-light wave mixture occurring among the light signals in a single-core bidirectional optical wavelength multiplex transmission system for transmitting and receiving the light signals with equal wavelength intervals by a single-core optic fiber.
SOLUTION: The single-core bidirectional wavelength multiplex transmission system and a transceiver used in the system transmit the light signals with approximately equal wavelength intervals to be transmitted on the single-core optical fiber to be sent and received in transmission directions different for each of a plurality of consecutive wavelength sets. For example, when the light signals of the same wavelength interval with wavelengths L1-L12 in a line in the ascending order of the wavelengths are to be transmitted via the optical fiber, the light signals L1, L2, L3, L7, L8 and L9 are transmitted in one direction, and the light signals L4, L5, L6, L10, L11 and L12 are transmitted in the opposite direction. Thus, the sets of the light signals are arranged with their wavelengths alternately in up and down directions.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了减轻在单核双向光波长多路复用传输系统中在光信号之间发生的四光波混合的光信号的劣化，用于通过一个等距波长间隔发送和接收光信号单芯光纤。解决方案：单核双向波长多路复用传输系统和系统中使用的收发器以大致相等的波长间隔传输光信号，以在单芯光纤上传输，以在传输方向发送和接收不同于多个连续波长组中的每一个。例如，当波长上升的一行中的波长为L1-L12的相同波长间隔的光信号将通过光纤传输时，光信号L1，L2，L3，L7，L8和L9 沿一个方向发送，并且光信号L4，L5，L6，L10，L11和L12沿相反方向发送。因此，这些光信号的组合以其上下方向交替布置。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2005079659A Apparatus and network for wavelength routing 有权
标题翻译：波长路由的设备和网络
公开(公告)号：JP2005079659A
公开(公告)日：2005-03-24
申请号：JP2003304808
申请日：2003-08-28
申请人： Ntt Electornics Corp , エヌティティエレクトロニクス株式会社
发明人： NISHI SHIGETO , YAMABAYASHI YOSHIAKI , TAKACHIO NOBORU , FUJISAKI KOICHI
IPC分类号： H04B10/27 , H04B10/291 , H04J14/00 , H04J14/02 , H04B10/02
摘要： PROBLEM TO BE SOLVED: To solve the problem in a wavelength multiplex transmission system that the merit of the wavelength multiplex transmission system cannot be utilized when signals having different information quantities from one node to a plurality of other nodes, because each node can use only one wavelength channel for transmitting the signals with each other in a conventional wavelength routing apparatus, although a wavelength routing apparatus using a cyclic AWG is applied because lights of a plurality of wavelengths are transmitted through a single optical fiber to form a full-mesh type network configuration. SOLUTION: In the wavelength routing apparatus provided with a cyclic arrayed waveguide grating having M (M: integer of two or more) pieces input ports and M pieces of output ports, p(p: integer of less than M) pieces of output ports are connected to p pieces of input ports one to one. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题为了解决波长多路复用传输系统中的问题，即当从一个节点到多个其他节点的信息量不同的信号时，波长复用传输系统的优点不能被利用，因为每个节点可以尽管使用了使用循环AWG的波长路由设备，因为使用多个波长的光通过单个光纤传输以形成全网格，但是在常规波长路由设备中仅使用一个波长信道来彼此传输信号键入网络配置。解决方案：在具有M（M：两个或更多个整数）个输入端口和M个输出端口的循环阵列波导光栅的波长路由设备中，p（p：小于M的整数）个输出端口一对一连接到p个输入端口。版权所有（C）2005，JPO＆NCIPI

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