公开(公告)号：US06907172B2

公开(公告)日：2005-06-14

申请号：US10228267

申请日：2002-08-27

申请人： Toshiaki Okuno ,  Masayuki Nishimura

发明人： Toshiaki Okuno ,  Masayuki Nishimura

IPC分类号： G02B6/036 ,  G02B6/02 ,  G02B6/34 ,  G02F1/35 ,  H04B10/2507 ,  H04B10/2525 ,  H04B10/2563 ,  H04B10/2569 ,  H04B10/294 ,  H04B10/297 ,  G02B6/20

CPC分类号： G02B6/02019 ,  G02B6/02247 ,  G02B6/03611 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/29377 ,  H04B10/25253 ,  H04B10/2916 ,  H04B2210/003

摘要： An optical communication system has a configuration in which an optical transmission line is laid between a repeater (transmitter) and another repeater (receiver). The optical transmission line is formed by fusion-splicing a first optical fiber on the upstream side and a second optical fiber on the downstream side. The first optical fiber has a transmission loss of 0.25 dB or less, and an effective area of 80 μm2 or above (preferably 100 μm2 or above), at a wavelength of 1550 nm, which is the wavelength of signal light. The second optical fiber is connected to the downstream end of the first optical fiber and has positive dispersion regions and negative dispersion regions which are alternately arranged along the longitudinal direction and whose chromatic dispersions at a wavelength of 1550 nm are positive and negative, respectively.

摘要翻译： 光通信系统具有在中继器（发射机）与另一个中继器（接收机）之间铺设光传输线路的结构。 光传输线通过在上游侧熔接第一光纤和在下游侧熔接第二光纤而形成。 第一光纤的波长为传输损耗为0.25dB以下，有效面积为80μm以上（优选为100μm以上），优选为100nm以上。 为1550nm，这是信号光的波长。 第二光纤连接到第一光纤的下游端，并且具有正的色散区域和负色散区域，它们沿纵向方向交替布置，并且其在1550nm的波长上的色散分别为正和负。

公开(公告)号：US08385743B2

公开(公告)日：2013-02-26

申请号：US09781564

申请日：2001-02-13

申请人： Toshiaki Okuno ,  Masayuki Nishimura

发明人： Toshiaki Okuno ,  Masayuki Nishimura

IPC分类号： H04J14/02

CPC分类号： H04B10/296 ,  H04J14/0221

摘要： Signal wavelengths λ1, λ2, λ3 of signal light components multiplexed at signal multiplexing sections 31, 41, 51 of multiplexing stations 3, 4, 5 installed on the input end side of an EDFA 2 on an optical transmission line 1 are set such that the wavelength-dependent noise figure of EDFA 2 successively decreases from the signal wavelength λ1 multiplexed at the signal multiplexing section 31 closest to the input end of EDFA 2 to λ2 and λ3. On the other hand, the transmission length of individual signal light component before being fed into the EDFA 2 is the shortest in the signal light component at λ1 and successively increases at λ2 and λ3. Thus, the order of magnitude of input signal light power is the same as the order of highness of noise figure in EDFA 2, whereby fluctuations in S/N ratio in the resulting amplified light are reduced.

摘要翻译： 信号光分量的信号波长λ1，λ2，λ3被复用在安装在光传输线路1上的EDFA2的输入端侧的复用站3,4,5的信号多路复用部分31,41,51处， EDFA2的与波长相关的噪声系数从最靠近EDFA2的信号复用部分31多路复用的信号波长λ1连续减小到λ2和λ3。 另一方面，馈送到EDFA2中的各个信号光分量的发送长度在λ1的信号光分量中最短，并且在λ2和λ3处依次增加。 因此，输入信号光功率的数量级与EDFA2中的噪声系数高的顺序相同，从而降低了所得放大的光的S / N比的波动。

公开(公告)号：US06763194B2

公开(公告)日：2004-07-13

申请号：US09757580

申请日：2001-01-11

申请人： Toshiaki Okuno ,  Masayuki Nishimura

发明人： Toshiaki Okuno ,  Masayuki Nishimura

IPC分类号： H04J1402

CPC分类号： H04J14/0221 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/028

摘要： The present invention relates to an optical transmission system and a channel assigning method with structure to reduce dispersion of power levels among signals dropped at respective signal branchpoints on an optical transmission line out of signals of multiple channels amplified in an optical amplifier. The optical transmission system has an optical transmission line in which signals of multiple channels propagate, an optical amplifier provided on the transmission line, and a plurality of signal branchpoints disposed on the downstream transmission line in which the signals of the channels outputted from the optical amplifier propagate. Each of the signal branchpoints drops a signal of a channel with a lowest power level out of arriving signals in the channels. This reduces the dispersion of power levels among signals dropped at the respective branchpoints, as a whole of the optical transmission system.

摘要翻译： 本发明涉及一种光传输系统和信道分配方法，其结构是在光放大器中放大的多个信道的信号上，在光传输线上的各个信号分支点处降低的信号中降低功率电平的色散。 光传输系统具有传输多个信道的光传输线，设置在传输线上的光放大器以及设置在下行传输线上的多个信号分支点，其中从光放大器输出的信道的信号 传播。 每个信号分支点从信道中的到达信号中丢弃具有最低功率电平的信道的信号。 这降低了作为整个光传输系统在相应分支点处丢弃的信号之间功率电平的分散。

公开(公告)号：US06724525B2

公开(公告)日：2004-04-20

申请号：US09788659

申请日：2001-02-21

申请人： Toshiaki Okuno ,  Eisuke Sasaoka ,  Masayuki Nishimura ,  Shigeru Tanaka

发明人： Toshiaki Okuno ,  Eisuke Sasaoka ,  Masayuki Nishimura ,  Shigeru Tanaka

IPC分类号： H01S300

CPC分类号： H01S3/302 ,  H01S3/0014 ,  H01S3/06754 ,  H01S3/1301 ,  H01S3/1305

摘要： Disclosed are an optical transmission system and a Raman amplifying control unit that can stabilize the effective loss of a transmission line even if the optical transmission system has a relay station between a transmitting station and a receiving station. The optical transmission system and the Raman amplifying control unit have an introducing means for outputting inspection light and introducing it to the transmission line, a receiving means for receiving the back-scatter from the inspection light, and a control means for inspecting the transmission line and controlling an exciting light supplying means according to the received backscattering light. The introducing means, the receiving means, and the control means are provided together with the exciting light supplying means in a station at the transmitting side or receiving side of a relay section in the optical transmission system.

摘要翻译： 公开了一种光传输系统和拉曼放大控制单元，其即使光传输系统在发射站和接收站之间具有中继站，也可以稳定传输线的有效损耗。 光传输系统和拉曼放大控制单元具有用于输出检查光并将其引入传输线的引入装置，用于从检查光接收反向散射的接收装置和用于检查传输线的控制装置和 根据所接收的反向散射光控制激励光供给装置。 引导装置，接收装置和控制装置与光传输系统中的中继部的发送侧或接收侧的站中的激励光供给装置一起设置。

公开(公告)号：US07085040B2

公开(公告)日：2006-08-01

申请号：US10834189

申请日：2004-04-29

申请人： Toshiaki Okuno ,  Masayuki Nishimura

发明人： Toshiaki Okuno ,  Masayuki Nishimura

IPC分类号： H04B10/13 ,  H04B10/17

CPC分类号： H01S3/22 ,  H01S3/06754 ,  H01S3/094011 ,  H01S3/107 ,  H01S3/30 ,  H01S3/302

摘要： The present invention relates to an optical transmission line enabling Raman amplification of an optical signal when pumping light is supplied thereto, a method of making this optical transmission line, and an optical transmission system using this optical transmission line. This optical transmission line is an optical transmission line enabling Raman amplification of an optical signal when pumping light is supplied thereto, wherein a region yielding the maximum value of Raman gain coefficient is separated from an end portion where the pumping light is supplied by a predetermined distance along a direction in which the pumping light advances. This optical transmission line can restrain the power of optical signal, at any point of the optical transmission line, from increasing to such an extent that optical Kerr effects occurs remarkably and from decreasing to such an extent that the SN ratio deteriorates greatly, and can fully secure the power of optical signal at the end point of the optical transmission line.

摘要翻译： 本发明涉及一种能够提供泵浦光时能够进行光信号的拉曼放大的光传输线路，制造该光传输线路的方法以及使用该光传输线路的光传输系统。 该光传输线是当向其提供泵浦光时能够对光信号进行拉曼放大的光传输线，其中产生拉曼增益系数的最大值的区域与泵送光被提供预定距离的端部分离 沿着泵浦光前进的方向。 该光传输线可以抑制在光传输线的任何点的光信号的功率增加到光学克尔效应显着地发生并且从降低到使SN比大大降低的程度的程度，并且可以完全 在光传输线路的终点处确保光信号的功率。

公开(公告)号：US06892003B2

公开(公告)日：2005-05-10

申请号：US10114321

申请日：2002-04-03

申请人： Makoto Katayama ,  Toshiaki Okuno ,  Masayuki Nishimura ,  Tomomi Sano ,  Masakazu Shigehara ,  Hiroshi Suganuma ,  Toru Iwashima ,  Tomohiko Kanie

发明人： Makoto Katayama ,  Toshiaki Okuno ,  Masayuki Nishimura ,  Tomomi Sano ,  Masakazu Shigehara ,  Hiroshi Suganuma ,  Toru Iwashima ,  Tomohiko Kanie

IPC分类号： H04B10/18 ,  G02B6/26 ,  G02B6/35 ,  H04J14/02

CPC分类号： H04B10/25133

摘要： An optical signal, which is to become the subject of dispersion compensation, is split by optical combining/splitting unit 2, and each frequency component of the optical signal that is split is reflected by the corresponding reflective mirror 30 included in reflective mirror group 3 to apply a predetermined phase shift to the respective frequency components Each reflected frequency component is then combined using optical combining/splitting unit 2, to give dispersion compensated optical signal Furthermore, in regards to reflective mirror group 3, which is used to apply phase shift to each frequency component of an optical signal, each of the respective plurality of reflective mirrors 30 is made a movable mirror having a movable reflection position that reflects the frequency components. Through this, dispersion that develops in an optical signal may be compensated with favorable controllability and high accuracy. Therefore, the precision and controllability of dispersion compensation will become superior, and realized is a variable dispersion compensator having a miniaturized optical circuit, and an optical transmission system comprising such variable dispersion compensator,

摘要翻译： 要成为色散补偿的对象的光信号被光学合成/分离单元2分离，并且被分离的光信号的每个频率分量被包括在反射镜组3中的相应的反射镜30反射到 对相应的频率分量施加预定的相移。然后使用光学合成/分离单元2组合每个反射频率分量，以产生色散补偿的光信号。此外，关于反射镜组3，其用于将相移施加到每个 光信号的频率分量，各个反射镜30中的每一个被制成具有反映频率分量的可移动反射位置的可移动反射镜。 由此，可以以良好的可控性和高精度补偿在光信号中产生的色散。 因此，色散补偿的精度和可控性将变得更好，并且实现了具有小型化光电路的可变色散补偿器和包括这种可变色散补偿器的光传输系统，

公开(公告)号：US06795235B1

公开(公告)日：2004-09-21

申请号：US09635900

申请日：2000-08-11

申请人： Toshiaki Okuno ,  Masayuki Nishimura

发明人： Toshiaki Okuno ,  Masayuki Nishimura

IPC分类号： H01S330

CPC分类号： H01S3/22 ,  H01S3/06754 ,  H01S3/094011 ,  H01S3/107 ,  H01S3/30 ,  H01S3/302

摘要： The present invention relates to an optical transmission line enabling Raman amplification of an optical signal when pumping light is supplied thereto, a method of making this optical transmission line, and an optical transmission system using this optical transmission line. This optical transmission line is an optical transmission line enabling Raman amplification of an optical signal when pumping light is supplied thereto, wherein a region yielding the maximum value of Raman gain coefficient is separated from an end portion where the pumping light is supplied by a predetermined distance along a direction in which the pumping light advances. This optical transmission line can restrain the power of optical signal, at any point of the optical transmission line, from increasing to such an extent that optical Kerr effects occurs remarkably and from decreasing to such an extent that the SN ratio deteriorates greatly, and can fully secure the power of optical signal at the end point of the optical transmission line.

摘要翻译： 本发明涉及一种能够提供泵浦光时能够进行光信号的拉曼放大的光传输线路，制造该光传输线路的方法以及使用该光传输线路的光传输系统。 该光传输线是当向其提供泵浦光时能够对光信号进行拉曼放大的光传输线，其中产生拉曼增益系数的最大值的区域与泵送光被提供预定距离的端部分离 沿着泵浦光前进的方向。 该光传输线可以抑制在光传输线的任何点的光信号的功率增加到光学克尔效应显着地发生并且从降低到使SN比大大降低的程度的程度，并且可以完全 在光传输线路的终点处确保光信号的功率。

公开(公告)号：US08054537B2

公开(公告)日：2011-11-08

申请号：US11883364

申请日：2007-01-17

申请人： Toshiaki Okuno

发明人： Toshiaki Okuno

IPC分类号： H01S3/10 ,  G02F1/35

CPC分类号： G02F1/3513 ,  G02F2001/3503 ,  G02F2001/3528

摘要： The present invention relates to a light source apparatus that has a base structure capable of generating SC light and further having a structure that enables the shaping of the spectral waveform of the SC light, power adjustment of the SC light, or adjustment of the frequency of repetition of the pulse train that contains the SC light. For example, a light source apparatus that enables shaping of spectral waveforms comprises a seed light source that emits seed light which is a pulse train or continuous light; an optical fiber that generates SC light from the seed light, and spectrum shaping means for completely or partially changing the spectral waveform of the SC light. The shaping of the spectral waveform changes the maximum power of the seed light by changing the optical coupling efficiency of the seed light source and optical fiber, for example, thereby suitably deforms the spectrum of the SC light.

公开(公告)号：US08054525B2

公开(公告)日：2011-11-08

申请号：US12530753

申请日：2008-03-13

申请人： Toshiaki Okuno

发明人： Toshiaki Okuno

IPC分类号： G02F1/03

CPC分类号： G02F1/353 ,  G02F1/3536 ,  G02F1/365 ,  G02F2201/02

摘要： Provided is a wavelength converter having a simple and low-cost structure. The wavelength converter generates converted light having a wavelength different from that of input light. The wavelength converter includes (1) a pump light source that outputs pump light, (2) an optical multiplexer that combines and outputs input light and the pump light, (3) a first optical fiber that receives and guides the input light and the pump light that have been combined and output by the optical multiplexer and generates converted light using a nonlinear optical phenomenon that occurs while the first optical fiber guides the input light and the pump light, the first optical fiber being coiled, and (4) zero-dispersion wavelength adjusting means that adjusts a zero-dispersion wavelength of the first optical fiber.

摘要翻译： 提供了具有简单且低成本结构的波长转换器。 波长转换器产生具有与输入光不同的波长的转换光。 波长转换器包括（1）输出泵浦光的泵浦光源，（2）组合并输出输入光和泵浦光的光复用器，（3）接收并引导输入光和泵的第一光纤 由光复用器组合并输出的光，并且使用在第一光纤引导输入光和泵浦光时发生的非线性光学现象产生转换光，第一光纤被卷绕，以及（4）零色散 波长调整装置，其调节第一光纤的零色散波长。

公开(公告)号：US20110221056A1

公开(公告)日：2011-09-15

申请号：US12976244

申请日：2010-12-22

申请人： Takaaki Miyaji ,  Akihiko Sano ,  Tadashi Inoue ,  Toshiaki Okuno ,  Yoshiki Hada ,  Sayaka Doi ,  Yoshiki Ashihara

发明人： Takaaki Miyaji ,  Akihiko Sano ,  Tadashi Inoue ,  Toshiaki Okuno ,  Yoshiki Hada ,  Sayaka Doi ,  Yoshiki Ashihara

IPC分类号： H01L23/488

CPC分类号： B81B7/007 ,  B81B2207/095

摘要： An electrode structure has a Cu electrode that provided in a surface of a substrate, a diffusion preventing film that is made of a material in which a diffusion coefficient of Sn is equal to or lower than 3×10−23 cm2/sec, the whole Cu electrode being covered with the diffusion preventing film, and a solder layer that is provided above the diffusion preventing film, the solder layer being made of Au—Sn solder.

摘要翻译： 电极结构具有设置在基板的表面的Cu电极，由扩散系数Sn等于或低于3×10-23cm 2 / sec的材料制成的扩散防止膜，整体 Cu电极被扩散防止膜覆盖，以及设置在扩散防止膜上方的焊料层，焊料层由Au-Sn焊料制成。