公开(公告)号：US06172803B2

公开(公告)日：2001-01-09

申请号：US09171409

申请日：1998-10-16

申请人： Hiroji Masuda ,  Shingo Kawai ,  Kenichi Suzuki ,  Kazuo Aida

发明人： Hiroji Masuda ,  Shingo Kawai ,  Kenichi Suzuki ,  Kazuo Aida

IPC分类号： H01S300

CPC分类号： H04B10/2912 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/094011 ,  H01S3/094096 ,  H01S3/1608 ,  H01S3/302 ,  H01S2301/04 ,  H04B10/291 ,  H04B10/2916 ,  H04B10/2941 ,  H04B2210/003

摘要： An optical amplifier having a two-stage construction using an erbium doped fiber (EDF) as a gain medium. The erbium dopant concentration is 1000 ppm, and the unsaturated absorption coefficient of the signal beam at 1550 nm is 1 dB/m. The length of the EDF 14-8 is 10 m, and the length of the EDF 14-12 is 70 m. The excitation light sources 14-6 and 14-10 are semiconductor lasers of 1.53 &mgr;m, and the excitation light power is 100 mW. Multiplexers 14-7 and 14-11 are inductive multi-layer film filters, and the gain equalizer 14-4 is a Fourier filter. The peak loss of the Fourier filter is 17 dB. The gain of the EDF 14-8 is 25 dB, and the gain of the EDF 14-12 is 15 dB. Two optical isolators are installed on a pre-stage amplifier, and one on a post-stage amplifier in order to prevent laser oscillation.

摘要翻译： 一种具有使用掺铒光纤（EDF）作为增益介质的两级结构的光放大器。 铒掺杂剂浓度为1000ppm，1550nm处的信号束的不饱和吸收系数为1dB / m。 EDF14-8的长度为10μm，EDF14-12的长度为70μm。 激发光源14-6和14-10是1.53μm的半导体激光器，激发光功率为100mW。 多路复用器14-7和14-11是感性多层膜滤波器，增益均衡器14-4是傅立叶滤波器。 傅立叶滤波器的峰值损耗为17 dB。 EDF 14-8的增益为25 dB，EDF 14-12的增益为15 dB。 两个光隔离器安装在前级放大器上，一个安装在后级放大器上，以防止激光振荡。

公开(公告)号：US6157025A

公开(公告)日：2000-12-05

申请号：US174724

申请日：1998-10-19

申请人： Yoshitada Katagiri ,  Yoshiaki Tachikawa ,  Shinji Nagaoka ,  Fumikazu Ohira ,  Kazuo Aida ,  Ken-ichi Suzuki ,  Hiroshi Abe ,  Shingo Kawai ,  Hitoshi Obara

发明人： Yoshitada Katagiri ,  Yoshiaki Tachikawa ,  Shinji Nagaoka ,  Fumikazu Ohira ,  Kazuo Aida ,  Ken-ichi Suzuki ,  Hiroshi Abe ,  Shingo Kawai ,  Hitoshi Obara

IPC分类号： G02B6/34 ,  G02B7/00 ,  G02B26/00 ,  G02B27/44 ,  H01J40/14

CPC分类号： G02B6/4246 ,  G02B26/008 ,  G02B27/4244 ,  G02B6/29361 ,  G02B6/29395 ,  G02B5/20 ,  G02B6/2937 ,  G02B7/006

摘要： A disk shaped tunable optical filter is formed by a transparent substrate in a disk shape, and a filter layer formed on a top surface of the substrate, having such a filter characteristic that a transmission central wavelength varies along a circumferential direction as a monotonic function of a viewing angle. This disk shaped tunable optical filter can be advatageously utilized in realizing a wavelength discrimination apparatus, a reference wavelength light generation apparatus, an optical packet generation apparatus, and a tunable optical filter module, which are also disclosed.

摘要翻译： 盘状可调谐滤光器由盘状的透明基板和形成在基板的顶面上的滤光层形成，该滤光片具有透光中心波长沿圆周方向变化的滤光器特性，作为单调功能 视角。 这种盘形可调光滤波器可以被广泛地用于实现波长鉴别装置，参考波长发光装置，光分组产生装置和可调光滤波器模块。

公开(公告)号：US5986789A

公开(公告)日：1999-11-16

申请号：US812158

申请日：1997-03-06

申请人： Shingo Kawai ,  Kenichi Suzuki ,  Katsumi Iwatsuki

发明人： Shingo Kawai ,  Kenichi Suzuki ,  Katsumi Iwatsuki

IPC分类号： H04B10/2507 ,  H04B10/18 ,  H04B10/12

CPC分类号： H04B10/25077

摘要： An optical transmission line formed by a plurality of transmission circuits each comprising, connected in the following order, an optical fiber, an optical amplifier and an optical filter. The dispersion decrease in each optical fiber and the amplification of each optical amplifier are set for each transmission circuit such as to obtain a predetermined optical pulse width, the central frequencies of the optical filters are made to sequentially slide toward lower frequencies along the direction of propagation, and the mean zero-dispersion wavelengths of the optical fibers are made to sequentially increase along the direction of propagation. An optical transmission system according to the present invention is formed from an optical transmission line according to the present invention, an optical transmitter and an optical receiver.

摘要翻译： 由多个传输电路形成的光传输线，每个传输电路包括以下顺序连接的光纤，光放大器和滤光器。 为了获得预定的光脉冲宽度，为每个发射电路设置每个光纤的色散减小和每个光放大器的放大，使得滤光器的中心频率沿着传播方向向较低的频率顺序地滑动 ，并且使光纤的平均零色散波长沿着传播方向依次增加。 根据本发明的光传输系统由根据本发明的光传输线，光发射机和光接收机形成。

公开(公告)号：US5764841A

公开(公告)日：1998-06-09

申请号：US840024

申请日：1997-04-24

申请人： Katsumi Iwatsuki ,  Kenichi Suzuki ,  Shingo Kawai

发明人： Katsumi Iwatsuki ,  Kenichi Suzuki ,  Shingo Kawai

IPC分类号： G02B6/34 ,  H04B10/2525 ,  G02B6/02

CPC分类号： H04B10/25253

摘要： The optical fiber transmission line according to the present invention comprises first optical fibers having dispersion values greater than the average dispersion value D.sub.av over the entire transmission distance and second optical fibers having dispersion values less than the average dispersion value D.sub.av, wherein the average dispersion value D.sub.av over the entire transmission distance is in the anomalous dispersion region, the respective lengths L.sub.i and L.sub.i ' of the first and second optical fibers are shorter than the soliton length Z.sub.0 (wherein i is an arbitrary natural number), and the relationship between the lengths L.sub.i and L.sub.i ' and the larger of the respective differences D.sub.i and D.sub.i ' between the dispersion values of the first and second optical fibers and the average dispersion value D.sub.av satisfies the following condition: (L.sub.i +L.sub.i ')/Z.sub.0

摘要翻译： 根据本发明的光纤传输线包括在整个传输距离上具有大于平均色散值Dav的色散值的第一光纤和具有小于平均色散值Dav的色散值的第二光纤，其中平均色散值Dav 在整个传输距离处于异常色散区域中，第一和第二光纤的相应长度Li和Li'短于孤子长度Z0（其中i是任意自然数），并且长度Li 和Li'，并且第一和第二光纤的色散值与平均色散值Dav之间的差值Di和Di'中较大的值满足以下条件：（Li + Li'）/ Z0 <0.35 / {1+ 0.20（Di和Di'/ Dav中的较大者）}

公开(公告)号：US20090161708A1

公开(公告)日：2009-06-25

申请号：US11568109

申请日：2006-02-02

申请人： Shingo Kawai ,  Kiyoshi Matsumoto ,  Hideo Kawata ,  Naoto Yoshimoto ,  Katsumi Iwatsuki

发明人： Shingo Kawai ,  Kiyoshi Matsumoto ,  Hideo Kawata ,  Naoto Yoshimoto ,  Katsumi Iwatsuki

IPC分类号： H01S3/13 ,  H01S3/04

CPC分类号： H01S5/0687 ,  H01S5/0617 ,  H01S5/06804 ,  H01S5/0683

摘要： In the present invention, the extremely complicated setting and control and an extremely expensive optical component (wavelength locker) are not required, and optical output wavelength and optical output power can simply be set and controlled at a moderate price. At least one value for determining a dependence of the optical output wavelength on drive current and device temperature and at least one value for determining a dependence of the optical output power on drive current and device temperature in a light emitting device constituting first means 1 for emitting light are stored in fourth means 4. Fifth means 5 determines drive current or optical output power c and device temperature d, at which both the optical output wavelength and optical output power of the light emitting device are separately specified value b, from a relationship among the drive current, device temperature, and optical output wavelength of the light emitting device, the relationship being determined by the at least one value, and a relationship among the drive current, device temperature, and optical output power, the relationship being determined by the at least one value, and the fifth means 5 gives the drive current or optical output power c and device temperature d as target values to second means 2 and third means 3.

摘要翻译： 在本发明中，不需要非常复杂的设置和控制以及极其昂贵的光学部件（波长锁定器），并且可以以适中的价格简单地设置和控制光输出波长和光输出功率。 用于确定光输出波长对驱动电流和器件温度的依赖性的至少一个值和用于确定构成用于发射的第一装置1的发光器件中的光输出功率对驱动电流和器件温度的依赖性的至少一个值 光存储在第四装置4中。第五装置5确定驱动电流或光输出功率c和器件温度d，其中发光器件的光输出波长和光输出功率两者分别指定值b， 所述驱动电流，器件温度和所述发光器件的光输出波长，所述关系由所述至少一个值确定，以及所述驱动电流，器件温度和光输出功率之间的关系，所述关系由 至少一个值，第五装置5给出驱动电流或光输出功率c和器件温度d 作为第二装置2和第三装置3的目标值。

公开(公告)号：US07869717B2

公开(公告)日：2011-01-11

申请号：US11568109

申请日：2006-02-02

申请人： Shingo Kawai ,  Kiyoshi Matsumoto ,  Hideo Kawata ,  Naoto Yoshimoto ,  Katsumi Iwatsuki

发明人： Shingo Kawai ,  Kiyoshi Matsumoto ,  Hideo Kawata ,  Naoto Yoshimoto ,  Katsumi Iwatsuki

IPC分类号： H04B10/04 ,  H01S3/13

CPC分类号： H01S5/0687 ,  H01S5/0617 ,  H01S5/06804 ,  H01S5/0683

摘要： In the present invention, the extremely complicated setting and control and an extremely expensive optical component (wavelength locker) are not required, and optical output wavelength and optical output power can simply be set and controlled at a moderate price. At least one value for determining a dependence of the optical output wavelength on drive current and device temperature and at least one value for determining a dependence of the optical output power on drive current and device temperature in a light emitting device constituting first means 1 for emitting light are stored in fourth means 4. Fifth means 5 determines drive current or optical output power c and device temperature d, at which both the optical output wavelength and optical output power of the light emitting device are separately specified value b, from a relationship among the drive current, device temperature, and optical output wavelength of the light emitting device, the relationship being determined by the at least one value, and a relationship among the drive current, device temperature, and optical output power, the relationship being determined by the at least one value, and the fifth means 5 gives the drive current or optical output power c and device temperature d as target values to second means 2 and third means 3.

摘要翻译： 在本发明中，不需要非常复杂的设置和控制以及极其昂贵的光学部件（波长锁定器），并且可以以适中的价格简单地设置和控制光输出波长和光输出功率。 用于确定光输出波长对驱动电流和器件温度的依赖性的至少一个值和用于确定构成用于发射的第一装置1的发光器件中的光输出功率对驱动电流和器件温度的依赖性的至少一个值 光存储在第四装置4中。第五装置5确定驱动电流或光输出功率c和器件温度d，其中发光器件的光输出波长和光输出功率两者分别指定值b， 所述驱动电流，器件温度和所述发光器件的光输出波长，所述关系由所述至少一个值确定，以及所述驱动电流，器件温度和光输出功率之间的关系，所述关系由 至少一个值，第五装置5给出驱动电流或光输出功率c和器件温度d 作为第二装置2和第三装置3的目标值。

公开(公告)号：US5483035A

公开(公告)日：1996-01-09

申请号：US309654

申请日：1994-09-21

申请人： Shingo Kawai ,  Kenji Sahashi

发明人： Shingo Kawai ,  Kenji Sahashi

IPC分类号： B23K11/25 ,  B23K11/24

CPC分类号： B23K11/253

摘要： A resistance welder controller is disclosed, which controls a resistance welder for welding workpieces clamped between two electrodes with Joule heat generated by passing a welding current between the electrodes. The controller includes a preliminary current passing device for passing preliminary current between the electrodes until the workpieces and the electrodes become intimate with one another, a regular current passing device for passing regular current between the electrodes for welding the workpieces, a current control device for controlling the welding current according to the rate of expansion of the workpieces or the rate of increase of the resistance of the workpieces, and a current passing ending device for ending the welding current at or after an instant when the rate of expansion of the workpieces or the rate of increase of the resistance of the workpieces has become substantially zero.

摘要翻译： 公开了一种电阻焊机控制器，其控制电阻焊机用于焊接夹在两个电极之间的工件，其中通过在电极之间通过焊接电流而产生焦耳热。 控制器包括用于在电极之间通过预备电流的预备电流通过装置，直到工件和电极彼此亲近，用于在电极之间通过正常电流以焊接工件的常规电流通过装置，用于控制的电流控制装置 焊接电流根据工件的膨胀率或工件的电阻的增加率，以及用于在工件的膨胀率或者工件的膨胀率之后或之后结束焊接电流的电流通过结束装置 工件的电阻的增加率基本上为零。

公开(公告)号：US07206510B2

公开(公告)日：2007-04-17

申请号：US10266905

申请日：2002-10-08

申请人： Hiroo Suzuki ,  Masamichi Fujiwara ,  Mitsuhiro Teshima ,  Koji Akimoto ,  Shingo Kawai ,  Jun-ichi Kani ,  Noboru Takachio ,  Katsumi Iwatsuki

发明人： Hiroo Suzuki ,  Masamichi Fujiwara ,  Mitsuhiro Teshima ,  Koji Akimoto ,  Shingo Kawai ,  Jun-ichi Kani ,  Noboru Takachio ,  Katsumi Iwatsuki

IPC分类号： H04B10/20 ,  G02F1/00

CPC分类号： H04J14/02

摘要： A first optical fiber transmission path is used to transmit continuous-wave light for upstream signal light from the center node to each of the remote nodes, while a second optical fiber transmission path is used to transmit downstream signal light from the center node to each remote node and to transmit upstream signal light (obtained by modulating continuous-wave light) from each remote node to the center node. In this network, specific wavelength bandwidths are allocated to each remote node for the continuous-wave lights (for upstream signal lights) and the downstream signal lights, and the wavelength bandwidths for the continuous-wave lights (for upstream signal lights) and the downstream signal lights are alternately set.

摘要翻译： 第一光纤传输路径用于将用于上行信号光的连续波光从中心节点传输到每个远程节点，而第二光纤传输路径用于将来自中心节点的下行信号光传输到每个远程节点 并且将从每个远程节点发送的上行信号光（通过调制连续波光获得）发送到中心节点。 在该网络中，针对连续波灯（用于上行信号灯）和下行信号灯以及连续波光（用于上行信号灯）和下游的波长带宽，分配给每个远程节点的特定波长带宽 信号灯交替设定。

公开(公告)号：US06609033B1

公开(公告)日：2003-08-19

申请号：US09632364

申请日：2000-08-03

申请人： Shingo Kawai

发明人： Shingo Kawai

IPC分类号： G05B1918

CPC分类号： B23K11/252 ,  G05B2219/36522

摘要： Welding controller 1 has CPU 1a, ROM1 1b, ROM2 1c and RAM 1d. Programs and data are written into the ROM1 1b and can be rewritten. Sequential welding data is written into the RAM 1d and can be rewritten. A write program for writing programs or data or sequential welding data into the ROM1 1b or the RAM 1d is stored in the ROM2 1c. When a welding control program or data or sequential welding data is input into the CPU 1a from an input device 10 or a computer 12, the CPU 1a executes the write program to write the inputted program or data or sequential welding data into the ROM1 1b or the RAM 1d. Preferably, ROM 1b is an in situ programmable memory, such as a flash memory or EEPROM.

摘要翻译： 焊接控制器1具有CPU 1a，ROM1 1b，ROM2 1c和RAM 1d。 程序和数据被写入ROM1 1b，可以重写。 顺序焊接数据被写入到RAM 1d中，可以被重写。 用于将程序或数据或连续焊接数据写入ROM1b1或RAM1d的写入程序被存储在ROM2 1c中。 当焊接控制程序或数据或顺序焊接数据从输入装置10或计算机12输入到CPU 1a中时，CPU 1a执行写入程序以将输入的程序或数据或顺序焊接数据写入ROM1 1b或 RAM 1d。 优选地，ROM 1b是诸如闪存或EEPROM的原位可编程存储器。

公开(公告)号：US5440092A

公开(公告)日：1995-08-08

申请号：US73390

申请日：1993-06-09

申请人： Shingo Kawai

发明人： Shingo Kawai

IPC分类号： B23K11/24 ,  B23K11/25

CPC分类号： B23K11/256

摘要： A controller for a welding machine in which workpieces are pinched between a pair of electrodes through which welding current is supplied to weld the workpieces, the controller includes a circuit for detecting an amount of resistance between the electrodes, a circuit for monitoring occurrence of a phenomenon that interelectrode resistance detected by the detecting circuit shifts from an upward tendency to a downward tendency, and a circuit for cutting off welding current after occurrence of the phenomenon monitored by the monitoring circuit, and when an absolute value of a time derivative of the interelectrode resistances detected by the detecting circuit becomes less than the predetermined value.

摘要翻译： 一种用于焊接机器的控制器，其中工件被夹在一对电极之间，通过该电极供应焊接电流以焊接工件，控制器包括用于检测电极之间的电阻量的电路，用于监测现象发生的电路 由检测电路检测到的电极间电阻从上升趋势向下倾斜，以及在由监视电路监视的现象发生之后切断焊接电流的电路，以及当电极间电阻的时间导数的绝对值 由检测电路检测到的电流变得小于预定值。