公开(公告)号：US5771255A

公开(公告)日：1998-06-23

申请号：US799119

申请日：1997-02-11

申请人： Yukio Horiuchi ,  Shu Yamamoto ,  Shigeyuki Akiba

发明人： Yukio Horiuchi ,  Shu Yamamoto ,  Shigeyuki Akiba

IPC分类号： G02F1/01 ,  G02F1/35 ,  H01S5/00 ,  H01S5/06 ,  H01S5/068 ,  H01S3/13

CPC分类号： H04B10/50593 ,  H04B10/504 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/50597 ,  H04B10/564

摘要： A laser light generator includes an adder 12 which adds an optical frequency modulation signal Sm onto a d.c. voltage for driving a laser diode 10 for continuous laser oscillation, and applies the sum signal to the laser diode 10 to drive it. An light output from the laser diode 10 is introduced to an optical intensity controller 14 that is controlled by a control signal prepared by adjusting the optical frequency modulation signal Sm both in phase and in amplitude by a phase adjusting circuit 16 and an amplitude adjusting circuit 18. The optical intensity controller 14 may be an electroabsorption modulator that changes its transmissivity in response to an output voltage of the circuit 18. Quantities of adjustment by the circuits 16 and 18 are determined so that fluctuation in transmissivity of the optical intensity controller 14 suppresses intensity fluctuation of the light output of the laser diode 10.

摘要翻译： 激光发生器包括加法器12，该加法器12将光频调制信号Sm加到直流电路上。 用于驱动用于连续激光振荡的激光二极管10的电压，并将和信号施加到激光二极管10以驱动它。 来自激光二极管10的光输出被引入光强度控制器14，该光强度控制器14由通过相位调整电路16和振幅调整电路18调整相位和幅度的光频调制信号Sm而制备的控制信号来控制 光强度控制器14可以是响应于电路18的输出电压来改变其透射率的电吸收调制器。确定电路16和18的调整量，使得光强度控制器14的透射率的波动抑制强度 激光二极管10的光输出的波动。

公开(公告)号：US4747094A

公开(公告)日：1988-05-24

申请号：US773971

申请日：1985-09-09

申请人： Haruo Sakaguchi ,  Norio Seki ,  Shu Yamamoto ,  Yoshinao Iwamoto

发明人： Haruo Sakaguchi ,  Norio Seki ,  Shu Yamamoto ,  Yoshinao Iwamoto

IPC分类号： H04B10/00 ,  H04B10/27 ,  H04B10/272 ,  H04B10/524 ,  H04J3/08 ,  H04Q11/04 ,  H04B9/00

CPC分类号： H04J3/08 ,  H04B10/29

摘要： A signal coupler couples more than three transmitter-receivers through optical fiber cables and at least one repeater on a bit-multiplex system, by exchanging or reallocating each time slot according to a transmission station and the related destination. The coupler has a means to release the bit-multiplexing (or demultiplex) the signals from each transmitter by deriving the control clock signals from the information signals themselves. The coupler also has a means for multiplexing the bit signals for each destination by automatically adjusting the phase relationships among the released signals (demultiplexed signals) for bit-synchronization using a delay circuit.

摘要翻译： 信号耦合器通过光纤电缆和位复用系统上的至少一个中继器耦合多于三个发射机 - 接收机，通过根据传输站和相关目的地交换或重新分配每个时隙。 耦合器具有通过从信息信号本身导出控制时钟信号来释放来自每个发射机的信号的位复用（或解复用）的装置。 耦合器还具有用于通过使用延迟电路自动调整用于位同步的释放信号（解复用信号）之间的相位关系来复用每个目的地的位信号的装置。

公开(公告)号：US20070134822A1

公开(公告)日：2007-06-14

申请号：US11543256

申请日：2006-10-05

申请人： Shu Yamamoto ,  Yasuhiro Chouno ,  Yoshichika Tokuno

发明人： Shu Yamamoto ,  Yasuhiro Chouno ,  Yoshichika Tokuno

IPC分类号： H01L21/66

CPC分类号： B01F3/08 ,  B01F15/0022 ,  B01F15/0408 ,  B01F2215/0096 ,  H01L21/6704 ,  H01L21/67051 ,  H01L21/6715 ,  H01L21/67253

摘要： A process system produces a process liquid of a predetermined concentration in a blending tank by blending solutions respectively supplied from a plurality of solution supply sources, supplies the process liquid to a supply tank to store therein the process liquid, and supplies the process liquid from the supply tank to a process liquid discharge port. In this process system, whether a concentration of the process liquid in the supply tank has changed or not is judged. When it is judged that the concentration of the process liquid in the supply tank has changed, the process liquid is additionally supplied from the blending tank to the supply tank, or the solution is directly supplied from the solution supply source to the supply tank, so as to maintain the concentration of the process liquid.

摘要翻译： 处理系统通过混合从多个溶液供应源分别供应的溶液，在混合罐中产生预定浓度的处理液体，将处理液体供应到供应罐以在其中存储处理液体，并将处理液体从 供应罐到处理液排出口。 在该处理系统中，判断供给罐中的处理液的浓度是否变化。 当判断供应罐中的处理液体的浓度已经改变时，处理液体从混合罐另外供应到供应罐，或者溶液从溶液供应源直接供应到供应罐，因此 以保持工艺液体的浓度。

公开(公告)号：US06285477B1

公开(公告)日：2001-09-04

申请号：US09469936

申请日：1999-12-21

申请人： Tetsuya Miyazaki ,  Noboru Edagawa ,  Shu Yamamoto

发明人： Tetsuya Miyazaki ,  Noboru Edagawa ,  Shu Yamamoto

IPC分类号： H04J1402

CPC分类号： H01S3/2383 ,  H01S3/06791 ,  H01S3/08086 ,  H04J14/02

摘要： In a light source for generating light containing multiple wavelengths substantially uniform in intensity, a wavelength demultiplexing element 10 (for example, waveguide-type wavelength selecting filter) demultiplexes input light into a plurality of wavelengths &lgr;1 through &lgr;32. Optical amplifiers 14-1 through 14-32 amplify outputs of the element 10 and applies them to input ports of a wavelength multiplexing element 12. The wavelength multiplexing element 12 wavelength-multiplexes their input. Output of the wavelength multiplexing element 12 is applied to a fiber coupler 16 which, in turn, applies one of its outputs to the wavelength demultiplexing element 10. The optical amplifiers 14 have a gain larger by approximately 10 dB than the loss in the optical loop made of the element 10, optical amplifier 14, element 12 and fiber coupler 16. The other output of the fiber coupler 16 is wavelength-multiplex light containing wavelengths &lgr;1 through &lgr;32.

摘要翻译： 在用于产生强度基本均匀的多个波长的光的光源中，波长解复用元件10（例如，波导型波长选择滤波器）将输入光分离成多个波长lambd1至lambd32。 光放大器14-1至14-32放大元件10的输出并将其施加到波长多路复用元件12的输入端口。波长复用元件12对其输入进行波长多路复用。 波长多路复用元件12的输出被施加到光纤耦合器16，光纤耦合器16又将其一个输出施加到波长解复用元件10.光放大器14具有比光环路中的损耗大约10dB的增益 由元件10，光放大器14，元件12和光纤耦合器16制成。光纤耦合器16的另一个输出是波长lambd1至lambd32的波长多路复用光。

公开(公告)号：US06219163B1

公开(公告)日：2001-04-17

申请号：US09625385

申请日：2000-07-26

申请人： Tetsuya Miyazaki ,  Noboru Edagawa ,  Shu Yamamoto

发明人： Tetsuya Miyazaki ,  Noboru Edagawa ,  Shu Yamamoto

IPC分类号： H04J1402

CPC分类号： H01S3/2383 ,  H01S3/067 ,  H01S3/06791 ,  H01S3/08086 ,  H04B2210/258 ,  H04J14/02

摘要： In a light source for generating light containing multiple wavelengths substantially uniform in intensity, a wavelength demultiplexing element 10 (for example, waveguide-type wavelength selecting filter) demultiplexes input light into a plurality of wavelengths &lgr;1 through &lgr;32. optical amplifiers 14-1 through 14-32 amplify outputs of the element 10 and applies them to input ports of a wavelength multiplexing element 12. The wavelength multiplexing element 12 wavelength-multiplexes their input. Output of the wavelength multiplexing element 12 is applied to a fiber coupler 16 which, in turn, applies one of its outputs to the wavelength demultiplexing element 10. The optical amplifiers 14 have a gain larger by approximately 10 dB than the loss in the optical loop made of the element 10, optical amplifier 14, element 12 and fiber coupler 16. The other output of the fiber coupler 16 is wavelength-multiplex light containing wavelengths &lgr;1 through &lgr;32.

摘要翻译： 在用于产生强度基本均匀的多个波长的光的光源中，波长解复用元件10（例如，波导型波长选择滤波器）将输入光分离成多个波长lambd1至lambd32。 光放大器14-1至14-32放大元件10的输出并将其施加到波长多路复用元件12的输入端口。波长复用元件12对其输入进行波长多路复用。 波长多路复用元件12的输出被施加到光纤耦合器16，光纤耦合器16又将其一个输出施加到波长解复用元件10.光放大器14具有比光环路中的损耗大约10dB的增益 由元件10，光放大器14，元件12和光纤耦合器16制成。光纤耦合器16的另一个输出是波长lambd1至lambd32的波长多路复用光。

公开(公告)号：US6160649A

公开(公告)日：2000-12-12

申请号：US136720

申请日：1998-08-19

申请人： Yukio Horiuchi ,  Shu Yamamoto ,  Shigeyuki Akiba

发明人： Yukio Horiuchi ,  Shu Yamamoto ,  Shigeyuki Akiba

IPC分类号： H04J14/00 ,  H04B10/07 ,  H04B10/2507 ,  H04B10/54 ,  H04B10/548 ,  H04B17/00 ,  H04J14/02 ,  H04B10/08

CPC分类号： H04B10/07955 ,  H04B10/0775 ,  H04B10/0779 ,  H04B10/0799 ,  H04B2210/075 ,  H04B2210/078

摘要： An oscillator oscillates at a predetermined reference frequency, and a reference signal light sender generates light (reference signal light) of a specific wavelength deeply modulated by output from the oscillator. A frequency divider frequency-divides the output from the oscillator into a certain number, and outputs a tone signal of a predetermined measurement frequency. Output from the frequency divider is applied to selected one of a plurality of optical transmission signal senders via one of a plurality of switches, and is used to slightly intensity-modulate a corresponding optical transmission signal. An optical divider in an optical repeater outputs most of output light from an optical amplifier onto an optical fiber transmission line toward a terminal station, and applies small amounts of the light to a measuring circuit. The measuring circuit synchronously detects the measurement frequency component in the received light using the reference frequency obtained from the reference signal light of the specific wavelength. A modulator slightly varies the amplification gain of the other optical amplifier that amplifies the signal light travelling on the other optical fiber transmission line in response to results of measurement by the measuring circuit.

摘要翻译： 振荡器以预定的参考频率振荡，并且参考信号光发送器产生由振荡器的输出深度调制的特定波长的光（参考信号光）。 分频器将振荡器的输出分频为一定数量，并输出预定测量频率的音调信号。 来自分频器的输出经由多个开关中的一个被施加到多个光传输信号发送器中的所选择的一个，并且用于对相应的光传输信号进行轻微的调制。 光中继器中的分光器将大部分从光放大器的输出光输出到光终端上的光纤传输线，并将少量的光施加到测量电路。 测量电路使用从特定波长的参考信号光获得的参考频率同步地检测接收光中的测量频率分量。 调制器稍微改变另一个光放大器的放大增益，该放大增益响应于测量电路的测量结果而放大在另一条光纤传输线上传播的信号光。

公开(公告)号：US6115173A

公开(公告)日：2000-09-05

申请号：US206911

申请日：1998-12-07

申请人： Keiji Tanaka ,  Noboru Edagawa ,  Shu Yamamoto

发明人： Keiji Tanaka ,  Noboru Edagawa ,  Shu Yamamoto

IPC分类号： H04J14/00 ,  H04B10/2557 ,  H04B10/2563 ,  H04B10/29 ,  H04B10/291 ,  H04J14/02 ,  H01S3/00

CPC分类号： H04B10/2935 ,  H04B10/2557

摘要： In an optical fiber transmission line between two terminal stations, an input side wavelength converter for up-shifting a wavelength of a signal light is inserted at a front part of each of the optical amplifiers and an output side wavelength converter for down-shifting a wavelength of a signal light is inserted at a rear step of the optical amplifiers. Signal lights transmit in a wavelength band shorter or longer than the zero dispersion wavelength of the transmission optical fiber on said transmission optical fibers. The input side wavelength converter converts the wavelength of the signal lights from the transmission optical fibers within the amplifying bandwidth of the optical amplifiers and the output side wavelength converter returns the wavelength of the signal lights optically amplified by the optical amplifiers.

摘要翻译： 在两个终端站之间的光纤传输线路中，用于将信号光波长上变频的输入侧波长转换器插入每个光放大器的前部，输出侧波长转换器用于将波长 在光放大器的后台插入信号光。 信号光在比所述传输光纤上的传输光纤的零色散波长更短或更长的波长带中传输。 输入侧波长转换器在光放大器的放大带宽内转换来自传输光纤的信号光的波长，并且输出侧波长转换器返回由光放大器光学放大的信号光的波长。

公开(公告)号：US5930015A

公开(公告)日：1999-07-27

申请号：US794048

申请日：1997-02-03

申请人： Takaya Yamamoto ,  Katsuyuki Yamazaki ,  Shu Yamamoto ,  Yotaro Yatsuzuka

发明人： Takaya Yamamoto ,  Katsuyuki Yamazaki ,  Shu Yamamoto ,  Yotaro Yatsuzuka

IPC分类号： H04J14/00 ,  H04B10/03 ,  H04B10/07 ,  H04B10/079 ,  H04B10/27 ,  H04B10/293 ,  H04B10/524 ,  H04B10/564 ,  H04B10/572 ,  H04J1/00 ,  H04J14/02 ,  H04J14/08 ,  H04L7/00 ,  H04L7/04

CPC分类号： H04J14/02 ,  H04B10/2587 ,  H04J14/08 ,  H04L7/0075 ,  H04L7/041

摘要： An optical access system is disclosed in which subscribers' terminals and optical coupler-splitters of nodes are maintenance-free and required control is effected on the part of the central office alone. At a first position, down-link optical digital signals are generated, which are made "1s" every n bits (n being an integer equal to greater than 2). The optical digital signals, except a train of optical pulses every n bits, are sent as down-link information over a transmission line. At a second position, the optical digital signals, except the optical pulse train, are demodulated from the transmitted down-link optical digital signals, and in an optical gate circuit on which the down-link optical digital signals are incident, up-link optical digital signals based on up-link message data is formed in synchronization with the optical pulses corresponding to every n-th bits and is transmitted to the first position over the transmission line. At the first position, the up-link optical digital signals sent from the second position is received from the transmission line.

摘要翻译： 公开了一种光接入系统，其中节点的用户终端和光耦合器分离器是免维护的，并且仅在中心局的部分进行所需的控制。 在第一位置，产生下行链路光数字信号，其每n位（n等于大于2的整数）被制成“1”。 每n位除了一列光脉冲之外的光数字信号通过传输线作为下行链路信息发送。 在第二位置，除了光脉冲序列之外的光数字信号从发送的下行链路光数字信号中解调，并且在下行链路光数字信号入射的光栅电路中，上行链路光 基于上行链路消息数据的数字信号与对应于每个第n位的光脉冲同步地形成，并通过传输线传输到第一位置。 在第一位置，从传输线接收从第二位置发送的上行链路光数字信号。

公开(公告)号：US5898502A

公开(公告)日：1999-04-27

申请号：US878543

申请日：1997-06-19

申请人： Yukio Horiuchi ,  Shu Yamamoto

发明人： Yukio Horiuchi ,  Shu Yamamoto

IPC分类号： G01J1/16 ,  G01J9/00 ,  H04B10/07 ,  H04B10/079 ,  H04B110/08 ,  G01J3/51

CPC分类号： G01J1/1626 ,  G01J9/00

摘要： In an optical wavelength monitoring apparatus for easily monitoring wavelength deviation, light introduced from a laser source 10 to an optical transmission line 12 is divided by directional couplers 14, 20. Optical output of the directional coupler 14 is converted into an electrical signal by a photodiode 16, and logarithmic-amplified by a logarithmic amplifier 18. Optical output of the directional coupler 20 is introduced to a photodiode 26 via an optical filter 24. The optical filter 24 is an optical element whose transmittance decreases as the incident light deviates from a specific wavelength .lambda.a. Optical output from the optical filter 24 is converted into an electrical signal by a photodiode 26, and logarithmic-amplified by a logarithmic amplifier 28. A differential amplifier 30 outputs a difference between outputs of the amplifiers 18, 28. A comparator 32 compares the output of the differential amplifier 30 with an alarm threshold Vref, and outputs an alarm-on signal when the difference is Vref or higher.

摘要翻译： 在用于容易监测波长偏差的光波长监测装置中，从激光源10引入到光传输线12的光被定向耦合器14,20分开。定向耦合器14的光输出由光电二极管转换成电信号 定向耦合器20的光输出通过滤光器24被引入光电二极管26.光学滤光器24是一种光学元件，其透光率随着入射光偏离特定的光学元件而降低 波长λa。 来自滤光器24的光输出由光电二极管26转换成电信号，由对数放大器28对数放大。差分放大器30输出放大器18,28的输出之间的差。比较器32将输出 差分放大器30具有报警阈值Vref，并且当差值为Vref或更高时输出报警开启信号。

公开(公告)号：US5138621A

公开(公告)日：1992-08-11

申请号：US680393

申请日：1991-04-04

申请人： Koji Goto ,  Shu Yamamoto ,  Yukio Horiuchi ,  Hiroharu Wakabayashi

发明人： Koji Goto ,  Shu Yamamoto ,  Yukio Horiuchi ,  Hiroharu Wakabayashi

IPC分类号： G02B6/02 ,  C03C13/04 ,  G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/0915 ,  H01S3/094 ,  H01S3/10 ,  H01S3/13 ,  H01S3/131 ,  H04B10/032 ,  H04B10/079 ,  H04B10/29 ,  H04B10/293

CPC分类号： H01S3/1301 ,  H01S3/094003 ,  H01S3/09408 ,  H01S5/06825

摘要： A pumping light source drive system is disclosed for driving pumping light sources of an optical amplifier which is composed of a rare earth doped optical fiber doped with a rare earth element and said pumping light sources. The pumping light sources are always held in operation. The output signal power at the output of the rare earth doped optical fiber or the combined power of the pumping light sources is detected and compared with a predetermined reference power to control the output power of the pumping light sources, so that the output signal power or the combined power of the pumping light sources reaches a predetermined value.

摘要翻译： 公开了一种用于驱动由掺杂有稀土元素的稀土掺杂光纤和所述泵浦光源组成的光放大器的泵浦光源的泵浦光源驱动系统。 泵浦光源始终保持运行。 检测稀土掺杂光纤的输出端的输出信号功率或泵浦光源的组合功率，并将其与预定的参考功率进行比较，以控制泵浦光源的输出功率，使输出信号功率或 泵浦光源的组合功率达到预定值。