公开(公告)号：US08326160B2

公开(公告)日：2012-12-04

申请号：US12951643

申请日：2010-11-22

申请人： Makoto Murakami ,  Toshihiro Ohtani

发明人： Makoto Murakami ,  Toshihiro Ohtani

IPC分类号： H04B10/06 ,  H04B10/00 ,  H04B10/12 ,  H04J14/02

CPC分类号： H04B10/25133 ,  H04B2210/252

摘要： A dispersion compensation device includes: an optical branching unit to branch an optical signal to be received; a first dispersion compensator to perform dispersion compensation on one part of the optical signal branched by the optical branching unit with a variable compensation amount; a second dispersion compensator to perform dispersion compensation on another part of the optical signal branched by the optical branching unit; a monitoring unit to monitor the communication quality of an output optical signal of the second dispersion compensator; and a controlling unit to determine the direction of variation in chromatic dispersion of the optical signal based on the direction of variation in communication quality monitored by the monitoring unit and control the compensation amount of the first dispersion compensator based on the result of the determination.

摘要翻译： 色散补偿装置包括：光分支单元，用于分支待接收的光信号; 第一色散补偿器，对具有可变补偿量的光分支单元分支的光信号的一部分进行色散补偿; 第二色散补偿器，对由光分支单元分支的光信号的另一部分进行色散补偿; 监视单元，用于监视第二色散补偿器的输出光信号的通信质量; 以及控制单元，其基于由所述监视单元监视的通信质量的变化方向来确定所述光信号的色散的变化方向，并且基于所述确定的结果来控制所述第一色散补偿器的补偿量。

公开(公告)号：US20110123191A1

公开(公告)日：2011-05-26

申请号：US12951643

申请日：2010-11-22

申请人： Makoto MURAKAMI ,  Toshihiro Ohtani

发明人： Makoto MURAKAMI ,  Toshihiro Ohtani

IPC分类号： H04B10/08

CPC分类号： H04B10/25133 ,  H04B2210/252

摘要： A dispersion compensation device includes: an optical branching unit to branch an optical signal to be received; a first dispersion compensator to perform dispersion compensation on one part of the optical signal branched by the optical branching unit with a variable compensation amount; a second dispersion compensator to perform dispersion compensation on another part of the optical signal branched by the optical branching unit; a monitoring unit to monitor the communication quality of an output optical signal of the second dispersion compensator; and a controlling unit to determine the direction of variation in chromatic dispersion of the optical signal based on the direction of variation in communication quality monitored by the monitoring unit and control the compensation amount of the first dispersion compensator based on the result of the determination.

摘要翻译： 色散补偿装置包括：光分支单元，用于分支待接收的光信号; 第一色散补偿器，对具有可变补偿量的光分支单元分支的光信号的一部分进行色散补偿; 第二色散补偿器，对由光分支单元分支的光信号的另一部分进行色散补偿; 监视单元，用于监视第二色散补偿器的输出光信号的通信质量; 以及控制单元，其基于由所述监视单元监视的通信质量的变化方向来确定所述光信号的色散的变化方向，并且基于所述确定的结果来控制所述第一色散补偿器的补偿量。

公开(公告)号：US20090324257A1

公开(公告)日：2009-12-31

申请号：US12491365

申请日：2009-06-25

申请人： Makoto MURAKAMI ,  Toshihiro Ohtani

发明人： Makoto MURAKAMI ,  Toshihiro Ohtani

IPC分类号： H04B10/12

CPC分类号： H04B10/2916 ,  H04J14/0221

摘要： An optical transmitting station changes a power level of control signal light having a first frequency at a second frequency lower than the first frequency, and transmits the control signal light whose power level has been changed to an optical receiving station through an optical transmission line. The optical receiving station monitors whether signal light components of the second frequency are received through the optical transmission line.

摘要翻译： 光发送站改变具有低于第一频率的第二频率的第一频率的控制信号光的功率电平，并且通过光传输线将其功率电平已经改变的控制信号光发送到光接收站。 光接收站通过光传输线监视第二频率的信号光分量。

公开(公告)号：US09048955B2

公开(公告)日：2015-06-02

申请号：US13488736

申请日：2012-06-05

申请人： Toshihiro Ohtani

发明人： Toshihiro Ohtani

IPC分类号： H04B10/00 ,  H04B10/08 ,  H04B10/12 ,  H04B10/18 ,  H04B10/2513 ,  H04B10/2519 ,  H04B10/2525

CPC分类号： H04B10/25133 ,  H04B10/2513 ,  H04B10/2519 ,  H04B10/2525 ,  H04B2210/003

摘要： A tunable dispersion compensation device includes a plurality of tunable dispersion compensators coupled in series, a controller configured to control an amount of chromatic dispersion to be set in each of the plurality of tunable dispersion compensators, and a table including a correspondence relationship between an amount of chromatic dispersion and a wavelength band, for each of the plurality of tunable dispersion compensators, wherein the controller decides an amount of chromatic dispersion to be set in each of the plurality of tunable dispersion compensators, based on a total amount of chromatic dispersion desired for the plurality of tunable dispersion compensators and the correspondence relationship included in the table so that a difference between bandwidths of a first tunable dispersion compensator having the widest wavelength band and a second tunable dispersion compensator having the narrowest wavelength band, among the plurality of tunable dispersion compensators, is within a given range.

摘要翻译： 可调色散补偿装置包括串联耦合的多个可调谐色散补偿器，控制器被配置为控制要在多个可调色散补偿器中的每一个中设置的色散量，以及包括在 对于多个可调色散补偿器中的每一个，其中所述控制器基于所述多个可调色散补偿器所需的色散的总量来确定要设置在所述多个可调色散补偿器中的每一个中的色散量的色散和波长带 多个可调谐色散补偿器和包括在表中的对应关系，使得多个可调色散补偿器中具有最宽波段的第一可调色散补偿器的带宽与具有最窄波段的第二可调色散补偿器之间的差异， 是withi 在给定范围内。

公开(公告)号：US08259390B2

公开(公告)日：2012-09-04

申请号：US12409054

申请日：2009-03-23

申请人： Ryuta Hoshi ,  Toshihiro Ohtani

发明人： Ryuta Hoshi ,  Toshihiro Ohtani

IPC分类号： H01S5/00 ,  H04B10/12

CPC分类号： H01S5/50 ,  H01S3/005 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/1305 ,  H01S3/2316 ,  H01S5/0683 ,  H04B10/296

摘要： An optical amplifier apparatus includes an optical amplifier including an amplification medium doped with an active substance, the amplification medium excited in order to amplify light; a semiconductor optical amplifier arranged after the optical amplifier; a driver for supplying a driving current with respect to the semiconductor optical amplifier in order that the semiconductor optical amplifier has an amplification characteristic with respect to an input light, the amplification characteristic including a gain non-saturated region and a gain saturated region; and an input-light level adjuster for adjusting an out put light of the optical amplifier to the input light level of the semiconductor optical amplifier, the input light level being set up between the gain non-saturated region and the gain saturated region.

摘要翻译： 一种光放大器装置，包括：光放大器，包括掺杂有活性物质的放大介质，所述放大介质被激发以放大光; 配置在光放大器之后的半导体光放大器; 用于向半导体光放大器提供驱动电流的驱动器，以使得半导体光放大器具有相对于输入光的放大特性，该放大特性包括增益非饱和区和增益饱和区; 以及输入光电平调整器，用于将所述光放大器的输出光调整到所述半导体光放大器的输入光电平，所述输入光电平建立在所述增益不饱和区域和所述增益饱和区域之间。

公开(公告)号：US07813647B2

公开(公告)日：2010-10-12

申请号：US11987900

申请日：2007-12-05

申请人： Toshihiro Ohtani

发明人： Toshihiro Ohtani

IPC分类号： H04B10/12

CPC分类号： H04B10/25133

摘要： A chromatic dispersion compensation control method for compensating the chromatic dispersion of an optical transmission path with a variable dispersion compensator inserted in the optical transmission path is disclosed. The method includes a transmitter inserting a fixed data sequence in the rewritable area of a transmission data sequence to be transmitted and transmitting the transmission data sequence to the optical transmission path, the fixed data sequence containing alternating 0-1 data formed of alternating 0s and 1s and alternating 0 series-1 series data formed of alternating series of 0s and 1s; and a receiver determining a direction to increase or decrease the dispersion compensation of the variable dispersion compensator based on the number of error occurrences in the alternating 0-1 data and the number of error occurrences in the alternating 0 series-1 series data, and variably controlling the dispersion compensation of the variable dispersion compensator in accordance with the determined direction.

摘要翻译： 公开了一种色散补偿控制方法，用于通过插入在光传输路径中的可变色散补偿器来补偿光传输路径的色散。 该方法包括：发送器将固定数据序列插入到要发送的发送数据序列的可重写区域中，并将发送数据序列发送到光传输路径，该固定数据序列包含由0和1交替形成的交替0-1数据 交替的0s和1s系列交替出现0系列串联数据; 以及接收机，基于交替的0-1数据中的错误发生次数和交替的0系列-1系列数据中的出错次数，确定可变色散补偿器的色散补偿的增加或减小的方向，并且可变地 根据确定的方向控制可变色散补偿器的色散补偿。

公开(公告)号：US07324189B2

公开(公告)日：2008-01-29

申请号：US11277559

申请日：2006-03-27

申请人： Toshihiro Ohtani

发明人： Toshihiro Ohtani

IPC分类号： G01N21/00

CPC分类号： H04B10/2537 ,  H04B10/0775 ,  H04B10/0777

摘要： The present invention provides provide a light power adjusting method, an optical transmitter, and an optical receiver suitable for ensuring high data transmission quality by preventing the rapid increase in SBS which occurs when the light power exceeds a predetermined value.The incident light power with which the SBS-induced backward propagating light included in the reflected light returned from the optical transmission line rapidly increases, i.e., the light power threshold is calculated.By setting the power of the light incident on the optical transmission line at a value equal to or smaller than the thus calculated light power threshold, the rapid increase in the SBS-induced backward propagating light, which is a nonlinear phenomenon of the optical fiber, is prevented.

摘要翻译： 本发明提供了一种光功率调节方法，光发射机和光接收机，其适用于通过防止当光功率超过预定值时发生的SBS的快速增加来确保高数据传输质量。 由光传输线返回的反射光中包含的SBS引起的反向传播光的入射光功率快速增加，即计算光功率阈值。 通过将入射到光传输线上的光的功率设定为等于或小于由此计算出的光功率阈值的值，作为光纤的非线性现象的SBS感应的反向传播光的快速增加， 被阻止

公开(公告)号：US07251072B2

公开(公告)日：2007-07-31

申请号：US10635723

申请日：2003-08-07

申请人： Toshihiro Ohtani ,  Tsukasa Takahashi ,  Eiji Ishikawa ,  Hiroto Ikeda ,  Hiroyuki Deguchi

发明人： Toshihiro Ohtani ,  Tsukasa Takahashi ,  Eiji Ishikawa ,  Hiroto Ikeda ,  Hiroyuki Deguchi

IPC分类号： H04B10/17

CPC分类号： H04B10/2937 ,  H01S3/302 ,  H04B10/0775 ,  H04B10/2916 ,  H04B2210/078 ,  H04B2210/08

摘要： A reliable optical transmission system with an improved signal control mechanism that avoids abrupt power variations of light beams, thereby preventing optical supervisory channel (OSC) signals from experiencing errors. An optical amplifier amplifies main signals under the control of an optical amplifier controller, which spends a first predetermined time to raise the output power of the optical amplifier up to a desired level. A pump light source produces a pump beam for injection to a fiber-optic transmission line so as to make it serve as an amplifying medium. The pump light source is controlled by a pump light source controller that spends a second predetermined time to raise the pump beam to a desired power level. This stepwise start-up process of the amplifier power and pump beam power prevents OSC signals from experiencing abrupt power variations.

摘要翻译： 一种具有改进的信号控制机制的可靠的光传输系统，其避免了光束的突然功率变化，从而防止光监控信道（OSC）信号经历错误。 光放大器在光放大器控制器的控制下放大主信号，光放大器控制器花费第一预定时间将光放大器的输出功率提高到期望的水平。 泵浦光源产生用于注射到光纤传输线的泵浦光束，以使其用作放大介质。 泵浦光源由泵浦光源控制器控制，泵控制器花费第二预定时间将泵浦光束升高到期望的功率水平。 放大器功率和泵浦波束功率的逐步启动过程防止OSC信号经历突然的功率变化。

公开(公告)号：US08131159B2

公开(公告)日：2012-03-06

申请号：US12457051

申请日：2009-05-29

申请人： Toshihiro Ohtani

发明人： Toshihiro Ohtani

IPC分类号： H04B10/04

CPC分类号： H04B10/2942

摘要： In a transmission apparatus, a monitor unit monitors a signal level and generates a monitored value; a level control unit controls the level of the input signal in accordance with the monitored value; an output amplification unit amplifies and outputs the level-controlled signal; and a control unit controls unit operation statuses in accordance with setting information. The control unit recognizes the period of duration of a single level in the input signal, from the signal format given by the setting information, and performs variable control of at least one of a monitor time constant, a response time from the signal input to the monitor unit until the generation of the monitored value, and a level setting time constant, a response time from the input of the monitored value to the level control unit until the execution of level control, in accordance with the period of duration of the single level.

摘要翻译： 在发送装置中，监视单元监视信号电平并产生监视值; 电平控制单元根据监视值控制输入信号的电平; 输出放大单元放大并输出电平控制信号; 并且控制单元根据设置信息控制单元操作状态。 控制单元根据由设定信息给出的信号格式来识别输入信号中的单个电平的持续时间，并且执行监视时间常数，从输入信号到信号的响应时间中的至少一个的可变控制 监视单元，直到监视值的产生，以及电平设定时间常数，从监视值的输入到电平控制单元的响应时间，直到执行电平控制，根据单级持续时间 。

公开(公告)号：US07519300B2

公开(公告)日：2009-04-14

申请号：US10861568

申请日：2004-06-07

申请人： Toshihiro Ohtani ,  Masaki Sato

发明人： Toshihiro Ohtani ,  Masaki Sato

IPC分类号： H04B10/02

CPC分类号： H04B10/0793 ,  H04B2210/08

摘要： In an optical transmission node network in which a first optical transmission node is connected with a second optical transmission nodes through an optical fiber cable and automatic optical output (APSD: Automatic Power Shut-Down) control is activated, after the APSD control is brought into an inhibited status, if an optical conduction to the second optical transmission node is detected, the APSD control inhibited status is canceled. In this way, if an optical transmission fiber is resorted (reconnected) after optical output power measurement or the like is carried out, the APSD control inhibition status (invalid status) is canceled for automatically restoring the APSD control activated status. Thus, optical output can be prevented from being inadvertently emitted at a high energy level from the optical fiber cable.

摘要翻译： 在通过光纤电缆连接第一光传输节点和自动光输出（APSD：自动关机）控制的光传输节点网络中，在APSD控制进入 禁止状态，如果检测到到第二光传输节点的光导通，则APSD控制禁止状态被取消。 以这种方式，如果在执行光输出功率测量等之后进行光传输光纤（重新连接），则APSD控制禁止状态（无效状态）被取消以自动恢复APSD控制激活状态。 因此，可以防止光输出从光纤电缆以高能级无意地发射。