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1. 发明授权

EP1788426B1 OPTICAL COMMUNICATION SYSTEM WITH RAMAN AMPLIFIER 有权
标题翻译： OPTISCHES KOMMUNIKATIONSSYSTEM MITRAMANVERSTÄRKER
公开(公告)号：EP1788426B1
公开(公告)日：2012-12-12
申请号：EP04772458.8
申请日：2004-08-30
申请人： Mitsubishi Electric Corporation , Independent Administrative Institution Japan Agency for Marine-Earth Science and Technology
发明人： TOKURA, Toshiyuki , SHIMIZU, Katsuhiro , FUJIEDA, Tasuku , ASAKAWA, Ken'ichi , MIKADA, Hitoshi , KAWAGUCHI, Katsuyoshi
IPC分类号： G01V1/22 , H01S3/094 , H01S3/10 , H01S3/30 , H04B10/17
CPC分类号： H01S3/302 , H01S3/06725 , H01S3/06758 , H01S3/094076 , H01S3/0941 , H01S3/10007 , H04B10/2916

2. 发明授权

EP3054605B1 OPTICAL TRANSMISSION LINE SWITCHING APPARATUS 有权
公开(公告)号：EP3054605B1
公开(公告)日：2018-11-28
申请号：EP13895111.6
申请日：2013-10-04
申请人： Mitsubishi Electric Corporation
发明人： TOKURA, Toshiyuki , CHIKAMORI, Shun
IPC分类号： H04B10/032 , H04B10/296 , H04J14/00 , H04Q11/00
CPC分类号： H04B10/032 , H04J14/0221 , H04J14/0227 , H04J14/0291 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0043
摘要： A device includes a threshold setting unit that sets a threshold for an input optical power monitor to detect the input optical power to the optical transmission line of an active system; a threshold deciding unit that decides whether the input optical power to the optical transmission line of the active system detected by the input optical power monitor is not greater than the threshold set by the threshold setting unit or not; and an attenuation controller that carries out, when the threshold deciding unit decides that the input optical power is not greater than the threshold, system switching by controlling first variable optical attenuators so as to gradually reduce attenuation of the signal light rays input from the optical transmission line of one backup system, and to gradually increase attenuation of the signal light rays input from the optical transmission line of the active system.

3. 发明授权

EP2020767B1 OPTICAL RELAY DEVICE AND OPTICAL RELAY TRANSMISSION SYSTEM 有权
标题翻译：光学继电器装置和光学继电器传输系统
公开(公告)号：EP2020767B1
公开(公告)日：2017-08-02
申请号：EP06746856.1
申请日：2006-05-25
申请人： Mitsubishi Electric Corporation
发明人： TOKURA, Toshiyuki , SHIMIZU, Katsuhiro , ISHIDA, Kazuyuki , MOTOSHIMA, Kuniaki
IPC分类号： H04B10/29 , H04B10/291 , H04J14/02 , H04B10/296
CPC分类号： H04J14/0221 , H04B10/296 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/021 , H04J14/0227 , H04J14/0246 , H04J14/0279

4. 发明公开

EP2613459A1 OPTICAL COMMUNICATION SYSTEM 审中-公开
标题翻译：优化KOMMUNIKATIONSSYSTEM
公开(公告)号：EP2613459A1
公开(公告)日：2013-07-10
申请号：EP10856718.1
申请日：2010-09-03
申请人： Mitsubishi Electric Corporation
发明人： TOKURA, Toshiyuki , ISHIDA, Kazuyuki , MIZUOCHI, Takashi
IPC分类号： H04B10/08 , H04J14/00 , H04J14/02
CPC分类号： H04J14/02 , H04B10/0777 , H04B10/29 , H04B10/2916 , H04B2210/074 , H04J14/0276
摘要： An optical communication system includes an optical-signal transmission unit 1 transmitting an existing optical signal and a low-rate-signal superimposition unit 3 superimposing a low-rate signal on the existing optical signal by intensity modulation. It further includes: a low-rate-signal extraction unit 9 that extracts the low-rate signal from the existing optical signal on which the low-rate signal is superimposed and converts the extracted low-rate signal into a low-rate electric signal; an add-on optical-signal transmission unit 4 that transmits an add-on optical signal; a low-rate-signal superimposition unit 10 that superimposes a low-rate signal on the add-on optical signal by the intensity modulation based on the low-rate electric signal; and a repeater 5 that repeats the add-on optical signal on which the low-rate signal is superimposed, to a transmission destination.
摘要翻译：光通信系统包括：光信号传输单元1，其通过强度调制将现有光信号和低速信号叠加单元3叠加在现有光信号上。它还包括：低速率信号提取单元9，其从叠加有低速率信号的现有光信号中提取低速率信号，并将所提取的低速率信号转换为低速电信号; 发送附加光信号的附加光信号发送单元4; 低速率信号叠加单元10，其通过基于低速率电信号的强度调制将低速率信号叠加在附加光信号上; 以及中继器5，其将叠加有低速率信号的附加光信号重复发送到发送目的地。

5. 发明授权

EP2930800B1 OPTICAL AMPLIFIER, WAVELENGTH MULTIPLEXING OPTICAL TRANSMISSION SYSTEM, AND PROGRAM 有权
公开(公告)号：EP2930800B1
公开(公告)日：2020-02-19
申请号：EP12889712.1
申请日：2012-12-05
申请人： Mitsubishi Electric Corporation
发明人： TOKURA, Toshiyuki , ISHIDA, Kazuyuki
IPC分类号： H01S3/10 , H01S3/067 , H01S3/13 , H04B10/296 , H04J14/02 , H01S3/0941

6. 发明授权

EP2256971B1 OPTICAL TRANSMISSION SYSTEM AND REPEATER 有权
标题翻译：光传输系统和重发器
公开(公告)号：EP2256971B1
公开(公告)日：2017-07-05
申请号：EP08703629.9
申请日：2008-01-22
申请人： Mitsubishi Electric Corporation
发明人： YOSHIDA, Tsuyoshi , TOKURA, Toshiyuki , SUGIHARA, Takashi , SHIMIZU, Katsuhiro , UEMURA, Aritomo , SHIMA, Hiroki , ONOHARA, Kiyoshi
IPC分类号： H04J14/00 , H04J14/02
CPC分类号： H04J14/0221

7. 发明公开

EP2930800A1 OPTICAL AMPLIFIER, WAVELENGTH MULTIPLEXING OPTICAL TRANSMISSION SYSTEM, AND PROGRAM 有权
标题翻译： OPTISCHERVERSTÄRKER，OPTISCHESWELLENLÄNGENMULTIPLEX-ÜBERTRAGUNGSSYSTEMUND PROGRAMM
公开(公告)号：EP2930800A1
公开(公告)日：2015-10-14
申请号：EP12889712.1
申请日：2012-12-05
申请人： Mitsubishi Electric Corporation
发明人： TOKURA, Toshiyuki , ISHIDA, Kazuyuki
IPC分类号： H01S3/10
摘要： When multiplexed signal lights (MS1, MS2) are amplified by optical amplifiers (10), a value of a monitor signal (E1) is compared with a threshold equivalent to a value of the monitor signal (E1) when noise indexes of the multiplexed signal lights (MS1, MS2) start increasing. Next, when the value of the monitor signal (E1) is equal to or larger than the threshold, that is, when the powers of the multiplexed signal lights (MS1, MS2) are large, a gain constant control is performed to amplify the multiplexed signal lights (MS1, MS2). Conversely, when the value of the monitor signal (E1) is smaller than the threshold, that is, when the powers of the multiplexed signal lights (MS1, MS2) are small, an output constant control is performed to amplify the multiplexed signal lights (MS1, MS2).
摘要翻译：当多路复用信号光（MS1，MS2）被光放大器（10）放大时，当多路复用信号的噪声指数时，将监视信号（E1）的值与等于监视信号（E1）的值的阈值进行比较灯（MS1，MS2）开始增加。接下来，当监视信号（E1）的值等于或大于阈值时，即，当多路复用信号光（MS1，MS2）的功率较大时，执行增益恒定控制以放大多路复用信号灯（MS1，MS2）。相反，当监视信号（E1）的值小于阈值时，即当多路信号光（MS1，MS2）的功率小时，执行输出常数控制以放大多路复用信号光（ MS1，MS2）。

8. 发明授权

EP3096181B1 EXCITATION LIGHT SOURCE DEVICE AND OPTICAL TRANSMISSION SYSTEM 有权转让
公开(公告)号：EP3096181B1
公开(公告)日：2018-12-05
申请号：EP14878715.3
申请日：2014-01-16
申请人： Mitsubishi Electric Corporation
发明人： IMANISHI, Katsunori , TOKURA, Toshiyuki , SUEOKA, Hideki , TAKATA, Kengo
IPC分类号： G02F1/35 , H04B10/291 , H04B10/071
CPC分类号： H04B10/2916 , G02B6/264 , H04B10/07 , H04B10/071 , H04B10/0775 , H04B10/0791
摘要： An excitation light source device includes: an excitation light source to generate the Raman excitation light; a light source controller to control an intensity of the Raman excitation light; an amplified spontaneous emission noise measurer to measure an intensity of amplified spontaneous emission noise caused by the Raman excitation light; and a transmission line abnormality analyzer to detect abnormality in the transmission line on a basis of a control state of the light source controller and a measurement result of the amplified spontaneous emission noise measurer. In a state where the abnormality is not detected, the light source controller controls the intensity of the Raman excitation light to gradually increase to a set value. In a state where the abnormality is detected, the light source controller controls the excitation light source to stop or reduce generation of the Raman excitation light.

9. 发明公开

EP3379662A1 OPTICAL AMPLIFIER 审中-公开
公开(公告)号：EP3379662A1
公开(公告)日：2018-09-26
申请号：EP15908762.6
申请日：2015-11-19
申请人： Mitsubishi Electric Corporation
发明人： MIURA, Hiroshi , TOKURA, Toshiyuki
IPC分类号： H01S3/10 , H01S3/067 , H01S3/0941
CPC分类号： H01S3/1305 , H01S3/0078 , H01S3/06754 , H01S3/06758 , H01S3/094003 , H01S3/094011 , H01S3/0941 , H01S3/09415 , H01S3/10015 , H01S3/1003 , H01S3/10069 , H01S3/1301 , H01S3/1312 , H01S3/1608 , H01S2301/04 , H04B10/0777 , H04B10/2931 , H04B10/296
摘要： An optical amplifier is provided which can suppress, without measuring signal beam power at individual wavelengths, wavelength-dependence of gain with respect to a signal beam into which multiple signal beams having respective wavelengths different from each other are multiplexed. The optical amplifier (100) according to the present invention can suppress wavelength-dependence of gain by giving loss in accordance with a linear-loss slope to an amplified signal beam. The optical amplifier (100) is provided with a variable tilt equalizer (11) for varying a loss slope value representing the slope of the loss slope and a tilt control unit (22) for controlling a loss slope value of the variable tilt equalizer (11).

10. 发明公开

EP2256971A1 OPTICAL TRANSMISSION SYSTEM AND REPEATER 有权
标题翻译：光传输系统和Repeater
公开(公告)号：EP2256971A1
公开(公告)日：2010-12-01
申请号：EP08703629.9
申请日：2008-01-22
申请人： Mitsubishi Electric Corporation
发明人： YOSHIDA, Tsuyoshi , TOKURA, Toshiyuki , SUGIHARA, Takashi , SHIMIZU, Katsuhiro , UEMURA, Aritomo , SHIMA, Hiroki , ONOHARA, Kiyoshi
IPC分类号： H04J14/00 , H04B10/08 , H04B10/16 , H04B10/17 , H04J14/02
CPC分类号： H04J14/0221
摘要： A repeater includes a variable optical attenuating unit that collectively attenuates WDM optical signal input from an upstream side, an optical-attenuation adjusting unit that adjusts attenuation of a signal level of the WDM optical signal in the variable optical attenuating unit, and an optical amplifying unit that collectively amplifies the WDM optical signal collectively attenuated, and outputs the WDM optical signal collectively amplified at a predetermined amplification gain to a downstream side. An optical-attenuation adjusting unit includes an input level detector that detects a signal level of WDM optical signal input to the own repeater; an output level detector that detects a signal level of WDM optical signal amplified by the optical amplifying unit and output to a downstream side; an output-level transmitting unit that receives information of a signal level of WDM optical signal output by a repeater at an upstream side and transmits information of a signal level of the WDM optical signal detected by the output level detector to a repeater at a downstream side; and an attenuation amount controller that controls the variable optical attenuating unit by calculating an attenuation amount in the variable optical attenuating unit based on information of a signal level detected by the input level detector and a signal level received by the output-level transmitting unit.

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