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1. 发明授权

US10020878B2 Optical signal-to-noise ratio monitor and method for measuring optical signal to-noise ratio 有权
公开(公告)号：US10020878B2
公开(公告)日：2018-07-10
申请号：US14689648
申请日：2015-04-17
申请人： FUJITSU LIMITED
发明人： Shoichiro Oda , Yasuhiko Aoki , Hiroki Oi , Satoru Okano , Yoichi Akasaka , Jeng-Yuan Yang
IPC分类号： H04B10/08 , H04B10/079 , H04J14/06
CPC分类号： H04B10/07953 , H04J14/06
摘要： An optical signal-to-noise ratio monitor includes: a measuring unit that measures an optical signal-to-noise ratio of a polarization multiplexed optical signal, a polarization state of the polarization multiplexed optical signal changing with respect to time; a selector that selects, from a plurality of optical signal-to-noise ratios measured by the measuring unit at a plurality of measurement points within a designated measurement period, an optical signal-to-noise ratio that is higher than an average of the plurality of optical signal-to-noise ratios; and an output unit that outputs the optical signal-to-noise ratio selected by the selector.

2. 发明申请

US20180097562A1 NETWORK CONTROLLER AND SIGNAL QUALITY ESTIMATING METHOD 审中-公开
公开(公告)号：US20180097562A1
公开(公告)日：2018-04-05
申请号：US15821018
申请日：2017-11-22
申请人： FUJITSU LIMITED
发明人： Shoichiro Oda , Yasuhiko Aoki , Takeshi Hoshida , Hisao Nakashima , Hiroki Oi
IPC分类号： H04B10/079 , H04J14/02
CPC分类号： H04B10/07953 , H04B10/0793 , H04J14/0256
摘要： A network controller includes: a first acquisition unit configured to acquire, based on a signal quality amount of each of wavelength paths set in a network of an optical wavelength-multiplexed transmission system, a signal quality amount of each of spans in each of the wavelength paths; an arithmetic unit configured to calculate a signal quality amount of each of spans in a wavelength path of an estimation target, based on the signal quality amount acquired by the first acquisition unit; and an estimation unit configured to estimate a signal quality amount of the wavelength path of the estimation target, based on the signal quality amount calculated by the arithmetic unit.

3. 发明授权

US09838148B2 Optical receiver and superimposed signal detecting method 有权
公开(公告)号：US09838148B2
公开(公告)日：2017-12-05
申请号：US15095698
申请日：2016-04-11
申请人： FUJITSU LIMITED
发明人： Goji Nakagawa , Tomohiro Yamauchi , Guoxiu Huang , Setsuo Yoshida , Shoichiro Oda , Kyosuke Sone , Yasuhiko Aoki
IPC分类号： H04J14/02 , H04B10/077 , H04B10/25
CPC分类号： H04J14/0221 , H04B10/077 , H04B10/25 , H04J14/0278
摘要： An optical receiver includes: a tunable filter configured to partially transmit a wavelength-multiplexed optical-signal including a first optical-signal having a first wavelength, a second optical-signal having a second wavelength, and a third optical-signal having a third wavelength, with a frequency-modulated signal superimposed on each of the first to third optical-signals; a photo detector configured to detect an optical-power of the wavelength-multiplexed optical-signal transmitted through the tunable filter; and a superimposed signal detector configured to detect the frequency-modulated signal superimposed on the first optical-signal, based on an amplitude-modulated signal according to a variation in the optical-power on a first filter setting where both of the first optical-signal and the second optical-signal transmit through the tunable filter, and an amplitude-modulated signal according to a variation in the optical-power on a second filter setting where both of the first optical-signal and the third optical-signal transmit through the tunable filter.

4. 发明授权

US09705604B2 Communication device and wavelength adjustment method 有权
公开(公告)号：US09705604B2
公开(公告)日：2017-07-11
申请号：US15080939
申请日：2016-03-25
申请人： FUJITSU LIMITED
发明人： Kyosuke Sone , Setsuo Yoshida , Goji Nakagawa , Shoichiro Oda , Yasuhiko Aoki
IPC分类号： H04B10/079 , H04B10/572 , H04J14/02
CPC分类号： H04B10/572 , H04B10/07955 , H04J14/02
摘要： A communication device that receives received signal light from another communication device, the communication device includes: a receiver configured to receive signal light output from an optical filter that outputs signal light of a given wavelength included the received signal light; and a transmitter configured to transmit, to the another communication device, a control signal for controlling a wavelength of laser light for use in generation of the signal light of the given wavelength, wherein the receiver is configured to detect power of the signal light output from the optical filter; and the transmitter is configured to set, when the signal light is not successfully received in the receiver, the control signal so as to cause the another communication device to control the wavelength of the laser light, based on the power.

5. 发明授权

US09686016B2 Optical transmission apparatus, optical transmission system, and control method of optical transmission system 有权
公开(公告)号：US09686016B2
公开(公告)日：2017-06-20
申请号：US14801356
申请日：2015-07-16
申请人： FUJITSU LIMITED
发明人： Shoichiro Oda , Kentaro Nakamura , Yasuhiko Aoki
IPC分类号： H04B10/11 , H04B10/564 , H01S3/10 , H04B10/293
CPC分类号： H04B10/564 , H01S3/10015 , H04B10/2935
摘要： An optical transmission apparatus includes: an optical amplifier configured to amplify an optical signal; an optical power adjustment unit configured to adjust power of the optical signal output from the optical amplifier; and a controller configured to control an adjustment amount of the optical power in the optical power adjustment unit, in accordance with optical power control information obtained based on output optical power information per wavelength indicating output optical power that the optical amplifier is capable of outputting depending on a number of wavelengths included in the optical signal, and requisite signal quality information in a reception node which is to receive the optical signal output from the optical amplifier.

6. 发明申请

US20140270756A1 MEASUREMENT DEVICE, MEASUREMENT METHOD, TRANSFER DEVICE, AND OPTICAL NETWORK 有权
标题翻译：测量设备，测量方法，传输设备和光网络
公开(公告)号：US20140270756A1
公开(公告)日：2014-09-18
申请号：US14105960
申请日：2013-12-13
申请人： FUJITSU LIMITED
发明人： Shoichiro ODA , Yasuhiko Aoki
IPC分类号： H04B10/079
CPC分类号： H04B10/07953 , H04B10/0791
摘要： A measurement device includes a first obtaining unit configured to obtain a first power ratio that indicates a ratio of optical signal power of a first wavelength in a first spectrum at a reception device to optical signal power of a second wavelength different from the first wavelength in the first spectrum; a second obtaining unit configured to obtain a second power ratio that indicates a ratio of optical signal power of the first wavelength in a second spectrum at a transmission device to optical signal power of the second wavelength in the second spectrum; a calculation unit configured to calculate an OSNR of the optical signal at the reception device using the first power ratio obtained by the first obtaining unit and the second power ratio obtained by the second obtaining unit; and an output unit configured to output the OSNR calculated by the calculation unit.
摘要翻译：测量装置包括：第一获取单元，被配置为获得指示在接收装置处的第一频谱中的第一波长的光信号功率与不同于第一波长的第二波长的光信号功率的比率的第一功率比第一光谱第二获取单元，被配置为获得表示发送装置的第二频谱中的第一波长的光信号功率与第二频谱中的第二波长的光信号功率的比率的第二功率比; 计算单元，被配置为使用由第一获取单元获得的第一功率比和由第二获取单元获得的第二功率比来计算接收设备处的光信号的OSNR; 以及输出单元，被配置为输出由所述计算单元计算的所述OSNR。

7. 发明申请

US20130251365A1 OPTICAL POWER MONITOR, OPTICAL POWER CONTROL SYSTEM AND OPTICAL POWER MONITOR METHOD 有权
标题翻译：光功率监测器，光功率控制系统和光功率监测方法
公开(公告)号：US20130251365A1
公开(公告)日：2013-09-26
申请号：US13693237
申请日：2012-12-04
申请人： FUJITSU LIMITED
发明人： Kyosuke SONE , Yasuhiko Aoki , Takahito Tanimura , Toshiki Tanaka , Shoichiro Oda
IPC分类号： H04B17/00
CPC分类号： H04B10/07955 , H04J14/0201 , H04J14/0221
摘要： An optical power monitor that detects optical power of respective wavelengths of a signal light in a wavelength multiplexing system, includes: a light emitter configured to superimpose a frequency modulation component on a signal light; a wavelength tunable filter configured to sweep a pass band of the signal light across a wavelength band for a signal light; and a detector configured to detect intensity changes in optical power passing through the wavelength tunable filter with a frequency modulation of the optical power, and to detect an optical power measurement value at a middle point of two points of the intensity changes of the optical power as the optical power of a wavelength to be measured.
摘要翻译：一种检测波长多路复用系统中的信号光的波长的光功率的光功率监视器，包括：发射器，被配置为在信号光上叠加调频分量; 波长可调滤波器，其被配置为扫描信号光的通带，用于信号光的波长带; 以及检测器，被配置为通过光功率的频率调制来检测通过波长可调滤波器的光功率的强度变化，并且检测光功率强度变化的两点的中点处的光功率测量值，要测量的波长的光功率。

8. 发明申请

US20130121691A1 OPTICAL TRANSMISSION SYSTEM, OPTICAL TRANSMISSION APPARATUS, SIGNAL CONDITIONING PROGRAM, AND SIGNAL CONDITIONING METHOD 有权
标题翻译：光传输系统，光传输装置，信号调节方案及信号调理方法
公开(公告)号：US20130121691A1
公开(公告)日：2013-05-16
申请号：US13625987
申请日：2012-09-25
申请人： FUJITSU LIMITED
发明人： Shoichiro Oda , Takeshi Hoshida , Hisao Nakashima , Takahito Tanimura , Yasuhiko Aoki
IPC分类号： H04B10/08
CPC分类号： H04J14/0221 , H04B10/506 , H04B10/564 , H04J14/0212 , H04J14/0254 , H04J14/0271
摘要： An optical transmission system includes optical transmission apparatuses configured to transmit wavelength-division multiplexed light signals via lightpaths, each of a pair of optical transmission apparatuses includes a conditioning unit configured to adjust the optical intensities of channels included in the wavelength-division multiplexed light signal, and one or more first processors configured to control, based on a conditioning level notified, the conditioning unit; and a managing apparatus configured to manage the pair of the optical transmission apparatuses, the managing apparatus including one or more second processors configured to compute a conditioning level on a basis of system information for respective the pair of optical transmission apparatuses in the optical transmission system.
摘要翻译：光传输系统包括被配置为经由光路发送波分复用光信号的光传输装置，一对光传输装置中的每一个包括调整部，其被配置为调整包括在波分复用光信号中的信道的光强度，以及一个或多个第一处理器，被配置为基于所通知的调节级别来控制所述调节单元; 以及管理装置，被配置为管理所述一对光传输装置，所述管理装置包括一个或多个第二处理器，所述第二处理器被配置为基于所述光传输系统中的所述一对光传输装置的系统信息来计算调节级别。

9. 发明授权

US09847837B2 Optical line termination, communication system, and communication control method 有权
公开(公告)号：US09847837B2
公开(公告)日：2017-12-19
申请号：US15368004
申请日：2016-12-02
申请人： FUJITSU LIMITED
发明人： Kyosuke Sone , Yasuhiko Aoki
IPC分类号： H04B10/00 , H04B10/27 , H04B10/80 , H04W52/02 , H04W88/08
CPC分类号： H04B10/27 , H04B10/25754 , H04B10/80 , H04W52/0235 , H04W88/08 , H04W88/085 , Y02D70/46
摘要： An optical line termination includes a detection circuit configured to detect a sleep request from a control apparatus to base stations; a determination circuit configured to determine, when the detection circuit detects the sleep request, whether processing of turning the base stations of requestees by the sleep request into a sleep state in accordance with the sleep request is approvable or not, based on a shortage bandwidth within a passive optical network in a different one of the base stations having a predetermined relationship with the requested base station; and a control circuit configured to discard the sleep request when the determination circuit determines that the processing is not approvable, or transfer the sleep request to the base station of the different requestee when the determination circuit determines that the processing is approval.

10. 发明申请

US20170279528A1 DEVICE AND METHOD FOR MONITORING TRANSMISSION CHARACTERISTICS 有权
公开(公告)号：US20170279528A1
公开(公告)日：2017-09-28
申请号：US15457150
申请日：2017-03-13
申请人： FUJITSU LIMITED
发明人： GUOXIU HUANG , Yasuhiko Aoki , Shoichiro Oda , Setsuo Yoshida
IPC分类号： H04B10/079 , H04J14/02 , H04B10/548
CPC分类号： H04B10/07955 , H04B10/548 , H04J14/0212
摘要： A transmission characteristics monitoring device monitors transmission characteristics of an optical transmission path between nodes. The device detects an average power of the frequency modulated optical signal and a slope of the transmission characteristics; generates a slope function that represents a slope of the transmission characteristics between first and second frequencies; generates a corrected power value by adding an integral of the slope function to a first power measurement value detected at the first frequency;calculates the transmission characteristics at the second frequency based on a second power measurement value detected at the second frequency when the difference between the second power measurement value and the corrected power value is smaller than a specified threshold; and calculates the transmission characteristics at the second frequency based on the corrected power value when the difference is greater than the specified threshold.

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