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1. 发明公开

US20230224033A1 FAULT DETECTION METHOD FOR OPTICAL SWITCHING APPARATUS, NETWORK DEVICE, AND SYSTEM 审中-公开
公开(公告)号：US20230224033A1
公开(公告)日：2023-07-13
申请号：US18154227
申请日：2023-01-13
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Yun LONG , Zhiwen CHANG , Fan AI
IPC分类号： H04B10/077
CPC分类号： H04B10/0771 , H04B10/0777
摘要： The technology of this application relates to a fault detection method for an optical switching apparatus, a network device, and a system, to improve accuracy and efficiency of detecting whether the optical switching apparatus is faulty. The method includes sending a probe optical signal to a target path, where the probe optical signal is to be transmitted along the target path, and the target path includes at least one optical switching apparatus, receiving a plurality of reflected optical signals from the target path, where the plurality of reflected optical signals are formed after the probe optical signal is reflected by the target path, determining a target reflected optical signal in the plurality of reflected optical signals, where the target reflected optical signal is a reflected optical signal reflected by the optical switching apparatus, and determining, based on the target reflected optical signal, whether the optical switching apparatus is faulty.

2. 发明申请

US20180358775A1 OPTICAL AMPLIFIER 审中-公开
公开(公告)号：US20180358775A1
公开(公告)日：2018-12-13
申请号：US15774019
申请日：2015-11-19
申请人： Mitsubishi Electric Corporation
发明人： Hiroshi MIURA , Toshiyuki TOKURA
IPC分类号： H01S3/13 , H01S3/131 , H01S3/0941 , H01S3/067 , H01S3/16
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 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.

3. 发明授权

US09985727B2 Feedback controlled Raman amplification in optical system 有权
公开(公告)号：US09985727B2
公开(公告)日：2018-05-29
申请号：US14697039
申请日：2015-04-27
申请人： Xtera Communications, Inc.
发明人： Wayne S. Pelouch , Stephen Michael Webb , John G. Ellison
IPC分类号： H04B10/079 , H04B10/25 , H04J14/02 , H04B10/077 , H04B10/291 , H01S3/067 , H01S3/13 , H01S3/094 , H01S3/30
CPC分类号： H04B10/07953 , H01S3/06754 , H01S3/094003 , H01S3/094096 , H01S3/1301 , H01S3/302 , H04B10/0777 , H04B10/2504 , H04B10/2916 , H04J14/02
摘要： An optical communication link that includes two nodes interconnected by an optical channel that comprises optical fiber(s), and that is used to communicate an optical signal comprising multiple optical signal wavelengths. The first node provides an optical signal onto the optical channel towards the second node, or receives an optical signal from the optical channel from the second node. A Raman pump provides Raman pump power into the optical fiber of the optical channel to thereby perform Raman amplification of the optical signal in the optical fiber. The second node determines a quality measurement of at least of optical wavelength signals transmitted by the first node to the second node. The second node also transmits information from the quality measurement back to the first node. A controller at the first node controls at least one parameter of the Raman pump in response to this transmitted information.

4. 发明申请

US20180083413A1 RAMAN PUMPING ARRANGEMENT WITH IMPROVED OSC SENSITIVITY 审中-公开
公开(公告)号：US20180083413A1
公开(公告)日：2018-03-22
申请号：US15661756
申请日：2017-07-27
申请人： Xieon Networks S.à.r.l.
发明人： Lutz RAPP
IPC分类号： H01S3/094 , H01S3/30 , H01S3/067 , H01S3/10
CPC分类号： H01S3/094003 , H01S3/06716 , H01S3/06754 , H01S3/10007 , H01S3/30 , H01S3/302 , H04B10/077 , H04B10/0777 , H04B10/2916
摘要： A Raman pumping arrangement for amplifying a data optical signal (40) has a Raman pump (12) for generating a Raman pump signal (44;45), an optical supervisory channel receiver (14) for receiving an optical supervisory channel signal (42) an amplification fiber (15) arranged such that the data optical signal (40), the optical supervisory channel signal (42), and the Raman pump signal (44;45) are transmitted therethrough; and a control unit (13) configured for controlling the operation of the Raman pump (12); wherein the control unit (13) is configured for setting the Raman pump (12) in an operation mode or a start-up mode; wherein in the operation mode, the Raman pump (12) provides an operation pumping power (120), and wherein in the start-up mode, the Raman pump (12) provides a start-up pumping power (122).

5. 发明授权

US09831943B2 Repeater OTDR using repeater based raman pumps 有权
公开(公告)号：US09831943B2
公开(公告)日：2017-11-28
申请号：US14109735
申请日：2013-12-17
申请人： Xtera Communications, Inc.
发明人： Stephen Michael Webb , Wayne S. Pelouch , Do-Il Chang , John G. Ellison
IPC分类号： H04B10/071 , H04B10/80 , H04B10/073 , G01J3/44 , H01S3/09 , H04B10/077
CPC分类号： H04B10/071 , H04B10/0731 , H04B10/0777 , H04B10/80
摘要： A submarine optical repeater includes a submarine amplifier module, which further includes a pumping laser module and an optical detector module. The pumping laser module generates optical amplifications within an optical cable, and, in the case of a fault in the optical cable, the optical detector module detects at least one characteristic of an optical signal caused by the fault in the optical cable. This configuration then identifies a particular signal characteristic that indicates a fault within the optical cable.

6. 发明授权

US09722695B2 Optical network unit and optical detecting method 有权
公开(公告)号：US09722695B2
公开(公告)日：2017-08-01
申请号：US14946984
申请日：2015-11-20
申请人： HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD. , HON HAI PRECISION INDUSTRY CO., LTD.
发明人： Po-Wen Chiang
IPC分类号： H04B10/00 , H04B10/077 , H04Q11/00
CPC分类号： H04B10/0777 , H04B10/40 , H04B10/808 , H04Q11/0067 , H04Q2011/0083
摘要： An optical network unit (ONU) includes an optical transceiver module, a switch, a detecting module, and an ONU chip. The switch is electronically coupled between the optical transceiver module and a power supply. The detecting module is electronically coupled between the switch and the power supply. The detecting module includes a sensor, an amplifier, and a comparator. The sensor is electronically coupled between the power supply and the switch to sense a driving current output from the power supply to the optical transceiver module and output a voltage signal to the amplifier, the amplifier amplifies the voltage signal and outputs an amplified voltage signal to the comparator, the comparator compares the amplified voltage signal with a predetermined voltage signal and outputs a comparison result. The ONU chip controls the switch to connect/disconnect the electrical connection between the optical transceiver module and the power supply according to the comparison result.

7. 发明申请

US20170104530A1 TRANSMISSION APPARATUS AND METHOD FOR CONFIRMING CONNECTION OF OPTICAL FIBER 审中-公开
公开(公告)号：US20170104530A1
公开(公告)日：2017-04-13
申请号：US15274179
申请日：2016-09-23
申请人： FUJITSU LIMITED
发明人： Hiroki Nagata , Masanori Eiro , Daisuke Kobayashi , Tatsuo Nagayoshi
IPC分类号： H04B10/079 , H04B10/25 , H04J14/02 , H04B10/58
CPC分类号： H04B10/07955 , H04B10/0775 , H04B10/0777 , H04B10/2504 , H04B10/58 , H04B2210/078 , H04J14/021 , H04J14/0212
摘要： There is provided a transmission apparatus, which includes: a filter configured to pass an optical signal having a predetermined wavelength received via an optical fiber, a variable optical attenuator configured to attenuate a power level of the optical signal passed by the filter, a first measuring circuit configured to measure a first power of the optical signal before being passed by the filter, a second measuring circuit configured to measure a second power of the optical signal attenuated by the variable optical attenuator, a detector configured to detect a difference between the first power and the second power, and a controller configured to increase an attenuation factor of the variable optical attenuator when the difference is equal to or larger than a first predetermined value.

8. 发明授权

US09577747B2 Photodetection device, photodetection method, and optical transmission device 有权
标题翻译：光检测装置，光电检测方法和光传输装置
公开(公告)号：US09577747B2
公开(公告)日：2017-02-21
申请号：US14557525
申请日：2014-12-02
申请人： FUJITSU LIMITED
发明人： Naoki Yamamoto , Noriaki Mizuguchi
IPC分类号： H04B10/08 , H04J14/06 , H04J14/02 , H04B10/04 , H04B10/12 , H01S3/00 , H04B10/077 , H01S5/0683
CPC分类号： H04B10/0777 , H01S5/06832 , H04B10/506 , H04J14/02 , H04J14/0227 , H04J14/06
摘要： The light reception unit is disposed behind each of a plurality of light sources that emits signal lights having mutually different wavelengths in a forward direction and receives a backlight emitted backward from each of the light sources. The synchronizing signal generation unit generates a synchronizing signal serving as an electric signal synchronized in phase with a drive signal for driving each of the light sources. The multiplication unit multiplies the synchronizing signal and a light reception signal serving as an electric signal obtained by receiving the backlight by the light reception unit. The light power detection unit detects power of the signal light by multiplying an integrated value of a multiplication signal obtained by multiplying the synchronizing signal and the light reception signal by the multiplication unit and a power ratio of the signal light to the backlight stored in a predetermined storage unit.
摘要翻译：光接收单元设置在多个光源中的每一个上，其发射在正向上具有相互不同波长的信号光，并且接收从每个光源向后发射的背光。同步信号产生单元产生用作与用于驱动每个光源的驱动信号同步的电信号的同步信号。乘法单元将同步信号和作为通过光接收单元接收背光获得的电信号的光接收信号相乘。光功率检测单元通过将乘以同步信号和光接收信号的乘法信号的积分值乘以乘法单元，并将信号光的功率比与存储在预定的存储单元。

9. 发明授权

US09094147B2 System control of repeatered optical communications system 有权
标题翻译：重复光通信系统的系统控制
公开(公告)号：US09094147B2
公开(公告)日：2015-07-28
申请号：US13834968
申请日：2013-03-15
申请人： Xtera Communications, Inc.
发明人： Gerhard Willem van Lochem , Stephen Desbruslais , David Winterburn
IPC分类号： H04B10/08 , H04J14/02 , H04B10/077 , H04B10/079
CPC分类号： H04J14/02 , H04B10/0777 , H04B10/07953 , H04B2210/074 , H04J14/0227
摘要： The system-level control of a repeatered optical communications system. In a repeatered optical communications system, two terminals are optically coupled via an optical communications span having one or more repeaters. One of the terminals may perform the control by monitoring quality metrics of optical signals received over the communication span. Based on this monitoring, certain adjustments are determined to be performed, and the repeater controllers of the respective optical repeaters are instructed to perform the adjustments. In some case, the optical repeater adjustments cannot be made without impacting the performance of the optical signals traveling in the opposite direction. In that case, the system-level control uses monitored quality metrics from both terminals to determine the adjustments to be made. The system level adjustment may be automated by software or the like thereby making optimization of the optical communications span easier.
摘要翻译：中继光通信系统的系统级控制。在重复的光通信系统中，两个终端经由具有一个或多个中继器的光通信范围进行光耦合。其中一个终端可以通过监视在通信范围内接收的光信号的质量度量来执行控制。基于该监视，确定执行某些调整，并且指示各个光中继器的中继器控制器进行调整。在某些情况下，光中继器调整不能在不影响在相反方向上行进的光信号的性能的情况下进行。在这种情况下，系统级控制使用来自两个终端的监控质量度量来确定要进行的调整。系统级调整可以通过软件等自动化，从而使光通信范围的优化更容易。

10. 发明申请

US20150086197A1 PHOTODETECTION DEVICE, PHOTODETECTION METHOD, AND OPTICAL TRANSMISSION DEVICE 有权
标题翻译：光电转换装置，光电转换方法和光传输装置
公开(公告)号：US20150086197A1
公开(公告)日：2015-03-26
申请号：US14557525
申请日：2014-12-02
申请人： FUJITSU LIMITED
发明人： Naoki Yamamoto , Noriaki Mizuguchi
IPC分类号： H04B10/077 , H04J14/02
CPC分类号： H04B10/0777 , H01S5/06832 , H04B10/506 , H04J14/02 , H04J14/0227 , H04J14/06
摘要： The light reception unit is disposed behind each of a plurality of light sources that emits signal lights having mutually different wavelengths in a forward direction and receives a backlight emitted backward from each of the light sources. The synchronizing signal generation unit generates a synchronizing signal serving as an electric signal synchronized in phase with a drive signal for driving each of the light sources. The multiplication unit multiplies the synchronizing signal and a light reception signal serving as an electric signal obtained by receiving the backlight by the light reception unit. The light power detection unit detects power of the signal light by multiplying an integrated value of a multiplication signal obtained by multiplying the synchronizing signal and the light reception signal by the multiplication unit and a power ratio of the signal light to the backlight stored in a predetermined storage unit.
摘要翻译：光接收单元设置在多个光源中的每一个上，其发射在正向上具有相互不同波长的信号光，并且接收从每个光源向后发射的背光。同步信号产生单元产生用作与用于驱动每个光源的驱动信号同步的电信号的同步信号。乘法单元将同步信号和作为通过光接收单元接收背光获得的电信号的光接收信号相乘。光功率检测单元通过将乘以同步信号和光接收信号的乘法信号的积分值乘以乘法单元，并将信号光的功率比与存储在预定的存储单元。

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