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1. 发明授权

EP3850771B1 METHOD AND APPARATUS FOR LASER FREQUENCY CONTROL 有权
公开(公告)号：EP3850771B1
公开(公告)日：2024-10-23
申请号：EP20840053.1
申请日：2020-07-15
IPC分类号： H04B10/50 , H04J14/02 , G02F1/29 , H01S5/062 , H04B10/079 , H04B10/572
CPC分类号： H04B10/07957 , H04B10/572 , H04B10/506 , H04B10/0799 , H01S5/0623

2. 发明授权

EP1978653B1 OPTICAL WAVELENGTH MULTIPLEXING ACCESS SYSTEM 有权
公开(公告)号：EP1978653B1
公开(公告)日：2018-06-20
申请号：EP07707514.1
申请日：2007-01-26
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： SUZUKI, Hiroo , YAMADA, Takashi , IWATSUKI, Katsumi
IPC分类号： H04J14/02
CPC分类号： H04J14/0227 , H04B10/0793 , H04B10/07957 , H04J14/0226 , H04J14/0246 , H04J14/025 , H04J14/0282
摘要： According to the present invention, a star-type wavelength multiplexed communication network using optical TX/RX devices capable of assigning the wavelengths can be provided without using the monitoring light. In an embodiment of the present invention, an optical TX/RX device for transmitting and receiving a wavelength-multiplexed signal light comprises an optical receiver capable of varying the RX wavelength and an optical transmitter capable of varying the TX wavelength. The optical TX/RX device detects RX wavelengths not in use via the optical receiver, and assigns the RX wavelength of the optical receiver to one of the RX wavelengths not-in-use, and assigns the TX wavelength of the optical transmitter to a TX wavelength corresponding to the RX wavelength according to a correspondence table of TX and RX wavelengths in the memory. Then, the optical TX/RX device transmits a signal light on this TX wavelength, and detects the response on the RX wavelength. If the response is detected, communication is initiated using the assigned TX wavelength and the RX wavelength. If the response is not detected, the operation is repeated from the detection of RX wavelengths not in use to the transmission of the signal light on TX wavelength again.

3. 发明公开

EP3197078A1 OPTICAL TRANSMISSION APPARATUS, OPTICAL TRANSMISSION SYSTEM, AND METHOD OF CONTROLLING OUTPUT OF OPTICAL SIGNAL 有权
标题翻译：光学传输装置，光学传输系统和控制光学信号输出的方法
公开(公告)号：EP3197078A1
公开(公告)日：2017-07-26
申请号：EP17151366.6
申请日：2017-01-13
申请人： FUJITSU LIMITED
发明人： Yamauchi, Tomohiro , Oda, Shoichiro
IPC分类号： H04J14/02 , H04B10/50 , H04B10/564
CPC分类号： H04B10/07957 , H04B10/0793 , H04B10/07955 , H04B10/0797 , H04B10/293 , H04B10/506 , H04B10/564 , H04J14/0221 , H04J14/0227 , H04J14/0256 , H04J14/0257
摘要： An optical transmission apparatus includes a variable attenuator configured to adjust output intensity of each wavelength signal included in a multiplexed optical signal having been input; a monitor configured to measure an output spectrum of the variable attenuator; a calculation unit configured to calculate an amount of spectral narrowing and an amount of spectral surplus, based on a measured value by the monitor, and a target value set in advance; and a control unit configured to control an amount of attenuation of the variable attenuator, based on the amount of spectral narrowing and the amount of spectral surplus.
摘要翻译：一种光传输设备包括：可变衰减器，被配置为调整包括在已被输入的复用光信号中的每个波长信号的输出强度; 配置成测量可变衰减器的输出频谱的监视器; 计算单元，被配置为基于监视器的测量值和预先设置的目标值来计算分光缩小量和频谱剩余量; 以及控制单元，被配置为基于光谱变窄量和光谱过剩量来控制可变衰减器的衰减量。

4. 发明公开

EP2976846A4 WAVELENGTH SELECTIVE SWITCH HAVING INTEGRATED CHANNEL MONITOR 有权转让
标题翻译：带集成通道监视的波形开关SWITCH
公开(公告)号：EP2976846A4
公开(公告)日：2016-11-16
申请号：EP14769265
申请日：2014-03-20
申请人： NISTICA INC
发明人： WAGENER JEFFERSON L
IPC分类号： H04B10/40 , H04B10/07 , H04J14/02 , H04Q11/00
CPC分类号： G02F1/31 , G02B6/293 , G02B6/35 , H04B10/07955 , H04B10/07957 , H04J14/02 , H04J14/0212 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0022 , H04Q2011/0026 , H04Q2011/0049
摘要： An optical device includes an optical port array having first and second optical inputs for receiving optical beams and a first plurality of optical outputs associated with switching functionality and a second plurality of optical outputs associated with channel monitoring functionality. A dispersion element receives the optical beam from an input and spatially separates the beam into a plurality of wavelength components. The focusing element focuses the wavelength components. The optical path conversion system receives the plurality of wavelength components and selectively directs each one to a prescribed one of the optical ports. The photodetectors are each associated with one of the optical outputs in the second plurality of optical outputs and receive a wavelength component therefrom. The controller causes the optical path conversion system to simultaneously direct each of the wavelength components to a different one of the optical outputs of the second plurality of optical outputs.

5. 发明公开

EP2583390A4 A METHOD AND APPARATUS FOR CHANGING A MODE IN AN OPTICAL NETWORK 有权
标题翻译：方法和设备是用于变形的方式在光网络
公开(公告)号：EP2583390A4
公开(公告)日：2016-06-15
申请号：EP10853323
申请日：2010-06-18
申请人： ERICSSON TELEFON AB L M
发明人： ÖHLÉN PETER
IPC分类号： H04B10/079 , H04B10/572
CPC分类号： H04B10/07957 , H04B10/572
摘要： A method at a transmitter of a tunable laser of controlling a mode change of the laser during a transmission of data to a receiver of a terminating node is based on the determination of a time instance for initiation of the mode change on the basis of the state of the tunable laser. In addition, buffer occupancy and/or the state of the data transmission may be considered when determining such a time instance. In addition, data of the data transmission is buffered during the mode change, such that data loss is avoided during the change of mode. A transmitter is also provided which can execute the suggested mode changing method.

6. 发明公开

EP2928091A1 Method of receiving a wavelength-division multiplexed optical upstream signal in an optical access network 审中-公开
标题翻译：一种用于光接入网络中接收的光波长 - 分割多路复用的上行信号的方法
公开(公告)号：EP2928091A1
公开(公告)日：2015-10-07
申请号：EP14305471.6
申请日：2014-03-31
申请人： ALCATEL LUCENT
发明人： Pöhlmann, Wolfgang
IPC分类号： H04B10/572
CPC分类号： H04B10/27 , H04B10/07955 , H04B10/07957 , H04B10/272 , H04B10/572
摘要： Proposed is a method of receiving a WDM optical upstream signal in an optical access network. The WDM signal is filtered using a first optical filter yielding a first filtered signal. The first optical filter has a flat-top shaped pass-band transfer function. Furthermore the WDM signal is filtered using second optical filter yielding a second filtered signal. The second optical filter has a pass-band transfer function that is strictly monotonically increasing for wavelength values below a center wavelength of the transfer function and that is strictly monotonically decreasing for wavelength values above the center wavelength of the transfer function. Received upstream data is derived from the first filtered signal. An optical signal power level is derived from the second filtered signal an optical signal power level. Finally, it is indicated to an optical network unit a desired direction of wavelength shift in dependence on the derived signal power level.
摘要翻译：提议是接收的WDM光信号在上行光接入网络上的方法。的WDM信号是使用第一光滤波器得到的第一滤波信号滤波。所述第一滤光器具有一个平顶形通带传递函数。进一步的WDM信号是利用第二光学滤波器产生第二滤波信号滤波。所述第二滤光器具有一个通带的传递函数没有为传递函数的中心波长以下的波长值是严格单调递增并没有为波长值的传递函数的中心波长以上是严格单调递减。接收到的上行数据被从所述第一滤波的信号导出的。的光信号功率电平从所述第二滤波信号以光信号功率电平的。最后，它是在光网络单元中指示的所导出的信号功率电平的依赖性的波长偏移的所希望的方向。

7. 发明公开

EP2347529A4 COMMUNICATION SYSTEM COMPRISING A TUNABLE LASER 审中-公开
标题翻译：通信系统可调谐激光器
公开(公告)号：EP2347529A4
公开(公告)日：2014-01-29
申请号：EP09823898
申请日：2009-10-13
申请人： SYNTUNE AB
发明人： SARLET GERT , RIGOLE PIERRE-JEAN
IPC分类号： H04B10/079 , H04B10/2575 , H04B10/272 , H04J14/02
CPC分类号： H04B10/07957 , H04B10/272 , H04J14/0234 , H04J14/0236 , H04J14/0246 , H04J14/025 , H04J14/0256 , H04J14/0282 , H04J14/0283
摘要： A communication system includes a communication unit with a first part and a number of a second part, where the second part is arranged to be placed at the location of an end user, and where the first part is common for a number of second parts. The first part and the second part respectively include a laser, and each second part is connected with the first part by a fiber optic cable and a frequency filter, the first part and the relevant second part being arranged to exchange information by laser light. Each second part includes a tunable laser, the first part is arranged to analyze light received from a second part, and to transmit information to the second part while the first part is receiving light from the second part, and the information contains information for the second part that it should adjust, where required, its frequency or wavelength, and the second part thus is arranged to change its frequency or wavelength.

8. 发明授权

EP1685663B1 FLASH OPTICAL PERFORMANCE MONITOR 有权
标题翻译：光学FLASH性能监控
公开(公告)号：EP1685663B1
公开(公告)日：2013-10-16
申请号：EP03778204.2
申请日：2003-12-01
申请人： Measurement Microsystems A-Z Inc.
发明人： BARWICZ, Andrzej , MORAWSKI, Roman , LESUEUR, Sebastien , MIEKINA, Andrzej , OLESCZAK, Tomasz
IPC分类号： H04B10/079
CPC分类号： H04B10/07953 , H04B10/07957
摘要： A flash optical performance monitor for monitoring DWDM channels is disclosed. The monitor is to assess the spectral quality of an optical signal received and to determine from changes in the spectral quality, relative to a known spectral quality indicative of an acceptable signal, an estimate of signal quality. The flash optical performance monitor comprises a spectroemetric transducer for performing a spectral decomposition of the optical signal received, and for transforming the decomposed optical signal into electrical-domain data, a memory for storing advanced digital signal processing routines, and a processor in connection with the wavelength optical unit and with the memory. The processor receives the advanced digital signal processing routines and the electrical spectral data, and applies the advanced digital signal processing routines to the electrical spectral data. Also a method for monitoring a quality of data transmission of at least one optical channel is disclosed. The method comprises the steps of capturing a spectrum of an optical signal transmitted on the at least one optical channel at an instance in time, providing a spectrum of a time-domain signal, performing an analysis of the spectrum to determine a quality of the optical signal, and from the quality of the optical signal-a quality of data transmission.

9. 发明公开

EP1811693A4 OPTICAL TRANSMITTER AND OPTICAL COMMUNICATION SYSTEM 有权
标题翻译：光发射机和光通信系统
公开(公告)号：EP1811693A4
公开(公告)日：2009-01-07
申请号：EP04822365
申请日：2004-11-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： ABE JUN ICHI , SHIMIZU KATSUHIRO
IPC分类号： H04B10/516 , G02F1/015 , H01S3/10 , H04B10/07 , H04B10/293 , H04B10/564 , H04B10/572 , H04B10/61 , H04J14/00 , H04J14/02
CPC分类号： H04B10/50575 , G02F1/0123 , H04B10/07957 , H04B10/505 , H04B10/5057 , H04B10/50572 , H04B10/50593 , H04B10/50595 , H04B10/572
摘要： An optical transmitter and an optical communication system comprising it imparted with a wavelength independent function. The optical communication system comprises an optical modulator (11), a photocoupler (12) for branching the optical output signal from the optical modulator, a cross-point monitor means (13) for receiving one optical signal branched by the photocoupler and monitoring the cross-point of the optical output signal from the optical modulator, a reference value setting means (14) for setting such a bias reference value to be imparted to the optical modulator as the cross-point becomes constant based on the output signal from the cross-point monitor means, and a bias circuit (15) for applying a predetermined bias to the optical modulator based on the bias reference value outputted from the reference value setting means.

10. 发明授权

EP1536258B1 Optical transmission system, optical multiplexing transmission system, and related peripheral techniques 失效
标题翻译：一种光传输系统，光多路复用传输系统和相关方法
公开(公告)号：EP1536258B1
公开(公告)日：2007-12-12
申请号：EP05003242.4
申请日：1995-08-02
申请人： FUJITSU LIMITED
发明人： Ishikawa, George , Nishimoto, Hiroshi , Ooi, Hiroki , Sekiya, Motoyoshi , Tomofuji, Hiroaki
IPC分类号： H04J14/08 , H04B10/155 , H04B10/158 , H04Q11/04 , H04B10/16 , H04B10/17 , H04L7/00
CPC分类号： H04B10/25133 , G02F2203/21 , H04B10/0795 , H04B10/07957 , H04B10/0797 , H04B10/0799 , H04B10/25137 , H04B10/2525 , H04B10/255 , H04B10/2563 , H04B10/66 , H04B10/67 , H04B10/675 , H04B2210/252 , H04B2210/254 , H04J14/02 , H04J14/0298 , H04J14/08 , H04J14/086 , H04L7/0037 , H04L7/0075 , H04L7/027 , H04L7/06 , H04Q11/0001
摘要： The invention provides a technique for optimizing transmission conditions to achieve large-capacity transmission, and also provides peripheral techniques for the practical implementation of optical multiplexing that makes large-capacity transmission possible. A transmission characteristic is measured in a transmission characteristic measuring section (53), and control of signal light wavelength in a tunable light source (44), control of the amount of prechirping, control of the amount of dispersion compensation, and/or control of optical power are performed to achieve the best transmission characteristic. Wavelength dispersion is deliberately introduced by a dispersion compensator, to reduce nonlinear effects. A tunable laser is used to optimize signal light wavelength for each optical amplification repeater section. Peripheral techniques, such as drift compensation, clock extraction, optical signal channel identification, clock phase stabilization, etc., are provided for the implementation of optical multiplexing.

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