公开(公告)号：US11652544B2

公开(公告)日：2023-05-16

申请号：US17164927

申请日：2021-02-02

申请人： ADVA Optical Networking SE

发明人： Michael Eiselt ,  Mirko Lawin ,  Florian Azendorf

IPC分类号： H04B10/071 ,  H04B10/50

CPC分类号： H04B10/071 ,  H04B10/50

摘要： The present disclosure relates to an optical time domain reflectometry method including the steps of feeding a plurality of unipolar optical probe signals to a near end of an optical path under test, receiving a corresponding plurality of reflected unipolar optical receive signals, creating a corresponding plurality of digital receive data signals, calculating at least one correlation signal by correlating the digital receive data signals with a bit sequence corresponding to a respective probe bit sequence, and determining the signal propagation delay between the near end of the optical path and a respective reflective position. The present disclosure also relates to an optical time domain reflectometry system in which this method is implemented and a computer program having instructions to cause the optical time domain reflectometer and to execute the method herein.

公开(公告)号：US10432306B2

公开(公告)日：2019-10-01

申请号：US15965815

申请日：2018-04-27

申请人： ADVA Optical Networking SE

发明人： Michael Eiselt

IPC分类号： H04B10/079 ,  G01M11/00 ,  H04B10/071 ,  H04B10/25 ,  H04J14/02

摘要： An optical time-domain reflectometer, OTDR, apparatus is configured to measure a backscattered trace of a fiber link under test (FLUT). The OTDR apparatus includes at least one photo diode adapted to detect an optical signal reflected from points along the fiber link under test in response to an optical test signal generated by a laser of the OTDR apparatus and supplied to the fiber link under test. The reflected optical test signal is attenuated or amplified automatically such that the power of the optical signal received by the photodiode is limited to a predetermined power range.

公开(公告)号：US20150318930A1

公开(公告)日：2015-11-05

申请号：US14704046

申请日：2015-05-05

申请人： ADVA Optical Networking SE

发明人： Klaus Grobe ,  Michael Eiselt

IPC分类号： H04B10/572 ,  H04J14/02 ,  H04B17/11

CPC分类号： H04B10/506 ,  H04B10/572 ,  H04B17/11 ,  H04J14/02

摘要： A method for tuning a tunable optical transmitter to a target wavelength includes applying at least one tuning signal to the tunable optical transmitter to control the tunable optical transmitter to create an optical calibration signal according to nominal tuning information for the tunable optical transmitter. The optical calibration signal has a wavelength lying within a secure wavelength range, and the nominal tuning information is based on a nominal wavelength dependency for the tunable optical transmitter. The method also includes measuring a deviation between an actual wavelength dependency of the tunable optical transmitter and the nominal wavelength dependency, and determining calibration information based on that deviation. The calibration information is applied to determine a corrected nominal wavelength dependency from which target tuning information is determined. The tunable optical transmitter is controlled to create an optical channel signal according to the target tuning information.

摘要翻译： 用于将可调光发射机调谐到目标波长的方法包括将至少一个调谐信号施加到可调谐光发射机，以根据可调谐光发射机的标称调谐信息来控制可调光发射机产生光学校准信号。 光学校准信号具有位于安全波长范围内的波长，标称调谐信息基于可调光发射机的标称波长依赖性。 该方法还包括测量可调光发射机的实际波长依赖性与标称波长依赖性之间的偏差，以及基于该偏差来确定校准信息。 应用校准信息来确定确定目标调谐信息的校正的标称波长依赖性。 根据目标调谐信息，控制可调光发射机产生光通道信号。

公开(公告)号：US20140247840A1

公开(公告)日：2014-09-04

申请号：US14190887

申请日：2014-02-26

申请人： ADVA Optical Networking SE

发明人： Michael Eiselt ,  Jörg-Peter Elbers

IPC分类号： H04J14/02 ,  H04B10/2575

CPC分类号： H04J14/0227 ,  H04B10/0779 ,  H04B10/2575 ,  H04B2210/074 ,  H04J14/0258 ,  H04J14/0276 ,  H04J14/0279

摘要： The invention relates to an optical WDM transmission system including a plurality of first optical transceivers (11) at a first end (7) of an optical WDM transmission link (5, 5′), each of the first optical transceivers (11) including a tunable optical transmitter (17) being adapted to create a first digital optical channel signal (S1ch,i) within the bandwidths of a set of first optical channels of the optical WDM transmission system (1, 1′) according to a tuning control information, multiplexing means (13) for multiplexing the first digital optical channel signals (S1ch,i) into a first optical WDM signal (S1WDM), which is supplied to the first end (7) of the optical WDM transmission link (5, 5′), a plurality of second optical transceivers at a second end (9) of the optical WDM transmission link, each of the second optical transceivers including an optical transmitter being adapted to create a second digital optical channel signal (S2ch,i) within the bandwidth of a predetermined optical channel of a second set of optical channels of the optical WDM transmission system (1, 1′), multiplexing means for multiplexing the second digital optical channel signals into a second optical WDM signal (S2WDM), which is supplied to the second end (9) of the optical WDM transmission link (1, 1′), demultiplexing means (15) for demultiplexing the second optical WDM signal (S2WDM) into the second digital optical channel signals (S2ch,i) and providing each of the second digital optical channel signals (S2ch,i) to a dedicated first optical transceiver (11), and a central tuning device (3, 3′) adapted to create the tuning control information for one or more selected or all of the first optical transceivers (11) by tapping off an optical WDM detection signal (SWDM) from the first optical WDM signal (S1WDM), extracting tuning status information from the optical WDM detection signal (Sdet,WDM) and determining tuning control information for at least one of the first transceivers (11), the central tuning device (3, 3′) being further adapted to supply the tuning control information to the at least one first transceiver (11) by modulating the second optical WDM signal (S2WDM) according to the tuning control information applying an amplitude modulation of the second optical WDM signal (S2WDM) using a dedicated WDM tone frequency.

公开(公告)号：US10784958B2

公开(公告)日：2020-09-22

申请号：US16433079

申请日：2019-06-06

申请人： ADVA OPTICAL NETWORKING SE

发明人： Michael Eiselt

IPC分类号： H04B10/071 ,  H04B10/25 ,  H04L1/00 ,  H04L7/00

摘要： The invention relates to a method of determining a time-of-flight of an optical signal between a starting point and a reflection point of an optical path, comprising: supplying to the path at least one optical probing signal; detecting an electrical return signal according to an optical return signal returning from the path in response to a corresponding one of the probing signals using direct detection; deriving at least one receive code sequence by sampling and slicing the return signal using a sampling rate corresponding to a bit rate of a sequence of pulses of the probing signal; determining a correlation function by correlating the transmit code sequence and the at least one receive code sequence; and identifying a main peak of the correlation function that corresponds to the reflection point and a time position of the peak, and determining the time-of-flight as the time position of the peak.

公开(公告)号：US09231724B2

公开(公告)日：2016-01-05

申请号：US13828130

申请日：2013-03-14

申请人： ADVA Optical Networking SE

发明人： Stephan Pachnicke ,  Michael Eiselt ,  Markus Roppelt ,  Mirko Lawin ,  Klaus Grobe ,  Jörg-Peter Elbers

IPC分类号： H04J14/00 ,  H04J14/02

CPC分类号： H04J14/0227 ,  H04J14/0276

摘要： An optical transmission system method including generating for a tunable laser a pilot tone having an adjustable pilot tone frequency identifying a wavelength division multiplexing channel used by the tunable laser; multiplying the pilot tone with pilot tone data to provide a pilot tone data signal; supplying the pilot tone data signal and a high frequency data signal to the tunable laser generating an optical laser signal output by the tunable laser responsive to the supplied signals; transporting the optical laser signal to a central wavelength to locker; converting the received optical laser signal to provide a pilot tone data signal for wavelength division multiplexing channels demodulated to detect the pilot tone and the pilot tone data for each individual wavelength division multiplexing channel; and identifying the wavelength division multiplexing channel on the basis of the pilot tone frequency of the detected pilot tone and evaluating the pilot tone data.

摘要翻译： 一种光传输系统方法，包括为可调谐激光器生成具有标识可调谐激光器使用的波分复用信道的可调导频音频率的导频音; 将导频音与导频音数据相乘以提供导频音数据信号; 向所述可调谐激光器提供导频音数据信号和高频数据信号，以响应于所提供的信号产生由可调谐激光器输出的光学激光信号; 将光学激光信号传输到中心波长至储物柜; 转换所接收的光学激光信号以提供用于波分多路复用通道的导频音数据信号，所述导频音数据信号被解调以检测每个单独的波分复用通道的导频音和导频音数据; 以及基于检测到的导频音调的导频音频率识别波分复用信道，并评估导频音数据。

公开(公告)号：US09219523B2

公开(公告)日：2015-12-22

申请号：US14081756

申请日：2013-11-15

申请人： ADVA Optical Networking SE

发明人： Michael Eiselt ,  Stephan Pachnicke

IPC分类号： H04B3/32 ,  H04J14/02 ,  H04J14/06

CPC分类号： H04B3/32 ,  H04J14/02 ,  H04J14/0208 ,  H04J14/06

摘要： Arrangement for transmitting an optical digital WDM signal over an optical transmission link or a passive optical network, the signal (SWDM) including N optical channels matching a given optical frequency grid. The scheme includes supplying the WDM signal (SWDM) to a near end of the optical transmission link or a near end of the passive optical network; receiving the WDM signal (SWDM) at a far end of the optical transmission link or at one or more far ends of the passive optical network; separating the optical channel signals (si(t)) by splitting and bandpass filtering the WDM signal (SWDM) received; and converting the optical channel signals (si(t)) into electrical channel signals using direct optical detection. The signal (SWDM) is created such that neighboring channel signals (si(t)) are orthogonally polarized and are conditioned with specific pre-distortion.

摘要翻译： 用于通过光传输链路或无源光网络发送光数字WDM信号的装置，所述信号（SWDM）包括与给定光频网格匹配的N个光信道。 该方案包括将WDM信号（SWDM）提供给光传输链路的近端或无源光网络的近端; 在所述光传输链路的远端处或在所述无源光网络的一个或多个远端处接收所述WDM信号（SWDM）; 通过对所接收的WDM信号（SWDM）进行分频和带通滤波来分离光信道信号（si（t））; 以及使用直接光学检测将光信道信号（si（t））转换成电信道信号。 创建信号（SWDM），使得相邻信道信号（si（t））被正交极化并且用特定的预失真来调节。

公开(公告)号：US20150030334A1

公开(公告)日：2015-01-29

申请号：US14329119

申请日：2014-07-11

申请人： ADVA OPTICAL NETWORKING SE

发明人： Michael Eiselt ,  Klaus Grobe ,  Jörg-Peter Elbers ,  Helmut Griesser

IPC分类号： H04B10/2575 ,  H04B10/25 ,  H04J14/02

CPC分类号： H04B10/2575 ,  H04B10/2503 ,  H04B10/5167 ,  H04J14/02 ,  H04J14/025 ,  H04J14/0282 ,  H04J2014/0253

摘要： A method for bi-directionally transmitting digital optical signals over an optical transmission link in which a first optical transmit signal is created according to a first binary digital signal in such a way that the bit information of the first binary digital signal is included in first sections of the symbol interval of the first optical transmit signal. A second optical transmit signal is created by creating an optical wavelength reuse signal using the first optical transmit signal received at the second end of the optical transmission link, the optical wavelength reuse signal being modulated according to a second digital signal in such a way that the bit information of the second digital signal is included in second sections of the symbol interval of the first optical transmit signal received.

摘要翻译： 一种用于通过光传输链路双向传输数字光信号的方法，其中根据第一二进制数字信号产生第一光发射信号，使得第一二进制数字信号的比特信息包括在第一部分中 的第一光发射信号的符号间隔。 通过使用在光传输链路的第二端接收的第一光发射信号创建光波长重用信号来创建第二光发射信号，光波长重用信号根据第二数字信号被调制，使得 第二数字信号的位信息被包括在接收的第一光发送信号的符号间隔的第二部分中。

公开(公告)号：US11852512B2

公开(公告)日：2023-12-26

申请号：US17683522

申请日：2022-03-01

申请人： ADVA Optical Networking SE

发明人： Michael Eiselt

IPC分类号： G01D5/353 ,  G01K11/32

CPC分类号： G01D5/35329 ,  G01K11/32

摘要： In a method for interrogating at least one optical sensor coupled to an optical path, at least two time-shifted optical signals are fed into the optical path and reflected optical signals of the at least two probe signals created by the at least one optical sensor are detected. Each detected reflected optical signal is assigned to one of the at least one optical sensor and a correct optical frequency is assigned to each detected reflected optical signal. An absolute value or a value range or a change of a value or value range of the parameter to be sensed is determined from the one or more of the following physical conditions: the optical reflection signals, the reflectivity of the at least one optical sensor, and the frequency of each detected optical reflection signal, or from one or more dependencies that link these physical conditions.

公开(公告)号：US20220283000A1

公开(公告)日：2022-09-08

申请号：US17683522

申请日：2022-03-01

申请人： ADVA Optical Networking SE

发明人： Michael Eiselt

IPC分类号： G01D5/353 ,  G01K11/32

摘要： The invention relates to a method for interrogating at least one optical sensor that is provided within or connected to an optical path at a sensor position, the optical path connecting the optical sensor to a near end of the optical path. The at least one optical sensor has a known frequency-dependent course of its reflectivity that is changed by a physical parameter to be sensed, especially the temperature or humidity of the environment surrounding the at least one optical sensor or the pressure being exerted onto the at least one optical sensor. The method includes the steps of: feeding at least two optical probe signals having differing optical center frequencies to the near end of the optical path, where the at least two optical probe signals are time-shifted versus each other in a predetermined manner when being fed to the near end of the optical path, or where a predetermined time shift between the at least two optical probe signals or corresponding optical reflection signals is introduced within the optical path or within an optical receiver using a chromatic dispersion generating component; detecting reflected optical power portions of the at least two probe signals (optical reflection signals) created by the at least one optical sensor depending on its frequency-dependent course of the reflectivity and the optical frequencies of the at least two optical probe signals, assigning each optical reflection signal detected to one of the at least one optical sensor and assigning the correct optical frequency to each optical reflection signal detected using a known round-trip delay of the at least two optical probe signals between the near end and the respective sensor position and/or using the time shift relation between the at least two optical probe signals; and determining an absolute value or a value range or a change of a value or value range of the parameter to be sensed from the presence of one or more of the optical reflection signals or the maximum optical power or the optical energy thereof, from the frequency-dependent course of the reflectivity of the at least one optical sensor and its dependency on the parameter to be sensed, and from the optical frequency of each of the optical reflection signals detected or from one or more dependencies that link these physical conditions.