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1. 发明申请

WO2022228655A1 AN OPTICAL TRANSCEIVER ASSEMBLY, AN OPTICAL TRANSCEIVER AND AN ADAPTOR FOR AN OPTICAL TRANSCEIVER 审中-公开
公开(公告)号：WO2022228655A1
公开(公告)日：2022-11-03
申请号：PCT/EP2021/060863
申请日：2021-04-26
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： DEHO, Alberto , MAGRI, Roberto , D'INCÀ, Claudio , MOSTI, Sergio
IPC分类号： G02B6/38 , G02B6/42
摘要： An optical transceiver assembly is provided. The optical transceiver assembly comprises: an optical transceiver, wherein the optical transceiver comprises: an optical transmitter comprising an active region of a cavity laser for transmitting optical signals over a first channel of the optical transceiver; an optical receiver for receiving optical signals over a second channel of the optical transceiver; and an adaptor. The adaptor comprises: a first terminal, the first terminal for coupling to one of the first channel and the second channel of the optical transceiver; a second terminal, the second terminal for coupling to the other of the first channel and the second channel of the optical transceiver; a third terminal defining a bidirectional optical channel of the adaptor; and one or more optical components configured to optically couple the first and second terminals to the third terminal, such that optical signals at a first wavelength pass between the first terminal and the third terminal, and optical signals at a second wavelength, different from the first wavelength, pass between the second terminal and the third terminal. The active region and one or more of the optical components of the adaptor are together configured to form the cavity laser for transmitting optical signals over the first channel. Optical signals may be received by the optical transceiver over the second channel. The adaptor may be couplable to the optical transceiver in a first configuration, in which the first terminal of the adaptor is coupled to the first channel and the second terminal of the adaptor is coupled to the second channel, and a second configuration, in which the second terminal of the adaptor is optically coupled to the first channel and the first terminal of the adaptor is optically coupled to the second channel. An optical transceiver and an adaptor for an optical transceiver are also provided.

2. 发明申请

WO2022073605A1 DETERMINING GAINS FOR AMPLIFIERS IN AN OPTICAL NETWORK 审中-公开
公开(公告)号：WO2022073605A1
公开(公告)日：2022-04-14
申请号：PCT/EP2020/078138
申请日：2020-10-07
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： MAGRI, Roberto , CECCATELLI, Riccardo
IPC分类号： H04B10/079 , H04B10/293 , H04J14/02
摘要： In a first aspect, a method performed by a management node for an optical network is provided. The optical network comprising a plurality of receivers and a plurality of amplifiers. The method comprises measurements of received power for the signals received at the receivers and target received power values for the receivers. The method further comprises inputting the received power measurements and target received power values into an optimisation process to determine gain values to be applied by the amplifiers on signals sent to the receivers. The method further comprises outputting the gain values for implementation at the amplifiers.

3. 发明申请

WO2021032292A1 FAULT CLASSIFICATION 审中-公开
公开(公告)号：WO2021032292A1
公开(公告)日：2021-02-25
申请号：PCT/EP2019/072303
申请日：2019-08-20
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： MAGRI, Roberto , DEBENEDETTI, Paolo , ORSI, Stefano , MORCHIO, Marcello
IPC分类号： H04B10/079
摘要： A method of identifying a fault in an optical link comprises continually storing samples of a signal that represents a power of an optical signal received over the optical link. When a fault is detected on said optical link, at least one stored series of samples of the signal is retrieved. The method then comprises performing a classification on the retrieved series of samples, in order to classify the series of samples as resulting from one of a plurality of predefined faults.

4. 发明申请

WO2018024323A1 METHODS OF BI-DIRECTIONAL OPTICAL COMMUNICATION AND OPTICAL TRANSCEIVER 审中-公开
标题翻译：双向光通信和光收发器的方法
公开(公告)号：WO2018024323A1
公开(公告)日：2018-02-08
申请号：PCT/EP2016/068459
申请日：2016-08-02
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： BRUNO, Gianmarco , CAMERA, Marco , MAGRI, Roberto
IPC分类号： H04B10/516 , H04B10/556 , H04J14/02
CPC分类号： H04B10/2503 , H04B10/40 , H04B10/5165 , H04B10/556 , H04B10/61
摘要： A method (10) of bi-directional optical communication, the method comprising: generating (12) a first optical communication signal for transmission in one direction through an optical fibre, generating the first optical communication signal comprising: receiving information for transmission and generating (14) a baseband signal comprising a representation of the information; performing digital upconversion (16) of the baseband signal to form an upconverted baseband signal; performing optical modulation (18) of an optical carrier signal with the upconverted baseband signal; and restricting an optical spectrum of the first optical communication signal to a first portion of an optical channel frequency slot by performing one of digital filtering (16) in addition to digital upconversion and optical filtering (36) after optical modulation; and receiving (20) a second optical communication signal transmitted in an opposite direction through the optical fibre, the second optical communication signal having an optical spectrum occupying a second portion of the optical channel frequency slot, separate to the first portion.
摘要翻译：一种双向光通信的方法（10），该方法包括：产生（12）第一光通信信号，用于通过光纤在一个方向上传输，产生第一光通信信号，该第一光通信信号包括：接收用于传输的信息并生成（14）包括所述信息的表示的基带信号; 执行所述基带信号的数字上变频（16）以形成上变频的基带信号; 利用上变频的基带信号执行光载波信号的光调制（18）以及在光调制之后，除了数字上变频和光滤波（36）之外，还通过执行数字滤波（16）之一，将第一光通信信号的光谱限制到光信道频隙的第一部分; 以及接收（20）通过光纤在相反方向上发送的第二光通信信号，所述第二光通信信号具有占据所述光信道频隙的第二部分的光谱，与所述第一部分分离。

5. 发明申请

WO2010045981A1 OPTICAL NETWORK AMPLIFIER NODE AND METHOD OF CHANNEL POWER DEPLETION COMPENSATION 审中-公开
标题翻译：光网络放大器节点和信道功率分配补偿方法
公开(公告)号：WO2010045981A1
公开(公告)日：2010-04-29
申请号：PCT/EP2008/064395
申请日：2008-10-23
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , MAGRI, Roberto , BRUNO, Gianmarco
发明人： MAGRI, Roberto , BRUNO, Gianmarco
IPC分类号： H01S3/067 , H01S3/30 , H04B10/17 , H01S3/10 , H01S3/23
CPC分类号： H01S3/06758 , H01S3/10015 , H01S3/10069 , H01S3/1608 , H01S3/2375 , H01S3/302 , H01S2301/02 , H01S2301/04 , H04B10/2942
摘要： A method (10) of compensating for channel power depletion induced by Raman amplification noise in a hybrid distributed Raman amplifier-Erbium doped fibre amplifier. In the method, an equivalent noise figure is determined (12) for a virtual amplifier equivalent to the hybrid distributed Raman amplifier-Erbium doped fibre amplifier, and having an input power equal to the input power of the Erbium doped fibre amplifier when the distributed Raman amplifier is off and an output power equal to the Erbium doped fibre amplifier output power. A compensation power, dependent at least in part upon the equivalent noise figure, is determined (14). A control signal is provided (16) for controlling the hybrid amplifier such that an optical signal amplified by the hybrid amplifier has a total output power equal to a predetermined nominal output power plus the compensation power.
摘要翻译：一种在混合分布式拉曼放大器 - 掺铒光纤放大器中补偿由拉曼放大噪声引起的信道功率耗散的方法（10）。在该方法中，对于等效于混合分布式拉曼放大器 - 掺铒光纤放大器的虚拟放大器确定等效噪声系数（12），并且当分布的拉曼具有与铒掺杂光纤放大器的输入功率相等的输入功率时，放大器关闭，输出功率等于掺铒光纤放大器输出功率。确定至少部分依赖于等效噪声系数的补偿功率（14）。提供控制信号（16），用于控制混合放大器，使得由混合放大器放大的光信号具有等于预定标称输出功率加上补偿功率的总输出功率。

6. 发明申请

WO2023001387A1 OPTICAL FILTER ARCHITECTURE 审中-公开
公开(公告)号：WO2023001387A1
公开(公告)日：2023-01-26
申请号：PCT/EP2021/070726
申请日：2021-07-23
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： MOSTI, Sergio , DEHO, Alberto , MAGRI, Roberto , D'INCÀ, Claudio
IPC分类号： H04B10/27 , H04B10/516
摘要： There is provided an optical filter module (210) comprising a photodetector (211), a transmitting-side tunable optical filter (212), and processing circuitry (213). The photodetector (211) is configured to receive a low speed overlay signal from a transceiver (220) of a fixed wavelength, and wherein the processing circuitry (213) is configured to decode information relating to the fixed wavelength from the low speed overlay signal and set the transmitting-side tunable optical filter (212) at the fixed wavelength.

7. 发明申请

WO2022184249A1 OPTICAL AMPLIFIER APPARATUS AND METHOD 审中-公开
公开(公告)号：WO2022184249A1
公开(公告)日：2022-09-09
申请号：PCT/EP2021/055321
申请日：2021-03-03
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： MAGRI, Roberto , DEHO, Alberto
IPC分类号： H04B10/077 , H04B10/29 , H04J14/02
摘要： Optical amplifier apparatus (100) comprising: an input (102) for an incoming optical signal (IN) comprising an optical supervisory channel, OSC, signal and service channel signals at channel wavelengths of a WDM channel wavelength grid; an output (112) for an outgoing optical signal (OUT); an optical amplifier, OA, (106) having an operating bandwidth including the WDM channel wavelength grid; a first optical drop filter (104) configured to drop from an IN signal an out-of-band, OOB, OSC signal at a wavelength outside the OA operating bandwidth; a second optical drop filter (108, 208) configured to drop from an IN signal an in-band, IB, OSC signal at a wavelength within the OA operating bandwidth; an OSC signal output (114) configured to output the dropped OSC signal; an OSC signal input (116) configured to receive an outgoing OOB OSC or IB OSC signal; and an optical add filter (110, 210) configured to add an outgoing OOB OSC or IB OSC signal to service channel signals at channel wavelengths of the WDM channel wavelength grid to form the OUT signal.

8. 发明申请

WO2022128111A1 OPTICAL ATTENUATOR 审中-公开
公开(公告)号：WO2022128111A1
公开(公告)日：2022-06-23
申请号：PCT/EP2020/086837
申请日：2020-12-17
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： CAVALIERE, Fabio , DEBENEDETTI, Paolo , MAGRI, Roberto
IPC分类号： H04B10/80 , G02F1/365 , G02F1/15 , H04B10/00 , H04B10/293 , G02F1/1335
摘要： Optical attenuators comprising electrochromic devices for telecommunications networks are provided. The optical attenuators are configured to reflect or refract an input optical signal using an electrochromic device, wherein the electrochromic device is configured to provide adjustable optical reflection or refraction levels.

9. 发明申请

WO2021249639A1 FAULT LOCATION IN AN OPTICAL RING NETWORK 审中-公开
公开(公告)号：WO2021249639A1
公开(公告)日：2021-12-16
申请号：PCT/EP2020/066142
申请日：2020-06-10
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： CECCATELLI, Riccardo , AGOSTINI, Giacomo , MAGRI, Roberto , PARODI, Stefano , RISSO, Luca , VALERI, Marina
IPC分类号： H04B10/079 , H04B10/0791 , H04B10/0793 , H04B10/07953 , H04B10/07955
摘要： Embodiments described herein relate to methods and apparatus for determining a fault location in an optical ring network. There is provided a method of determining a fault location in an optical ring network (100) having a number of nodes (110A, 110B, 110C). The method comprises monitoring a parameter (205) of a traffic signal (170D, 170U) associated with each node of the optical ring network (305), and in response to receiving an indication of a fault event (215, 220, 310), comparing a value of the parameter of each node before and after the fault event to determine the fault location (315, 325, 335, 340).

10. 发明申请

WO2019233543A1 OPTICAL DEVICE AND HUB NODE FOR AN OPTICAL NETWORK 审中-公开
公开(公告)号：WO2019233543A1
公开(公告)日：2019-12-12
申请号：PCT/EP2018/064612
申请日：2018-06-04
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： MAGRI, Roberto , DEBENEDETTI, Paolo , CECCATELLI, Riccardo
IPC分类号： H04J14/02
摘要： An optical device (100) for an optical network, comprising an optical input (110), a passive optical component (112), a memory device (114) for storing information relating to the passive optical component. The optical device further comprises an optical splitter (116) configured to power split off a portion of received optical signals to form split optical signals and to output the remaining optical power of received optical signals to the passive optical component and a photodetector (118) configured to receive the split optical signals and to generate a corresponding photodetector output signal. Further the optical device comprises an accumulator (120) configured to be charged by the photodetector output signal, a laser (122) configured to be powered by the accumulator and a controller (124) configured to, in response to a trigger from the photodetector, read said information from the memory device and to cause the laser to transmit an optical signal from an optical output (110), the optical signal carrying a message based on said information read from the memory device.

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