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21. 发明公开

EP2661827A1 APPARATUS AND METHOD FOR GENERATING INTERLEAVED RETURN-TO-ZERO (IRZ) POLARIZATION-DIVISION MULTIPLEXED (PDM) SIGNALS 有权转让
标题翻译： DEVICE AND的生成方法嵌套RETURN-TO-ZERO和偏振插值MULTIPLEX SIGNALS
公开(公告)号：EP2661827A1
公开(公告)日：2013-11-13
申请号：EP12701196.3
申请日：2012-01-05
申请人： Alcatel Lucent
发明人： LIU, Xiang , SETHUMADHAVAN, Chandrasekhar
IPC分类号： H04B10/155
CPC分类号： H04B10/532 , H04B10/5053 , H04B10/5055 , H04B10/508 , H04B10/5162 , H04B10/5561
摘要： Return To Zero (RZ) shaping is performed for a first I/Q modulator whose output corresponds to a first polarization component using a first two digital-to-analog converters (DACs), each of which is sampled at approximately twice a modulation symbol rate or more and has an output with a first interleaving order that interleaves one of a first pair of intended drive signal patterns and zeros. RZ shaping is also performed for a second I/Q modulator whose output corresponds to a second polarization component using a second two DACs, each sampled at approximately twice the modulation symbol rate or more and having a second interleaving order that interleaves zeros and one of a second pair of intended drive signal patterns, the second interleaving order opposite the first interleaving order. The first polarization and the second polarization may be combined, thereby forming an Interleaved Return To Zero (IRZ) Polarization Division Multiplexed (PDM) signal.

22. 发明授权

EP2175574B1 Transmission system comprising a CS-RZ DPSK optical transmitter 有权
标题翻译：用CS-RZ DPSK光发射机的光传输系统
公开(公告)号：EP2175574B1
公开(公告)日：2012-12-12
申请号：EP10152077.3
申请日：2002-06-28
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Miyamoto, Yutaka , Hirano, Akira , Kuwahara, Shoichiro , Tomizawa, Masahito
IPC分类号： H04B10/155 , H04B10/158 , H04J14/02
CPC分类号： H04B10/5561 , H04B10/5051 , H04B10/5055 , H04B10/516 , H04B10/5162 , H04B10/677 , H04B2210/517 , H04J14/0227 , H04J14/0246 , H04J14/0279

23. 发明授权

EP1851882B1 SYSTEM AND METHOD FOR GENERATING OPTICAL RETURN-TO-ZERO SIGNALS WITH DIFFERENTIAL BI-PHASE SHIFT 有权
标题翻译：系统和方法生产光学返回到零的信号，差分BIPHASENVERSCHIEBUNG
公开(公告)号：EP1851882B1
公开(公告)日：2012-07-11
申请号：EP06705681.2
申请日：2006-02-23
申请人： Huawei Technologies Co., Ltd.
发明人： BAI, Yusheng
IPC分类号： H04B10/00 , H04J14/02
CPC分类号： H04B10/5162 , H04B10/505 , H04B10/5051 , H04B10/5055 , H04B10/508
摘要： A system and method for generating an optical return-to-zero signal. The system includes an electro-optical conversion system. The electro-optical conversion system is configured to receive an input electrical non-return-to-zero signal, process information associated with the input electrical non-return-to-zero signal, and generate a first electrical signal and a second electrical signal based on at least information associated with the input electrical non-return-to-zero signal. Additionally, the electro-optical conversion system is configured to delay a second electrical signal with respect to the first electrical signal by a predetermined period of time, process information associated with the first electrical signal and the delayed second electrical signal, and generate an output optical return-to-zero signal based on at least information associated with the first electrical signal and the delayed second electrical signal. The output optical return-to-zero signal is an optical differential return-to-zero signal, and the output optical return-to-zero signal is substantially free from any frequency chirp.

24. 发明公开

EP2296298A4 METHOD AND DEVICE FOR GENERATING OPTICAL SIGNAL 审中-公开
标题翻译：方法和一种用于产生光信号的
公开(公告)号：EP2296298A4
公开(公告)日：2012-02-22
申请号：EP09765345
申请日：2009-04-15
申请人： HUAWEI TECH CO LTD
发明人： YU DEZHONG , QI MING
IPC分类号： H04B10/50 , H04B10/516 , H04B10/556
CPC分类号： H04B10/5561 , H04B10/5051 , H04B10/5053 , H04B10/5162 , H04B2210/517

25. 发明公开

EP2247005A2 Optical receiving apparatus and optical communication system comprising it 审中-公开
标题翻译： Optische Empfangsvorrichtung undzugehörigesoptisches Kommunikationssystem
公开(公告)号：EP2247005A2
公开(公告)日：2010-11-03
申请号：EP10153294.3
申请日：2005-12-29
申请人： FUJITSU LIMITED
发明人： Akiyama, Yuichi , Hoshida, Takeshi , Miura, Akira , Kai, Yutaka , Ooi, Hiroki , Rasmussen, Jens C. , Nakamura, Kentaro , Kuwata, Naoki , Nishizawa, Yoshinori , Takahara, Tomoo , Yuki, Masahiro
IPC分类号： H04B10/158
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50595 , H04B10/5162 , H04B10/5165 , H04B10/5561 , H04B10/66 , H04B10/677
摘要： A phase shift unit (12) provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit (20). A low-frequency signal f 0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f 0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode (3). 2f 0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit (12) is controlled by feedback control so that the 2f 0 component becomes the minimum.
摘要翻译：相移单元（12）在经由构成数据调制单元（20）的一对臂发送的一对光信号之间提供规定的相位差（例如，±2）。低频信号f 0叠加在一个光信号上。相位偏离低频信号f 0的信号被叠加在另一个光信号上。一对光信号被耦合，其一部分由光电二极管（3）转换成电信号。提取包含在电信号中的2f 0分量。通过反馈控制来控制提供给相移单元（12）的偏压，使得2f 0分量成为最小。

26. 发明公开

EP2157711A1 OPTICAL TRANSMISSION SYSTEM, APPARATUS AND METHOD 审中-公开
标题翻译：光传输系统，装置和方法
公开(公告)号：EP2157711A1
公开(公告)日：2010-02-24
申请号：EP08861711.3
申请日：2008-12-09
申请人： Huawei Technologies Co., Ltd.
发明人： YANG, Yanfu , XU, Xiaogeng
IPC分类号： H04B10/02
CPC分类号： H04J14/08 , H04B10/505 , H04B10/5162 , H04B10/5561 , H04B10/677
摘要： An optical transmission system, an optical transmitting apparatus, an optical transmitting method, an optical receiving apparatus, and an optical receiving method are provided, which belong to an optical communication field. The system includes a transmitting end apparatus and a receiving end apparatus. The optical transmitting apparatus includes a pre-coding module, a multiplexing module, and a modulating module. The optical receiving apparatus includes a demodulating module and a converting module. The optical transmitting method includes the following steps: performing pre-coding, multiplexing, and modulation for a signal to be transmitted, and then outputting the signal. The optical receiving method includes the following steps: receiving an optical signal of a transmitted signal; demodulating the optical signal according to a preset time delay, where the preset time delay equals to a product of a number of branches multiplexed by a transmitting apparatus and an element period of a signal multiplexed by the transmitting apparatus; converting the demodulated optical signal into an electrical signal; and obtaining information of the transmitted signal according to the electrical signal. Thus, the existing low-speed parts are adopted to realize a high-speed pre-coding function in a high-speed optical transmission system, and an extended time delay is used in the demodulation, thereby reducing the cost and difficulty to realize the system.
摘要翻译：提供属于光通信领域的光传输系统，光发送装置，光发送方法，光接收装置以及光接收方法。该系统包括发送端装置和接收端装置。该光发射装置包括预编码模块，复用模块和调制模块。光接收装置包括解调模块和转换模块。该光发送方法包括以下步骤：对待发送信号进行预编码，复用和调制，然后输出该信号。该光接收方法包括以下步骤：接收发射信号的光信号; 根据预设的时延对所述光信号进行解调，所述预设的时延等于发射装置复用的支路个数与所述发射装置复用的信号的单元周期的乘积; 将解调的光信号转换成电信号; 并根据该电信号获取传输信号的信息。因此，采用现有的低速部件来实现高速光传输系统中的高速预编码功能，并且在解调中使用延长的时间延迟，从而降低了实现系统的成本和难度。

27. 发明公开

EP2008135A2 VERSATILE COMPACT TRANSMITTER FOR GENERATION OF ADVANCED MODULATION FORMATS 审中-公开
标题翻译：通用紧凑站进行创建高级调制格式
公开(公告)号：EP2008135A2
公开(公告)日：2008-12-31
申请号：EP07755109.1
申请日：2007-04-06
申请人： Finisar Corporation
发明人： MAHGEREFTEH, Daniel , ZHENG, Xueyan , MATSUI, Yasuhiro , TAYEBATI, Parviz
IPC分类号： G02B6/28
CPC分类号： H04B10/5162 , H04B10/516 , H04B10/556 , H04B10/5561 , H04B2210/517
摘要： A system for generating a return-to-zero differentially-phase-shift-keyed (RZ-DPSK) optical signal comprising: a driver comprising an N-level digital multilevel transformer (N-level digital transformer) configured to receive a two level digital electrical signal representing 1s and Os and output a N-level electrical signal, wherein N > 2; an FM source configured to receive the N-level electrical signal output by the driver and generate an optical frequency modulated signal (FM/AM source); and an optical spectrum reshaper (OSR) configured to receive the optical frequency modulated signal output by the FM source and generate the desired RZ-DPSK optical signal. A method for generating a retum-to-zero differentially-phase-shift-keyed (RZ-DPSK) optical signal, the method comprising: (1) receiving a two level digital electrical signal representing 1s and Os and outputting a N-level electrical signal, wherein N > 2; (2) receiving the N-level electrical signal output and generating an optical frequency modulated signal; and (3) receiving the optical frequency modulated signal and generating the desired RZ-DPSK optical signal.

28. 发明公开

EP2003797A1 Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them 失效
标题翻译：光发送装置，光接收装置以及包括它们的光通信系统
公开(公告)号：EP2003797A1
公开(公告)日：2008-12-17
申请号：EP08158854.3
申请日：2005-12-29
申请人： Fujitsu Limited
发明人： Akiyama, Yuichi , Hoshida, Takeshi , Miura, Akira , Kai, Yutaka , Ooi, Hiroki , Rasmussen, Jens C. , Nakamura, Kentaro , Kuwata, Naoki , Nishizawa, Yoshinori , Takahara, Tomoo , Yuki, Masahiro
IPC分类号： H04B10/155
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50595 , H04B10/5162 , H04B10/5165 , H04B10/5561 , H04B10/66 , H04B10/677
摘要： A phase shift unit (12) provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit (20). A low-frequency signal f 0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f 0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode (3). 2f 0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit (12) is controlled by feedback control so that the 2f 0 component becomes the minimum.
摘要翻译：相移单元（12）在经由构成数据调制单元（20）的一对臂发送的一对光信号之间提供规定的相位差（例如π/ 2）。低频信号f0叠加在其中一个光信号上。从另一个光信号叠加从低频信号f0偏移了π/ 2的相位的信号。一对光信号被耦合，并且其一部分被光电二极管（3）转换成电信号。包含在电信号中的2f0分量被提取。提供给相移单元（12）的偏置电压由反馈控制控制，使得2f0分量变为最小值。

29. 发明公开

EP1939679A2 Control apparatus and control method for optical modulator 审中-公开
标题翻译： Gerätund Verfahren zur Steuerungsverfahren eines optischen调制器
公开(公告)号：EP1939679A2
公开(公告)日：2008-07-02
申请号：EP08004858.0
申请日：2004-03-16
申请人： FUJITSU LIMITED
发明人： Akiyama, Yuichi , Ooi, Hiroki
IPC分类号： G02F1/225 , G02F1/03
CPC分类号： H04B10/50597 , G02F1/0121 , G02F1/0123 , G02F1/225 , G02F2201/16 , H04B10/5051 , H04B10/50575 , H04B10/50577 , H04B10/5162 , H04B10/58
摘要： An object of the invention is to provide a control system in which the phase shift between drive signals of an optical modulator can be reliably detected and compensated by a simple configuration. To this end, a control apparatus of the invention, for an optical modulator generating a signal light of a CS-RZ modulation system or the like by two LN modulators connected in series, detects the phase shift between drive signals given to the former and latter stage LN modulators, or judges the phase shift between the drive signals based on intensity information of the electric spectrum of the signal light output from the optical modulator, to control the phases of the drive signals so as to minimize the phase shift. As a result, the phase shift between the drive signals can be reliably detected and compensated by an electric circuit with a simple configuration.
摘要翻译：本发明的目的是提供一种控制系统，其中可以通过简单的配置可靠地检测和补偿光调制器的驱动信号之间的相移。为此，本发明的控制装置用于光调制器，其通过串联连接的两个LN调制器产生CS-RZ调制系统等的信号光，并检测给予前一级和后级的驱动信号之间的相移 LN调制器，或者基于从光调制器输出的信号光的电谱的强度信息来判断驱动信号之间的相移，以控制驱动信号的相位，以使相移最小化。结果，可以通过具有简单结构的电路可靠地检测和补偿驱动信号之间的相移。

30. 发明公开

EP1816763A1 Optical receiving apparatus and optical communication system comprising it 有权
标题翻译： Optische Empfangsvorrichtung und optisches Kommunikationssystem damit
公开(公告)号：EP1816763A1
公开(公告)日：2007-08-08
申请号：EP07009948.6
申请日：2005-12-29
申请人： Fujitsu Ltd.
发明人： Akiyama, Yuichi , Hoshida, Takeshi , Miura, Akira , Kai, Yutaka , Ooi, Hiroki , Rasmussen, Jens C. , Nakamura, Kentaro , Kuwata, Naoki , Nishizawa, Yoshinori , Takahara, Tomoo , Yuki, Masahiro
IPC分类号： H04B10/158
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50595 , H04B10/5162 , H04B10/5165 , H04B10/5561 , H04B10/66 , H04B10/677
摘要： A phase shift unit (12) provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit (20). A low-frequency signal f 0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f 0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode (3). 2f 0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit (12) is controlled by feedback control so that the 2f 0 component becomes the minimum.
摘要翻译：相移单元（12）在经由构成数据调制单元（20）的一对臂发送的一对光信号之间提供规定的相位差（例如，±2）。低频信号f 0叠加在一个光信号上。相位偏离低频信号f 0的信号被叠加在另一个光信号上。一对光信号被耦合，其一部分由光电二极管（3）转换成电信号。提取包含在电信号中的2f 0分量。通过反馈控制来控制提供给相移单元（12）的偏压，使得2f 0分量成为最小。

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