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91. 发明公开

EP3267600A2 RECEIVING APPARATUS AND SETTING METHOD 审中-公开
公开(公告)号：EP3267600A2
公开(公告)日：2018-01-10
申请号：EP17172715.9
申请日：2017-05-24
申请人： Fujitsu Limited
发明人： Maeda, Taizo
IPC分类号： H04B10/255 , H04B10/61 , H04B10/2557
CPC分类号： H04B10/6162 , H04B10/07951 , H04B10/07953 , H04B10/07957 , H04B10/255 , H04B10/2557 , H04B10/2572 , H04B10/6161
摘要： A receiving apparatus includes a first processor configured to compensate, in a perturbation back-propagation (PBP) scheme, waveform degradation of an optical signal by traveling an optical transmission line due to a nonlinear optical effect; a memory; and a second processor coupled to the memory and the second processor configured to change a gamma coefficient to be used in the PBP scheme, measure reception quality of the optical signal for each of gamma coefficients obtained by the changing, specify a gamma coefficient in accordance with the reception quality from among the gamma coefficients obtained by the changing, and set the specified gamma coefficient as a parameter of the PBP scheme.

92. 发明公开

EP2882118A4 POLARIZATION MULTIPLEXING OPTICAL TRANSMITTER AND METHOD FOR CONTROLLING OPERATION 审中-公开
标题翻译：光发射机POLARISATIONSMULTIPLEXIERUNG和操作其控制方法
公开(公告)号：EP2882118A4
公开(公告)日：2016-04-13
申请号：EP13825957
申请日：2013-05-07
申请人： NEC CORP
发明人： INADA YOSHIHISA
IPC分类号： H04B10/548 , H04B10/255 , H04B10/2557 , H04B10/50 , H04B10/532 , H04J11/00 , H04J14/00 , H04J14/04 , H04J14/06 , H04L27/20
CPC分类号： H04J14/06 , H04B10/255 , H04B10/2557 , H04B10/5053 , H04B10/532 , H04B10/548 , H04J14/00 , H04J14/04 , H04L27/2096
摘要： A polarization multiplexing optical transmitter of the present invention includes frequency dividing means (21) that performs frequency dividing on a clock signal having a Baud rate frequency, phase modulation means (8) that performs phase modulation on a light signal in accordance with the clock signal having undergone the frequency dividing, branching means (2) that branches the phase-modulated light into two light signals, delay means (10) that delays one branched light signal relative to the other branched light signal to generate light signals having phases inverted relative to each other, and polarization multiplexing means (5) that synthesizes the generated signals lights with orthogonal polarizations to generate a polarization multiplexed signal. Hence, the polarization multiplexing optical transmitter that can further improve the signal quality can be accomplished.

93. 发明公开

EP0884866A4 OPTICAL COMMUNICATION SYSTEM 失效
标题翻译：选择ÜBERTRAGUNGSSYSTEM
公开(公告)号：EP0884866A4
公开(公告)日：2001-01-31
申请号：EP96906000
申请日：1996-03-13
申请人： HITACHI LTD
发明人： KIKUCHI NOBUHIKO , SASAKI SINYA
IPC分类号： H04B10/255 , H04B10/18
CPC分类号： H04B10/255
摘要： An optical communication system using an optical fiber grating (FBG) for distributed compensation. A receiving station has an FBG (121) for narrow-band, distributed compensation, while a transmitting station uses an FBG (120) for distributed compensation and simultaneously for the stabilization of the waveform of a transmitting light source (101). The distributed compensation by the FBG (120) in the transmitting station suppresses the deterioration caused by a self-phase modulating effect, and decreases the required band width for the FBG (121).
摘要翻译：一种使用光纤光栅（FBG）进行分布式补偿的光通信系统。接收站具有用于窄带分布式补偿的FBG（121），而发射站使用FBG（120）进行分布式补偿并同时用于稳定发射光源（101）的波形。由发送站中的FBG（120）进行的分布式补偿抑制了由自相位调制效应引起的劣化，并减小了FBG（121）所需的带宽。

94. 发明授权

US10313016B2 Data transmission and receiving methods based on orthogonal frequency division multiplexing technology, and apparatus 有权
公开(公告)号：US10313016B2
公开(公告)日：2019-06-04
申请号：US15852561
申请日：2017-12-22
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Yuanyuan Fang , Liangchuan Li
IPC分类号： H04B10/04 , H04B10/516 , H04B10/255 , H04L27/20 , H04L27/26 , H04L5/00 , H04B10/2543 , H04B10/548
摘要： Embodiments of the present invention provide data transmission and receiving methods based on an orthogonal frequency division multiplexing technology, and an apparatus. According to the present invention, grouping and differential encoding are performed on multiple subcarriers, and further, carrier location adjustment is performed, so as to effectively improve non-linear tolerance of a multi-subcarrier system.

95. 发明授权

US09905994B2 Optical fiber and optical transport system 有权
公开(公告)号：US09905994B2
公开(公告)日：2018-02-27
申请号：US15361629
申请日：2016-11-28
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： Yoshinori Yamamoto , Masaaki Hirano
IPC分类号： H01S3/067 , G02B6/02 , H01S3/30 , G02B6/036 , H04B10/255 , H04B10/291 , H04B10/25 , H01S3/16
CPC分类号： H01S3/302 , G02B6/02014 , G02B6/02019 , G02B6/036 , G02B6/03627 , H01S3/06729 , H01S3/06754 , H01S3/06758 , H01S3/1608 , H04B10/2543 , H04B10/255 , H04B10/291 , H04B10/2916
摘要： The present invention relates to an optical fiber which can improve OSNR in an optical transmission system in which Raman amplification and an EDFA are combined. With respect to the optical fiber, a predetermined conditional formula is satisfied by an effective area Aeff1450 [μm2] at a wavelength of 1450 nm, a transmission loss α1450 [/km] at a wavelength of 1450 nm, and a transmission loss α1550_dB [dB/km] at a wavelength of 1550 nm. Further, with respect to the optical fiber, another predetermined conditional formula is satisfied by an effective area Aeff1550 [μm2] at a wavelength of 1550 nm, and a transmission loss α1550 [/km] at a wavelength of 1550 nm.

96. 发明授权

US09544064B2 Electro-optical implementation of an optical spectrum inverter 有权
标题翻译：光学光学实现光谱逆变器
公开(公告)号：US09544064B2
公开(公告)日：2017-01-10
申请号：US14415028
申请日：2012-07-19
申请人： Bengt-Erik Olsson , Christina Larsson
发明人： Bengt-Erik Olsson , Christina Larsson
IPC分类号： H04B10/00 , H04B10/61 , H04B10/2531 , H04B10/255 , H04B10/2557 , H04J14/02 , H04J14/06 , H04L5/14 , H04B10/64
CPC分类号： H04B10/6166 , H04B10/2531 , H04B10/255 , H04B10/2557 , H04B10/6163 , H04B10/64 , H04J14/0202 , H04J14/06 , H04L5/14
摘要： The invention relates to an optical spectrum inverter, configured for counteracting phase distortion effects in an optical channel over a predefined frequency range, to an inverter node, configured for duplex operation in at least two wavelength channels, and to a method for counteracting phase distortion effects in an optical channel. The optical spectrum inverter comprises an optical receiver comprising a polarization diversity unit configured for polarization resolved detection, wherein the optical receiver is configured for receiving an optical input signal comprising a first wavelength span and for converting the optical input signal to an electrical signal, and an optical modulator connectable to the optical receiver and configured for modulating the electrical signal onto an optical signal, wherein the optical modulator comprises an optical filter which is configured for selecting a second wavelength span of the optical signal corresponding to an optical output side band of an inverted spectrum of the optical channel such that phase distortion effects are counteracted at least partly over the predefined frequency range. In this way, an optical spectrum inverter is provided which is simple and cost-effective to realize and allows higher optical power levels in conjunction with a higher capacity per optical channel and is also adapted for longer transmission distances.
摘要翻译：本发明涉及一种被配置为将预定频率范围内的光信道中的相位失真效应抵消到被配置为在至少两个波长信道中进行双工操作的逆变器节点的光谱逆变器以及用于抵消相位失真效应的方法在光通道中。所述光学频谱逆变器包括光接收器，该光接收器包括被配置用于偏振分辨检测的偏振分集单元，其中所述光接收器被配置为接收包括第一波长跨度的光输入信号并将所述光输入信号转换成电信号，光调制器，其可连接到光接收器并且被配置用于将电信号调制到光信号上，其中所述光调制器包括滤光器，所述滤光器被配置为选择对应于反转的光输出侧带的所述光信号的第二波长跨度光通道的频谱，使得相位失真效应至少部分地超过预定义的频率范围。以这种方式，提供了一种光谱逆变器，其实现并且允许更高的光功率水平与每个光通道的更高容量相结合，并且还适合于更长的传输距离。

97. 发明授权

US06862134B2 Distributed optical amplifier, amplifying method, and optical communication system 失效
标题翻译：分布式光放大器，放大法和光通信系统
公开(公告)号：US06862134B2
公开(公告)日：2005-03-01
申请号：US10321522
申请日：2002-12-18
申请人： Takafumi Terahara , Takeshi Hoshida
发明人： Takafumi Terahara , Takeshi Hoshida
IPC分类号： G02F1/35 , H01S3/06 , H01S3/067 , H01S3/13 , H01S3/30 , H04B10/07 , H04B10/2519 , H04B10/2525 , H04B10/2537 , H04B10/255 , H04B10/2557 , H04B10/2563 , H04B10/29 , H04B10/296 , H01S3/00
CPC分类号： H01S3/302 , H01S3/1301 , H01S3/1302
摘要： A distributed optical amplifier comprises an optical amplifying medium for distributed optical amplification, light supplying means for supplying a pump light to said optical amplifying medium, a pump light detecting part for detecting optical power of said pump light, adjusting means for adjusting an incident power of the light amplified with said optical amplifying medium, and control means for adjusting incident optical power of said light according to an output of said pump light detecting means. Because of this, the present invention can be controlled with a simplified structure of an optical power of an pump light, and an optical power of light to be amplified. A distributed optical amplifier as such can, for example, be applied in optical transmission systems.
摘要翻译：分布式光放大器包括用于分布式光放大的光放大介质，用于向所述光放大介质提供泵浦光的供光装置，用于检测所述泵浦光的光功率的泵浦光检测部分，用于调节所述泵浦光的入射功率的调节装置用所述光放大介质放大的光，以及根据所述泵浦光检测装置的输出调节所述光的入射光功率的控制装置。因此，可以通过泵浦光的光功率的简化结构和要放大的光的光功率来控制本发明。例如，分布式光放大器可以应用于光传输系统中。

98. 发明授权

US5995278A Optical transmission system 失效
标题翻译：光传输系统
公开(公告)号：US5995278A
公开(公告)日：1999-11-30
申请号：US113549
申请日：1998-07-10
申请人： Nobuhiko Kikuchi , Shinya Sasaki
发明人： Nobuhiko Kikuchi , Shinya Sasaki
IPC分类号： H04B10/2507 , H04B10/07 , H04B10/2525 , H04B10/255 , H04B10/2563 , H04B10/54 , H04B10/58 , H04J1/00 , H04B10/18
CPC分类号： H04B10/2519 , H04B10/25253 , H04B10/255
摘要： An optical transmission system in which influences of worsening of the waveform by SPM are canceled by setting an amount of compensation of a dispersion compensator at about 50% of a total amount of dispersion of an optical fiber transmission line so that received waveform is almost not varied, even if light intensity is varied. In the case where a plurality of dispersion compensators are used, the number of compensators is optimized by setting arrangement interval in the neighborhood of a receiving end at a small value. Further, in a transmission line, in which amounts of dispersion of optical fibers have positive and negative fluctuations, the smallest transmission distance of a transmission system is increased by effecting dispersion compensation so that an expected value of the total amount of dispersion of the transmission line is abnormal dispersion.
摘要翻译：通过将色散补偿器的补偿量设置在光纤传输线的总色散的约50％以使接收波形几乎不变的光传输系统，其中SPM波形恶化的影响被消除即使光强变化也是如此。在使用多个色散补偿器的情况下，通过将接收端附近的布置间隔设定为较小的值来优化补偿器的数量。此外，在其中光纤的色散量具有正和负波动的传输线中，通过进行色散补偿来增加传输系统的最小传输距离，使得传输线的总色散量的期望值是异常分散。

99. 发明授权

US5877881A Optical transmission system 失效
标题翻译：光传输系统
公开(公告)号：US5877881A
公开(公告)日：1999-03-02
申请号：US752516
申请日：1996-11-20
申请人： Akira Miyauchi , Kazuo Yamane , Yumiko Kawasaki , Satoru Okano
发明人： Akira Miyauchi , Kazuo Yamane , Yumiko Kawasaki , Satoru Okano
IPC分类号： H04B10/2507 , H04B10/2519 , H04B10/2525 , H04B10/255 , H04B10/00
CPC分类号： H04B10/2519 , H04B10/25137 , H04B2210/252 , H04B2210/254
摘要： A chirping parameter .alpha. in a transmitter is set to a positive value with respect to an SMF that has a positive dispersion value with respect to signal light. A dispersion compensator is provided not only at the receiving end but also at the transmitting end. This achieves a reduction in the number of types of dispersion compensators that should be prepared in advance to optimize transmission characteristics despite the variety in the lengths of transmission fibers.
摘要翻译：发射机中的啁啾参数α被设置为相对于相对于信号光具有正色散值的SMF的正值。不但在接收端，而且在发送端都提供了色散补偿器。尽管传输光纤的长度有所不同，但是尽管实现了传输特性的优化，但是其预先准备的色散补偿器的种类数量的减少。

100. 发明授权

US5636046A Optical dispersion compensation method using transmissible band determined from synergetic effect of self phase modulation and group velocity dispersion 失效
标题翻译：使用自相位调制和组速度色散的协同效应确定的透射带的光色散补偿方法
公开(公告)号：US5636046A
公开(公告)日：1997-06-03
申请号：US425616
申请日：1995-04-20
申请人： George Ishikawa , Hideyuki Miyata , Hiroshi Onaka , Motoyoshi Sekiya , Kazue Otsuka
发明人： George Ishikawa , Hideyuki Miyata , Hiroshi Onaka , Motoyoshi Sekiya , Kazue Otsuka
IPC分类号： H04J14/00 , G02B6/34 , H04B10/2507 , H04B10/2525 , H04B10/255 , H04B10/2563 , H04B10/299 , H04J14/02 , H04B10/00
CPC分类号： G02B6/29377 , G02B6/4215 , H04B10/25133 , H04B10/2525 , H04B10/25253 , H04B10/255 , H04B10/2563 , H04J14/0224 , H04B2210/252 , H04B2210/254 , H04B2210/258 , H04J14/02
摘要： The invention provides an optical wavelength multiplex transmission method wherein a band in the proximity of a zero dispersion wavelength of an optical fiber is used and optical signals are disposed at efficient channel spacings taking an influence of the band, the wavelength dispersion and the four wave mixing into consideration to realize an optical communication system of an increased capacity which is not influenced by crosstalk by FWM. When optical signals of a plurality of channels having different wavelengths are to be multiplexed and transmitted using an optical fiber, a four wave mixing suppressing guard band of a predetermined bandwidth including the zero-dispersion wavelength .lambda..sub.0 of the optical fiber is set, and signal light waves of the plurality of channels to be multiplexed are arranged on one of the shorter wavelength side and the longer wavelength side outside the guard band.
摘要翻译：本发明提供一种光波长多路复用传输方法，其中使用光纤零色散波长附近的频带，并且将光信号设置在影响频带，波长色散和四波混频的有效信道间隔处考虑到实现不受FWM串扰影响的增加容量的光通信系统。当使用光纤复用并发送具有不同波长的多个信道的光信号时，设置包括光纤的零色散波长λ0的预定带宽的四波混频抑制保护带，并且信号要复用的多个信道的光波被布置在保护带外部的较短波长侧和较长波长侧中的一个上。

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