公开(公告)号：US09614617B2

公开(公告)日：2017-04-04

申请号：US13500158

申请日：2010-10-06

申请人： Arthur James Lowery ,  Liang Bangyuan Du

发明人： Arthur James Lowery ,  Liang Bangyuan Du

IPC分类号： H04B10/00 ,  H04B10/2563 ,  H04B10/2557

CPC分类号： H04B10/2563 ,  H04B10/2557

摘要： An apparatus (104) mitigates cross-channel nonlinear distortion of an optical signal (138) carried on one of a plurality of wavelength channels (118) in a wavelength division multiplexed (WDM) transmission system (100). The apparatus includes a first optical receiver (126) which is arranged to detect a measure (134) of aggregate optical power of the plurality of wavelength channels. A nonlinear dispersion compensator includes means (144) for applying a phase modulation to the optical signal in proportion to the measure of aggregate optical power.

公开(公告)号：US09178641B2

公开(公告)日：2015-11-03

申请号：US13177170

申请日：2011-07-06

申请人： Hai Xu ,  Michael Francis Van Leeuwen ,  Emily F. Burmeister ,  Stephen G. Grubb

发明人： Hai Xu ,  Michael Francis Van Leeuwen ,  Emily F. Burmeister ,  Stephen G. Grubb

IPC分类号： H04J14/02 ,  H04B10/2525 ,  H04B10/2563

CPC分类号： H04J14/02 ,  H04B10/2525 ,  H04B10/25253 ,  H04B10/2563

摘要： Consistent with the present disclosure, chromatic dispersion is introduced into an optical communication path including multiple segments or spans of dispersion shifted fiber (DSF). The chromatic dispersion generates phase mismatching between optical signals propagating along the optical communication path, i.e., the optical signals are decorrelated, such that mixing products are reduced inmagnitude, and the noise attributable to four wave mixing is correspondingly reduced.

摘要翻译： 与本公开一致，色散被引入到包括色散位移光纤（DSF）的多个段或跨度的光通信路径中。 色散产生沿着光通信路径传播的光信号之间的相位失配，即，光信号被去相关，使得混合产物的体积减小，并且相应地降低归因于四波混频的噪声。

公开(公告)号：US06970650B2

公开(公告)日：2005-11-29

申请号：US10477535

申请日：2003-02-26

申请人： Satoshi Kajiya ,  Kaoru Kinjo ,  Takashi Mizuochi

发明人： Satoshi Kajiya ,  Kaoru Kinjo ,  Takashi Mizuochi

IPC分类号： G02F1/35 ,  H01S3/10 ,  H01S3/30 ,  H04B10/00 ,  H04B10/2563 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04B10/2971 ,  H04B10/2503 ,  H04B10/2916

摘要： In a one-fiber bidirectional optical transmission system in which output optical signals of optical transmitter-receivers respectively connected to the opposite ends of one optical fiber transmission line are bidirectionally transmitted in the optical fiber transmission line, which utilizes a Raman amplification effect by backward pumping, a frequency satisfying the conditions of |fs1−f0|≠|fp2−f0| and |fs2−f0|≠|fp1−f0| is selected, where f0 is a zero dispersion frequency of the optical fiber transmission line, fs1 and fs2 are the frequencies of the first signal and the second signal, respectively, and fp1 and fp2 are frequencies of the first Raman pump light and the second Raman pump light, respectively.

摘要翻译： 在单纤双向光传输系统中，其中分别连接到一根光纤传输线的相对端的光发射器 - 接收器的输出光信号在光纤传输线中双向传输，其利用通过反向泵浦的拉曼放大效应 满足以下条件的频率满足条件| f | ＆lt; f＆gt;＆lt;＆lt;＆lt;＆lt; /＆gt; 被选择，其中f 0是光纤传输线的零色散频率，f s1和f 2 s 2是第一个 信号和第二信号，f 1 p1和f 2 p 2分别是第一拉曼泵浦光和第二拉曼泵浦光的频率。

公开(公告)号：US06907172B2

公开(公告)日：2005-06-14

申请号：US10228267

申请日：2002-08-27

申请人： Toshiaki Okuno ,  Masayuki Nishimura

发明人： Toshiaki Okuno ,  Masayuki Nishimura

IPC分类号： G02B6/036 ,  G02B6/02 ,  G02B6/34 ,  G02F1/35 ,  H04B10/2507 ,  H04B10/2525 ,  H04B10/2563 ,  H04B10/2569 ,  H04B10/294 ,  H04B10/297 ,  G02B6/20

CPC分类号： G02B6/02019 ,  G02B6/02247 ,  G02B6/03611 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/29377 ,  H04B10/25253 ,  H04B10/2916 ,  H04B2210/003

摘要： An optical communication system has a configuration in which an optical transmission line is laid between a repeater (transmitter) and another repeater (receiver). The optical transmission line is formed by fusion-splicing a first optical fiber on the upstream side and a second optical fiber on the downstream side. The first optical fiber has a transmission loss of 0.25 dB or less, and an effective area of 80 μm2 or above (preferably 100 μm2 or above), at a wavelength of 1550 nm, which is the wavelength of signal light. The second optical fiber is connected to the downstream end of the first optical fiber and has positive dispersion regions and negative dispersion regions which are alternately arranged along the longitudinal direction and whose chromatic dispersions at a wavelength of 1550 nm are positive and negative, respectively.

摘要翻译： 光通信系统具有在中继器（发射机）与另一个中继器（接收机）之间铺设光传输线路的结构。 光传输线通过在上游侧熔接第一光纤和在下游侧熔接第二光纤而形成。 第一光纤的波长为传输损耗为0.25dB以下，有效面积为80μm以上（优选为100μm以上），优选为100nm以上。 为1550nm，这是信号光的波长。 第二光纤连接到第一光纤的下游端，并且具有正的色散区域和负色散区域，它们沿纵向方向交替布置，并且其在1550nm的波长上的色散分别为正和负。

公开(公告)号：US06901184B2

公开(公告)日：2005-05-31

申请号：US10626542

申请日：2003-07-25

申请人： Thierry Zami

发明人： Thierry Zami

IPC分类号： H04B10/2563 ,  H04J14/00 ,  H04J14/02 ,  G02B6/00 ,  G02B6/24

CPC分类号： H04B10/2563 ,  H04J14/02 ,  H04J14/0224

摘要： In order to reduce the effects of non-linear phenomena in WDM optical transmission networks, the optical carrier frequencies of the multiplex signals belong to a comb of frequencies that are spectrally spaced apart in irregular manner while nevertheless belonging to a chart of optical frequencies that are spectrally spaced apart in regular manner at a pitch df. These frequencies are selected in such a manner as to enable them to be dropped from the multiplexed signals by N respective periodic optical filtering operations having the same free spectrum interval (Df) equal to M.df, where M is an integer greater than or equal to N, the filtering operations enabling N consecutive frequencies to be dropped from the chart. In addition, the spacing between any pair of frequencies of the comb is different from any integer multiple greater than or equal to 1 of the free spectrum interval (Df).

摘要翻译： 为了减少WDM光传输网络中非线性现象的影响，多路复用信号的光载波频率属于以不规则方式频谱间隔的频率梳，同时属于光频率图 以间距df规则地间隔开。 这些频率被选择为使得它们能够从复用的信号中丢弃具有等于M.df的相同自由频谱间隔（Df）的N个相应的周期性光学滤波操作，其中M是大于或等于的整数 到N，使得能够从图表中丢弃N个连续频率的滤波操作。 另外，梳子的任何频率对之间的间隔与自由谱间隔（Df）大于或等于1的任何整数倍不同。

公开(公告)号：US06891663B2

公开(公告)日：2005-05-10

申请号：US10219246

申请日：2002-08-16

申请人： Susumu Kinoshita ,  Yasushi Sugaya

发明人： Susumu Kinoshita ,  Yasushi Sugaya

IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/131 ,  H01S3/23 ,  H04B3/04 ,  H04B10/07 ,  H04B10/2507 ,  H04B10/2525 ,  H04B10/2557 ,  H04B10/2563 ,  H04B10/29 ,  H04B10/294 ,  H04B10/297 ,  H01S3/00

CPC分类号： H04B10/2941 ,  H01S3/06704 ,  H01S3/06725 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/1301 ,  H01S3/2391 ,  H04B10/25133 ,  H04B10/296 ,  H04B10/2972 ,  H04B2210/256 ,  H04B2210/258

摘要： An optical amplifier, or optical repeater, for amplifying wavelength division multiplexed (WDM) light. A first demultiplexer demultiplexes the WDM light into first and second lights corresponding to different wavelengths in the WDM light. First and second optical amplifiers amplify the first and second lights, respectively. A first multiplexer multiplexes the amplified first and second lights into a multiplexed light. A dispersion compensator compensates for dispersion in the multiplexed light. A second demultiplexer demultiplexes the dispersion compensated, multiplexed light into the first and second lights. Third and fourth optical amplifiers amplify the demultiplexed first and second lights, respectively. A second multiplexer multiplexes the amplified first and second lights from the third and fourth optical amplifiers into a WDM light. The optical amplifier can be configured so that the first and second lights travel through the dispersion compensator in opposite directions.

摘要翻译： 用于放大波分复用（WDM）光的光放大器或光中继器。 第一解复用器将WDM光分解成对应于WDM光中的不同波长的第一和第二光。 第一和第二光放大器分别放大第一和第二灯。 第一多路复用器将放大的第一和第二光复用到复用光中。 色散补偿器补偿复用光中的色散。 第二解复用器将色散补偿的多路复用光解复用为第一和第二光。 第三和第四光放大器分别放大解复用的第一和第二光。 第二复用器将来自第三和第四光放大器的放大的第一和第二光复用到WDM光中。 光放大器可以被配置成使得第一和第二光沿相反方向行进通过色散补偿器。

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。

公开(公告)号：US6115173A

公开(公告)日：2000-09-05

申请号：US206911

申请日：1998-12-07

申请人： Keiji Tanaka ,  Noboru Edagawa ,  Shu Yamamoto

发明人： Keiji Tanaka ,  Noboru Edagawa ,  Shu Yamamoto

IPC分类号： H04J14/00 ,  H04B10/2557 ,  H04B10/2563 ,  H04B10/29 ,  H04B10/291 ,  H04J14/02 ,  H01S3/00

CPC分类号： H04B10/2935 ,  H04B10/2557

摘要： In an optical fiber transmission line between two terminal stations, an input side wavelength converter for up-shifting a wavelength of a signal light is inserted at a front part of each of the optical amplifiers and an output side wavelength converter for down-shifting a wavelength of a signal light is inserted at a rear step of the optical amplifiers. Signal lights transmit in a wavelength band shorter or longer than the zero dispersion wavelength of the transmission optical fiber on said transmission optical fibers. The input side wavelength converter converts the wavelength of the signal lights from the transmission optical fibers within the amplifying bandwidth of the optical amplifiers and the output side wavelength converter returns the wavelength of the signal lights optically amplified by the optical amplifiers.

摘要翻译： 在两个终端站之间的光纤传输线路中，用于将信号光波长上变频的输入侧波长转换器插入每个光放大器的前部，输出侧波长转换器用于将波长 在光放大器的后台插入信号光。 信号光在比所述传输光纤上的传输光纤的零色散波长更短或更长的波长带中传输。 输入侧波长转换器在光放大器的放大带宽内转换来自传输光纤的信号光的波长，并且输出侧波长转换器返回由光放大器光学放大的信号光的波长。

公开(公告)号：US6084993A

公开(公告)日：2000-07-04

申请号：US150016

申请日：1998-09-09

申请人： Kazunori Mukasa

发明人： Kazunori Mukasa

IPC分类号： G02B6/028 ,  G02B6/036 ,  G02B6/34 ,  H04B10/2507 ,  H04B10/2525 ,  H04B10/2563 ,  G02B6/26

CPC分类号： G02B6/03644 ,  G02B6/0281 ,  G02B6/03627 ,  G02B6/29377 ,  H04B10/25253 ,  G02B6/02009 ,  G02B6/02242 ,  G02B6/02257 ,  G02B6/02271

摘要： The invention is to provide an optical transmission link suitable for a high speed and high bit rate wavelength division multiplex transmission. An optical transmission link 1 is composed of a non-linearity diminishing optical fiber F.sub.1, a dispersion adjusted transmission optical fiber F.sub.2, and an optical fiber F.sub.3 for diminishing and adjusting a dispersion slope. The mode field diameter of the non-linearity diminishing optical fiber F.sub.1 is made into 12 m or more. The dispersion slope is made small to be nearly zero with the mode field diameter of the dispersion adjusted transmission optical fiber F.sub.2 set to 10 m or more, and the dispersion produced at the non-linearity diminishing optical fiber F.sub.3 is adjusted to be small. At the optical fiber F.sub.3 for diminishing and adjusting a dispersion slope, the dispersion slope of the entire optical transmission link 1 is adjusted to nearly zero. The refractive index profile of the fibers F1 and F2 is made into a segment type, and the refractive index profile of the optical fiber F3 for diminishing and adjusting a dispersion slope is made W-shaped. The absolute value of dispersion at any point position in the lengthwise direction of the optical transmission link 1 is made greater than 0.5 ps/nm/km, thereby suppressing the generation of four-wavelength mixture.

摘要翻译： 本发明提供一种适用于高速和高比特率波分复用传输的光传输链路。 光传输链路1由非线性递减光纤F1，色散调节透射光纤F2和用于减小和调整色散斜率的光纤F3组成。 非线性递减光纤F1的模场直径为12μm以上。 将色散调制透射光纤F2的模场直径设定为10μm以上时，使色散斜率变得小到几乎为零，并且将在非线性递减光纤F3处产生的色散调整为较小。 在用于减小和调整色散斜率的光纤F3上，整个光传输链路1的色散斜率被调节到几乎为零。 将纤维F1和F2的折射率分布形成为片状，将用于减小和调节色散斜率的光纤F3的折射率分布形成为W形。 在光传输连杆1的长度方向的任何点位置处的色散的绝对值大于0.5ps / nm / km，从而抑制四波长混合物的产生。

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。