公开(公告)号：US07688501B2

公开(公告)日：2010-03-30

申请号：US10633927

申请日：2003-08-04

申请人： Ryu Yokoyama

发明人： Ryu Yokoyama

IPC分类号： H01S3/00

CPC分类号： H04B10/2918 ,  H01S3/09408 ,  H01S3/302 ,  H04B10/2916

摘要： At an optical transmission system that uses plural light sources for Raman amplification, even when a failure occurred in a pumping light source in one of the light sources for Raman amplification, the signal light output level and its wavelength characteristic are not deteriorated at the final stage, and the number of components in the system is not made to be large and the cost of the system is not made to be high. This optical transmission system is provided. At an optical transmission system using “n” light sources for Raman amplification, a first to “n−1”th light sources for Raman amplification do not provide spare pumping light sources, and an “n”th light source for Raman amplification provides the spare pumping light sources. When a pumping light source in one of the “n” light sources for Raman amplification had a failure, the spare pumping light source in the “n”th light source for Raman amplification corresponding to the failure occurred pumping light source is worked. With this, the signal light output level and its wavelength characteristic are recovered to a normal state before the failure occurred.

摘要翻译： 在使用多个光源进行拉曼放大的光传输系统中，即使在用于拉曼放大的一个光源中的泵浦光源中发生故障，信号光输出电平及其波长特性在最后阶段也不会劣化 ，并且系统中的部件的数量不会变大，并且系统的成本不会变高。 提供该光传输系统。 在使用“n”个光源用于拉曼放大的光传输系统中，用于拉曼放大的第一至第n-1个光源不提供备用的泵浦光源，并且用于拉曼放大的“第n”个光源提供 备用泵浦光源。 当用于拉曼放大的“n”个光源之一的泵浦光源出现故障时，对于发生泵浦光源的故障的“第n”个用于拉曼放大的光源的备用泵浦光源进行加工。 由此，信号光输出电平及其波长特性在发生故障之前恢复到正常状态。

公开(公告)号：US20090279164A1

公开(公告)日：2009-11-12

申请号：US12308781

申请日：2007-06-26

申请人： Masayuki Matsumoto

发明人： Masayuki Matsumoto

IPC分类号： H01S3/00

CPC分类号： H04B10/299 ,  G02F1/3555 ,  G02F1/365 ,  G02F2201/17 ,  G02F2203/055 ,  H04B10/2918

摘要： An optical nonlinear medium 1, first and second optical circulators 2, 3 that are connected respectively to a front end and a rear end of the optical nonlinear medium, a first optical amplifier 4 that amplifies an inputted optical signal and causes it to enter the first optical circulator 2, a first optical filter 5 that passes light in a predetermined wavelength range, into which outgoing light passing through the first optical circulator, entering the front end of the optical nonlinear medium and leaving the rear end thereof enters through the second optical circulator, a second optical amplifier 6 that amplifies an optical signal passing through the first optical filter and causes it to enter the second optical circulator 3, and a second optical filter 7 that passes light in a predetermined wavelength range, into which returning light passing through the second optical circulator, entering the rear end of the optical nonlinear medium and leaving the front end thereof enters through the first optical circulator are provided. It is possible to reduce the length of the optical nonlinear medium that is needed for regenerating an optical signal utilizing a nonlinear optical effect.

摘要翻译： 分别连接到光学非线性介质的前端和后端的光学非线性介质1，第一和第二光学循环器2,3，第一光学放大器4，其放大输入的光学信号并使其进入第一 光循环器2，使通过第一光循环器的出射光进入到光非线性介质的前端并离开其后端的预定波长范围内的光进入第二光循环器的第一滤光器5 放大通过第一滤光器的光信号并使其进入第二光环行器3的第二光放大器6以及使预定波长范围内的光通过的第二滤光器7， 第二光环行器，进入光非线性介质的后端并离开其前端进入 提供第一光循环器。 可以利用非线性光学效应来减小再生光信号所需的光学非线性介质的长度。

公开(公告)号：US07457546B2

公开(公告)日：2008-11-25

申请号：US10747314

申请日：2003-12-30

申请人： Toshiki Tanaka ,  Takao Naito

发明人： Toshiki Tanaka ,  Takao Naito

IPC分类号： H04B10/12

CPC分类号： H04B10/25253 ,  H04B10/2918

摘要： An optical transmission system that alleviates waveform distortions due to nonlinear effects in fibers. A transmitter sends WDM signals to a receiver over a dispersion-managed optical transmission line with in-line optical repeaters. The transmission line is divided into a plurality of dispersion compensation intervals each composed of a main segment and a compensation segment. Chromatic dispersion is managed such that the dispersion compensation intervals have a non-zero net dispersion at every boundary point between them, or such that the number of zero-dispersion boundary points is reduced. The main segment is a series of repeater sections with negative dispersion, while the compensation segment is a single repeater section with positive dispersion. Non-uniform distribution of net chromatic dispersions over the transmission length is achieved by combining repeater section with different average dispersions, dispersion compensation intervals with different numbers of repeater sections, or repeater sections with different span lengths.

摘要翻译： 一种减轻由于光纤非线性效应引起的波形失真的光传输系统。 发射机通过具有直列光中继器的色散管理光传输线路向接收机发送WDM信号。 传输线被分成多个色散补偿间隔，每个色散补偿间隔由主要段和补偿段组成。 管理色散，使得色散补偿间隔在它们之间的每个边界点处具有非零净色散，或者使得零色散边界点的数量减少。 主段是一系列具有负色散的中继器段，而补偿段是具有正色散的单个中继器段。 通过将中继器部分与不同的平均色散，具有不同数量的中继器部分的色散补偿间隔或具有不同跨度长度的中继部分组合来实现净色散在传输长度上的不均匀分布。

公开(公告)号：US07274871B2

公开(公告)日：2007-09-25

申请号：US10500019

申请日：2001-12-27

申请人： Roberto Avallone ,  Andrea Fregosi ,  Carlo Boidi

发明人： Roberto Avallone ,  Andrea Fregosi ,  Carlo Boidi

IPC分类号： H04B10/08 ,  H04B17/00

CPC分类号： H04B10/2918 ,  H04B10/0777 ,  H04B10/2916 ,  H04B2210/074

摘要： An optical transmission system having a supervisory system of devices disposed along an optical link. Counter-propagating Raman amplifiers are disposed along the optical link. Low-frequency supervisory signals are superimposed on the optical signals traveling on the optical link by suitable modulators in the devices disposed along the line. Counter-propagating Raman amplifiers amplify optical signals and do not introduce a substantial amount of attenuation on the low-frequency supervisory signals.

摘要翻译： 一种光传输系统，具有沿光链路设置的设备的监控系统。 反向传播的拉曼放大器沿光链路放置。 低频监控信号通过在沿线设置的设备中的合适的调制器叠加在光链路上行进的光信号上。 反向传播的拉曼放大器放大光信号，并且不会在低频监控信号上引入大量的衰减。

公开(公告)号：US07196838B2

公开(公告)日：2007-03-27

申请号：US10003298

申请日：2001-12-06

申请人： Robert M. Adams, Sr. ,  Lowell Seal ,  Brent R. Pohl ,  Brett Goldstein

发明人： Robert M. Adams, Sr. ,  Lowell Seal ,  Brent R. Pohl ,  Brett Goldstein

IPC分类号： H01S3/00 ,  H04B10/16 ,  G02B6/44

CPC分类号： H04B10/2918 ,  G02B6/4428 ,  G02B6/4442 ,  H04B10/2916

摘要： Repeaters for use in amplifying optical data signals transmitted through undersea fiber optic cables are disclosed. Raman amplification schemes using 100 or more pump lasers are integrated into industry standard sized pressure vessels for amplifying optical data signals transmitted through one or more fiber optic pairs. Such repeaters include high density packaging to permit numerous active and passive optical components, as well as significant lengths of optical fiber, to reside within legacy sized pressure vessels.

摘要翻译： 公开了用于放大通过海底光缆传输的光数据信号的中继器。 使用100个或更多个泵浦激光器的拉曼放大方案集成到工业标准尺寸的压力容器中，用于放大通过一个或多个光纤对传输的光学数据信号。 这种中继器包括高密度封装，以允许许多有源和无源光学部件以及大量长度的光纤驻留在传统尺寸的压力容器内。

公开(公告)号：US07146100B2

公开(公告)日：2006-12-05

申请号：US10740539

申请日：2003-12-22

申请人： Takeo Osaka

发明人： Takeo Osaka

IPC分类号： H04B10/00 ,  H04B10/08

CPC分类号： H04B10/2918 ,  H04B10/0775 ,  H04B10/2916 ,  H04B2210/074

摘要： A Raman amplifier repeater comprising a Raman excitation light production/answer signal superimposition unit for producing a first reply signal for a down-direction line with respect to a monitor control command, an answer signal production unit for producing a second reply signal with respect to the monitor control command, and a command reply switch for selectively using the first reply signal when an optical signal passing through a down-direction line on a second terminal station side is inputted as an answer signal with respect to the monitor control command and the second reply signal when the optical signal is not inputted through the second terminal station side down-direction line. With this configuration, high-quality monitor control is feasible even if a disconnection/break trouble occurs in an optical fiber in conducting the optical amplification repeating by the Raman amplification.

摘要翻译： 一种拉曼放大器中继器，包括：拉曼激励光产生/应答信号叠加单元，用于相对于监视控制命令产生用于下行线的第一应答信号;响应信号产生单元，用于产生相对于监视器控制命令的第二应答信号 监视控制命令和命令应答开关，用于当通过第二终端侧的下行线的光信号被输入时，选择性地使用第一应答信号作为相对于监视器控制命令和第二应答的应答信号 当没有通过第二终端侧下行线输入光信号时信号。 利用这种配置，即使在进行通过拉曼放大重复的光学放大的光纤中发生断线/断线故障，高质量的监视器控制也是可行的。

公开(公告)号：US07123405B2

公开(公告)日：2006-10-17

申请号：US10779672

申请日：2004-02-18

申请人： Ryu Yokoyama ,  Takaaki Ogata

发明人： Ryu Yokoyama ,  Takaaki Ogata

IPC分类号： H01S3/00 ,  H04B10/08

CPC分类号： H04B10/2918 ,  H04B10/071 ,  H04B10/0775 ,  H04B10/0777 ,  H04B2210/077 ,  H04B2210/078

摘要： An optical amplifying and relaying system capable of easily and highly accurately monitor troubles in optical amplifiers provided in an up and a down optical fiber transmission line opposing each other is disclosed. Monitoring light signal folding-back lines including variable optical attenuators 4a and 4b and wavelength selective reflecting means 5a and 5b, respectively, are provided between optical transmission lines L1 and L2, which oppose each other and on which optical amplifiers 4a and 4b are disposed each other.

摘要翻译： 公开了一种能够容易且高精度地监视设置在彼此相对的上下光纤传输线路中的光放大器中的故障的光放大和中继系统。 在彼此相对的光传输线L 1和L 2之间分别设置包括可变光衰减器4a和4b以及波长选择反射装置5a和5b的光信号折叠线，并且在其上放置光放大器 图4a和4b彼此配置。

公开(公告)号：US06937820B2

公开(公告)日：2005-08-30

申请号：US09791915

申请日：2001-02-26

申请人： Hiroyuki Iwaki ,  Tetsuo Wada

发明人： Hiroyuki Iwaki ,  Tetsuo Wada

IPC分类号： H04B10/00 ,  H04B10/03 ,  H04B10/07 ,  H04B10/077 ,  H04B10/079 ,  H04B10/29 ,  H04B10/294 ,  H04B10/297 ,  H04B17/40 ,  H04J14/00 ,  H04J14/02 ,  H04L29/14

CPC分类号： H04B10/2918 ,  H04B10/03 ,  H04B10/0777 ,  H04B2210/078 ,  H04B2210/08 ,  H04J14/0221

摘要： The present invention relates to an optical level control method for use in an optical transmission system. In the system, a WDM terminal comprises a multiplexing/demultiplexing unit, an amplifier, an up-direction OSC light transmitting/receiving unit, an up-direction multiplexer, an up-direction branching unit, an amplifier and an APR control unit, and a repeater comprises an up-direction branching unit, an OSC light transmitting/receiving unit, an amplifier, an up-direction multiplexer, a down-direction branching unit, an amplifier, a down-direction multiplexer and an APR control unit. In this configuration, a flexible optical output level control in connection with variation in WDM light level, a selective value irrespective of occurrence of an error stemming from the passage of time and avoidable malfunctions are respectively capable. In addition, a trouble retrieving operator can eliminate the possibility of being exposed to the WDM light.

摘要翻译： 本发明涉及光传输系统中使用的光学级别控制方法。 在该系统中，WDM终端包括复用/解复用单元，放大器，上行OSC光发送/接收单元，上行多路复用器，上行分支单元，放大器和APR控制单元，以及 中继器包括上行分支单元，OSC光发射/接收单元，放大器，上行多路复用器，下行分路单元，放大器，下行多路复用器和APR控制单元。 在这种配置中，可以分别与WDM光水平的变化相关的灵活的光输出电平控制，不管由于时间的流逝和可避免的故障是否发生错误的选择值。 此外，故障检索操作员可以消除暴露于WDM光的可能性。

公开(公告)号：US20050094255A1

公开(公告)日：2005-05-05

申请号：US10962726

申请日：2004-10-12

申请人： Thomas Stephens

发明人： Thomas Stephens

IPC分类号： H04B10/17 ,  H04B10/18 ,  H01S3/00

CPC分类号： H04B10/2918 ,  H04B10/2525 ,  H04B10/2916

摘要： Optical systems of the present invention includes power sources that provide dedicated and shared power to a plurality of optical amplification sections. In various embodiments, multiple optical pump sources are provided the include a plurality of optical sources, which supply dedicated optical pump power and shared optical pump power to two or more optical amplification sections. In other embodiments, remote dispersion compensation is performed and Raman amplification is provided to overcome at least a portion of the loss.

公开(公告)号：US20050088725A1

公开(公告)日：2005-04-28

申请号：US10993511

申请日：2004-11-22

申请人： Ryu Yokoyama

发明人： Ryu Yokoyama

IPC分类号： G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/30 ,  H04B10/07 ,  H04B10/29 ,  H04B10/294 ,  H04B10/297 ,  H04J14/00 ,  H04J14/02 ,  H01S3/00

CPC分类号： H04B10/2918 ,  H01S3/30 ,  H04B10/2916

摘要： Flatness of a gain (optical output level) is maintained even when a wavelength division multiplex signal light (WDM signal light) is amplified in an optical amplification utilizing Raman amplification function. The optical amplifier comprises: two (first and second) pumping light sources for Raman amplification for outputting first and second pumping lights; the wavelength multiplexer for Raman amplification for allowing the first and second pumping lights to be incident on optical fiber transmission paths, where the WDM signal light propagates, in the direction opposite to the propagation direction of the signal light. The signal lights are Raman amplified by the both pumping lights. A wavelength of the first pumping light is set such that the gain of the Raman amplified signal light declines in the right direction, and, on the other side, the wavelength of the second pumping light is set such that the gain declines in the left direction. Gradients for showing a relation between the wavelength and the gain in Raman amplification by the first and second pumping lights are made to be in opposite directions from each other. Optical output levels and the wavelengths of the first and second pumping lights are set such that the gains for the signal lights included in the Raman amplified WDM signal light become substantially equal to each other.