公开(公告)号：US20160261349A1

公开(公告)日：2016-09-08

申请号：US15060973

申请日：2016-03-04

Applicant: Xtera Communications, Inc.

Inventor： Do-Il Chang ,  Philippe Andre Perrier ,  Herve A. Fevrier

IPC: H04B10/564

CPC classification number: H04B10/564 ,  H01S3/06758 ,  H01S3/094 ,  H01S3/094061 ,  H01S3/094096 ,  H01S3/302 ,  H04B10/2916

Abstract: An apparatus includes a remote optically pumped amplifier (ROPA). The ROPA includes a bypass filter configured to receive an optical signal and first pump power and to separate the optical signal and the first pump power. The ROPA also includes an amplifier configured to receive the optical signal from the bypass filter and to amplify the optical signal. The ROPA further includes an optical combiner/multiplexer configured to receive the first pump power from the bypass filter, receive at least second and third pump powers, combine at least two of the first, second and third pump powers, and provide different pump powers or combinations of pump powers to different locations within the ROPA to feed the amplifier.

Abstract translation: 一种装置包括远程光泵浦放大器（ROPA）。 ROPA包括旁路滤波器，其被配置为接收光信号和第一泵浦功率并且分离光信号和第一泵功率。 ROPA还包括放大器，其被配置为从旁路滤波器接收光信号并放大光信号。 ROPA还包括光学组合器/多路复用器，其被配置为从旁路滤波器接收第一泵浦功率，接收至少第二和第三泵浦功率，组合第一，第二和第三泵浦功率中的至少两个，并提供不同的泵浦功率或 将泵浦功率组合到ROPA内的不同位置以馈送放大器。

公开(公告)号：US20140199083A1

公开(公告)日：2014-07-17

申请号：US13742076

申请日：2013-01-15

Applicant: XTERA COMMUNICATIONS, INC.

Inventor： Kevin Willoughby ,  John Durban ,  Adam Arnold

IPC: H04B10/29

CPC classification number: H04B10/29 ,  G02B6/4448 ,  H04J14/02 ,  Y10T29/49826

Abstract: A repeater amplifier assembly that includes at least two chassis containing optics and electronics. The chassis are connected with a size-adjustment mechanism that can adjust a size of the repeater amplifier assembly by reversibly adjusting the positions of the chassis with respect to each other. To insert the repeater amplifier assembly into a repeater housing, the repeater amplifier assembly is accessed in a contracted position. The amplifier is inserted into the housing, and then a control of the size adjustment mechanism is actuated to urge the chassis outwards until the chassis push against the repeater housing. To remove the repeater amplifier assembly from the repeater housing, the control is actuated to cause the size adjustment mechanism to pull the chassis inwards with respect to each other until the chassis no longer push against the repeater housing. The repeater amplifier assembly may then be freely removed from the repeater housing.

Abstract translation: 一种中继器放大器组件，其包括至少两个包含光学器件和电子器件的机架。 底盘与尺寸调节机构连接，该机构可以通过可逆地调节底盘相对于彼此的位置来调整中继器放大器组件的尺寸。 为了将中继器放大器组件插入中继器外壳中，中继器放大器组件在收缩位置被访问。 放大器被插入壳体中，然后致动尺寸调节机构的控制以向外推动底盘，直到底盘推靠在中继器壳体上。 为了从中继器壳体移除中继器放大器组件，控制器被致动以使得尺寸调节机构相对于彼此向内拉动底盘，直到机架不再推靠在中继器壳体上。 中继器放大器组件然后可以自由地从中继器壳体移除。

公开(公告)号：US20030095324A1

公开(公告)日：2003-05-22

申请号：US10293703

申请日：2002-11-12

Applicant: Xtera Communications, Inc., a Delaware corporation

Inventor： Mohammed N. Islam ,  Carl A. Dewilde ,  Michael J. Freeman

IPC: H04B010/12

CPC classification number: H04B10/2935 ,  H04B10/2916 ,  H04B2210/003

Abstract: A multi-stage Raman amplifier includes a first Raman amplifier stage having a first sloped gain profile operable to amplify a plurality of signal wavelengths, and a second Raman amplifier stage having a second sloped gain profile operable to amplify at least most of the plurality of signal wavelengths after those wavelengths have been amplified by the first stage. The second sloped gain profile is approximately complementary slope to the slope of the first sloped gain profile. The combined effect of the first and second Raman stages contributes to an approximately flat overall gain profile over the plurality of signal wavelengths.

公开(公告)号：US09838136B2

公开(公告)日：2017-12-05

申请号：US15060973

申请日：2016-03-04

Applicant: Xtera Communications, Inc.

Inventor： Do-Il Chang ,  Philippe Andre Perrier ,  Herve A. Fevrier

IPC: H04J14/00 ,  H04B10/564 ,  H01S3/094 ,  H04B10/291

CPC classification number: H04B10/564 ,  H01S3/06758 ,  H01S3/094 ,  H01S3/094061 ,  H01S3/094096 ,  H01S3/302 ,  H04B10/2916

Abstract: An apparatus includes a remote optically pumped amplifier (ROPA). The ROPA includes a bypass filter configured to receive an optical signal and first pump power and to separate the optical signal and the first pump power. The ROPA also includes an amplifier configured to receive the optical signal from the bypass filter and to amplify the optical signal. The ROPA further includes an optical combiner/multiplexer configured to receive the first pump power from the bypass filter, receive at least second and third pump powers, combine at least two of the first, second and third pump powers, and provide different pump powers or combinations of pump powers to different locations within the ROPA to feed the amplifier.

公开(公告)号：US20150155943A1

公开(公告)日：2015-06-04

申请号：US14621183

申请日：2015-02-12

Applicant: Xtera Communications, Inc.

Inventor： Kevin Willoughby ,  John Durban ,  Adam Arnold

IPC: H04B10/29 ,  H04J14/02 ,  G02B6/44

CPC classification number: H04B10/29 ,  G02B6/4448 ,  H04J14/02 ,  Y10T29/49826

Abstract: A repeater amplifier assembly that includes at least two chassis containing optics and electronics. The chassis are connected with a size-adjustment mechanism that can adjust a size of the repeater amplifier assembly by reversibly adjusting the positions of the chassis with respect to each other. To insert the repeater amplifier assembly into a repeater housing, the repeater amplifier assembly is accessed in a contracted position. The amplifier is inserted into the housing, and then a control of the size adjustment mechanism is actuated to urge the chassis outwards until the chassis push against the repeater housing. To remove the repeater amplifier assembly from the repeater housing, the control is actuated to cause the size adjustment mechanism to pull the chassis inwards with respect to each other until the chassis no longer push against the repeater housing. The repeater amplifier assembly may then be freely removed from the repeater housing.

Abstract translation: 一种中继器放大器组件，其包括至少两个包含光学器件和电子器件的机架。 底盘与尺寸调节机构连接，该机构可以通过可逆地调整底盘相对于彼此的位置来调整中继器放大器组件的尺寸。 为了将中继器放大器组件插入中继器外壳中，中继器放大器组件在收缩位置被访问。 放大器被插入壳体中，然后致动尺寸调节机构的控制以向外推动底盘，直到底盘推靠在中继器壳体上。 为了从中继器壳体移除中继器放大器组件，控制器被致动以使得尺寸调节机构相对于彼此向内拉动底盘，直到机架不再推靠在中继器壳体上。 中继器放大器组件然后可以自由地从中继器壳体移除。

公开(公告)号：US20150033294A1

公开(公告)日：2015-01-29

申请号：US14341323

申请日：2014-07-25

Applicant: Xtera Communications, Inc.

Inventor： HERVE FEVRIER

IPC: H04L12/26 ,  H04L12/24 ,  H04L29/06

CPC classification number: H04L41/28 ,  H04L41/04 ,  H04L43/04 ,  H04L63/08

Abstract: Network management of a telecommunications network. An external system, such as a cloud computing environment, receives network element data from the network management system of the telecommunications network over a channel that may be encrypted. The network element data are parameter samples that the network management system has collected from one or more network elements within the telecommunications network. The external system then processes at least some of the received network element data. The external system might also receive network element data from other network management systems of other telecommunications networks also. Furthermore, the external system might also have external information not received from the network management system. The external system may perform processing on all of this information in conjunction with the received network element data in order to perform sophisticated analytics.

Abstract translation: 电信网络的网络管理。 诸如云计算环境的外部系统通过可能被加密的信道从电信网络的网络管理系统接收网元数据。 网元数据是网络管理系统从电信网络内的一个或多个网元收集的参数样本。 然后，外部系统处理所接收的网络元素数据中的至少一些。 外部系统也可能从其他电信网络的其他网络管理系统接收网络元素数据。 此外，外部系统也可能具有从网络管理系统未收到的外部信息。 外部系统可以结合所接收的网络元素数据对所有这些信息执行处理，以便执行复杂的分析。

公开(公告)号：US20140268308A1

公开(公告)日：2014-09-18

申请号：US14200863

申请日：2014-03-07

Applicant: Xtera Communications, Inc.

Inventor： WAYNE S. PELOUCH ,  DO-IL CHANG ,  STEPHEN MICHAEL WEBB

IPC: H01S3/30

CPC classification number: H01S3/302 ,  H01S3/022 ,  H01S3/06758 ,  H01S3/094061 ,  H01S3/1312 ,  H01S3/1608 ,  H01S3/2375 ,  H01S2301/04 ,  H04B10/2916 ,  H04B10/2942

Abstract: The adjustment of tilt in an optical signal path of a repeater. The repeater includes an optical pump that optically powers a rare-Earth doped fiber amplifier, which amplifies the optical signal. The optical signal path also includes Raman gain stage implemented in a previous optical fiber span in the optical signal path, and which contributes tilt with respect to wavelength. Adjusting the Raman gain and/or the rare-Earth doped gain also adjusts the combined tilt contributed by these gain stages. However, the rare-Earth doped gain operates at least partially in the saturated regime, thereby stabilizing the gain at the output of the rare-Earth doped amplifier. Thus tilt control may be employed by adjusting optical pump power with reduced effect on overall gain.

Abstract translation: 中继器光信号路径中的倾斜调整。 中继器包括光泵，其对放射光信号的稀土掺杂光纤放大器进行光学供电。 光信号路径还包括在光信号路径中的先前光纤跨度中实现的拉曼增益级，并且其有助于相对于波长的倾斜。 调整拉曼增益和/或稀土掺杂增益还可以调整由这些增益级贡献的组合倾斜。 然而，稀土掺杂增益至少部分地在饱和状态下工作，从而稳定了稀土掺杂放大器输出处的增益。 因此，可以通过调整光泵功率对整体增益的影响来采用倾斜控制。

公开(公告)号：US20030058899A1

公开(公告)日：2003-03-27

申请号：US10253224

申请日：2002-09-23

Applicant: Xtera Communications, Inc., a Delaware corporation

Inventor： Mohammed N. Islam

IPC: H01S003/30

CPC classification number: H01S5/4025 ,  H01S3/094003 ,  H01S3/094061 ,  H01S3/094096 ,  H01S3/302 ,  H01S5/4012 ,  H01S5/4087

Abstract: This invention describes new developments in Sagnac Raman amplifiers and cascade lasers to improve their performance. The Raman amplifier bandwidth is broadened by using a broadband pump or by combining a cladding-pumped fiber laser with the Sagnac Raman cavity. The broader bandwidth is also obtained by eliminating the need for polarization controllers in the Sagnac cavity by using an all polarization maintaining configuration, or at least using loop mirrors that maintain polarization. The polarization maintaining cavities have the added benefit of being environmentally stable and appropriate for turn-key operation. The noise arising from sources such as double Rayleigh scattering is reduced by using the Sagnac cavity in combination with a polarization diversity pumping scheme, where the pump is split along two axes of the fiber. This also leads to gain for the signal that is independent of the signal polarization. Finally, a two-wavelength amplifier for 1310 nm and 1550 nm can be implemented by using a parallel combination of Raman amplifiers with shared pump lasers or by combining Raman amplifiers with erbium-doped fiber amplifiers. Combinations of the above improvements can be used advantageously to meet specifications for broad bandwidth, polarization independence, noise performance and multi-wavelength operation.

Abstract translation: 本发明描述了Sagnac拉曼放大器和级联激光器的新发展，以提高其性能。 通过使用宽带泵或通过将包层泵浦光纤激光器与Sagnac拉曼腔组合来拉曼拉曼放大器带宽。 通过使用全极化保持配置或者至少使用保持极化的环路镜来消除对Sagnac腔中的偏振控制器的需要，也可获得更宽的带宽。 偏振维持腔具有环境稳定并适合于交钥匙操作的附加益处。 通过使用Sagnac腔室与极化分集泵浦方案相结合的方式减少了诸如双瑞利散射等来源的噪声，其中泵沿光纤的两个轴线分裂。 这也导致独立于信号极化的信号的增益。 最后，通过使用拉曼放大器与共享泵浦激光器的并联组合或通过将拉曼放大器与掺铒光纤放大器组合，可以实现1310 nm和1550 nm的双波长放大器。 上述改进的组合可以有利地用于满足宽带宽，极化独立性，噪声性能和多波长操作的规格。

公开(公告)号：US09985727B2

公开(公告)日：2018-05-29

申请号：US14697039

申请日：2015-04-27

Applicant: Xtera Communications, Inc.

Inventor： Wayne S. Pelouch ,  Stephen Michael Webb ,  John G. Ellison

IPC: H04B10/079 ,  H04B10/25 ,  H04J14/02 ,  H04B10/077 ,  H04B10/291 ,  H01S3/067 ,  H01S3/13 ,  H01S3/094 ,  H01S3/30

CPC classification number: H04B10/07953 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/1301 ,  H01S3/302 ,  H04B10/0777 ,  H04B10/2504 ,  H04B10/2916 ,  H04J14/02

Abstract: An optical communication link that includes two nodes interconnected by an optical channel that comprises optical fiber(s), and that is used to communicate an optical signal comprising multiple optical signal wavelengths. The first node provides an optical signal onto the optical channel towards the second node, or receives an optical signal from the optical channel from the second node. A Raman pump provides Raman pump power into the optical fiber of the optical channel to thereby perform Raman amplification of the optical signal in the optical fiber. The second node determines a quality measurement of at least of optical wavelength signals transmitted by the first node to the second node. The second node also transmits information from the quality measurement back to the first node. A controller at the first node controls at least one parameter of the Raman pump in response to this transmitted information.

公开(公告)号：US09831943B2

公开(公告)日：2017-11-28

申请号：US14109735

申请日：2013-12-17

Applicant: Xtera Communications, Inc.

Inventor： Stephen Michael Webb ,  Wayne S. Pelouch ,  Do-Il Chang ,  John G. Ellison

IPC: H04B10/071 ,  H04B10/80 ,  H04B10/073 ,  G01J3/44 ,  H01S3/09 ,  H04B10/077

CPC classification number: H04B10/071 ,  H04B10/0731 ,  H04B10/0777 ,  H04B10/80

Abstract: A submarine optical repeater includes a submarine amplifier module, which further includes a pumping laser module and an optical detector module. The pumping laser module generates optical amplifications within an optical cable, and, in the case of a fault in the optical cable, the optical detector module detects at least one characteristic of an optical signal caused by the fault in the optical cable. This configuration then identifies a particular signal characteristic that indicates a fault within the optical cable.