公开(公告)号：EP1022870A2

公开(公告)日：2000-07-26

申请号：EP00300212.8

申请日：2000-01-13

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Stenz, Andrew John ,  Walker, Kenneth Lee

IPC: H04B10/17 ,  H01S3/30

CPC classification number: H04B10/2916 ,  H01S3/094073 ,  H01S3/094096 ,  H01S3/302

Abstract: In accordance with the invention an optical fiber communication system comprising a source of optical signals and an optical fiber transmission line is provided with one or more multiple-order distributed Raman effect amplifiers downstream of the source for amplifying the transmitted signals. As compared with a communication system using conventional first order Raman amplifiers, multiple-order amplifier systems can have reduced noise, longer fiber span lengths and reduced nonlinearities. In a preferred embodiment the system uses signal wavelengths in the range 1530-1570 nm, first order Raman pumping at 1430-1475 nm and second order pumping at about 1345 nm. Advantageously, the second order pump light is copropagating with the signal light and the first order pump is counterpropagating with the signal.

Abstract translation: 根据本发明，包括光信号源和光纤传输线的光纤通信系统在源的下游设置有一个或多个多级分布拉曼效应放大器，用于放大发射信号。 与使用常规一阶拉曼放大器的通信系统相比，多级放大器系统可以具有降低的噪声，更长的光纤跨距长度和减小的非线性。 在优选实施例中，该系统使用1530-1570nm范围内的信号波长，1430-1475nm处的一阶拉曼泵浦和在约1345nm处的二次泵浦。 有利地，二阶泵浦光与信号光共同传播，并且一阶泵与信号相反地传播。

公开(公告)号：EP0938172A3

公开(公告)日：1999-09-22

申请号：EP99301144.4

申请日：1999-02-16

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： LeGrange, Jane Deborah ,  Walker, Kenneth Lee ,  Reed, William Alfred

IPC: H01S3/30

CPC classification number: H04B10/2916 ,  H01S3/0675 ,  H01S3/08086 ,  H01S3/302

Abstract: The performance of optical fiber Raman devices can be increased by substitution of a broadband reflector (typically a multilayer dielectric mirror) for some of the narrowband reflectors (typically fiber Bragg gratings) that are conventionally used to define the optical cavities of the device. The device exemplarily is a Raman laser or amplifier, and in preferred embodiments a broadband reflector reflects all the Stokesshifted wavelengths, such that the cavities are defined by the single broadband reflector and by a multiplicity of appropriately selected narrowband reflectors. Optionally the broadband reflector also serves to reflect the pump radiation.

Abstract translation: 光纤拉曼器件的性能可以通过替代通常用于限定器件的光学腔的一些窄带反射器（通常为光纤布拉格光栅）的宽带反射器（通常为多层介电反射镜）来提高。 该装置示例性地是拉曼激光器或放大器，并且在优选实施例中，宽带反射器反射所有Stokesshift波长，使得空腔由单个宽带反射器和多个适当选择的窄带反射器限定。 可选地，宽带反射器还用于反射泵辐射。

公开(公告)号：EP0789433B1

公开(公告)日：1999-04-28

申请号：EP97300696.8

申请日：1997-02-04

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Grubb, Stephen Gregory ,  Walker, Kenneth Lee ,  Stentz, Andrew John

IPC: H01S3/30

CPC classification number: H01S3/302 ,  Y10S372/703

公开(公告)号：EP0887955A2

公开(公告)日：1998-12-30

申请号：EP98304771.3

申请日：1998-06-17

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Walker, Kenneth Lee ,  Willems, Frederik Willem

IPC: H04B10/17

CPC classification number: H04B10/2912 ,  H04B10/291 ,  H04B10/2918 ,  H04B10/2939 ,  H04B10/296

Abstract: In an optically amplified multi-wavelength optical fiber communication system (e.g., 80), deleterious effects due to channel addition/removal can be reduced or avoided if the optical amplifiers (80) are "overpumped", that is to say, the system is selected such that at least 70%, preferably 90% or more, of the pump power that is introduced into the amplifier fiber is unabsorbed in the amplifier fiber.

Abstract translation: 在光放大的多波长光纤通信系统（例如，80）中，如果光放大器（80）“过度抽取”，则可以减少或避免由于信道添加/去除引起的有害影响，也就是说，系统是 被选择为使得放入到放大器光纤中的泵浦功率的至少70％，优选地为90％或更多，在放大器光纤中未被吸收。

公开(公告)号：EP0884813A1

公开(公告)日：1998-12-16

申请号：EP98304329.0

申请日：1998-06-02

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： LeGrange, Jane Deborah ,  Walker, Kenneth Lee

IPC: H01S3/06 ,  G02B6/26 ,  H04B10/17

CPC classification number: G02B6/262 ,  H01S3/06704 ,  H01S3/06708 ,  H01S3/06729 ,  H01S3/094003 ,  H01S3/094007

Abstract: An optical communication system comprising a light source, a cladding pumped fiber laser (10) having a pump cladding (14), an optical fiber (20) attached to the cladding pumped fiber laser, the optical fiber having a cladding (24) and a protective coating (26). and an expedient that prevents substantial damage to the protective coating of the optical fiber upon transmission of at least 1 watt of residual light out of the pump cladding. Such an expedient may be the material of the protective coating, which may comprise a metal, such as gold, aluminium or copper, or a high refractive-index polymer such as a polyimide, polyetheretherketone, polytetrafluoroethene or an epoxide. Alternatively, or in addition, the expedient may comprise an article disposed at the attachment of the laser to the fiber and capable of conducting and dissipating heat produced by the residual light, for example, a metal block having a groove that supports the laser, the fiber or both.

Abstract translation: 一种光通信系统，包括光源，具有泵浦覆层（14）的包层泵浦光纤激光器（10），附着到所述包层泵浦光纤激光器的光纤（20），所述光纤具有包层（24）和 保护涂层（26）。 并且在将至少1瓦的残余光透射出泵浦包层之后，防止对光纤的保护涂层的实质损坏。 这样的方法可以是保护涂层的材料，其可以包括金属，例如金，铝或铜，或高折射率聚合物，例如聚酰亚胺，聚醚醚酮，聚四氟乙烯或环氧化物。 或者或另外，该方法可以包括设置在激光附着到光纤并且能够传导和散发由残余光产生的热的物品，例如具有支撑激光器的凹槽的金属块， 纤维或两者。

公开(公告)号：EP0829741A2

公开(公告)日：1998-03-18

申请号：EP97306781.2

申请日：1997-09-02

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Strasser, Thomas A. ,  Walker, Kenneth Lee ,  Vengsarkar, Ashish Madhukar

IPC: G02B6/34 ,  H04J14/04

CPC classification number: G02B6/29319 ,  G02B6/14 ,  G02B6/29383

Abstract: The optical waveguide system (100) comprises a mode discriminating coupler (10) and reflective mode coupling means (e.g., 34 and 35). These components can be combined in a variety of ways to perform a variety of functions. Among them are drop multiplex devices (30), add multiplex devices (60), add/drop multiplex devices (70), and power combiners. The device combinations can have low loss as well as high reliability, the latter due to the robust structure of the devices.

Abstract translation: 光波导系统，包括波长为λi，其中至少利用所述第一EM辐射利用装置的第一电磁（EM）辐射源，光波导路径并光学地连接的源向利用装置，在DASS模模式改性甄别 耦合器是一个四端口耦合器确实包括由渐逝场耦合耦合到第二多模光波导的第一多模光波导从所述第一多模光波导做异。 被选择的检查的渐逝场耦合做波长为λI的在基本空间模式中的EM辐射传播通过模式对两个多模光波导的一个鉴别耦合器，和波长为λi的一个高阶空间模式的EM辐射被耦合 从一个多模光波导到另一个。 反射模式耦合装置包括多模光波导，包括具有节距的λ1微米和闪耀角度theta> 3°]的闪耀折射率光栅的反射模耦合光栅的长度，与拉姆达和θ选择的搜索做了光栅反射 作为波长为λ的辐射i和高阶空间模式，进一步选择的波长的λI的基本空间模式中的辐射并光栅并不反映波长的λj的辐射，其中，这两个拉姆达i和拉姆达j是一个光谱范围内 〜Dlambda I =波长/ 100。 所述系统进一步包括波长为λj的第二EM辐射，耦合到光波导路径的源，并且该装置组合被选择为解复用或复用的第一和第二电磁辐射。 用波长为λk的第三电磁辐射的源，所述装置的组合是另外一个以上选定复用光波导路径上的第一和第三电磁辐射，和设备的组合被选择为第一和第二EM辐射光波导路径上结合 ，与使用两个第一和第二EM辐射的利用装置。

公开(公告)号：EP0810749A2

公开(公告)日：1997-12-03

申请号：EP97303401.0

申请日：1997-05-19

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Nelson, Katherine Theresa ,  Walker, Kenneth Lee ,  Reed, William Alfred ,  White Ian Arthur

IPC: H04B10/158

CPC classification number: G02B6/03627 ,  G02B6/02 ,  G02B6/03611 ,  G02B6/266 ,  G02B6/29368 ,  G02B6/4246

Abstract: An optical fiber communication system (40) according to the invention comprises an optical fiber filter that can be manufactured at low cost and that can be conveniently incorporated into the system, substantially like a conventional fiber jumper. The filter comprises a length L of axially uniform optical fiber selected to have substantially no loss (e.g., 1 , and to have relatively high loss (e.g.,> 20dB) at a wavelength λ 2 . The length L will typically be less than 100 m. In one embodiment the optical fiber is a single mode optical fiber at λ 1 (e.g., 1.3µm) that does not have a guided mode at λ 2 (e.g., 1.55µm). In another embodiment the fiber contains a dopant that does substantially not absorb radiation of wavelength λ 1 , but substantially absorbs at λ 2 . In the second embodiment, λ 1 can be greater than λ 2 . Fiber filters according to the invention can be advantageously used in a variety of communication systems, and exemplary systems are disclosed.

公开(公告)号：EP0789433A1

公开(公告)日：1997-08-13

申请号：EP97300696.8

申请日：1997-02-04

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Grubb, Stephen Gregory ,  Walker, Kenneth Lee ,  Stentz, Andrew John

IPC: H01S3/30

CPC classification number: H01S3/302 ,  Y10S372/703

Abstract: A low noise optical fiber Raman amplifier with integral Raman laser (FRA) is disclosed. The FRA typically comprises a fiber ring with at least two amplifier stages (21, 22), with strictly counter-propagating pump radiation. Relatively short wavelength (e.g., 1060 nm) pump power is provided to the Raman laser portion of the fiber ring. Appropriately selected and placed Bragg gratings (e.g., 204) provide one or more optical cavities in the fiber ring, such that the input pump radiation is converted to the desired amplifier pump radiation (e.g., 1240 nm, suitable for amplification of 1310 nm signal radiation). The FRA can, for instance, advantageously serve as power amplifier in digital or analog fiber communication systems, or it can serve as pre-amplifier or in-line amplifier.

Abstract translation: 该装置包括连接输入端口和输出端口的二氧化硅基放大器光纤的光纤路径和经由WDM（13）输入的泵浦辐射。 将泵浦辐射以小于信号波长λs的波长λp引入放大器光纤，使得其在光纤中沿着上游方向在输入端口传播。 放大器光纤具有至少两段光纤（L1，L2），两条长度之和至少为200m。 光隔离器设置在两个长度之间，使得波长λs从第二长度到第一长度的辐射通过被阻挡。 泵路径自身关闭并且包括放大器光纤的一部分，所选择的路径使得初始泵浦辐射可以在其中循环。 可以将波长λp“'λp的第二泵浦辐射引入泵浦路径中，并且布拉格光栅阻止其通过。 选定和放置的布拉格光栅在光纤环中提供一个或多个光学空腔，使得输入泵浦辐射被转换成期望的放大器泵浦辐射。 波长λ可以是1310nm，λp 1240nm，λp'' 1060nm。