公开(公告)号：EP0918382A2

公开(公告)日：1999-05-26

申请号：EP98309191.9

申请日：1998-11-10

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： DiGiovanni, David John

IPC: H01S3/06 ,  H01S3/094 ,  G02B6/22

CPC classification number: G02B6/03622 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2203/12 ,  C03B2203/30 ,  G02B6/02395 ,  G02B6/03638 ,  G02B6/105 ,  H01S3/06708 ,  H01S3/06729 ,  H01S3/094003

Abstract: A cladding-pumped fiber structure is disclosed in which mode mixing of pump light injected into the fiber is induced by index modulation. In one embodiment, the index modulation is created by a stress-inducing region disposed in the cladding which simultaneously maintains the polarization within the core to produce a polarization-maintaining fiber useful for multi-mode and laser applications.

Abstract translation: 公开了一种包覆泵浦的纤维结构，其中通过折射率调制来引入注入光纤的泵浦光的模式混合。 在一个实施例中，折射率调制由设置在包层中的应力诱导区域产生，其同时维持芯内的偏振，以产生用于多模和激光应用的偏振保持光纤。

公开(公告)号：EP0905834A3

公开(公告)日：1999-04-21

申请号：EP98307020.2

申请日：1998-09-01

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： DiGiovanni, David John ,  Windeler, Robert Scott

IPC: H01S3/06 ,  G02B6/22

CPC classification number: G02B6/02352 ,  C03B37/01205 ,  C03B2203/14 ,  G02B6/021 ,  G02B6/02366 ,  G02B6/02371 ,  G02B6/02395 ,  G02B6/03605 ,  G02B6/03683 ,  H01S3/06708 ,  H01S3/094003 ,  Y02P40/57

Abstract: Optical fiber (10) according to the invention comprises a core (11), with an inner cladding (12) surrounding the core, and an outer cladding surrounding the inner one. The fiber comprises preform-derived glass. The outer cladding comprises a first outer cladding region (13) between the inner cladding region and a second outer cladding region (14). The first outer cladding region is selected to have an effective refractive index less than 1.35, and such that the optical characteristics of the optical fiber are essentially independent of the second outer cladding, and/or such that the fiber is re-coat insensitive. The first outer cladding typically comprises elongate features extending in the fiber axial direction, with a web material joining the inner cladding to the second outer cladding. The elongate features are filled with a low-index material, exemplarily air, but could of course be evacuated. Fibers according to the invention have many uses, e.g., cladding-pumped optical fiber or fiber with a long period grating.

Abstract translation: 根据本发明的光纤（10）包括具有围绕芯的内包层（12）的芯（11），以及围绕内芯的外包层。 该纤维包含预制品衍生的玻璃。 外包层包括在内包层区域和第二外包层区域（14）之间的第一外包层区域（13）。 第一外包层区域被选择为具有小于1.35的有效折射率，并且使得光纤的光学特性基本上独立于第二外包层，和/或使得纤维被重新涂布不敏感。 第一外包层通常包括在光纤轴向方向上延伸的细长特征，网状材料将内包层连接到第二外包层。 细长部件填充有低折射率材料，例如空气，但当然可以被抽空。 根据本发明的光纤具有许多用途，例如具有长周期光栅的包层泵浦光纤或光纤。

公开(公告)号：EP0905834A2

公开(公告)日：1999-03-31

申请号：EP98307020.2

申请日：1998-09-01

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： DiGiovanni, David John ,  Windeler, Robert Scott

IPC: H01S3/06 ,  G02B6/22

CPC classification number: G02B6/02352 ,  C03B37/01205 ,  C03B2203/14 ,  G02B6/021 ,  G02B6/02366 ,  G02B6/02371 ,  G02B6/02395 ,  G02B6/03605 ,  G02B6/03683 ,  H01S3/06708 ,  H01S3/094003 ,  Y02P40/57

Abstract: Optical fiber (10) according to the invention comprises a core (11), with an inner cladding (12) surrounding the core, and an outer cladding surrounding the inner one. The fiber comprises preform-derived glass. The outer cladding comprises a first outer cladding region (13) between the inner cladding region and a second outer cladding region (14). The first outer cladding region is selected to have an effective refractive index less than 1.35, and such that the optical characteristics of the optical fiber are essentially independent of the second outer cladding, and/or such that the fiber is re-coat insensitive. The first outer cladding typically comprises elongate features extending in the fiber axial direction, with a web material joining the inner cladding to the second outer cladding. The elongate features are filled with a low-index material, exemplarily air, but could of course be evacuated. Fibers according to the invention have many uses, e.g., cladding-pumped optical fiber or fiber with a long period grating.

Abstract translation: 根据本发明的光纤（10）包括具有围绕芯的内包层（12）的芯（11）和围绕内芯的外包层。 纤维包括预制件衍生的玻璃。 外包层包括在内包层区域和第二外包层区域（14）之间的第一外包层区域（41,42,43）。 第一外包层区被选择为具有小于1.35的有效折射率，并且使得光纤的光学特性基本上独立于第二外包层和/或使得纤维重新涂层不敏感。 第一外包层通常包括在纤维轴向方向上延伸的细长特征（42,43），其中腹板材料（41）将内包层连接到第二外包层。 细长特征填充有低折射率材料，示例性地为空气，但当然可以被排空。 根据本发明的纤维具有许多用途，例如具有长周期光栅的包层泵浦光纤或光纤。

公开(公告)号：EP0896404A1

公开(公告)日：1999-02-10

申请号：EP98306019.5

申请日：1998-07-28

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： DiGiovanni, David John

IPC: H01S3/06 ,  C03C13/04

CPC classification number: C03C3/06 ,  C03B2203/23 ,  C03C13/045 ,  C03C2201/28 ,  C03C2201/31 ,  C03C2201/36 ,  H01S3/06708 ,  H01S3/06729 ,  H01S3/094003 ,  H01S3/094007

Abstract: The specification describes fiber laser devices with cores containing aluminum in which the composition of the core (21) is modified to minimize the core Δ, thereby allowing a larger core diameter, and a reduction in the fiber laser length by a factor equal to the square of the diameter difference. This result is achieved by compensation doping the core (21) with phosphorus to offset the index-modifying contribution of aluminum.

Abstract translation: 本说明书描述了具有包含铝的芯的光纤激光器件，其中芯（21）的组成被修改以使芯DELTA最小化，从而允许更大的芯直径，并且光纤激光器长度减小等于正方形 的直径差。 该结果通过用磷补偿芯（21）来补偿铝的指数变化贡献来实现。

公开(公告)号：EP0803944A2

公开(公告)日：1997-10-29

申请号：EP97302411.0

申请日：1997-04-08

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： DiGiovanni, David John ,  Womack, Kim Willard ,  Park, Namkyoo ,  Wysocki, Paul Francis

IPC: H01S3/06

CPC classification number: H01S3/06758 ,  H01S3/1608 ,  H01S3/1618 ,  H01S2301/04

Abstract: Multistage Er-doped fiber amplifiers (EDFAs) (60) are disclosed. They comprise a first stage (63) that comprises Er and Al, and further comprise a second stage (67) that comprises Er and a further rare earth element, exemplary Yb. Such multistage EDFAs can have advantageous characteristics e.g., a relatively wide flat gain region (e.g. 1544-1562 nm), and relatively high output power, without significant degradation of the noise figure. Exemplary, the amplifiers are used in WDM systems and in analog CATV systems (110).

Abstract translation: 公开了多级掺铒光纤放大器（EDFA）（60）。 它们包括包含Er和Al的第一级（63），并且还包括包含Er和另外的稀土元素（示例性Yb）的第二级（67）。 这样的多级EDFA可以具有有利的特性，例如相对宽的平坦增益区域（例如1544-1562nm）和相对较高的输出功率，而不会使噪声系数显着降低。 示例性地，放大器用于WDM系统和模拟CATV系统（110）。