公开(公告)号：US20020122625A1

公开(公告)日：2002-09-05

申请号：US09849354

申请日：2001-05-07

Applicant: ALCATEL

Inventor： Laurent Berthelot ,  Isabelle Riant ,  Pierre Sansonetti

IPC: G02B006/34 ,  G02B006/16

CPC classification number: G02B6/278 ,  G02B6/02109 ,  G02B6/02138 ,  G02B6/022 ,  G02B6/29317

Abstract: The invention relates to polarization mode dispersion; writing index variations in a grating written in an optical fiber generates polarization mode dispersion. The invention proposes to compensate this polarization mode dispersion by mechanical curvature of the fiber. The invention provides a simple method of compensating polarization mode dispersion effectively and improving the performance of a grating written in a fiber; it applies in particular to Bragg gratings.

Abstract translation: 本发明涉及偏振模色散; 写在光纤中的光栅中的写入索引变化产生偏振模色散。 本发明提出通过光纤的机械曲率补偿该偏振模色散。 本发明提供了一种有效补偿偏振模色散并提高光纤中写入的光栅性能的简单方法; 它特别适用于布拉格光栅。

公开(公告)号：US20020131740A1

公开(公告)日：2002-09-19

申请号：US10098126

申请日：2002-03-15

Applicant: ALCATEL

Inventor： Dominique Bayart ,  Laurent Berthelot

IPC: G02B006/20

CPC classification number: G02B6/02357 ,  B82Y20/00 ,  G02B6/02019 ,  G02B6/02266 ,  G02B6/02361 ,  H01S3/06708 ,  H01S3/06716

Abstract: An optical fiber with a large effective surface area has holes at points in at least two layers concentric with the fiber of points of a regular matrix. The holes in one layer have the same dimensions and occupy all the available points in the layer. In at least two layers the holes have different dimensions and there is at least one layer with no holes.

Abstract translation: 具有大的有效表面积的光纤在与正规矩阵的点的光纤同心的至少两层的点处具有孔。 一层中的孔具有相同的尺寸并占据层中的所有可用点。 在至少两层中，孔具有不同的尺寸，并且至少有一层没有孔。

公开(公告)号：US20020131741A1

公开(公告)日：2002-09-19

申请号：US10098127

申请日：2002-03-15

Applicant: ALCATEL

Inventor： Dominique Bayart ,  Laurent Berthelot

IPC: G02B006/02 ,  G02B006/20

CPC classification number: G02B6/02357 ,  B82Y20/00 ,  G02B6/02019 ,  G02B6/02266 ,  G02B6/02361 ,  H01S3/06708 ,  H01S3/06716

Abstract: An optical fiber with a large effective surface area has holes at points in at least two layers concentric with the fiber of points of a regular matrix. The holes in one layer have the same dimensions and occupy all the available points in the layer. In at least two layers the holes have different dimensions.

Abstract translation: 具有大的有效表面积的光纤在与正规矩阵的点的光纤同心的至少两层的点处具有孔。 一层中的孔具有相同的尺寸并占据层中的所有可用点。 在至少两层中，孔具有不同的尺寸。

公开(公告)号：US20030128723A1

公开(公告)日：2003-07-10

申请号：US10330331

申请日：2002-12-30

Applicant: ALCATEL

Inventor： Dominique Bayart ,  Laurent Berthelot

IPC: H01S003/30

CPC classification number: H01S3/067 ,  G02B6/02342 ,  G02B6/2856 ,  H01S3/094003 ,  H01S3/094019 ,  H01S3/094069

Abstract: The invention concerns an optical coupler formed of a photonic optical fibre (2) assembled by melting and stretching with at least one multimode optical fibre (4, 6). The phototonic fibre can be used to inject or extract a signal, whereas the multimode fibres can be used to inject pump light. The invention is able to in particular effectively couple multimode pumps in a laser cavity formed by a double cladding fibre. In this case, the optical fibre is not used to inject a signal, but to provide the coupler with a digital opening and a diameter adapted to those of the cavity. The invention is also able to couple one or several multimode pumps in a double cladding fibre. In this case, this makes it possible to retain in the coupler for the signal transmitted through the photonic fibre a mode diameter greater than or equal to the mode diameter at the inlet or outlet of the coupler.

Abstract translation: 本发明涉及由通过用至少一个多模光纤（4,6）熔化和拉伸而组装的光子光纤（2）形成的光耦合器。 光子纤维可用于注入或提取信号，而多模光纤可用于注入泵浦光。 本发明能够特别有效地将多模泵耦合在由双包层光纤形成的激光腔中。 在这种情况下，光纤不用于注入信号，而是为耦合器提供适合于空腔的数字开口和直径。 本发明还能够耦合双包层光纤中的一个或多个多模式泵。 在这种情况下，这使得可以在耦合器中保持通过光子纤维传输的信号的模式直径大于或等于耦合器的入口或出口处的模式直径。

公开(公告)号：US20020131742A1

公开(公告)日：2002-09-19

申请号：US10098128

申请日：2002-03-15

Applicant: ALCATEL

Inventor： Dominique Bayart ,  Laurent Berthelot

IPC: G02B006/20 ,  G02B006/22

CPC classification number: G02B6/02333 ,  B82Y20/00 ,  G02B6/02338 ,  G02B6/02347 ,  H01S3/06708 ,  H01S3/06716

Abstract: The invention proposes a double-clad photonic optical fiber presenting: a fiber core, first cladding surrounding the fiber core, and second cladding surrounding the first cladding; at least one hole in the fiber core; and doping using a rare earth ion, at least in the core of the fiber. The invention makes it possible to obtain a double-clad fiber with good overlap between the signal and a pump injected into the core. It improves amplification efficiency in double-clad optical amplifiers where the signal is injected into the core of the fiber and the pump into the first cladding.

Abstract translation: 本发明提出一种双包层光子光纤，其呈现：纤维芯，围绕纤维芯的第一包层以及围绕第一包层的第二包层; 纤维芯中至少有一个孔; 以及至少在纤维的芯中使用稀土离子进行掺杂。 本发明使得可以获得信号与注入核心的泵之间具有良好重叠的双包层光纤。 它提高了双包层光放大器中的放大效率，其中信号被注入到光纤的芯中，并且泵进入第一包层。