公开(公告)号：US20020186944A1

公开(公告)日：2002-12-12

申请号：US10140201

申请日：2002-05-08

Applicant: ALCATEL

Inventor： Isabelle Riant ,  Carlos De Barros

IPC: G02B006/22 ,  G02B006/16 ,  G02B006/34 ,  G02B006/26

CPC classification number: G02B6/02119 ,  G02B6/02085 ,  G02B6/021 ,  G02B6/03627 ,  G02B6/03694

Abstract: The invention is related to an optical waveguide device comprising a length of fiber including a monomode core having a refraction index of nco, a photosensitivity of Sco and a radius Rco and an internal cladding with an refractive index of ncl, a photosensitivity of Scl and a radius of Rcl, and a outer cladding surrounding the internal cladding with an refractive index that allows the existence of multiple cladding modes, and a slanted Bragg grating with an effective tilt angle of null written in core and inner cladding of the optical waveguide, coupling the fundamental mode into several cladding modes p1 where Rconull2.5 Rco and the SconullScl

Abstract translation: 本发明涉及一种光波导器件，该光波导器件包括具有折射率nco，Sco的光敏度和半径Rco的折射率nco，折射率为ncl的内部包层，Sc1的光敏度和 Rcl的半径，以及包围内部包层的外部包层，其折射率允许存在多个包层模式;以及斜面布拉格光栅，其具有写入光波导的芯和内包层中的θ的有效倾斜角，将 基本模式转化成若干包层模式p1，其中Rco <= 2.5Rco和Sco <= Scl

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：US20030202745A1

公开(公告)日：2003-10-30

申请号：US10423980

申请日：2003-04-28

Applicant: ALCATEL.

Inventor： Marianne Molina ,  Carlos De Barros ,  Isabelle Riant

IPC: G02B006/34

CPC classification number: G02B6/02138 ,  G02B6/02085 ,  G02B6/12007 ,  G02B6/124 ,  G02B6/266

Abstract: An optical filter (20) composed of a concatenation of elementary filters (10) consisting of chirped slanted Bragg gratings written on a continuous portion of an optical waveguide, characterised in that the various gratings in the concatenation have the same angle, identical lengths and a linear chirp.

Abstract translation: 一种由写入光波导的连续部分的由啁啾的倾斜布拉格光栅组成的基本滤波器（10）的级联构成的滤光器（20），其特征在于，级联中的各种光栅具有相同的角度，相同的长度和 线性啁啾

公开(公告)号：US20030035627A1

公开(公告)日：2003-02-20

申请号：US10217426

申请日：2002-08-14

Applicant: ALCATEL

Inventor： Hedi Labidi ,  Carlos De Barros ,  Isabelle Riant

IPC: G02B006/34

CPC classification number: G02B6/02109 ,  G02B6/0208 ,  G02B6/02133

Abstract: The present invention relates to the field of optical fiber telecommunications. More specifically, the subject of the invention is a slanted Bragg grating optical fiber and a process for manufacturing such a fiber. The slanted Bragg grating optical fiber of longitudinal axis Z has slanted Bragg gratings photowritten in said fiber and having refractive index modulations along said axis Z, inclined at a same writing angle with respect to a normal plane to said axis Z and defining planes called writing planes forming the same angle than the writing angle with said normal plane, each writing plane forming with others writing planes specific angles called angles of rotation about said axis Z.

Abstract translation: 本发明涉及光纤通信领域。 更具体地，本发明的主题是倾斜的布拉格光栅光纤和用于制造这种光纤的方法。 纵向轴线Z的倾斜布拉格光栅光纤具有在所述光纤中照相印刷并具有沿所述轴线Z的折射率调制的倾斜布拉格光栅，相对于所述轴线Z的法线平面以相同的书写角度倾斜，并且限定称为写入平面的平面 形成与所述普通平面的写入角度相同的角度，每个书写平面与其他书写平面形成称为围绕所述轴线Z的旋转角度的旋转角度。

公开(公告)号：US20040258357A1

公开(公告)日：2004-12-23

申请号：US10869882

申请日：2004-06-18

Applicant: ALCATEL

Inventor： Carlos De Barros ,  Marianne Molina ,  Isabelle Riant

IPC: G02B006/34

CPC classification number: G02B6/02085 ,  G02B6/02095 ,  G02B6/14 ,  G02B6/29317

Abstract: An optical filter comprises a first mode converter converting an incident light signal propagating in an incident mode into a signal propagating in a propagation mode LPnm of order higher than that of said incident mode; a second mode converter converting the light signal of higher propagation order LPnm into a signal propagating in the incident propagation mode; and a slanted Bragg grating disposed between said first and second mode converters and adapted to couple the higher propagation order light signal LPnm in back-propagation into said incident mode. The filter is applicable to flattening gain and to multiplexing DWDM signals.

Abstract translation: 光滤波器包括：将入射模式传播的入射光信号转换为以比所述入射模式高的传播模式LPnm传播的信号的第一模式转换器; 第二模式转换器将较高传播阶数LPnm的光信号转换为在入射传播模式中传播的信号; 以及设置在所述第一和第二模式转换器之间并适于将反向传播中的较高传播级光信号LPnm耦合到所述入射模式中的倾斜布拉格光栅。 滤波器适用于平坦化增益和复用DWDM信号。

公开(公告)号：US20030035625A1

公开(公告)日：2003-02-20

申请号：US10192551

申请日：2002-07-11

Applicant: ALCATEL

Inventor： Isabelle Riant ,  Veronique Verdrager

IPC: G02B006/34 ,  G02B006/26

CPC classification number: G02B6/2932 ,  G02B6/29394 ,  H04B10/2519

Abstract: The present invention relates to a chromatic dispersion compensator comprising a Bragg grating with quadratically varying pitch, said Bragg grating having a group time response with a quadratic component Q1 and a linear component L1, and the compensator further comprising a Bragg grating with linearly varying pitch, said Bragg grating with linearly varying pitch having a group time response with a linear component L2, and said linear components L1 and L2 being opposite in sign.

Abstract translation: 本发明涉及包括具有二次变化间距的布拉格光栅的色散补偿器，所述布拉格光栅具有具有二次分量Q1和线性分量L1的组时间响应，并且补偿器还包括具有线性变化间距的布拉格光栅， 所述具有线性变化间距的布拉格光栅具有具有线性分量L2的组时间响应，并且所述线性分量L1和L2与符号相反。

公开(公告)号：US20030012502A1

公开(公告)日：2003-01-16

申请号：US10188080

申请日：2002-07-03

Applicant: ALCATEL

Inventor： Isabelle Riant ,  Carlos De Barros ,  Thierry Lopez

IPC: G02B006/34

CPC classification number: G02B6/02138 ,  G02B6/02085 ,  G02B6/02152

Abstract: A method for imprinting a plurality of slanted Bragg gratings into a photosensitive optical fiber by exposure of said fiber to a pattern of light shaped in space and/or time and of suitable wavelenth is presented. According to the invention a basic slanted Bragg grating of a determined period is imprinted into said fiber, while, simultanously, a periodic apodisation function is applied to said single slanted Bragg grating. In its preferred embodiment the imprinting light pattern is generated by a phase mask from a UV laser, the phase mask being dithered during the imprinting.

Abstract translation: 提出了一种通过将所述光纤暴露于空间和/或时间和合适的波浪形状的光图案将多个倾斜的布拉格光栅压印成感光光纤的方法。 根据本发明，将所确定的周期的基本倾斜布拉格光栅印刷到所述光纤中，同时将周期性的变迹函数应用于所述单个倾斜布拉格光栅。 在其优选实施例中，通过来自UV激光器的相位掩模产生压印光图案，在印迹期间相位掩模被抖动。

公开(公告)号：US20020090175A1

公开(公告)日：2002-07-11

申请号：US10036448

申请日：2002-01-07

Applicant: ALCATEL

Inventor： Valerie Girardon ,  Carlos De Barros ,  Isabelle Riant

IPC: G02B006/34

CPC classification number: G02B6/02104 ,  C03C25/106 ,  G02B6/021 ,  G02B6/02119 ,  G02B6/266

Abstract: The present invention relates to a fiber grating filter optical waveguide device, comprising an optical fiber with an optical filter, both consisting essentially of silica, whereby said optical filter has an area with a grating region, wherein said area with a grating region is covered with a layer comprising a material having a refractive index which is the same or higher than the refractive index of the material of the optical fiber. The variation of the physic-chemical nature of said material allows to match the changes in the refractive index of the optical fiber of the optical filter when specific requirements for a high transmission spectrum of the filter are required.

Abstract translation: 本发明涉及一种光纤光栅滤光器光波导器件，其包括具有光学滤波器的光纤，两者都基本上由二氧化硅组成，由此所述滤光器具有带有光栅区域的区域，其中具有光栅区域的所述区域被覆盖 包括具有与光纤的材料的折射率相同或更高的折射率的材料的层。 当需要对过滤器的高透射光谱的特定要求时，所述材料的物理化学性质的变化允许匹配滤光器的光纤的折射率的变化。

公开(公告)号：US20040213513A1

公开(公告)日：2004-10-28

申请号：US10829180

申请日：2004-04-22

Applicant: ALCATEL

Inventor： Carlos De Barros ,  Isabelle Riant

IPC: G02B006/26

CPC classification number: G02B6/29394 ,  G02B6/03644 ,  G02B6/14 ,  G02B6/29319 ,  G02B6/29344

Abstract: An optical device (D) is dedicated to transforming the propagation mode of optical signals. The device comprises mode transformation means (3-5) associated with a multimode fiber (2) and comprising first and second mode converters (3and 5) coupled to each other by a multimode fiber portion (4) of selected length (L). The first converter (3) is fed with signals propagating in a first mode and it delivers the signals to the fiber portion (4) in part in the first mode and in part in a second mode of order higher than the first, and the second converter (5) is arranged to cause the signals in the first and second modes to interfere so that on outlet therefrom they present a selected spectral spacing.

Abstract translation: 光学装置（D）专用于变换光信号的传播模式。 该设备包括与多模光纤（2）相关联的模式转换装置（3-5），并且包括通过所选长度（L）的多模光纤部分（4）彼此耦合的第一和第二模式转换器（3和5）。 第一转换器（3）馈送以第一模式传播的信号，并且将信号部分地以第一模式传送到光纤部分（4），并且部分地以比第一模式高的第二模式，第二转换器 转换器（5）被布置成使得第一和第二模式中的信号干涉，使得在其出口处呈现选定的光谱间隔。

公开(公告)号：US20030194182A1

公开(公告)日：2003-10-16

申请号：US10412301

申请日：2003-04-14

Applicant: ALCATEL

Inventor： Hedi Labidi ,  Carlos De Barros ,  Herve Loury ,  Xavier Bonnet ,  Isabelle Riant ,  Jean-Jacques Guerin

IPC: G02B006/34

CPC classification number: G02B6/02195 ,  G02B6/02095 ,  H01S3/005 ,  H01S3/06754 ,  H01S2301/04 ,  H01S2301/06 ,  H04B10/2941

Abstract: A tuneable optical fibre comprising a long-period Bragg grating (5) written in a portion of an optical waveguide (10) comprising a core and an optical cladding (11), characterised in that the portion of the waveguide comprising the grating (5) is at least partially immersed in an external environment consisting of two distinct sections, a first section (1) whose refractive index is higher than that of the optical cladding (11) and a second section (2) whose refractive index is lower than that of the optical cladding (11), the long-period grating being at least partially immersed in one of the said sections so as to almost independently tune the wavelength and/or the contrast of the spectral response of the filter.

Abstract translation: 一种可调谐光纤，包括写入光纤的一部分（ 10 ）的长周期布拉格光栅（ 5 ），其包括芯和光学包层（ 其特征在于，包括光栅的波导部分（ 5 ）至少部分地浸没在由两个不同部分组成的外部环境中，第一部分（ 1 ），其折射率高于光学包层的折射率（ 11 ）和第二部分（ 2 ），其折射率低于 光学包层（ 11 ），长周期光栅至少部分地浸没在所述部分之一中，以便几乎独立地调节滤光器的光谱响应的波长和/或对比度。