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公开(公告)号：US20080267559A1
公开(公告)日：2008-10-30
申请号：US11574803
申请日：2005-08-04
IPC分类号： G02B6/26
CPC分类号： G02B6/14 , G02B6/02004 , G02B6/02023 , G02B6/02261
摘要： An in-fiber mode converter comprises fiber portions (10) constituting an input microlens, a fiber portion (20) constituting a phase shifting region adapted to convert a propagation mode of an optical signal into another propagation mode, and fiber portions (30) constituting an output microlens. The fiber portions are spliced, the converter is compact and losses are minimized relative to mode conversion in free space.
摘要翻译： 光纤内模式转换器包括构成输入微透镜的光纤部分（10），构成适于将光信号的传播模式转换成另一传播模式的相移区域的光纤部分（20），以及构成光纤部分 输出微透镜。 光纤部分被拼接，转换器是紧凑的，并且相对于自由空间中的模式转换而言损失最小化。
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公开(公告)号：US20080118213A1
公开(公告)日：2008-05-22
申请号：US10561442
申请日：2004-06-16
申请人： Xavier Andrieu , Lionel Provost , Laurent Gasca
发明人： Xavier Andrieu , Lionel Provost , Laurent Gasca
IPC分类号： G02B6/036
CPC分类号： G02B6/02038 , G02B6/0288 , H01S3/06708
摘要： Optical fiber having a multimode core (10) comprising:—a first zone (11), which is homogeneous, made of a first material, which has a first refractive index;—a second zone (12) made of at least one second material, which has a second refractive index, which is less than the first index, that second zone (12) being peripherally arranged with respect to the first zone (11), said first and second zones being configured so that the interface between those zones defines, in a transverse plane, a contour which has a star shape such that the multimode transmission characteristics of the fiber are equivalent to those of a graded-index fiber. Application in dual-core amplifying fibers or lasers or in transmission fibers for local networks.
摘要翻译： 具有多模芯（10）的光纤包括： - 第一区（11），其均匀，由具有第一折射率的第一材料制成; - 由至少一个第二材料制成的第二区（12） ，其具有小于所述第一索引的第二折射率，所述第二区域（12）相对于所述第一区域（11）周向地布置，所述第一和第二区域被配置为使得所述区域之间的界面限定 在横向平面中，具有星形的轮廓，使得光纤的多模传输特性等同于等级折射率光纤的多模传输特性。 在双核放大光纤或激光器或本地网络的传输光纤中的应用。
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3.发明申请DOPED-RING AMPLIFYING OPTICAL FIBER, AND AN AMPLIFIER CONTAINING SUCH A FIBER 失效光纤放大倍数光纤和包含这种光纤的放大器公开(公告)号：US20080056659A1
公开(公告)日：2008-03-06
申请号：US11926747
申请日：2007-10-29
IPC分类号： G02B6/02
CPC分类号： H01S3/06754 , H01S3/0672 , H01S3/1608 , H01S3/302 , H01S2301/04
摘要： The amplifying optical fiber comprises a single-mode core and a multimode core surrounding the single-mode core, the multimode core containing a doped layer referred to as a “doped ring” and having a certain concentration of active rare earth ions to perform amplification by active rare earth ions on at least one optical signal for injection into the amplifying fiber. The fiber is dimensioned so that the product of its length multiplied by its Raman efficiency is greater than or equal to 0.5 W−1. In addition, the fiber presents absorption defined by an absorption coefficient expressed in dB/m, which absorption presents, at a certain wavelength, a maximum value referred to as the “absorption maximum”, the fiber presents accumulated absorption, corresponding to the product of its length multiplied by the absorption maximum, that is greater than or equal to 100 dB. The invention also provides an amplifier including such a fiber, a single-mode pump, and a multimode pump.
摘要翻译： 放大光纤包括单模核心和围绕单模核心的多模核心，多模核心包含被称为“掺杂环”的掺杂层，并且具有一定浓度的活性稀土离子以通过 至少一个光信号上的活性稀土离子注入放大光纤。 纤维的尺寸设计使得其长度乘以其拉曼效率的乘积大于或等于0.5W -1。 此外，纤维呈现由以dB / m表示的吸收系数定义的吸收，该吸收在一定波长处呈现称为“吸收最大值”的最大值，纤维呈现累积吸收，对应于 其长度乘以吸收最大值，即大于或等于100 dB。 本发明还提供一种包括这种光纤的放大器，单模式泵和多模式泵。
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公开(公告)号：US07272286B2
公开(公告)日：2007-09-18
申请号：US11018696
申请日：2004-12-22
IPC分类号： G02B6/16
CPC分类号： H04B10/25253 , G02B6/02014 , G02B6/02019 , G02B6/02023 , G02B6/02242 , G02B6/02247 , G02B6/02257 , G02B6/02271 , G02B6/0281 , G02B6/0365 , G02B6/03672
摘要： The invention relates to the field of dispersion managed optical fibres for use in wavelength division multiplex transmission networks. A multimode optical fibre in which at least one higher-order mode can be propagated, is constituted radially by a single central core surrounded by an optical cladding (13), and comprises, for said higher mode or for at least one of said higher-order modes, positive chromatic dispersion optical fibre portions (D+) alternating longitudinally with negative chromatic dispersion optical fibre portions (D−).
摘要翻译： 本发明涉及用于波分复用传输网络的色散管理光纤领域。 可以传播至少一个高阶模式的多模光纤由径向地由光学包层（13）围绕的单个中心纤芯构成，并且对于所述较高模式或对于所述较高模式中的至少一个， 正色散光纤部分（D +）与负色散光纤部分（D-）纵向交替。
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公开(公告)号：US20050254762A1
公开(公告)日：2005-11-17
申请号：US10989335
申请日：2004-11-17
申请人： Lionel Provost , Pierre Sansonetti , Christine Moreau , Laurent Gasca , Jean-Marc Blondy , Jean-Louis Auguste , Sebastien Fevrier , Frederic Gerome
发明人： Lionel Provost , Pierre Sansonetti , Christine Moreau , Laurent Gasca , Jean-Marc Blondy , Jean-Louis Auguste , Sebastien Fevrier , Frederic Gerome
IPC分类号： G02B6/34 , H04B10/2525 , G02B6/02
CPC分类号： G02B6/02261 , G02B6/02014 , G02B6/0228 , G02B6/03644 , G02B6/29374 , H04B10/2525
摘要： An optical module for chromatic dispersion compensation comprises an optical fiber wound so as to present a variable radius of curvature. The fiber has an index profile such that it has, for the main propagation mode, a negative dispersion value having a minimum at a given wavelength in a given spectral band. The value and the spectral position of the dispersion minimum vary with the radius of curvature of the fiber. The module allows the introduction of a large chromatic dispersion compensation value overall of a given spectral band, as well as compensation corrections for specific wavelengths inside the given spectral band.
摘要翻译： 用于色散补偿的光学模块包括缠绕以呈现可变曲率半径的光纤。 光纤具有折射率分布，使得其对于主传播模式具有在给定光谱带中在给定波长处具有最小值的负色散值。 色散最小值和光谱位置随纤维的曲率半径而变化。 该模块允许引入给定光谱带的整体的大的色散补偿值，以及给定光谱带内的特定波长的补偿校正。
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公开(公告)号：US06937789B2
公开(公告)日：2005-08-30
申请号：US10377874
申请日：2003-03-04
CPC分类号： G02B6/14 , G02B6/1228 , G02B6/305
摘要： An optical mode converter comprising an optical guide able to transmit an optical signal in at least one guided mode, characterised in that the optical guide comprises a photosensitive zone inducing a specific index profile along a section of the guide, the said index profile simultaneously defining a longitudinal adiabatic transition and a transverse distribution of the guided mode or modes so as to deconfine the fundamental mode and to maximise the overlap with a higher-order mode.
摘要翻译： 一种光学模式转换器，包括能够以至少一种导向模式传输光信号的光导，其特征在于，所述光导包括感光区域，沿着所述引导件的一部分引导特定的折射率分布，所述索引分布同时限定 纵向绝热过渡和引导模式或模式的横向分布，以便去除基本模式并最大化与高阶模式的重叠。
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7.发明申请Suppresson of Undesirable Signal Propagation Mode(S) Downstream of Mode Converter 失效抑制模式转换器下游不良信号传播模式（S）公开(公告)号：US20090041410A1
公开(公告)日：2009-02-12
申请号：US10566376
申请日：2004-09-29
IPC分类号： G02B6/26
CPC分类号： G02B6/02095 , G02B6/14
摘要： An optical device (D) is dedicated to the transformation of the propagation mode of optical signals. This device comprises at least a first mode converter (3) that is supplied with signals that are propagated in a first guided mode and that delivers the signals in a multimode fibre (4) partly in the first guided mode and partly in a second guided more of a higher order that the first. The multimode fibre (4) comprises at least first passive filtering means (R) which have the task of converting the first guided mode into at least one dissipative cladding mode in order to prevent or limit the propagation of the signals in this first guided mode while at the same time authorising the propagation of the signals having the second guided mode in the multimode fibre (4).
摘要翻译： 光学装置（D）专用于光信号的传播模式的变换。 该装置至少包括第一模式转换器（3），该第一模式转换器（3）被提供有以第一引导模式传播的信号，并且以多模光纤（4）部分地以第一引导模式传送信号，并部分地以第二导向 一个较高的阶数是第一个。 多模光纤（4）至少包括第一无源滤波装置（R），其具有将第一导模转换成至少一个耗散包层模式的任务，以便防止或限制在该第一导向模式中的信号的传播，同时 同时授权在多模光纤（4）中传播具有第二引导模式的信号。
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公开(公告)号：US07424195B2
公开(公告)日：2008-09-09
申请号：US10561442
申请日：2004-06-16
申请人： Xavier Andrieu , Lionel Provost , Laurent Gasca
发明人： Xavier Andrieu , Lionel Provost , Laurent Gasca
CPC分类号： G02B6/02038 , G02B6/0288 , H01S3/06708
摘要： Optical fiber having a multimode core (10) comprising:—a first zone (11), which is homogeneous, made of a first material, which has a first refractive index;—a second zone (12) made of at least one second material, which has a second refractive index, which is less than the first index, that second zone (12) being peripherally arranged with respect to the first zone (11), said first and second zones being configured so that the interface between those zones defines, in a transverse plane, a contour which has a star shape such that the multimode transmission characteristics of the fiber are equivalent to those of a graded-index fiber. Application in dual-core amplifying fibers or lasers or in transmission fibers for local networks.
摘要翻译： 具有多模芯（10）的光纤包括： - 第一区（11），其均匀，由具有第一折射率的第一材料制成; - 由至少一个第二材料制成的第二区（12） ，其具有小于所述第一索引的第二折射率，所述第二区域（12）相对于所述第一区域（11）周向地布置，所述第一和第二区域被配置为使得所述区域之间的界面限定 在横向平面中，具有星形的轮廓，使得光纤的多模传输特性等同于等级折射率光纤的多模传输特性。 在双核放大光纤或激光器或本地网络的传输光纤中的应用。
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9.发明申请Slanted Bragg Grating gain flattening filter having spatially overlapping elementary filters and a manufacturing method therefor 失效具有空间重叠的基本滤波器的斜布拉格光栅增益平坦化滤波器及其制造方法公开(公告)号：US20060045422A1
公开(公告)日：2006-03-02
申请号：US10928293
申请日：2004-08-26
IPC分类号： G02B6/34
CPC分类号： G02B6/02195
摘要： An optical filter comprises a waveguide and a plurality of Slanted Bragg Gratings written in the waveguide, wherein at least two of the Slanted Bragg Gratings overlap one another. A method of producing an optical filter comprises the steps of passing an ultraviolet light through a first portion of a chirped phase mask onto a first portion of a photosensitive waveguide so as to form a first Slanted Bragg Grating in the first portion of the waveguide and passing the ultraviolet light through a second portion of the chirped phase mask onto a second portion of the photosensitive waveguide so as to form a second Slanted Bragg Grating in the second portion of the waveguide, wherein the first and second Slanted Bragg Gratings overlap one another. A further annealing step may cause a spectrum of the filter to match a target spectrum.
摘要翻译： 光学滤波器包括写入波导中的波导和多个倾斜布拉格光栅，其中至少两个倾斜布拉格光栅彼此重叠。 一种制造滤光器的方法包括以下步骤：将紫外光通过啁啾相位掩模的第一部分传递到光敏波导的第一部分上，以在波导的第一部分中形成第一倾斜布拉格光栅，并通过 通过啁啾相位掩模的第二部分的紫外光掩模到光敏波导的第二部分上，以在波导的第二部分中形成第二倾斜布拉格光栅，其中第一和第二倾斜布拉格光栅彼此重叠。 进一步的退火步骤可以使滤光片的光谱与目标光谱相匹配。
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公开(公告)号：US06859585B1
公开(公告)日：2005-02-22
申请号：US10601864
申请日：2003-06-24
CPC分类号： G02B6/02119 , G02B6/03633 , G02B6/03644 , G02B6/03694
摘要： An optical filter comprising a slanted Bragg grating inscribed in an optical fiber portion comprising a core having a refractive index n1 and a radius Rcore and a cladding having an average refractive index n2 lower than n1 and a radius Rcladding, the core and the cladding of the fiber being doped with a photosensitive dopant in the fiber portion comprising the Bragg grating, which filter is characterized in that, in the fiber portion comprising the Bragg grating, the photosensitivity of the cladding is greater than the photosensitivity of the core and the cladding includes an index step area having a refractive index n3 greater than n2 and less than n1, said index step area having a width L defined by an inside radius Rs1 greater than or equal to the radius Rcore of the core and an outside radius Rs2 less than or equal to the radius Rcladding of the cladding.
摘要翻译： 一种光学滤波器，包括内插在光纤部分中的倾斜布拉格光栅，该光纤部分包括具有折射率n1和半径Rcore的芯和具有低于n1的平均折射率n2的包层和半径Rcladding，芯和包层 纤维在包括布拉格光栅的光纤部分中掺杂有光敏掺杂剂，该滤光器的特征在于，在包含布拉格光栅的光纤部分中，包层的光敏性大于芯的光敏性，并且包层包括 具有大于n2且小于n1的折射率n3的折射率阶梯区域，所述折射台阶区域具有由大于或等于芯部的半径Rcore的内部半径Rs1和小于或等于的外部半径Rs2限定的宽度L 到包层的半径Rcladding。
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