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    • 5. 发明授权
    • Multimode optical fibre
    • 多模光纤
    • US07424195B2
    • 2008-09-09
    • US10561442
    • 2004-06-16
    • Xavier AndrieuLionel ProvostLaurent Gasca
    • Xavier AndrieuLionel ProvostLaurent Gasca
    • G02B6/02G02B6/028G02B6/036
    • G02B6/02038G02B6/0288H01S3/06708
    • 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.
    • 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。
    • 7. 发明授权
    • Optical filter
    • 滤光片
    • US06859585B1
    • 2005-02-22
    • US10601864
    • 2003-06-24
    • Carlos De BarrosLionel ProvostMarianne MolinaIsabelle RiantLaurent Gasca
    • Carlos De BarrosLionel ProvostMarianne MolinaIsabelle RiantLaurent Gasca
    • G02B6/02G02B6/34
    • G02B6/02119G02B6/03633G02B6/03644G02B6/03694
    • 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.
    • 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。
    • 9. 发明申请
    • Multimode Optical Fibre
    • 多模光纤
    • US20080118213A1
    • 2008-05-22
    • US10561442
    • 2004-06-16
    • Xavier AndrieuLionel ProvostLaurent Gasca
    • Xavier AndrieuLionel ProvostLaurent Gasca
    • G02B6/036
    • G02B6/02038G02B6/0288H01S3/06708
    • 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.
    • 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。
    • 10. 发明申请
    • DOPED-RING AMPLIFYING OPTICAL FIBER, AND AN AMPLIFIER CONTAINING SUCH A FIBER
    • 光纤放大倍数光纤和包含这种光纤的放大器
    • US20080056659A1
    • 2008-03-06
    • US11926747
    • 2007-10-29
    • Ekaterina BourovaChristian SimonneauCatherine MartinelliLionel Provost
    • Ekaterina BourovaChristian SimonneauCatherine MartinelliLionel Provost
    • G02B6/02
    • H01S3/06754H01S3/0672H01S3/1608H01S3/302H01S2301/04
    • 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.
    • 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。