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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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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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公开(公告)号：US07095924B2
公开(公告)日：2006-08-22
申请号：US10869882
申请日：2004-06-18
IPC分类号： G02B6/34
CPC分类号： G02B6/02085 , G02B6/02095 , G02B6/14 , G02B6/29317
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US06954567B2
公开(公告)日：2005-10-11
申请号：US10423980
申请日：2003-04-28
CPC分类号： G02B6/02138 , G02B6/02085 , G02B6/12007 , G02B6/124 , G02B6/266
摘要： An optical filter composed of a concatenation of elementary filters consisting of chirped slanted Bragg gratings written on a continuous portion of an optical waveguide, characterized in that the various gratings in the concatenation have the same angle, identical lengths and a linear chirp.
摘要翻译： 由滤波器组成的滤波器组成，该滤波器由写入光波导的连续部分上的啁啾倾斜布拉格光栅组成，其特征在于，串联中的各种光栅具有相同的角度，相同长度和线性啁啾。
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5.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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6.发明授权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倾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：US07376306B2
公开(公告)日：2008-05-20
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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