Dynamic gain equalizing filter
    1.
    发明授权
    Dynamic gain equalizing filter 失效
    动态增益均衡滤波器

    公开(公告)号:US06873765B2

    公开(公告)日:2005-03-29

    申请号:US10412301

    申请日:2003-04-14

    摘要: 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.

    摘要翻译: 一种可调谐光纤,包括写入包括芯和光学包层(11)的光波导(10)的一部分中的长周期布拉格光栅(5),其特征在于,包括光栅(5)的波导部分 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)的折射率高于光学包层(11)的折射率,第二部分(2)的折射率低于 所述光学包层(11),所述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所述滤光器的光谱响应的波长和/或对比度。

    Optical amplification system
    2.
    发明申请
    Optical amplification system 审中-公开
    光放大系统

    公开(公告)号:US20060285199A1

    公开(公告)日:2006-12-21

    申请号:US11101552

    申请日:2005-04-08

    IPC分类号: H01S3/00

    CPC分类号: H04B10/296 G02B6/02095

    摘要: An optical amplification system is described which comprises an optical amplifier and an optical filter. The gain of the optical amplifier is changeable to different gain values. For every one of the gain values, a wavelength-dependent gain curve exists. At least for one of the gain values, the gain curve varies over the wavelength. An apodized long-period grating (LPG) is used as the optical filter. The apodized LPG provides at least one wavelength-dependent attenuation curve which compensates the gain curve varying over the wavelength.

    摘要翻译: 描述了包括光放大器和滤光器的光放大系统。 光放大器的增益可以改变为不同的增益值。 对于每个增益值,存在波长相关的增益曲线。 至少对于增益值之一,增益曲线在波长上变化。 使用变迹长周期光栅(LPG)作为滤光器。 变迹的LPG提供至少一个波长依赖的衰减曲线,其补偿在波长上变化的增益曲线。

    Bragg grating filter optical waveguide device
    3.
    发明授权
    Bragg grating filter optical waveguide device 失效
    布拉格光栅滤波器光波导器件

    公开(公告)号:US06757462B2

    公开(公告)日:2004-06-29

    申请号:US10115253

    申请日:2002-04-04

    IPC分类号: G02B634

    摘要: The present invention relates to a Bragg grating filter optical waveguide device, comprising an optical fiber provided with a Bragg grating region which is externally strained to alter the range of chirping. The external strain is induced by a gradient-generating mechanical body bonded onto the length of the fiber grating.

    摘要翻译: 布拉格光栅滤波器光波导器件技术领域本发明涉及布拉格光栅滤波器光波导器件,其包括设置有布拉格光栅区域的光纤,其外部应变以改变啁啾的范围。 外部应变由粘附在光纤光栅长度上的梯度产生机械体引起。

    Optical chromatic dispersion compensation module
    4.
    发明授权
    Optical chromatic dispersion compensation module 失效
    光色散补偿模块

    公开(公告)号:US07177501B2

    公开(公告)日:2007-02-13

    申请号:US11098397

    申请日:2005-04-05

    IPC分类号: G02B6/34

    摘要: An optical chromatic dispersion compensation module consists of a portion of fiber (10) comprising a variable pitch Bragg grating and a mechanical structure (1) consisting of two flexible mountings (2, 2′) and one fixed mounting (3). The portion of fiber (10) is attached to said mechanical structure (1) at three points: A first soft mount point (5) is connected to the fixed mounting (3) and two rigid mount points (4, 4′) are connected to the flexible mountings (2, 2′). The module also consists of a mechanical actuator (20) designed to act on the mechanical structure (1) to compress a first portion of the Bragg grating and to stretch a second portion of the Bragg grating while keeping the central section of the grating fixed. The chromatic dispersion value produced by the Bragg grating filter is thus modified, while its central wavelength remains fixed.

    摘要翻译: 光学色散补偿模块由包括可变间距布拉格光栅的光纤(10)和由两个柔性安装件(2,2')和一个固定安装件(3)组成的机械结构(1)组成。 纤维(10)的部分在三个点处附接到所述机械结构(1):第一软安装点(5)连接到固定安装件(3),并且两个刚性安装点(4,4')连接 到柔性安装件(2,2')。 模块还包括设计成作用在机械结构(1)上的机械致动器(20),以压缩布拉格光栅的第一部分并拉伸布拉格光栅的第二部分,同时保持光栅的中心部分固定。 因此,布拉格光栅滤波器产生的色散值被修改,而其中心波长保持固定。

    Optical chromatic dispersion compensation module
    5.
    发明申请
    Optical chromatic dispersion compensation module 失效
    光色散补偿模块

    公开(公告)号:US20050220409A1

    公开(公告)日:2005-10-06

    申请号:US11098397

    申请日:2005-04-05

    IPC分类号: G02B6/02 G02B6/34 H04B10/2519

    摘要: An optical chromatic dispersion compensation module consists of a portion of fiber (10) comprising a variable pitch Bragg grating and a mechanical structure (1) consisting of two flexible mountings (2, 2′) and one fixed mounting (3). The portion of fiber (10) is attached to said mechanical structure (1) at three points: A first soft mount point (5) is connected to the fixed mounting (3) and two rigid mount points (4, 4′) are connected to the flexible mountings (2, 2′). The module also consists of a mechanical actuator (20) designed to act on the mechanical structure (1) to compress a first portion of the Bragg grating and to stretch a second portion of the Bragg grating while keeping the central section of the grating fixed. The chromatic dispersion value produced by the Bragg grating filter is thus modified, while its central wavelength remains fixed.

    摘要翻译: 光学色散补偿模块由包括可变间距布拉格光栅的光纤(10)和由两个柔性安装件(2,2')和一个固定安装件(3)组成的机械结构(1)组成。 纤维(10)的部分在三个点处附接到所述机械结构(1):第一软安装点(5)连接到固定安装件(3),并且两个刚性安装点(4,4')连接 到柔性安装件(2,2')。 模块还包括设计成作用在机械结构(1)上的机械致动器(20),以压缩布拉格光栅的第一部分并拉伸布拉格光栅的第二部分,同时保持光栅的中心部分固定。 因此,布拉格光栅滤波器产生的色散值被修改,而其中心波长保持固定。