Dynamic gain equalising filter
    1.
    发明申请
    Dynamic gain equalising filter 失效
    动态增益均衡滤波器

    公开(公告)号:US20030194182A1

    公开(公告)日:2003-10-16

    申请号:US10412301

    申请日:2003-04-14

    申请人: ALCATEL

    IPC分类号: G02B006/34

    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。

    Optical filter and a filter method
    2.
    发明申请
    Optical filter and a filter method 审中-公开
    滤光片和滤光片

    公开(公告)号:US20030133653A1

    公开(公告)日:2003-07-17

    申请号:US10330145

    申请日:2002-12-30

    申请人: ALCATEL

    IPC分类号: G02B006/26

    摘要: An optical filter includes a coupler having n output branches and an input branch receiving an input signal whose spectrum comprises a comb of wavelengths periodically spaced by a spacing eP. Each of the n output branches is coupled to a waveguide including two or more cascaded copropagated coupling components. Each of the n branches produces an output signal whose spectrum comprises a comb of wavelengths periodically spaced by a spacing equal to n times the spacing eP. Each of the n output signal spectra is complementary to the others.

    摘要翻译: 光学滤波器包括具有n个输出分支的耦合器和接收输入信号的输入分支,该输入信号的频谱包括以间隔eP周期间隔的波长梳。 n个输出分支中的每一个耦合到包括两个或更多个级联的共同传播的耦合部件的波导。 n个分支中的每一个产生输出信号,其频谱包括周期性间隔等于间隔eP的n倍的间隔的波长梳。 n个输出信号光谱中的每一个与其他信号光谱互补。