Optical waveguide grating filter
    1.
    发明公开
    Optical waveguide grating filter 失效
    Gitterfilter im optischen Wellenleiter

    公开(公告)号:EP0713110A1

    公开(公告)日:1996-05-22

    申请号:EP95308201.3

    申请日:1995-11-16

    发明人: Byron, Kevin C.

    摘要: The isolation between stop and pass bands afforded by an optical fibre normally reflective Bragg grating (5) reflective over a waveband λ₃ in an optical fibre (2) is enhanced by preceding it with two blazed Bragg gratings (3, 4) that are spectrally selectively mode coupling respectively over wavebands λ₁ and λ₂, where the λ₃ waveband compasses the spectral waveband separating waveband λ₁ from waveband λ₂. The fibre is connected to an optical circulator (40) or one port of an optical 4-port 3dB coupler (50).

    摘要翻译: 通过在光纤(2)中的波段λ3上反射的光纤常规反射布拉格光栅(5)提供的停止通带之间的隔离被增强,其中两个闪烁的布拉格光栅(3,4)是光谱的 分别在波段λ1和λ2上选择性地模式耦合,其中λ3波段将分离波段λ1的波段波段与波段λ2分离。光纤连接到光环行器(40)或光端口4端口 3dB耦合器(50)。