Optical filters
    1.
    发明授权
    Optical filters 失效
    光滤波器

    公开(公告)号:US06198863B1

    公开(公告)日:2001-03-06

    申请号:US09051207

    申请日:1998-04-28

    IPC分类号: G02B634

    摘要: An optical filter is formed from at least two grating located in a waveguide region of a semiconductor optical device. Each grating has a multiple peak optical passband. The gratings are spaced apart in the waveguide region and form an optical cavity having a comb-filter characteristic. The gratings may be located in the active region of an optical gain element and in a preferred example are superstructure gratings (SSGs). A number of filters may be joined together in series.

    摘要翻译: 光学滤波器由位于半导体光学器件的波导区域中的至少两个光栅形成。 每个光栅具有多峰光学通带。 光栅在波导区域中间隔开并形成具有梳状滤波器特性的光学腔。 光栅可以位于光学增益元件的有源区域中,并且在优选的示例中是上部结构光栅(SSG)。 多个过滤器可以串联在一起。