Receiver optical sub-assembly with reduced back reflection
    1.
    发明申请
    Receiver optical sub-assembly with reduced back reflection 审中-公开
    接收器光学子组件具有减少的反射反射

    公开(公告)号:US20050018981A1

    公开(公告)日:2005-01-27

    申请号:US10892843

    申请日:2004-07-16

    CPC分类号: G02B6/4207 G02B6/4292

    摘要: The invention relates to a receiver optical sub-assembly (ROSA) for use in an optical transceiver to convert optical signals transmitted along an optical fiber into electrical signals for use by a host device. Conventionally, light exiting the optical fiber inside an optical coupler of the ROSA encounters a refractive index mismatched interface, e.g. fiber/air, causing a portion of the light to be reflected directly back into the fiber. To minimize back reflections at the interface with the optical fiber, an optical insert is provided having an index of refraction matching that of the optical fiber, thereby moving the mismatched interface remote from the end of the fiber to an interface of the optical insert and a lens, to which the optical insert is attached.

    摘要翻译: 本发明涉及一种在光收发器中使用的接收机光学子组件(ROSA),用于将沿着光纤传输的光信号转换成电信号以供主机设备使用。 常规地,离开ROSA的光耦合器内的光纤的光遇到折射率不匹配的界面,例如。 纤维/空气,使一部分光直接反射回纤维。 为了最小化在与光纤的接口处的反射反射,提供具有与光纤的折射率相匹配的折射率的光学插入件,从而将不匹配的接口从光纤的端部移动到光学插入件的接口和 透镜,光学插入件附接到该透镜。