Fixed value fiber optic attenuator with index matching material
    1.
    发明授权
    Fixed value fiber optic attenuator with index matching material 失效
    具有指数匹配材料的固定值光纤衰减器

    公开(公告)号:US5581649A

    公开(公告)日:1996-12-03

    申请号:US430611

    申请日:1995-04-28

    IPC分类号: G02B6/26

    CPC分类号: G02B6/266

    摘要: A fiber optic attenuator having a predetermined, fixed attenuation value and low back reflection properties across a broad wavelength spectrum is disclosed. Attenuation is achieved by providing an optical fiber pathway having an attenuation region which causes a predetermined signal loss. The medium defining the pathway is of a substantially constant index of refraction through the device to minimize or eliminate interference caused by Fresnel reflections. An index matching material surrounds the area of attenuation to eliminate or minimize modal or cladding noise.

    摘要翻译: 公开了一种光纤衰减器,其具有预定的固定衰减值和宽波长光谱下的低背反射特性。 通过提供具有导致预定信号损失的衰减区域的光纤路径实现衰减。 限定路径的介质通过该装置具有基本恒定的折射率,以最小化或消除由菲涅耳反射引起的干扰。 折射率匹配材料围绕衰减区域以消除或最小化模态或包层噪声。