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35 条记录 (耗时 0.024 秒)

    Electron acceptors for polymeric thin film waveguide media
    5.
    发明授权
    Electron acceptors for polymeric thin film waveguide media 有权
    聚合物薄膜波导介质的电子受体

    公开(公告)号：US06448416B1

    公开(公告)日：2002-09-10

    申请号：US09596069

    申请日：2000-06-16

    申请人： Mingqian He ,  Thomas M. Leslie

    发明人： Mingqian He ,  Thomas M. Leslie

    IPC分类号： C07D30730

    CPC分类号： C07D307/68

    摘要： The present invention is directed to dicyanomethylenedihydrofuran-based electron acceptors which can be used in the preparation of polymeric thin films for waveguide media, and methods of making the same.

    摘要翻译： 本发明涉及可用于制备用于波导介质的聚合物薄膜的二氰基亚甲基二氢呋喃类电子受体及其制备方法。

    Photothermal optical signal limiter
    6.
    发明授权
    Photothermal optical signal limiter 失效
    光电光信号限制器

    公开(公告)号：US06415075B1

    公开(公告)日：2002-07-02

    申请号：US09741945

    申请日：2000-12-20

    申请人： Michael E. DeRosa ,  Stephen J. Caracci ,  Dana C. Bookbinder ,  Thomas M. Leslie ,  Stephan L. Logunov

    发明人： Michael E. DeRosa ,  Stephen J. Caracci ,  Dana C. Bookbinder ,  Thomas M. Leslie ,  Stephan L. Logunov

    IPC分类号： G02B626

    CPC分类号： G02F1/0147 ,  G02B6/264

    摘要： An optical signal limiter is provided for limiting transmission of a continuous wave optical signal that exceeds a preselected threshold power level. The limiter includes a body having input and output ends that is formed at least in part from a material having a negative thermal index coefficient of between about −0.5×10−4 °C.−1 and −4.0×10−4 °C.−1 and an absorption coefficient of between 1.0 to 5.0 dB/cm at wavelengths between 980-1650 nm. The limiter also includes collimating fibers mounted on the input and output ends to minimize low power signal losses across the limiter body. It may be installed at a junction between two optical fibers and is preferably formed from a curable adhesive having the aforementioned negative thermal index coefficient to obviate the need for separate bonding materials and joining steps during the installation of the limiter. The optical limiter is reusable and with a recovery time of 1-5 milliseconds advantageously prevents power surges in optical circuits from damaging sensitive optical components by limiting the amplitude of such surges within 0.2-0.5 milliseconds.

    摘要翻译： 提供光信号限制器用于限制超过预选阈值功率电平的连续波光信号的传输。 限制器包括具有输入和输出端的主体，其至少部分地由具有在约-0.5×10 -4℃-1和-4.0×10 -4℃-1之间的负热指数系数的材料形成 并且在980-1650nm之间的波长处的吸收系数为1.0至5.0dB / cm。 限幅器还包括安装在输入和输出端的准直光纤，以最小化跨限幅器主体的低功率信号损耗。 其可以安装在两根光纤之间的连接处，并且优选由具有上述负热指数系数的可固化粘合剂形成，以避免在安装限制器期间分离的接合材料和接合步骤的需要。 光限制器是可重复使用的，并且具有1-5毫秒的恢复时间有利地通过将这种浪涌的幅度限制在0.2-0.5毫秒内来有效地防止光电路中的功率浪涌损坏敏感光学部件。