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    Multiple beam transmissions system with improved cross-talk reduction
    3.
    发明授权
    Multiple beam transmissions system with improved cross-talk reduction 失效
    具有改进的交叉减少功能的多波束传输系统

    公开(公告)号：US3679904A

    公开(公告)日：1972-07-25

    申请号：US3679904D

    申请日：1969-03-03

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： WEINER DANIEL

    IPC: H04B10/12 ,  H04B9/00

    CPC classification number: H04B10/85

    Abstract: Improved cross-talk reduction with spatial multiplexing of a plurality of N beams in a beam transmission system comprising a sequence of confocally spaced lenses is accomplished by inserting saturable absorption cells in anti-nodal regions of the transmission system, at which regions the beams are spatially distinct. The beams are resolved at the output end into N separate beams. A similar arrangement can be employed using nonconfocally spaced lenses. In a pulse-code-modulation communication system, the saturable absorption cells sharpen the pulses time-wise as well as space-wise.

    Abstract translation: 通过将可饱和吸收单元插入到传输系统的反节点区域中，在波束传播系统中通过空间多路复用在波束传输系统中进行改进的串扰减少，波束在空间上 不同。 光束在输出端分解成N个独立的光束。 使用非共面间隔的透镜可以采用类似的布置。 在脉冲编码调制通信系统中，可饱和吸收单元在时间上和空间上均可锐化脉冲。

    Optical raman oscillator employing colloidal suspension or emulsion
    4.
    发明授权
    Optical raman oscillator employing colloidal suspension or emulsion 失效
    光学拉曼振荡器使用胶体悬浮液或乳液

    公开(公告)号：US3597624A

    公开(公告)日：1971-08-03

    申请号：US3597624D

    申请日：1969-01-30

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： WEINER DANIEL

    IPC: H01S3/30

    CPC classification number: H01S3/30

    Abstract: A coherent optical Raman oscillator is disclosed in which the tendency to filament formation is reduced without proportionally impairing stimulated Raman scattering strength by employing a colloidal suspension or emulsion of Raman-active particles in an inactive medium or of colloidal-size inactive particles in a Raman-active medium. Other bodies of size smaller than a wavelength of Raman-scattered light may also be used.

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