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25 条记录 (耗时 0.019 秒)

    Process and device for simultaneously measuring the geometrical characteristics of an optical fibre
    2.
    发明授权
    Process and device for simultaneously measuring the geometrical characteristics of an optical fibre 失效
    用于同时测量光纤的几何特性的工艺和装置

    公开(公告)号：US4563087A

    公开(公告)日：1986-01-07

    申请号：US494253

    申请日：1983-05-13

    申请人： Yannic Bourbin ,  Herve Arditty

    发明人： Yannic Bourbin ,  Herve Arditty

    IPC分类号： G01M11/00 ,  G01B11/00 ,  G01B11/08 ,  G01B11/26 ,  G02B6/00 ,  G01B11/12

    CPC分类号： G01B11/00

    摘要： The invention relates to a process and device for measuring the optical core - mechanical sheath concentricity and the optical core ellipticity of an optical fibre. The process consists of injecting a light beam into a fibre, which has been previously bared at one of its ends. The analysis of the near field of this fibre by a detector performing a relative rotary movement with respect to said fibre provides details on the core - sheath concentricity and the core ellipticity, by carrying out a narrow band detection at the rotational frequency and at double its frequency.

    摘要翻译： 本发明涉及一种用于测量光纤芯 - 机械护套同心度和光纤椭圆率的方法和装置。 该过程包括将光束注入到先前已经在其一个端部露出的光纤中。 通过相对于所述光纤执行相对旋转运动的检测器对该光纤的近场进行分析，通过以旋转频率和双倍的频率进行窄带检测来提供芯鞘同心度和芯椭圆率的细节 频率。

    Optical fibre hydrophone
    3.
    发明授权
    Optical fibre hydrophone 失效
    光纤水听器

    公开(公告)号：US4536861A

    公开(公告)日：1985-08-20

    申请号：US583644

    申请日：1984-02-27

    申请人： Philippe Graindorge ,  Herve Arditty

    发明人： Philippe Graindorge ,  Herve Arditty

    IPC分类号： H04R23/00 ,  G01H9/00 ,  G01S7/521 ,  G02B6/00 ,  H04R1/44 ,  H04R17/00

    CPC分类号： G01H9/004

    摘要： The invention relates to a monomodal optical fibre hydrophone operating by elastooptical effect, which has an interferometer structure comprising a measuring arm, in which is arranged a very long monomodal optical fibre immersed in the interaction medium in which propagates the soundwave. A phase displacement is induced by an elastooptical effect on the soundwave propagating in the fibre, by a soundwave producing an acoustic pressure field in said medium. A reference arm establishes a reference optical path and the phase displacement, linked with the sound wave, is detected by interferometry between the two optical waves coming from these two arms. This two-armed interferometer is terminated by a photorefractive medium used as an interactive reflector in accordance with the four-wave interferometry principle.

    摘要翻译： 本发明涉及一种通过弹性光学效应操作的单模光纤水听器，其具有包括测量臂的干涉仪结构，其中布置有浸入传播声波的相互作用介质中的非常长的单模光纤。 通过在所述介质中产生声压场的声波，通过弹性光学效应对在光纤中传播的声波产生相位移动。 参考臂建立参考光路，并且通过来自这两个臂的两个光波之间的干涉测量来检测与声波相关的相位位移。 这种双臂干涉仪由根据四波干涉测量原理的用作交互式反射器的光折射介质终止。

    Device for illuminating an electro-optical medium for recording holograms in real time
    6.
    发明授权
    Device for illuminating an electro-optical medium for recording holograms in real time 失效
    用于照亮用于实时记录全息图的电光介质的装置

    公开(公告)号：US4542955A

    公开(公告)日：1985-09-24

    申请号：US504733

    申请日：1983-06-16

    申请人： Philippe Graindorge ,  Herve Arditty

    发明人： Philippe Graindorge ,  Herve Arditty

    IPC分类号： G02F1/00 ,  G02F1/03 ,  G03H1/04 ,  G03H1/06 ,  G01B9/027 ,  G02F1/29 ,  G03H1/00

    CPC分类号： G02F1/0338 ,  G03H1/04

    摘要： The invention relates to electro-optical media which make it possible to record holograms in real time. It consists in using a lamina of a selected material such as bismuth-silicon oxide, this lamina being subjected to a transverse electric field perpendicular to the fringes of the hologram to be inscribed, and in illuminating this lamina with a light beam which is not coherent with the two object and reference beams which interfere within this lamina.

    摘要翻译： 本发明涉及可以实时记录全息图的电光介质。 它包括使用诸如铋 - 氧化硅的选定材料的薄层，该薄片受到垂直于要刻划的全息图的条纹的横向电场，并且用不相干的光束照亮该薄片 其中两个物体和参考光束干涉在该层内。

    Device for measuring a nonreciprocal phase shift produced in a closed-loop interferometer
    10.
    发明授权
    Device for measuring a nonreciprocal phase shift produced in a closed-loop interferometer 失效
    用于测量在闭环干涉仪中产生的非相互相移的装置

    公开(公告)号：US4705399A

    公开(公告)日：1987-11-10

    申请号：US21574

    申请日：1987-03-03

    申请人： Philippe Graindorge ,  Herve Arditty ,  Herve Lefevre

    发明人： Philippe Graindorge ,  Herve Arditty ,  Herve Lefevre

    IPC分类号： G01P9/00 ,  G01C19/64 ,  G01C19/72 ,  G02B6/00 ,  G01B9/02

    CPC分类号： G01C19/726

    摘要： The device for measuring a nonreciprocal phase shift involves phase modulation of countercirculating waves in a closed-loop interferometer by means of a reciprocal-effect phase modulator. The modulating signal is a periodic signal having a period 2t.sub.o, where t.sub.o is the transit time of an electromagnetic wave in the closed loop. A digital phase ramp generated in the form of a stair-step signal is combined with the phase-modulating signals and applied as feedback. In an additional embodiment, control circuits are provided for correcting the modulation scale factor.

    摘要翻译： 用于测量不可逆相移的装置涉及通过互逆效应相位调制器在闭环干涉仪中进行相位调制的逆循环波。 调制信号是具有周期2to的周期信号，其中为闭环中的电磁波的渡越时间。 以梯级信号的形式产生的数字相位斜坡与相位调制信号组合并作为反馈进行应用。 在另外的实施例中，提供了用于校正调制比例因子的控制电路。