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125 records (took 0.021 seconds)

    101.
    发明专利
    未知

    公开(公告)号：FR2820837A1

    公开(公告)日：2002-08-16

    申请号：FR0102027

    申请日：2001-02-12

    Applicant: FASTLITE

    Inventor： KAPLAN DANIEL ,  OKSENHENDLER THOMAS ,  TOURNOIS PIERRE

    IPC: G02F1/11 ,  H04J14/02 ,  G02F1/33 ,  H04B10/17

    Abstract: The invention relates to a programmable acousto-optical device in which an unknown input polarisation wave interacts successively with several different sound beams which are generated by piezoelectric transducers (T1 to T6) in one or more birefringent elasto-optical media. Said device comprises circuits for generating programmable discrete amplitude frequencies that are applied to the transducers (T1 to T6) and provides an output optical wave having a frequency spectrum amplitude modulation that is a function of both the input optical wave modulation and the sound wave modulation. The invention is particularly suitable for wavelength-multiplexed optical communication systems

    Programmable acousto-optic filter includes birefringent material in which optical signals couple with acoustic wave pattern
    102.
    发明专利
    Programmable acousto-optic filter includes birefringent material in which optical signals couple with acoustic wave pattern 未知

    公开(公告)号：FR2810750A1

    公开(公告)日：2001-12-28

    申请号：FR0008278

    申请日：2000-06-21

    Applicant: FASTLITE

    Inventor： KAPLAN DANIEL ,  OKSENHENDLER THOMAS ,  TOURNOIS PIERRE ,  VERLUISE FREDERIC

    IPC: G02F1/11 ,  G02F1/33 ,  H04J14/02

    Abstract: The acousto-optic device comprises a birefringent elasto-optic medium (1) equipped with a transducer (5). The transducer generates a modulated acoustic wave which interacts with an incident optical wave. The acousto-optic device comprises a birefringent elasto-optic medium (1) equipped with a transducer (5). The transducer generates in the medium (1) a modulated acoustic wave along a specific direction. Within the medium an input optical wave with unknown polarisation is coupled with the device. A programming circuit provides amplitude-phase-frequency modulation of the acoustic wave. The device provides a direct wave and two perpendicular diffracted waves of H,V polarisation, each bearing a modulation based on the input optical wave modulation and the acoustic wave modulation.

    SYSTÈME POUR GÉNÉRER DES IMPULSIONS OPTIQUES COURTES DE DURÉE INFÉRIEURE À LA PÉRIODE DE LA PORTEUSE OPTIQUE UTILISANT LE PRINCIPE DE L'AMPLIFICATION PARAMÉTRIQUE
    105.
    发明公开
    SYSTÈME POUR GÉNÉRER DES IMPULSIONS OPTIQUES COURTES DE DURÉE INFÉRIEURE À LA PÉRIODE DE LA PORTEUSE OPTIQUE UTILISANT LE PRINCIPE DE L'AMPLIFICATION PARAMÉTRIQUE 审中-公开
    系统将根据参量增益的FOR短GENERATING短光学脉冲持续时间较光载波的原则的时候

    公开(公告)号：EP3074815A1

    公开(公告)日：2016-10-05

    申请号：EP14830971.9

    申请日：2014-11-28

    Applicant: Fastlite

    Inventor： FORGET, Nicolas

    IPC: G02F1/35 ,  G02F1/39

    Abstract: The invention relates to a short optical pulse generator including: a generator (P,B1) of optical pulses having a wavelength equal to λ/2 and a spectral width smaller than λ/3; a generator (P, B2) of optical pulses having a duration shorter than 10 picoseconds at a wavelength of λ/3; a device (RI) recombining the pulses from the generators; a parametric amplification device (OPA1) receiving, as an input, the output from the recombining device; a filter (F2) extracting, from the output of the amplification device, a band centered on a wavelength λ; a second harmonic generator (SH) receiving the output of the filter (F2) and generating a band centered on a wavelength λ/2; and a programmable device (DCDP2) enabling a time-based adjustment of the pulses corresponding to said bands such as to make it possible to generate a pulse having a wavelength equal to λ/3 and a duration lower than the period of the optical cycle.

    Abstract translation: 本发明涉及到一个短光脉冲发生器，其包括：具有相等的波长的光脉冲的发电机（P，B1）为λ/ 2和光谱宽度小于λ/ 3; 一个发电机（P，B2）具有λ的波长/ 3大于10个皮秒短的持续时间的光脉冲; 的装置（RI）重组来自发电机的脉冲; 一个参量放大装置（OPA1）接收，作为输入到，从重组器件的输出; 一个滤波器（F2）中提取，从所述放大装置的输出，集中在一个波长λ的频带; 二次谐波发生器（SH）接收到过滤器（F2）的输出，并产生集中在一个波长的带λ/ 2; 和可编程设备（DCDP2）令该脉冲对应于所述频带的一个基于时间的调整：如以使得可以产生具有等于一个波长λ/ 3的脉冲和比光学循环的周期下的持续时间。

    DISPOSITIF POUR LA MISE EN FORME TEMPORELLE EN AMPLITUDE ET EN PHASE D'IMPULSIONS LUMINEUSES ULTRA-BREVES
    110.
    发明公开
    DISPOSITIF POUR LA MISE EN FORME TEMPORELLE EN AMPLITUDE ET EN PHASE D'IMPULSIONS LUMINEUSES ULTRA-BREVES 有权
    DISPOSITIF POUR LA MISE EN FORME TEMPORELLE EN AMPLITUDE ET EN EN PHASE D'IMPULSIONS LUMINEUSES ULTRA-BREVES

    公开(公告)号：EP2981860A1

    公开(公告)日：2016-02-10

    申请号：EP14719057.3

    申请日：2014-03-31

    Applicant: Fastlite

    Inventor： TOURNOIS, Pierre ,  FORGET, Nicolas

    IPC: G02F1/01 ,  G02F1/135

    CPC classification number: G02F1/1326 ,  G02B6/105 ,  G02B21/0084 ,  G02F1/0126 ,  G02F1/135 ,  G02F2203/26 ,  H01S3/0057

    Abstract: A device for the temporal shaping of the amplitude and phase of ultrashort pulses, comprising: - a birefringent waveguide 1 of main axis Δ consisting of a nematic liquid crystal 2 located between a photoconductive material 3 and a substrate 4, - two transparent electrodes, one of which 5 is located between said nematic liquid crystal 2 and said substrate 4, and the other 6 such that said photoconductive material 3 is located between said other electrode 6 and said nematic liquid crystal 2, and - projection optics 7 for projecting a programmable optical mask 8 onto said photoconductive material 3.

    Abstract translation: 一种用于超短脉冲的幅度和相位的时间整形的装置，包括： - 由位于光电导材料3和衬底4之间的向列型液晶2组成的主轴Δ的双折射波导1， - 两个透明电极，一个 其中5位于所述向列型液晶2和所述衬底4之间，另外6个位于所述另一电极6和所述向列型液晶2之间，以及 - 投影光学系统7，用于将可编程光学器件 将掩模8掩模到所述光电导材料3上。

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