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17 条记录 (耗时 0.023 秒)

    Method of forming a dispersing grating in an optical fiber
    1.
    发明授权
    Method of forming a dispersing grating in an optical fiber 失效
    在光纤中形成分散光栅的方法

    公开(公告)号：US5655040A

    公开(公告)日：1997-08-05

    申请号：US572717

    申请日：1995-12-14

    申请人： Jose Chesnoy ,  Isabelle Riant ,  Pierre Sansonetti

    发明人： Jose Chesnoy ,  Isabelle Riant ,  Pierre Sansonetti

    IPC分类号： G03F7/20 ,  G02B6/34

    CPC分类号： G03F7/70283 ,  G02B6/02133 ,  G02B6/02138 ,  G02B6/02152 ,  G03F7/7035

    摘要： A laser source supplies a primary laser beam. A phase grating generates two secondary beams from the primary beam so as to form interference fringes that are inscribed in an optical fiber by photo-refraction. An optical system of variable focal length varies the gap between the interference fringes so as to vary the pitch of the Bragg grating discretely for successive segments of the optical fiber. Means displace the primary laser beam and the optical fiber relative to each other by successive segments of said fiber. These means are synchronized with the variation of the focal length of the optical system. Application to telecommunications.

    摘要翻译： 激光源提供主激光束。 相位光栅从主光束产生两个次光束，以便通过光折射形成内接在光纤中的干涉条纹。 可变焦距的光学系统改变干涉条纹之间的间隙，以便为光纤的连续段离散地改变布拉格光栅的间距。 意味着主激光束和光纤相对于所述光纤的连续部分彼此相对移位。 这些装置与光学系统的焦距的变化同步。 应用于电讯业。

    Method of and system for writing a bragg grating point by point by point in an optical fiber
    2.
    发明授权
    Method of and system for writing a bragg grating point by point by point in an optical fiber 失效
    在光纤中逐点写入布拉格光栅的方法和系统

    公开(公告)号：US5768454A

    公开(公告)日：1998-06-16

    申请号：US772514

    申请日：1996-12-24

    申请人： Jose Chesnoy ,  Pierre Sansonetti ,  Isabelle Riant

    发明人： Jose Chesnoy ,  Pierre Sansonetti ,  Isabelle Riant

    IPC分类号： G02B5/18 ,  G02B6/02 ,  G02B6/10 ,  G02B6/26 ,  G02B6/34 ,  G02B27/44

    CPC分类号： G02B6/02138

    摘要： A system for writing a Bragg grating point-by-point in an optical waveguide includes an illumination system for producing a primary beam. It further includes a diffraction grating to receive the primary beam and to produce a zero order secondary beam and two symmetrical secondary beams of higher order and a focusing optical device for focusing the secondary beams onto a writing area of the waveguide. The diffraction grating and the focusing optical device define an intensity function of writing in the area of the guide including a central peak and two secondary peaks spaced from the central peak by a distance equal to the pitch of the grating.

    摘要翻译： 在光波导中逐点写入布拉格光栅的系统包括用于产生主光束的照明系统。 它还包括一个衍射光栅，用于接收一次光束，并产生一个零级二次光束和两个高阶对称次级光束，以及一个聚焦光学器件，用于将二次光束聚焦在波导的写入区域上。 衍射光栅和聚焦光学器件限定了在引导区域中写入的强度函数，其包括中心峰值和与中心峰值间隔开距离等于光栅间距的两个次级峰值。

    Method of manufacturing a multi-core optical fiber
    4.
    发明授权
    Method of manufacturing a multi-core optical fiber 失效
    制造多芯光纤的方法

    公开(公告)号：US5944867A

    公开(公告)日：1999-08-31

    申请号：US26120

    申请日：1998-02-19

    申请人： Jose Chesnoy ,  Jean-Yves Boniort ,  Andre Tardy ,  Claude Brehm ,  Pierre Sansonetti

    发明人： Jose Chesnoy ,  Jean-Yves Boniort ,  Andre Tardy ,  Claude Brehm ,  Pierre Sansonetti

    IPC分类号： C03B37/012 ,  C03B37/028

    CPC分类号： G02B6/02042 ,  C03B37/01222 ,  C03B37/027 ,  C03B2203/34

    摘要： A method of manufacturing a multi-core optical fiber, the method including assembling together a plurality of substantially identical single-core optical fiber preforms (2', 2"), referred to as "single-core preforms", each of which includes a core bar (3) surrounded by a layer of optical cladding (4), so as to form a "multi-core preform" (10) and drawing down the multi-core preform (10) so as to obtain the multi-core optical fiber. The assembly step includes securing the single-core preforms (2', 2") to one another by fusing them over their entire lengths or over portions thereof along their tangential lines of contact (T), without inserting the multi-core preform (10) into a holding tube. A vacuum is maintained in the preform during the drawing step, the vacuum being formed before or during the drawing step.

    摘要翻译： 一种制造多芯光纤的方法，所述方法包括将多个基本上相同的单芯光纤预制棒（2'，2“）组装在一起，被称为”单芯预制棒“，每个包括 由光学包层（4）包围的芯棒（3），以形成“多芯预制棒”（10）并拉下多芯预制棒（10）以获得多芯 光纤。 组装步骤包括通过将单芯预成型件（2'，2“）彼此的整个长度或其部分沿其切线（T）熔合而彼此固定，而不插入多芯预制件 10）进入保持管。 在拉伸步骤期间在预成型件中保持真空，在拉拔步骤之前或期间形成真空。

    Method of manufacturing a multi-core optical fiber
    5.
    发明授权
    Method of manufacturing a multi-core optical fiber 失效
    制造多芯光纤的方法

    公开(公告)号：US5792233A

    公开(公告)日：1998-08-11

    申请号：US560796

    申请日：1995-11-21

    申请人： Jose Chesnoy ,  Jean-Yves Boniort ,  Andre Tardy ,  Claude Brehm ,  Pierre Sansonetti

    发明人： Jose Chesnoy ,  Jean-Yves Boniort ,  Andre Tardy ,  Claude Brehm ,  Pierre Sansonetti

    IPC分类号： C03B37/012 ,  C03B37/028

    CPC分类号： G02B6/02042 ,  C03B37/01222 ,  C03B37/027 ,  C03B2203/34

    摘要： A method of manufacturing a multi-core optical fiber, the method including assembling together a plurality of substantially identical polished single-core optical fiber preforms (2', 2"), referred to as "single-core preforms", each of which includes a core bar (3) surrounded by a layer of optical cladding (4), so as to form a "multi-core preform" (10), and drawing down the multi-core preform (10) so as to obtain the multi-core optical fiber. The assembly step includes securing the single-core preforms (2', 2") to one another by fusing them over their entire lengths or over portions thereof along their tangential lines of contact (T), without inserting the multi-core preform (10) into a holding tube. A vacuum is maintained in the preform during the drawing step, the vacuum being formed before or during the drawing step.

    摘要翻译： 一种制造多芯光纤的方法，该方法包括将多个基本相同的抛光单芯光纤预制棒（2'，2“）组装在一起，被称为”单芯预制棒“ 包括由光学包层（4）包围的芯棒（3），以形成“多芯预制棒”（10），并拉下多芯预制棒（10）以获得多 芯光纤。 组装步骤包括通过将单芯预成型件（2'，2“）彼此的整个长度或其部分沿其切线（T）熔合而彼此固定，而不插入多芯预制件 10）进入保持管。 在拉伸步骤期间在预成型件中保持真空，在拉拔步骤之前或期间形成真空。

    Semiconductor laser source modulated at high frequency
    8.
    发明授权
    Semiconductor laser source modulated at high frequency 失效
    半导体激光源高频调制

    公开(公告)号：US5007062A

    公开(公告)日：1991-04-09

    申请号：US403745

    申请日：1989-09-06

    申请人： Jose Chesnoy

    发明人： Jose Chesnoy

    IPC分类号： H01S5/062 ,  H01S5/065 ,  H01S5/125

    CPC分类号： H01S5/065 ,  H01S5/06213 ,  H01S5/06216 ,  H01S5/125

    摘要： A semiconductor laser (2) constitutes a monolithic source whose intensity is modulated at a frequency lying in the microwave frequency range, typically 10-20 GHz to 100 GHz. It is based on coupling between the longitudinal modes of the laser, with intensity modulation being given by beats between the various modes of the laser. Optimization and control of the laser are made possible by splitting the optical cavity (6, 8, 10) of the laser into successive sections (20, 22, 24). The invention is particularly suitable for telecommunications applications.

    摘要翻译： 半导体激光器（2）构成其强度在微波频率范围内（通常为10-20GHz至100GHz）的频率进行调制的单片源。 它基于激光器的纵向模式之间的耦合，强度调制由激光器的各种模式之间的节拍给出。 通过将激光的光腔（6,8,10）分成连续的部分（20,22,24），可以实现激光的优化和控制。 本发明特别适用于电信应用。

    Synchronous modulation method and apparatus for in-line regeneration of a WDM soliton signal, and an optical telecommunications systems using the method
    10.
    发明授权
    Synchronous modulation method and apparatus for in-line regeneration of a WDM soliton signal, and an optical telecommunications systems using the method 失效
    用于WDM孤子信号的在线再生的同步调制方法和装置，以及使用该方法的光通信系统

    公开(公告)号：US5801862A

    公开(公告)日：1998-09-01

    申请号：US787215

    申请日：1997-01-22

    申请人： Emmanuel Desurvire ,  Jose Chesnoy ,  Olivier Leclerc

    发明人： Emmanuel Desurvire ,  Jose Chesnoy ,  Olivier Leclerc

    IPC分类号： H03L7/00 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152 ,  H04B10/18 ,  H04J14/00 ,  H04J14/02 ,  H04B10/00

    CPC分类号： H04B10/25077 ,  H04J14/02

    摘要： The object of the invention enables wavelength division multiplexed solitons conveyed by an optical fiber to be regenerated synchronously. The method uses clock recovery from the WDM signal, and synchronous modulation of the solitons at the clock rate recovered in this way. The locations for the optical modulators are selected to be at a distance between the transmitter and the first modulator or between successive modulators along the optical link such that the signals at different wavelengths are synchronous. The apparatus of the invention regenerates solitons in-line by synchronously modulating said solitons using an optical modulator, clock recovery, and multichannel filtering at the output from the modulator. In a particular embodiment, the telecommunications system of the invention also includes fiber lengths having different dispersion relationships depending on their position within the link, so as to achieve "dispersion management" within the link. The invention is applicable to optical telecommunications over great distances by means of solitons.

    摘要翻译： 本发明的目的是使由光纤传送的波分复用孤子同步再生。 该方法使用WDM信号的时钟恢复，以这种方式恢复的时钟速率对孤子进行同步调制。 光调制器的位置被选择为在发射机和第一调制器之间的距离处或沿着光链路的连续调制器之间的距离，使得不同波长的信号是同步的。 本发明的装置通过在调制器的输出处使用光调制器，时钟恢复和多通道滤波同步调制所述孤子来直接再生孤子。 在特定实施例中，本发明的电信系统还包括具有不同色散关系的光纤长度，取决于它们在链路内的位置，从而实现链路内的“色散管理”。 本发明适用于通过孤岛的远距离光通信。