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17 条记录 (耗时 0.014 秒)

    Method of forming a dispersing grating in an optical fiber
    2.
    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。

    Semiconductor laser source modulated at high frequency
    4.
    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
    6.
    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。

    Optical fiber amplifier with two directional pumping
    10.
    发明授权
    Optical fiber amplifier with two directional pumping 失效
    光纤放大器采用双向抽水

    公开(公告)号：US5640268A

    公开(公告)日：1997-06-17

    申请号：US606298

    申请日：1996-02-23

    申请人： Jose Chesnoy

    发明人： Jose Chesnoy

    IPC分类号： G02F1/35 ,  H01S3/06 ,  H01S3/07 ,  H01S3/094 ,  H01S3/10 ,  H01S5/14 ,  H01S3/00

    CPC分类号： H01S3/094003 ,  H01S3/094011 ,  H01S5/146

    摘要： An amplifying fiber is connected at both ends to two respective pump-forming semiconductor lasers. The connections are made via two pump injection fibers and two multiplexers. According to the invention, each of the two pump injection fibers includes a respective photorefractive filter constituting a portion of the resonant cavity of the associated pump, and serving to separate the spectrum bands of the pumps. The invention is particularly applicable to optical fiber telecommunications networks.

    摘要翻译： 放大光纤的两端连接到两个相应的泵浦形成半导体激光器。 连接通过两个泵注射纤维和两个多路复用器进行。 根据本发明，两个泵浦注射纤维中的每一个包括构成相关泵的谐振腔的一部分的相应的光折射滤光器，并且用于分离泵的光谱带。 本发明特别适用于光纤电信网络。