公开(公告)号：US06366729B1

公开(公告)日：2002-04-02

申请号：US09594774

申请日：2000-06-16

申请人： Eric Brandon ,  Jean-Pierre Blondel ,  Patrice Le Roux ,  Denis Toullier

发明人： Eric Brandon ,  Jean-Pierre Blondel ,  Patrice Le Roux ,  Denis Toullier

IPC分类号： G02B602

CPC分类号： H04B10/2916 ,  H01S3/302 ,  H04B10/2537 ,  H04B2210/003

摘要： In a fiber optic transmission system comprising line fiber and a pump for distributed amplification in the line fiber by stimulated Raman scattering, the line fiber comprises multiple sections and the nature of the fibers in each section and the length of each section are chosen so that the Raman gain is lower than the Rayleigh backscattering coefficient at all points of the system. This avoids the limitations that are experienced if the Raman gain is greater than the Rayleigh backscattering coefficient.

摘要翻译： 在包括线路光纤和用于通过受激拉曼散射的线路光纤中的分布式放大的泵的光纤传输系统中，线路光纤包括多个部分，并且每个部分中的纤维的性质和每个部分的长度被选择为使得 拉曼增益低于系统所有点处的瑞利后向散射系数。 这避免了拉曼增益大于瑞利后向散射系数时所经历的限制。

公开(公告)号：US06807373B1

公开(公告)日：2004-10-19

申请号：US09597081

申请日：2000-06-20

申请人： Denis Toullier ,  Jean-Pierre Blondel ,  Eric Brandon ,  Patrice Le Roux

发明人： Denis Toullier ,  Jean-Pierre Blondel ,  Eric Brandon ,  Patrice Le Roux

IPC分类号： H04J1402

CPC分类号： H04B10/2916 ,  G02B6/2932 ,  H01S3/0675 ,  H01S3/094003 ,  H01S3/302

摘要： The invention relates to a system for injecting into a fiber signals from multiple sources at different wavelengths. The signals from each source are injected into the fiber by a circulator. The circulators of the various sources are cascaded. Reflector means for reflecting signals from sources previously injected are provided between each source and its circulator. The invention is used to inject signals from multiple sources without the injection of signals from one source attenuating signals from sources previously injected. It applies in particular to Raman amplification, for which purpose it provides a multiband source without attenuation between bands. Multiband amplifications is achieved without loss of gain between bands.

摘要翻译： 本发明涉及一种用于从不同波长的多个光源注入光纤信号的系统。 来自每个源的信号通过循环器注入到光纤中。 各种来源的循环器是级联的。 在每个源和其循环器之间提供用于反映来自先前注入的源的信号的反射器装置。 本发明用于从多个源注入信号，而不用从一个源的信号中注入来自先前注入的源的信号。 它特别适用于拉曼放大，为此，它提供了一个多频段，而不会在频带之间衰减。 实现多频带放大，而不损失频带之间的增益。

公开(公告)号：US06697545B2

公开(公告)日：2004-02-24

申请号：US09956921

申请日：2001-09-21

申请人： Jean-Pierre Blondel ,  Eric Brandon ,  Patrice Le Roux ,  Denis Toullier

发明人： Jean-Pierre Blondel ,  Eric Brandon ,  Patrice Le Roux ,  Denis Toullier

IPC分类号： G20B642

CPC分类号： H04B10/07 ,  H04B10/071

摘要： The invention concerns a method for monitoring an optical waveguide between a monitoring terminal point and a monitoring unit, in which an optical data signal from a transmitter, and for amplification, pump light from a pump laser, is emitted into the optical waveguide, wherein a monitoring signal transmitted by the monitoring unit is returned via the same waveguide to the monitoring unit by a reflection device located at the monitoring terminal point, in particular a Bragg grating placed in the optical waveguide, and wherein the reflection device is tuned to a reflection that is exactly the wavelength of the monitoring signal, as well as a monitoring system and a monitoring unit for said Method.

摘要翻译： 本发明涉及一种用于监测监测终端点和监测单元之间的光波导的方法，其中来自发射机的光数据信号和用于放大的来自泵浦激光器的泵浦光被发射到光波导中，其中a 由监视单元发送的监视信号通过位于监视终端点的反射装置，特别是放置在光波导中的布拉格光栅，通过相同的波导返回监视单元，并且其中反射装置被调谐到反射 正好是监测信号的波长，以及用于所述方法的监测系统和监测单元。

公开(公告)号：US07076128B2

公开(公告)日：2006-07-11

申请号：US10327102

申请日：2002-12-24

申请人： Eric Brandon ,  Laurent Labrunie ,  Jean-Pierre Blondel ,  François Boubal ,  Laurence Buet ,  Vincent Havard ,  Patrice Le Roux

发明人： Eric Brandon ,  Laurent Labrunie ,  Jean-Pierre Blondel ,  François Boubal ,  Laurence Buet ,  Vincent Havard ,  Patrice Le Roux

IPC分类号： G02B6/28

CPC分类号： H04B10/077 ,  H04B10/07955

摘要： The invention refers to a safety procedure for optical fiber systems. Such systems are widely used in telecommunication to transport optical signals between a transmitter terminal and a receiver terminal. By the invented safety procedure the optical input power fed into said optical fiber system is automatically shut off or at least reduced in case of an unintended escape of light from at least one fiber. A safety interface, provided in the transmission line detects changes of the total optical output power in at least one fiber and initiates a shut-down of the input power as soon as a decrease of the total output power is detected, that exceeds a predefined value within a predefined time window. Thus the slope of the total output power is measured and evaluated rather than its absolute value.