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1.发明授权Elimination of optical power limitation due to stimulated raman scattering in fiber optic links 失效消除由于光纤链路中激发的拉曼散射引起的光功率限制公开(公告)号：US06529672B1
公开(公告)日：2003-03-04
申请号：US09228683
申请日：1999-01-12
IPC分类号： G02B626
CPC分类号： H04B10/2916 , H01S3/302 , H04B10/2537
摘要： In a fiber optic link signal or pump sending power limitations due to stimulated Raman scattering are pushed back by using attenuation in the Raman gain region. Various techniques are proposed for limiting stimulated Raman scattering. In particular, the use of optical fiber lightly doped with dysprosium, the attenuation of which increases rapidly beyond 1 500 nm, is proposed. The use of this fiber to transport pump power at 1 480 nm towards remote amplifiers would enable injection of pump power up to an order of magnitude of 10 W, whereas the limit is currently 1.3 W. This technique would enable the range of links to be increased approximately 80 km.
摘要翻译： 在光纤链路中，由于受激拉曼散射而发送功率限制的光纤链路信号或泵通过使用拉曼增益区域中的衰减而被推回。 提出了限制受激拉曼散射的各种技术。 特别地，提出了使用轻掺杂镝的光纤，其衰减迅速增加超过1500nm。 使用这种光纤将泵浦功率传输到1 480 nm远程放大器可以使泵浦功率的注入达到10 W的数量级，而限制是目前的1.3 W.这种技术将使链路范围成为 增加约80公里。
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2.发明授权公开(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.
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公开(公告)号：US06807373B1
公开(公告)日：2004-10-19
申请号：US09597081
申请日：2000-06-20
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。
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4.发明授权Method for monitoring an optical waveguide, as well as monitoring system and monitoring unit for said method 有权用于监测光波导的方法，以及用于所述方法的监视系统和监视单元公开(公告)号：US06697545B2
公开(公告)日：2004-02-24
申请号：US09956921
申请日：2001-09-21
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。
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5.发明授权Limitation of oscillation caused by Raman amplification due to the use of different fibers 有权由于使用不同的纤维，拉曼放大引起的振荡的限制公开(公告)号：US06366729B1
公开(公告)日：2002-04-02
申请号：US09594774
申请日：2000-06-16
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。
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公开(公告)号：US06344923B1
公开(公告)日：2002-02-05
申请号：US09442818
申请日：1999-11-23
申请人： Jean-Pierre Blondel , Eric Brandon
发明人： Jean-Pierre Blondel , Eric Brandon
IPC分类号： H01S300
CPC分类号： H04B10/2537 , H04B10/532
摘要： In a repeaterless optical fiber transmission system, the invention proposes providing polarization scrambling means. This makes it possible to limit the amount of energy that is transferred by the Raman effect, while increasing the amount of power that can be injected into the link. The invention is equally applicable to the lightwaves used for carrying information and to the lightwaves used for pumping.
摘要翻译： 在无中继的光纤传输系统中，本发明提出提供偏振加扰装置。 这使得可以通过增加可以注入到链路中的功率量来限制由拉曼效应传送的能量的量。 本发明同样适用于用于携带信息的光波和用于泵送的光波。
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公开(公告)号：US5379148A
公开(公告)日：1995-01-03
申请号：US961117
申请日：1992-10-14
申请人： Jean-Pierre Blondel , Jose Chesnoy
发明人： Jean-Pierre Blondel , Jose Chesnoy
IPC分类号： G02B6/00 , G02B6/02 , G02B6/24 , H01S3/06 , H01S3/07 , H01S3/10 , H04B10/17 , G02B6/26 , G02B6/42 , H04B10/16
CPC分类号： H04B10/291 , H04B10/2912 , H04B2210/003
摘要： Transmission line sections in a connection comprise passive portions transmitting the signal without compensating for its natural attenuation and occupying 15% to 65% of the length of the section. They also include active portions that amplify the signal. The invention is particularly applicable to making intercontinental connections.
摘要翻译： 连接中的传输线路部分包括传送信号的无源部分，而不补偿其自然衰减并占据部分长度的15％至65％。 它们还包括放大信号的有源部分。 本发明特别适用于进行洲际连接。
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8.发明授权System for transmission over a repeaterless optical fiber line, with remote and local amplification 失效通过无中继光纤线路传输的系统，具有远程和本地放大
公开(公告)号：US5561553A
公开(公告)日：1996-10-01
申请号：US489768
申请日：1995-06-13
CPC分类号： H04B10/2937 , H04B10/291 , H04B10/2912 , H04B10/675
摘要： A system for transmission over a repeaterless optical fiber line between an emitter and a receiver terminal, the system being of the type implementing remote optical amplification and local optical amplification on reception. The remote optical amplification consists in sending a pump beam from the receiver terminal towards at least one remote section of doped fiber situated upstream in said optical fiber line, said receiver terminal including, in particular, pumping means enabling said pump beam to be generated and enabling it to be injected into said optical fiber line. The terminal also includes means for performing said local optical amplification. According to the invention, said means for implementing local optical amplification are constituted by at least one local section of doped fiber situated within said receiver terminal between said pumping means and said optical fiber line.
摘要翻译： 一种用于在发射器和接收器端子之间的无中继光纤线路上传输的系统，该系统是在接收时实现远程光放大和局部光放大的类型。 远程光放大包括将泵浦光束从接收器端子发送到位于所述光纤线路上游的至少一个掺杂光纤的远程部分，所述接收器终端特别包括使得能够产生所述泵浦波束的泵送装置 它被注入到所述光纤线路中。 终端还包括用于执行所述局部光放大的装置。 根据本发明，用于实现本地光放大的所述装置由位于所述泵装置和所述光纤线路之间的所述接收器端子内的至少一个掺杂光纤局部部分构成。
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9.发明授权Telecommunications system having fiber optical amplifiers for transmitting signals over long distances 失效具有用于长距离传输信号的光纤放大器的电信系统
公开(公告)号：US5251061A
公开(公告)日：1993-10-05
申请号：US872177
申请日：1992-04-22
IPC分类号： G02B6/00 , G02F1/35 , H01S3/06 , H01S3/07 , H01S3/094 , H01S3/17 , H04B10/16 , H04B10/17 , H01S3/30 , G02C6/26
CPC分类号： H04B10/2933 , H04B10/2912
摘要： A telecommunications system having erbium-doped fiber optical amplifiers for transmitting signals including at least one signal at a wavelength of about 1550 nm, wherein the amplifiers are fibers whose cores are doped with erbium and germanium and are free from aluminum; and wherein for each of the amplifiers, the length of the fiber and the pumping power which is injected therein are such that the noise generated by the fiber is generally emitted around 1550 nm. As can be seen in FIG. 4 , the signal-to-noise ratio remains satisfactory after 10,000 km of propagation without using an intermediate filter.
摘要翻译： 一种具有铒掺杂光纤放大器的电信系统，用于传输包括至少一个在约1550nm波长的信号的信号，其中放大器是其芯掺杂有铒和锗并且不含铝的光纤; 并且其中对于每个放大器，光纤的长度和其中注入的泵浦功率使得由光纤产生的噪声通常在1550nm附近发射。 从图中可以看出 如图4所示，在不使用中间滤波器的情况下，信号噪声比在10,000km的传播之后保持令人满意。
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