公开(公告)号：US06657777B1

公开(公告)日：2003-12-02

申请号：US10006741

申请日：2001-12-05

申请人： Fausto Meli ,  Fabrizio Di Pasquale ,  Giovanni Sacchi

发明人： Fausto Meli ,  Fabrizio Di Pasquale ,  Giovanni Sacchi

IPC分类号： H04J1402

CPC分类号： H04B10/2916 ,  H01S3/06708 ,  H01S3/2383 ,  H01S3/302

摘要： A modular interleaved Raman amplifier structure is exploited to reap the advantages provided by the high Raman gain coefficient and small effective area of highly nonlinear fibers without incurring penalties caused by nonlinear effects and double-Rayleigh backscattering noise. Very tight WDM channel spacings may be accommodated. The amplifier structure may be implemented at very low initial cost and with high reliability, scalability, and modularity.

摘要翻译： 利用模块交错拉曼放大器结构，可以获得高拉曼增益系数和高非线性光纤有效面积的优势，而不会产生由非线性效应和双瑞利后向散射噪声引起的惩罚。 可能容纳非常紧密的WDM通道间隔。 放大器结构可以以非常低的初始成本和高可靠性，可扩展性和模块化来实现。

公开(公告)号：US06646786B1

公开(公告)日：2003-11-11

申请号：US10139467

申请日：2002-05-06

申请人： Fausto Meli ,  Fabrizio Di Pasquale

发明人： Fausto Meli ,  Fabrizio Di Pasquale

IPC分类号： H01S300

CPC分类号： H04B10/2916 ,  H01S3/302 ,  H04B10/2563

摘要： Four-wave mixing crosstalk between co-propagating Raman amplification pump sources and WDM channels is suppressed. Therefore, co-propagating pumping may be applied to Raman amplification without incurring penalties due to four-wave mixing crosstalk. Pump power need not be substantially increased to accommodate use of the present invention. Also, the use of lower cost Fabry-Perot pump sources is facilitated. In one implementation, the advantageous suppression of four-wave mixing crosstalk between pump signals and WDM channels is accomplished by imposing chromatic dispersion on the co-propagating pump sources.

摘要翻译： 共传播拉曼放大泵浦源和WDM通道之间的四波混频串扰被抑制。 因此，可以将共传播泵送到拉曼放大，而不会由于四波混频串扰而引起惩罚。 泵功率不需要大幅增加以适应本发明的使用。 此外，更便宜的使用较低成本的法布里 - 珀罗泵浦源。 在一个实现中，通过在共同传播的泵浦源上施加色散来实现对泵浦信号和WDM信道之间的四波混频串扰的有利抑制。

公开(公告)号：US06961522B1

公开(公告)日：2005-11-01

申请号：US09717036

申请日：2000-11-22

申请人： Roberta Castagnetti ,  Fabrizio Di Pasquale ,  Giorgio Grasso ,  Fausto Meli ,  Giovanni Sacchi

发明人： Roberta Castagnetti ,  Fabrizio Di Pasquale ,  Giorgio Grasso ,  Fausto Meli ,  Giovanni Sacchi

IPC分类号： H04B10/00 ,  H04B10/17 ,  H04J14/02

CPC分类号： H04B10/2931 ,  H04B10/2916 ,  H04J14/0221

摘要： An approach for automatic Raman gain and tilt control for a WDM (Wavelength Division Multiplexing) optical communication systems is disclosed. An optical fiber carries a plurality of optical signals, in which at least one of the optical signals are reference signals. An optical gain unit (e.g., Raman pump unit) couples to the optical fiber and adjusts the reference signals to compensate, in part, for losses associated with the optical fiber and gain tilt accumulation. Upon detecting and analyzing the reference signals, a controller controls the optical gain unit and outputs a control signal to the optical gain unit based upon the analyzed reference signals. An optical amplifier is connected to the optical fiber and amplifies the optical signals. The optical gain unit provides a nearly constant power per channel at an input of the optical amplifier. Under this approach, a Raman gain control mechanism, combined with the use of gain controlled EDFA (Erbium Doped Fiber Amplifier), allows high transmission capacity over ultra-long distances without optical regeneration and with high flexibility.

摘要翻译： 公开了一种用于WDM（波分复用）​​光通信系统的自动拉曼增益和倾斜控制的方法。 光纤携带多个光信号，其中至少一个光信号是参考信号。 光增益单元（例如，拉曼泵单元）耦合到光纤并且调整参考信号以部分地补偿与光纤相关联的损耗和增益倾斜积累。 在检测和分析参考信号时，控制器控制光学增益单元，并且基于分析的参考信号向光学增益单元输出控制信号。 光放大器连接到光纤并放大光信号。 光学增益单元在光放大器的输入处提供每通道几乎恒定的功率。 在这种方法下，拉曼增益控制机制与增益控制EDFA（掺铒光纤放大器）结合使用，可实现超长距离的高传输容量，无需光学再生和高灵活性。

公开(公告)号：US06621626B1

公开(公告)日：2003-09-16

申请号：US10010015

申请日：2001-12-05

申请人： Fausto Meli ,  Fabrizio Di Pasquale ,  Giovanni Sacchi

发明人： Fausto Meli ,  Fabrizio Di Pasquale ,  Giovanni Sacchi

IPC分类号： H01S300

CPC分类号： H04B10/294 ,  H04B2210/258

摘要： An advantageous amplification architecture for DWDM systems including systems with very high capacity is provided. A modular interleaved structure for amplification is provided. Advantages include robustness to non-linear effects, modular as-needed deployment of system capacity, and low noise figure in implementations that incorporate Raman amplification technology.

摘要翻译： 提供了包括具有非常高容量的系统的DWDM系统的有利的放大架构。 提供了用于放大的模块化交错结构。 优点包括对非线性效应的鲁棒性，系统容量的模块化的必要部署以及结合拉曼放大技术的实现中的低噪声系数。

公开(公告)号：US06556346B1

公开(公告)日：2003-04-29

申请号：US09400275

申请日：1999-09-21

申请人： Fabrizio Di Pasquale ,  Fausto Meli ,  Giovanni Sacchi ,  Silvia Turolla

发明人： Fabrizio Di Pasquale ,  Fausto Meli ,  Giovanni Sacchi ,  Silvia Turolla

IPC分类号： H01S300

CPC分类号： H04B10/291 ,  G02B6/03633 ,  H01S3/06716 ,  H01S3/06758 ,  H01S3/0677 ,  H01S3/1003 ,  H01S3/1608 ,  H01S3/1618 ,  H01S2301/04

摘要： An optical amplifying unit (100; 100′) for amplifying optical signals in an optical transmission system has an amplification wavelength band with a lower wavelength limit greater than 1570 nm and includes an input (101) for the input of optical signals, an output (102) for the output of optical signals and an optical amplifier (104) interposed between the input (101) and the output (102) to amplify the optical signals. The optical amplifier (104) includes an amplification fiber (108) co-doped with erbium and ytterbium, at least a pump source (109, 110) to generate pump radiation and at least an optical coupler (111, 112) optically coupling the pump sources (109, 110) to the amplification fiber (108). The optical amplifying unit has a power gain of at least 31 dB when the optical signals have an input power of at least −10.5 dBm and wavelengths within the amplification wavelength band.

摘要翻译： 用于在光传输系统中放大光信号的光放大单元（100; 100'）具有大于1570nm的较低波长极限的放大波段，并包括用于输入光信号的输入（101），输出（ 102）和插入在输入（101）和输出（102）之间的光放大器（104）以放大光信号。 光放大器（104）包括与铒和镱共掺杂的放大光纤（108），至少一个泵浦源（109,110）以产生泵浦辐射，并且至少一个光耦合器（111,112）将泵 源（109,110）到放大光纤（108）。 当光信号具有至少-10.5dBm的输入功率和放大波段内的波长时，光放大单元具有至少31dB的功率增益。

公开(公告)号：US07809268B2

公开(公告)日：2010-10-05

申请号：US11276742

申请日：2006-03-13

申请人： Fausto Meli ,  Gabriele Maria Galimberti

发明人： Fausto Meli ,  Gabriele Maria Galimberti

IPC分类号： H04J14/02

CPC分类号： H04J14/0227 ,  H04J14/0246 ,  H04J14/0284 ,  H04L9/0852

摘要： A method for integrating an Optical Service Channel (OSC) with a Quantum Key Distribution (QKD) channel across a DWDM network having a single mode optical fiber is provided. An optical signal is received. An OSC is coupled with the optical signal. A QKD channel is integrated with the OSC on the single mode optical fiber.

摘要翻译： 提供了一种用于在具有单模光纤的DWDM网络上集成光学服务信道（OSC）与量子密钥分发（QKD）信道的方法。 接收光信号。 OSC与光信号耦合。 QKD通道与单模光纤上的OSC集成。

公开(公告)号：US07692850B1

公开(公告)日：2010-04-06

申请号：US12400470

申请日：2009-03-09

申请人： Fausto Meli ,  Rosanna Pastorelli ,  Roberta Castagnetti

发明人： Fausto Meli ,  Rosanna Pastorelli ,  Roberta Castagnetti

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H04B10/2916 ,  H01S3/06758 ,  H01S3/06766 ,  H01S3/0677 ,  H01S3/094015 ,  H01S3/094096 ,  H01S3/302 ,  H01S2301/04

摘要： Improved lumped Raman amplification systems are disclosed. A lumped Raman amplification structure provides optimized efficiency, low noise figure over a range of gain settings, and a high saturation threshold. Responsibility for amplifying different portions of the spectrum is divided among multiple stages. In one particular implementation, two outer stages amplify a first band and two inner stages amplify a second band. The two inner stages also apply a small amount of amplification to the first band. A modification improves noise figure in the second band by adding some amplification in the second band to the first stage.

摘要翻译： 公开了改进的集总拉曼放大系统。 集中拉曼放大结构提供优化的效率，在一定范围的增益设置下的低噪声系数和高饱和阈值。 放大光谱不同部分的责任分为多个阶段。 在一个具体实现中，两个外部级放大第一频带，两个内部级放大第二频带。 两个内部阶段也对第一个波段施加少量的放大。 修改通过将第二频带中的一些放大增加到第一级来改善第二频带中的噪声系数。

公开(公告)号：US07359634B1

公开(公告)日：2008-04-15

申请号：US10632993

申请日：2003-08-01

申请人： Fausto Meli

发明人： Fausto Meli

IPC分类号： H04B10/12

CPC分类号： H04B10/077

摘要： Optical connection verification schemes that do not cause electromagnetic interference. An all-optical connection verification scheme exploits optical coding based on a standard color scale such as RGB (red, green, blue). An RGB LED source is used to launch a three-color optical signal where the relative (or absolute) magnitudes of the color components identify the connection. On the receiver end, an RGB photodiode measures the relative (or absolute) magnitudes of the color components to verify the connection. Alternatively, one end of the connection may transmit white light with the other end reflecting back a similar three-color signal by use of a color-coded panel reflector.

摘要翻译： 不产生电磁干扰的光连接验证方案。 全光学连接验证方案利用基于诸如RGB（红色，绿色，蓝色）的标准色标的光学编码。 RGB LED光源用于发射三色光信号，其中颜色分量的相对（或绝对）幅度标识连接。 在接收器端，RGB光电二极管测量颜色分量的相对（或绝对）幅度以验证连接。 或者，连接的一端可以透射白光，另一端通过使用彩色编码的面板反射器反射类似的三色信号。

公开(公告)号：US20070212063A1

公开(公告)日：2007-09-13

申请号：US11276742

申请日：2006-03-13

申请人： Fausto Meli ,  Gabriele Galimberti

发明人： Fausto Meli ,  Gabriele Galimberti

IPC分类号： H04B10/08

CPC分类号： H04J14/0227 ,  H04J14/0246 ,  H04J14/0284 ,  H04L9/0852

摘要： A method for integrating an Optical Service Channel (OSC) with a Quantum Key Distribution (QKD) channel across a DWDM network having a single mode optical fiber is provided. An optical signal is received. An OSC is coupled with the optical signal. A QKD channel is integrated with the OSC on the single mode optical fiber.

摘要翻译： 提供了一种用于在具有单模光纤的DWDM网络上集成光学服务信道（OSC）与量子密钥分发（QKD）信道的方法。 接收光信号。 OSC与光信号耦合。 QKD通道与单模光纤上的OSC集成。

公开(公告)号：US06456406B1

公开(公告)日：2002-09-24

申请号：US09261630

申请日：1999-03-03

申请人： Fulvio Arecco ,  Fausto Meli ,  Marcos Antonio Brandao Sanches

发明人： Fulvio Arecco ,  Fausto Meli ,  Marcos Antonio Brandao Sanches

IPC分类号： H04J1402

CPC分类号： H04J14/0283 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0219 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0293 ,  H04J14/0294 ,  H04J14/0295

摘要： An optical self-healing-ring communication network is described which includes: a first optical communication line, forming a closed optical path; at least two add/drop nodes for optical signals, optically connected along the line; a second optical communication line forming a closed optical path and optically connected to the optical-signal add/drop nodes. Defined in the network are first and second mutually opposite. travel directions of the optical signals, with respect to the position of the optical-signal add/drop nodes. At least one of said nodes further comprises selection means, controlled by the optical signals, for the selective dropping of the optical signals from one of the communication lines. At least one of the optical-signal add/drop nodes further includes means for the simultaneous input of at least one optical signal in the first direction along the first communication line and in the second direction along the second communication line.

摘要翻译： 描述了一种光学自愈环通信网络，其包括：形成封闭光路的第一光通信线路; 用于光信号的至少两个加/落节点，沿着该线光学连接; 第二光通信线路形成封闭的光路并且光连接到光信号加/分节点。 在网络中定义的是第一和第二相互相反的。 相对于光信号加/减节点的位置，光信号的行进方向。 所述节点中的至少一个还包括由光信号控制的选择装置，用于从一个通信线路选择性地丢弃光信号。 至少一个光信号添加/分出节点还包括用于沿着第一通信线路沿着第一方向并沿第二通信线路沿第二方向同时输入至少一个光信号的装置。