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1. 发明申请

WO0164010A3 OPTICAL AMPLIFIER AND OPTICAL TRANSMISSION SYSTEM 审中-公开
标题翻译：光放大器和光传输系统
公开(公告)号：WO0164010A3
公开(公告)日：2002-10-03
申请号：PCT/IT0000071
申请日：2000-03-03
申请人： OPTICAL TECHNOLOGIES ITALIA , VAVASSORI PAOLO , GURNARI PAOLO , SACCHI GIOVANNI , DI PASQUALE FABRIZIO
发明人： VAVASSORI PAOLO , GURNARI PAOLO , SACCHI GIOVANNI , DI PASQUALE FABRIZIO
IPC分类号： H01S3/067 , H01S3/094 , H01S3/16 , H04B10/17
CPC分类号： H01S3/06758 , H01S3/06754 , H01S3/0677 , H01S3/094003 , H01S3/094011 , H01S3/1608 , H01S2303/00
摘要： An optical transmission system includes an optical transmitting unit (10) to transmit optical signals in a transmission wavelength band above 1570 nm; an optical receiving unit to receive the optical signals; an optical fiber link optically coupling the transmitting unit to the receiving unit, at least an optical amplifying unit (100) coupled along the link and adapted to amplify the optical signals; the optical amplifying unit (100) having an amplification wavelength band including the transmission wavelength band and comprising: an input (101) for the input of the optical signals, an output (102) for the output of the optical signals, at least an erbium-doped active fiber (103a, 103b) for the amplification of the optical signals, having a first end optically coupled to the input (101) and a second end optically coupled to the output (102), a pump source (104, 106) for generating a pump radiation having a wavelength greater than 1400 nm and lower than 1470 nm, and an optical coupler (105, 107) optically coupling the pump source (104) to the active fibre (103a, 103b).
摘要翻译：光传输系统包括：光传输单元（10），用于传输1570nm以上的传输波段的光信号; 光接收单元，用于接收光信号; 至少一个光纤放大单元（100），其沿着所述链路耦合并适于放大所述光信号; 所述光放大单元（100）具有包括所述透射波长带的放大波长带，并且包括：用于输入所述光信号的输入（101），用于输出所述光信号的输出（102），至少铒用于放大光信号的有源光纤（103a，103b），具有光耦合到输入端（101）的第一端和光耦合到输出端（102）的第二端，泵浦源（104,106）用于产生波长大于1400nm且低于1470nm的泵浦辐射;以及将泵浦源（104）光学耦合到有源光纤（103a，103b）的光耦合器（105,107）。

2. 发明申请

WO2007009915A2 RAMAN AMPLIFIER STRUCTURE 审中-公开
标题翻译：拉曼放大器结构
公开(公告)号：WO2007009915A2
公开(公告)日：2007-01-25
申请号：PCT/EP2006064114
申请日：2006-07-11
申请人： ERICSSON AB , FARALLI STEFANO , BOLOGNINI GABRIELE , SACCHI GIOVANNI , DI PASQUALE FABRIZIO
发明人： FARALLI STEFANO , BOLOGNINI GABRIELE , SACCHI GIOVANNI , DI PASQUALE FABRIZIO
IPC分类号： H01S3/30 , H04B10/291
CPC分类号： H04B10/2916 , H01S3/06754 , H01S3/094046 , H01S3/094073 , H01S3/094096 , H01S3/302 , H01S5/12 , H01S5/146
摘要： A Raman amplifier structure (121, 221) for optically amplifying an input optical signal comprises an optical means (22) through which the optical signal is propagated, a first pump optical source (10) for generating a first pump radiation and at least one second pump optical source (24, 27) for generating a second pump radiation. The first and second pump optical radiations are combined and propagated in optical transmission means (22) for supplying an optical amplification of the signal through the Raman effect. The first pump optical source (10) comprises a first laser source (12) for generating a radiation with relatively low noise and relatively low power and a Raman amplifier (13) for amplifying the radiation coming from the first laser source for generating the first pump radiation. The Raman amplifier (13) comprises a second laser source (14) for generating an optical radiation having relatively higher power and noise than the first laser source and the radiation coming from the second laser source is used for counter-pumping the radiation coming from the first laser source (12) for generating the first pump radiation. This limits the amount of noise transferred from the second source (14) to the first pump radiation.
摘要翻译：一种用于光学放大输入光学信号的拉曼放大器结构（121,221），包括光学装置（22），光学信号通过该光学装置传播，第一泵浦光源（10）用于产生第一泵浦辐射和至少一个第二泵浦光源（24,27），用于产生第二泵浦辐射。第一和第二泵浦光学辐射在光学传输装置（22）中组合并传播，以通过拉曼效应提供信号的光学放大。第一泵浦光源（10）包括用于产生具有较低噪声和较低功率的辐射的第一激光源（12）以及用于放大来自第一激光源的辐射以产生第一泵浦的拉曼放大器（13）辐射。拉曼放大器（13）包括用于产生具有比第一激光源相对更高的功率和噪声的光辐射的第二激光源（14），并且来自第二激光源的辐射用于反向泵送来自第一激光源（12），用于产生第一泵浦辐射。这限制了从第二源（14）传送到第一泵浦辐射的噪声量。

3. 发明申请

WO2007009915A3 RAMAN AMPLIFIER STRUCTURE 审中-公开
公开(公告)号：WO2007009915A3
公开(公告)日：2007-01-25
申请号：PCT/EP2006/064114
申请日：2006-07-11
申请人： ERICSSON AB , FARALLI, Stefano , BOLOGNINI, Gabriele , SACCHI, Giovanni , DI PASQUALE, Fabrizio
发明人： FARALLI, Stefano , BOLOGNINI, Gabriele , SACCHI, Giovanni , DI PASQUALE, Fabrizio
IPC分类号： H01S3/30 , H04B10/17
摘要： A Raman amplifier structure (121, 221) for optically amplifying an input optical signal comprises an optical means (22) through which the optical signal is propagated, a first pump optical source (10) for generating a first pump radiation and at least one second pump optical source (24, 27) for generating a second pump radiation. The first and second pump optical radiations are combined and propagated in optical transmission means (22) for supplying an optical amplification of the signal through the Raman effect. The first pump optical source (10) comprises a first laser source (12) for generating a radiation with relatively low noise and relatively low power and a Raman amplifier (13) for amplifying the radiation coming from the first laser source for generating the first pump radiation. The Raman amplifier (13) comprises a second laser source (14) for generating an optical radiation having relatively higher power and noise than the first laser source and the radiation coming from the second laser source is used for counter-pumping the radiation coming from the first laser source (12) for generating the first pump radiation. This limits the amount of noise transferred from the second source (14) to the first pump radiation.

4. 发明申请

WO2004095738A1 COUNTER-PUMPED DISTRIBUTED RAMAN AMPLIFICATION IN WAVELENGTH DIVISION MULTIPLEX OPTICAL COMMUNICATION SYSTEMS 审中-公开
标题翻译：波分多分光纤通信系统中的反激式分布式拉曼放大
公开(公告)号：WO2004095738A1
公开(公告)日：2004-11-04
申请号：PCT/EP2004/050595
申请日：2004-04-23
申请人： MARCONI COMMUNICATIONS SPA , SUGLIANI, Simone , SACCHI, Giovanni , DI PASQUALE, Fabrizio
发明人： SUGLIANI, Simone , SACCHI, Giovanni , DI PASQUALE, Fabrizio
IPC分类号： H04B10/17
CPC分类号： H04B10/2916 , H01S3/094003 , H01S3/302
摘要： A Raman pump module (22) for generating pump radiation having a pump wavelength (λ p ) for coupling into a transmission fibre (2) of an optical wavelength division multiplex WDM communication system to provide Raman amplification of VVDM radiation counter propagating there through is disclosed. The pump module is for use in a communications system in which the WDM radiation has a transmission waveband (λ s ) and wherein the transmission fibre (2) has a zero dispersion wavelength (λm) lying midway between the transmission waveband and the pump wavelength. The module (22) comprises a Raman pump laser (18) for generating the pump radiation and decorrelating means (24) for de-correlating the longitudinal modes of the pump radiation before it is coupled into the transmission fibre.
摘要翻译：公开了一种用于产生具有用于耦合到光波分复用WDM通信系统的传输光纤（2）的泵浦波长（lambdap）的泵浦辐射的拉曼泵模块（22），以提供通过其传播的VVDM辐射计数器的拉曼放大。泵模块用于其中WDM辐射具有传输波段（lambdas）的通信系统，并且其中传输光纤（2）具有位于传输波段和泵浦波长之间的中间的零色散波长（lambdam）。模块（22）包括用于产生泵浦辐射的拉曼泵激光器（18）和去耦合装置（24），用于在耦合到传输光纤之前使泵浦辐射的纵向模式解相关。

5. 发明申请

WO2005025096A1 LOOPED OPTICAL NETWORK WITH ASE LIGHT RECIRCULATION AND LINK AND NETWORK SURVIVABILITY CONTROL SYSTEM 审中-公开
标题翻译： ASE光回收和链路和网络存储控制系统的光耦网络
公开(公告)号：WO2005025096A1
公开(公告)日：2005-03-17
申请号：PCT/EP2004/052127
申请日：2004-09-10
申请人： MARCONI COMMUNICATIONS SPA , BOGONI, Antonella , SACCHI, Giovanni , D'ERRICO, Antonio , DI PASQUALE, Fabrizio
发明人： BOGONI, Antonella , SACCHI, Giovanni , D'ERRICO, Antonio , DI PASQUALE, Fabrizio
IPC分类号： H04B10/17
CPC分类号： H04B10/27 , H04B10/275
摘要： A looped WDM optical network comprises an optical loop with optical amplifiers (12,16) between the sections of the loop (11) and with ASE recirculation in the loop. At a point of the loop a laser beam is injected and allowed to circulate in the loop with the laser beam being centered around a λ LINK wavelength where it is desired that a lasing peak be generated. This supplies high network strength in terms of section loss variations and greatly improves the OSNR of the WDM signal. High network survivability is also achievable.
摘要翻译：环路WDM光网络包括在环路（11）的部分之间的光放大器（12,16）和环路中的ASE再循环的光环路。在循环的一个点上，激光束被注入并允许在环路中循环，激光束以λLINK波长为中心，期望产生激光峰。这在节段损耗变化方面提供了很高的网络强度，并大大提高了WDM信号的OSNR。高网络生存性也是可以实现的。

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