公开(公告)号：US5777766A

公开(公告)日：1998-07-07

申请号：US739166

申请日：1996-10-30

申请人： Flavio Fontana ,  Pierluigi Franco ,  Ilaria Cristiani

发明人： Flavio Fontana ,  Pierluigi Franco ,  Ilaria Cristiani

IPC分类号： G02F1/35 ,  G02F2/00 ,  H04B10/00 ,  H04L7/00

CPC分类号： H04L7/0075

摘要： The device and method are based on tapping off a predetermined line signal fraction and inputting it, together with a continuous pumping radiation, to a resonant cavity which comprises a non-linear wave guide. The value of the pumping wavelength is related to the wavelength of the line signal pulses to produce therewith a four-wave mixing (FWM) effect in the non-linear wave guide. In travelling the non-linear wave guide, a clone signal is generated by FWM effect which duplicates the pulse sequence of the line signal at a clone wavelength. By adjusting the length of the resonant cavity such that, in inputting the line signal, each of its pulses will come in at exactly a pulse of the clone signal which is being circulated within the cavity, a clone signal can be circulated within the resonant cavity whose pulse sequence represents the optical clock signal sought.

摘要翻译： 该装置和方法是基于将预定的线信号分数抽出，并将其与连续泵浦辐射一起输入到包括非线性波导的谐振腔。 泵浦波长的值与在线信号脉冲的波长相关，以在非线性波导中产生四波混频（FWM）效应。 在行进非线性波导中，通过FWM效应产生克隆信号，该克隆信号在克隆波长处复制线信号的脉冲序列。 通过调节谐振腔的长度，使得在输入线路信号时，其每个脉冲将精确地进入正在腔内循环的克隆信号的脉冲，克隆信号可以在谐振腔内循环 其脉冲序列表示所寻求的光时钟信号。

公开(公告)号：US5712716A

公开(公告)日：1998-01-27

申请号：US561085

申请日：1995-11-20

申请人： Stefano Vanoli ,  Mario Tamburello

发明人： Stefano Vanoli ,  Mario Tamburello

IPC分类号： H04J14/00 ,  H04B10/02 ,  H04B10/08 ,  H04B10/158 ,  H04B10/18 ,  H04J14/02

CPC分类号： H04J14/0227 ,  H04B10/077 ,  H04B10/07955 ,  H04J14/0241 ,  H04J14/0246 ,  H04J14/0279 ,  H04J14/028

摘要： A multi-wavelength optical telecommunication method includes the steps of generating at least one optical transmission signal in a predetermined wavelength band, transmitting the optical transmission signal through an optical fiber to a receiving station, receiving the optical transmission signal through a passband filter and filtering the signal to let the transmission signal alone pass. The wavelength band is scanned in order to identify in the band a recognizable portion of the optical spectrum being received, thus determining, based on the operating conditions corresponding to said recognizable spectrum portion, a search range of said transmission signal within which the transmission signal is searched out and recognized based on its spectral profile.

摘要翻译： 多波长光通信方法包括以下步骤：在预定波长带中生成至少一个光传输信号，通过光纤将光传输信号发送到接收站，通过通带滤波器接收光传输信号，并过滤 信号使传输信号单独通过。 扫描波长带以便在频带中识别正在接收的光谱的可识别部分，从而基于与所述可识别频谱部分相对应的操作条件来确定发送信号的发送信号的搜索范围 根据其光谱分布进行搜索并识别。

公开(公告)号：US5638204A

公开(公告)日：1997-06-10

申请号：US156880

申请日：1993-11-23

申请人： Giorgio Grasso ,  Aldo Righetti ,  Fausto Meli

发明人： Giorgio Grasso ,  Aldo Righetti ,  Fausto Meli

IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/00 ,  G02B6/10

CPC分类号： H01S3/06708 ,  H01S3/094011 ,  H01S3/1693

摘要： An optical fiber power amplifier, particularly for telecommunication lines with optical fibers, including an active fiber doped with Erbium as a fluorescing substance, and with Al.sub.2 O.sub.3 as refraction index modifying dopant. The fiber is pumped with a laser providing a wavelength higher than 520 nm and preferably, 980 nm. The amplifier has a particularly high amplification efficiency close to the theoretical maximum efficiency.

摘要翻译： 一种光纤功率放大器，特别是用于具有光纤的电信线路，包括掺杂有铒作为荧光物质的有源光纤，以及Al 2 O 3作为折射率修饰掺杂剂。 纤维用提供高于520nm，优选980nm的波长的激光器泵送。 该放大器具有接近理论最大效率的特别高的放大效率。

公开(公告)号：US5589123A

公开(公告)日：1996-12-31

申请号：US411421

申请日：1995-03-27

申请人： Francesco Portas

发明人： Francesco Portas

IPC分类号： F16G11/00 ,  H02G15/18 ,  B29C67/00

CPC分类号： F16G11/00 ,  H02G15/1833 ,  Y10T29/4987 ,  Y10T29/53657 ,  Y10T428/1328 ,  Y10T428/139 ,  Y10T428/15 ,  Y10T428/24298 ,  Y10T428/24314 ,  Y10T428/24645

摘要： There is proposed a tubular supporting element of a sleeve for covering a junction of cables provided with a wall that has a non-passing incision directed according to a helical line, having a mouth with a width of less than 0.1 mm, preferably less than 0.05 mm, so as to accomplish a strip having a substantially rectangular cross-section; a process and an apparatus for accomplishing the abovementioned tubular element have also been developed.

摘要翻译： 提出了一种用于覆盖具有壁的电缆的连接处的套管的管状支撑元件，所述电缆的连接处具有根据螺旋线导向的不通过的切口，所述口具有小于0.1mm，优选小于0.05的宽度 mm，以便实现具有基本上矩形横截面的条带; 也已经开发了用于实现上述管状元件的工艺和设备。

公开(公告)号：US5267073A

公开(公告)日：1993-11-30

申请号：US957623

申请日：1992-10-06

申请人： Mario Tamburello ,  Giorgio Grasso

发明人： Mario Tamburello ,  Giorgio Grasso

IPC分类号： H04B10/29 ,  H04B10/16 ,  H04B10/00

CPC分类号： H04B10/29

摘要： Adapters for interconnecting optical fiber lines, including optical amplifiers, with optical transmitters and receivers in which the operating parameters of the optical amplifiers are different from the operating parameters of the transmitters and receivers. The adapters convert the optical signals from a transmitter to those within the operating parameters of the optical amplifier and convert the optical signals from an optical amplifier to those within the operating parameters of the receiver. The adapter receiving the optical signals from the transmitter also has provision for inserting service signals and the adapter receiving signals from an optical amplifier has provision for separating the optical signals from the service signals. Also, switching devices for changing transmitters and/or receivers or lines in the event of component failures.

摘要翻译： 用于将光纤线路（包括光放大器）与光发射机和接收机互连的适配器，其中光放大器的操作参数与发射机和接收机的操作参数不同。 适配器将来自发射机的光信号转换成光放大器的工作参数内的光信号，并将来自光放大器的光信号转换成接收机工作参数内的信号。 接收来自发射机的光信号的适配器还具有用于插入业务信号的规定，并且来自光放大器的适配器接收信号具有将光信号与业务信号分离的条件。 而且，在组件故障的情况下，用于改变发射器和/或接收器或线路的开关装置。

公开(公告)号：US5210808A

公开(公告)日：1993-05-11

申请号：US699920

申请日：1991-05-14

申请人： Giorgio Grasso ,  Aldo Righetti

发明人： Giorgio Grasso ,  Aldo Righetti

IPC分类号： G02B6/42 ,  H01S3/00 ,  H01S3/067 ,  H04B10/17 ,  H04B9/00 ,  G02B6/26

CPC分类号： H04B10/291 ,  G02B6/4208 ,  H01S3/0064 ,  H01S3/06754 ,  H04B10/2912 ,  H01S2301/02

摘要： Active-fiber optical amplifier connected to optical fiber lines or a telecommunication signal source through energy reflection limiting means, such as optical isolators, for limiting the reflected energy, due to Rayleigh scattering, which reaches the active fiber, to permit increased amplifier gain. The input of the active fiber is connected to a dichroic coupler which is also connected to a pumping energy source by an optical fiber having a bevelled end surface or an antireflection coating at the energy source end to limit reflection of energy to the active fiber. Also, a telecommunication system including one or more of such protected amplifiers.

摘要翻译： 通过能量反射限制装置（例如光隔离器）连接到光纤线路或电信信号源的有源光纤放大器，用于限制由于到达有源光纤的瑞利散射引起的反射能量，以允许增加的放大器增益。 有源光纤的输入端连接到二向色耦合器，该二向色耦合器也通过在能量源端具有倾斜端面或抗反射涂层的光纤连接到泵浦能源，以限制能量对有源光纤的反射。 而且，包括这种受保护放大器中的一个或多个的电信系统。

公开(公告)号：US5185841A

公开(公告)日：1993-02-09

申请号：US789295

申请日：1991-11-08

申请人： Claudio Bosisio ,  Antonio Campana

发明人： Claudio Bosisio ,  Antonio Campana

IPC分类号： C03C25/10 ,  G02B1/04 ,  G02B6/00 ,  G02B6/44

CPC分类号： G02B6/4492 ,  C03C25/106 ,  G02B1/048

摘要： The optical fibre element comprises at least one optical fibre housing constituted by a polyolefin material having at least one additive which protects it against degradation due to oxidation, heat or the proximity of metals, and (b) at least one H.sub.2 -absorbing buffer. The additive is selected from the group comprising anti-oxidants, stabilizers and metal deactivators which cause a reduction in the hydrogen absorption capacity of less than 30% in the, or each, H.sub.2 -absorbing buffer when the, or each, buffer has been in contact with said polyolefin containing the, or each, additive for 30 days at 100.degree. C. in an air atmosphere saturated with water vapor at 150 mbar.

公开(公告)号：US5150444A

公开(公告)日：1992-09-22

申请号：US723441

申请日：1991-06-27

申请人： Claudio Bosisio ,  Antonio Campana

发明人： Claudio Bosisio ,  Antonio Campana

IPC分类号： C03C25/24 ,  C08K3/00 ,  C08K5/00 ,  C08K5/098 ,  C08L83/04 ,  C08L83/07 ,  C09D183/04 ,  C09D183/07 ,  G02B6/44

CPC分类号： G02B6/4492 ,  C08K3/0075 ,  C08K5/0091 ,  C08K5/098

摘要： An optical fibers cable and the relative components comprise a barrier mixture, to protect the optical fibers, comprising (a) at least a silicon unsaturated organic compound having more than 0.2 mmoles of unsaturated groups per 100 g of said compound, (b) at least a catalyst selected from the group comprising inorganic and organic complexes of transition metals and organic salts of transition metals; said barrier mixture is a further object of the invention and consists of an homogeneous phase.

公开(公告)号：US5127076A

公开(公告)日：1992-06-30

申请号：US671537

申请日：1991-03-19

申请人： Luciano Lepri ,  Alessandro Ginocchio

发明人： Luciano Lepri ,  Alessandro Ginocchio

IPC分类号： G02B6/24 ,  G02B6/38 ,  G02B6/40 ,  G02B6/44

CPC分类号： G02B6/2558 ,  G02B6/3801 ,  G02B6/4407 ,  G02B6/4439 ,  G02B6/4489

摘要： A joint, and a method for forming such joint, between two optical fiber cables or cores having closed-helix grooves each loosely receiving at least one optical fiber. A cylindrical body having open-helix grooves is interposed between the two cores so that the latter grooves interconnect corresponding grooves of the cores. The ends of the optical fibers are joined, and the fibers are then placed in the grooves of the cylindrical body.

公开(公告)号：US5113459A

公开(公告)日：1992-05-12

申请号：US647141

申请日：1991-01-29

申请人： Giorgio Grasso ,  Mario Tamburello

发明人： Giorgio Grasso ,  Mario Tamburello

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

CPC分类号： H04B10/291 ,  H04B10/0777 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/028 ,  H04B2210/078

摘要： An optical fiber transmission line which includes units for injecting into, and units for extracting, optical service signals from the line's optical fiber. The units include optical service signal emitters and receivers for receiving from the optical line and/or injecting into the optical line service signals in the form of optical signals having a wavelength which is substantially different from the wavelength of the telecommunication signals also transmitted over the optical line, each of the units is associated with an optical coupler which is inserted in the line and which is suitable for coupling it with the line fiber and/or for extracting the optical service signals from the line fiber.