公开(公告)号：US5161050A

公开(公告)日：1992-11-03

申请号：US642221

申请日：1991-01-16

申请人： Giorgio Grasso ,  Aldo Righetti

发明人： Giorgio Grasso ,  Aldo Righetti

IPC分类号： G02B6/00 ,  G02B6/28 ,  G02F1/35 ,  G02F1/39 ,  H01P1/16 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/08 ,  H01S3/094 ,  H01S3/10 ,  H01S3/108 ,  H01S3/16 ,  H04B10/17

CPC分类号： H04B10/291 ,  H01S3/06708 ,  H04B10/2912 ,  H01S3/08045 ,  H01S3/094065

摘要： An optical amplifier, particularly useful for optical fiber telecommunication lines, which includes an active fiber doped with a fluorescent dopant which provides light energy emission at the wavelength of the transmission signals when the latter signals are applied thereto. One section of telecommunication line is connected to one input of a dichroic coupler, the output of which is connected to one end of the active fiber and the other input of which is connected to a source of pumping energy at a wavelength lower than that of the transmission signals. The other end of the active fiber is connected to another section of the telecommunication line. In rectilinear form, the active fiber provides single-mode propagation of the energy at the signal wavelength and multi-mode propagation of energy at the pumping energy wavelength. However, the active fiber is bent to a radius of curvature for at least 70% of its length which will provide only fundamental mode propagation at the pumping energy wavelength which also reduces the mode diameter for the transmission signals.

摘要翻译： 一种特别适用于光纤通信线路的光放大器，其包括掺杂有荧光掺杂剂的有源光纤，当将后一种信号施加于该光放大器时，其提供在传输信号波长处的光能发射。 电信线路的一部分连接到二向色耦合器的一个输入端，二极管耦合器的输出端连接到有源光纤的一端，另一个输入端连接到波长比波长 传输信号。 有源光纤的另一端连接到电信线路的另一部分。 在直线形式中，有源光纤在信号波长处提供能量的单模传播，并且在泵浦能量波长处提供能量的多模式传播。 然而，有源光纤弯曲到其长度的至少70％的曲率半径，其仅在泵浦能量波长处仅提供基模传播，这也降低了传输信号的模式直径。

公开(公告)号：US5119229A

公开(公告)日：1992-06-02

申请号：US602364

申请日：1990-10-22

申请人： Giorgio Grasso ,  Aldo Righetti ,  Flavio Fontana

发明人： Giorgio Grasso ,  Aldo Righetti ,  Flavio Fontana

IPC分类号： G02F1/35 ,  G02B6/28 ,  G02B6/34 ,  G02F1/39 ,  H01S3/06 ,  H01S3/07 ,  H01S3/0915 ,  H01S3/094 ,  H01S3/17 ,  H01S3/30 ,  H04B10/04 ,  H04B10/06 ,  H04B10/12 ,  H04B10/142 ,  H04B10/152

CPC分类号： H01S3/094003 ,  G02B6/2821

摘要： An optical amplifier (3) in accordance with the invention consists of the assembly of a length of active-core optical fiber (8), single-mode to both pumping and signal optical radiations, and a dichroic coupler (6) which includes two optical fiber lengths (9, 10), both single-mode to pumping and signal optical radiations, coupled to each other over one portion (11) by fusion of the respective claddings and substantial setting in common of the respective cores in the fused portion (11).

公开(公告)号：US08975508B2

公开(公告)日：2015-03-10

申请号：US14342169

申请日：2012-08-22

申请人： Giorgio Grasso ,  Francesco Morichetti ,  Silvia Maria Pietralunga ,  Aldo Righetti ,  Maria Chiara Ubaldi

发明人： Giorgio Grasso ,  Francesco Morichetti ,  Silvia Maria Pietralunga ,  Aldo Righetti ,  Maria Chiara Ubaldi

IPC分类号： H01L31/054 ,  H01L31/052 ,  F24J2/06 ,  F24J2/12 ,  G02B19/00 ,  H01L31/0232

CPC分类号： H01L31/0525 ,  F24S23/10 ,  F24S23/71 ,  G02B19/0028 ,  H01L31/02327 ,  H01L31/054 ,  H01L31/0547 ,  Y02E10/42 ,  Y02E10/52

摘要： A solar concentrator (1) having a longitudinal axis of extension (3) and a cross-section at right angles to the longitudinal axis substantially equal for a continuum of cross-sections, and comprising a reflective system (6) and a refractive system (7), the reflective system forming an optical inlet (8) and an optical outlet (9) and comprising two semi-portions positioned specularly relative to the plane of symmetry, where the cross-section profile of the refractive system is a triangle (11) having a base (12) at the optical outlet (9) and apex (13) on the axis of symmetry (5), where the cross-section profile of each semi-portion of the reflective system comprises a segment (18) in the shape of a parabola having an axis (20) forming with the axis of symmetry an acceptance angle (θ0) greater than zero and a focus (F) on the axis of symmetry, and where the focus falls inside the triangle.

摘要翻译： 一种具有延伸长度（3）的纵向轴线的横截面和与纵向轴线成直角的横截面基本相等于连续的横截面的太阳能集中器（1），并且包括反射系统（6）和折射系统 7），反射系统形成光学入口（8）和光学出口（9），并且包括相对于对称平面镜面定位的两个半部分，其中折射系统的横截面轮廓是三角形（11 ）在光学出口（9）处具有基部（12）和在对称轴线（5）上的顶点（13），其中反射系统的每个半部分的横截面轮廓包括一个（18） 抛物线的形状具有轴线（20），其以对称轴形成大于零的接受角（＆amp;θ）和对称轴上的焦点（F），并且其中焦点落在三角形内。

公开(公告)号：US20140209148A1

公开(公告)日：2014-07-31

申请号：US14342169

申请日：2012-08-22

申请人： Giorgio Grasso ,  Francesco Morichetti ,  Silvia Maria Pietralunga ,  Aldo Righetti ,  Maria Chiara Ubaldi

发明人： Giorgio Grasso ,  Francesco Morichetti ,  Silvia Maria Pietralunga ,  Aldo Righetti ,  Maria Chiara Ubaldi

IPC分类号： H01L31/052 ,  G02B19/00 ,  H01L31/0232

CPC分类号： H01L31/0525 ,  F24S23/10 ,  F24S23/71 ,  G02B19/0028 ,  H01L31/02327 ,  H01L31/054 ,  H01L31/0547 ,  Y02E10/42 ,  Y02E10/52

摘要： A solar concentrator (1) having a longitudinal axis of extension (3) and a cross-section at right angles to the longitudinal axis substantially equal for a continuum of cross-sections, and comprising a reflective system (6) and a refractive system (7), the reflective system forming an optical inlet (8) and an optical outlet (9) and comprising two semi-portions positioned specularly relative to the plane of symmetry, where the cross-section profile of the refractive system is a triangle (11) having a base (12) at the optical outlet (9) and apex (13) on the axis of symmetry (5), where the cross-section profile of each semi-portion of the reflective system comprises a segment (18) in the shape of a parabola having an axis (20) forming with the axis of symmetry an acceptance angle (θ0) greater than zero and a focus (F) on the axis of symmetry, and where the focus falls inside the triangle.

摘要翻译： 一种具有延伸长度（3）的纵向轴线的横截面和与纵向轴线成直角的横截面基本相等于连续的横截面的太阳能集中器（1），并且包括反射系统（6）和折射系统 7），反射系统形成光学入口（8）和光学出口（9），并且包括相对于对称平面镜面定位的两个半部分，其中折射系统的横截面轮廓是三角形（11 ）在光学出口（9）处具有基部（12）和在对称轴线（5）上的顶点（13），其中反射系统的每个半部分的横截面轮廓包括一个（18） 抛物线的形状具有轴线（20），其以对称轴形成大于零的接受角（＆amp;θ）和对称轴上的焦点（F），并且其中焦点落在三角形内。

公开(公告)号：US06191854B1

公开(公告)日：2001-02-20

申请号：US09102759

申请日：1998-06-23

申请人： Giorgio Grasso ,  Aldo Righetti ,  Paolo Ottolenghi ,  Fabio Donati

发明人： Giorgio Grasso ,  Aldo Righetti ,  Paolo Ottolenghi ,  Fabio Donati

IPC分类号： H01S300

CPC分类号： H04B10/25253 ,  H04B2210/252

摘要： Optical telecommunications system, comprising: a transmitting station capable of emitting an optical signal having a power of between 18 and 30 dBm; an optical fibre transmission line capable of transmitting the said optical signal, comprising dispersion shifted fibre with a length of between 100 km and 1000 km; an optical receiving station, capable of receiving the said optical signal; which comprises, between the said transmission line and the said optical receiver, a chromatic dispersion compensator. Preferably the said optical fibre transmission line has a length of between 200 and 400 km.

摘要翻译： 光通信系统，包括：能够发射功率在18和30dBm之间的光信号的发射台;能够传输所述光信号的光纤传输线，包括长度在100公里和 1000km;能够接收所述光信号的光接收站;在所述传输线和所述光接收器之间包括色散补偿器。优选地，所述光纤传输线的长度为200-400 公里。

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：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：US5054876A

公开(公告)日：1991-10-08

申请号：US555941

申请日：1990-07-20

申请人： Giorgio Grasso ,  Aldo Righetti ,  Flavio Fontana

发明人： Giorgio Grasso ,  Aldo Righetti ,  Flavio Fontana

IPC分类号： G02B6/44 ,  G02B6/00 ,  G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/08 ,  H01S3/094 ,  H01S3/10 ,  H04B3/46 ,  H04B10/00 ,  H04B17/02

CPC分类号： H04B10/2931 ,  H04B10/032 ,  H04B10/0775 ,  H04B10/0777 ,  H04B10/291 ,  H04B10/2912 ,  H01S3/06754 ,  H01S3/09408 ,  H04B2210/071 ,  H04B2210/074 ,  H04B2210/075

摘要： An optical fiber telecommunication line composed of a number of series connected optical cables arranged end-to-end includes an active core optical fiber amplifier for the transmitted signals between each adjacent pair of optical cables. Two pumping optical radiation sources are connected to each active core optical fiber within each of the amplifiers, one source for each end of a single active core optical fiber. One of these two sources is placed into service and the second one is kept in reserve to be placed into service if the first one fails. A microprocessing circuit causes the sources to send distinctive recognizable alarm signals indicative of the state of an associated amplifier to terminal stations at the ends of the line and to receive therefrom control signals to control and exchange the functions between the two sources as necessary.

公开(公告)号：US06288810B1

公开(公告)日：2001-09-11

申请号：US09202270

申请日：1999-05-07

申请人： Giorgio Grasso ,  Fausto Meli ,  Marcos Antonio Brandão Sanches ,  Mario Tamburello

发明人： Giorgio Grasso ,  Fausto Meli ,  Marcos Antonio Brandão Sanches ,  Mario Tamburello

IPC分类号： H04J1402

CPC分类号： H04J14/0209 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0216 ,  H04J14/0221

摘要： A multi-channel optical telecommunication system and method for transmitting optical signals having distinct wavelengths. Spectral selection is provided for the optical signals to add or drop signals of predetermined wavelengths. The signals are divided into at least two series of different wavelengths. The signals of each series are dropped or signals of corresponding wavelengths are added, and the signals are then combined.

摘要翻译： 一种用于发送具有不同波长的光信号的多声道光通信系统和方法。 为光信号提供光谱选择以添加或丢弃预定波长的信号。 信号被分成至少两个不同波长的系列。 每个系列的信号被丢弃或相应波长的信号相加，然后信号被组合。

公开(公告)号：US06437888B1

公开(公告)日：2002-08-20

申请号：US09900185

申请日：2001-07-09

申请人： Giorgio Grasso ,  Fausto Meli ,  Marcos Antonio Brandão Sanches ,  Mario Tamburello

发明人： Giorgio Grasso ,  Fausto Meli ,  Marcos Antonio Brandão Sanches ,  Mario Tamburello

IPC分类号： H04J1402

CPC分类号： H04J14/0209 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0216 ,  H04J14/0221

摘要： Device for adding/dropping optical signals into/from an optical transmission path, including input means for at least two optical signals with distinct wavelengths, comprising spectral selection means for sending at least a first signal to a first optical path and at least a second signal to a second optical path, at least a wavelength selective switching means along at least one of said first and second optical paths, for adding and dropping at least one optical signal having a predetermined wavelength selected from the optical signal wavelengths.

摘要翻译： 用于将光信号添加到/从光传输路径中的装置，包括用于具有不同波长的至少两个光信号的输入装置，包括用于将至少第一信号发送到第一光路和至少第二信号的光谱选择装置 至少沿着所述第一和第二光路中的至少一个的波长选择性切换装置，用于添加和丢弃具有从光信号波长选择的预定波长的至少一个光信号。