公开(公告)号：US06519080B2

公开(公告)日：2003-02-11

申请号：US09794033

申请日：2001-02-28

申请人： Paolo Vavassori ,  Paolo Gurnari ,  Giovanni Sacchi ,  Fabrizio Di Pasquale

发明人： Paolo Vavassori ,  Paolo Gurnari ,  Giovanni Sacchi ,  Fabrizio Di Pasquale

IPC分类号： H01S330

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 fiber (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）。

公开(公告)号：US06680793B2

公开(公告)日：2004-01-20

申请号：US09992146

申请日：2001-11-14

申请人： Riccardo Sotgiu ,  Paolo Vavassori

发明人： Riccardo Sotgiu ,  Paolo Vavassori

IPC分类号： H01S300

CPC分类号： H01S3/06754 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/1301 ,  H01S3/2383

摘要： A temperature-stabilized optical amplifier (100) comprises at least an erbium-doped waveguide (101) for amplifying optical signals; at least a first and a second pump sources (103, 104) for generating respective pump beams at a first and, respectively, a second pump wavelength (&lgr;1, &lgr;2), said first and second pump wavelength being lower and, respectively, higher than 978 nm at an intermediate temperature of a predetermined range of temperature, and being subjected to drift as a consequence of temperature variations; and a pump distribution device (105), optically coupled to said pump sources for receiving said pump beams, and optically coupled to said at least an erbium-doped waveguide for feeding to said at least an erbium-doped waveguide a mixed pump radiation comprising at least a power fraction of each of said pump beams.

摘要翻译： 温度稳定型光放大器（100）至少包括用于放大光信号的掺铒波导（101） 至少第一和第二泵浦源（103,104），用于在第一和第二泵浦波长（λ1，λ2）处产生相应的泵浦波束，所述第一和第二泵浦波长较低，并且分别高于 在预定温度范围的中间温度下为978nm，并且由于温度变化而经受漂移; 和泵分配装置（105），其光耦合到所述泵浦源用于接收所述泵浦光束，并光学地耦合到所述至少掺铒波导，以馈送至所述至少掺铒波导的混合泵浦辐射，所述混合泵辐射包括 每个所述泵浦波束的功率分数最小。

公开(公告)号：US20110198170A1

公开(公告)日：2011-08-18

申请号：US13056218

申请日：2008-12-23

申请人： Simone Turani ,  Konstantin Vikulov ,  Andrea Gavazzi ,  Massimiliano Valle ,  Paolo Vavassori ,  Marco Orlandi

发明人： Simone Turani ,  Konstantin Vikulov ,  Andrea Gavazzi ,  Massimiliano Valle ,  Paolo Vavassori ,  Marco Orlandi

IPC分类号： F16D65/092 ,  F16D69/02

CPC分类号： F16D69/025 ,  C04B35/571 ,  C04B38/0022 ,  C04B2111/00362 ,  F16D65/092 ,  F16D69/027 ,  F16D2069/001 ,  F16D2069/0441 ,  F16D2069/0483 ,  F16D2200/0039 ,  F16D2200/0043 ,  F16D2200/0069 ,  F16D2200/0086 ,  C04B38/0054

摘要： Brake pad for braking systems, in particular for disc brakes, consisting of friction portion (10), tribologically active, and mechanical support portion (20) which is intended to cooperate with the actuating means of a braking system. At least friction portion (10) is made from a ceramic matrix material obtained with a method comprising the following operational steps: —preparing a mixture of at least one siliconic type ceramic precursor, of particles of hard materials suitable as abrasives, of particles of substances suitable as lubricants and particles of metal materials;—hot-pressing the mixture to obtain a preformed body;—submitting the preformed body to a process of pyrolysis in order to obtain ceramisation of the preceramic binder, thus obtaining the ceramic matrix material. The mixture comprises a catalyst suitable for favouring reticulation of said ceramic precursor during the hot-pressing step and the pyrolysis process is carried out a temperatures below 8000° C. The mechanical support portion (20) may be made in ceramic matrix material as one piece with the friction portion or it may consist of a support plate provided with lightening apertures.

摘要翻译： 用于制动系统的制动盘，特别是用于盘式制动器，由摩擦部分（10），摩擦学有效和机械支撑部分（20）构成，其旨在与制动系统的致动装置配合。 至少摩擦部分（10）由通过包括以下操作步骤的方法获得的陶瓷基体材料制成： - 制备适合作为研磨剂的硬质材料颗粒的至少一种硅型陶瓷前体的混合物， 适合作为金属材料的润滑剂和颗粒; - 压制混合物以获得预成型体; - 将预成型体提供到热解过程中，以获得陶瓷前体粘合剂的陶瓷化，从而获得陶瓷基体材料。 混合物包含适于在热压步骤期间有利于所述陶瓷前体的网状结构的催化剂，并且热解过程在低于8000℃的温度下进行。机械支撑部分（20）可以制成陶瓷基体材料作为一件 与摩擦部分或者它可以由设有减光孔的支撑板组成。

公开(公告)号：US08779763B2

公开(公告)日：2014-07-15

申请号：US12989576

申请日：2009-04-22

申请人： Riccardo Bertacco ,  Paolo Vavassori

发明人： Riccardo Bertacco ,  Paolo Vavassori

IPC分类号： G01R33/02

CPC分类号： G01N33/54346 ,  G01R33/1284

摘要： A sensor is described for detecting the presence of a magnetic nanoparticle (N). The sensor is arranged on a support (1), on which a plurality of non-magnetic contacts (Iin, GND, V1, V2) electrically conductively connected to the sensor is disposed. The contacts are adapted to be connected to means for measuring magnetoresistance. The sensor includes a planar ferromagnetic nanostructure (3), comprising a detection area (31) shaped as a strip bent to form a corner. The detection area is adapted to selectively assume, as a response to an applied magnetic field, a first spin configuration comprising a transverse “head-to-head” domain wall (TW), and a second spin configuration, wherein such domain wall (TW) is absent. The transition from the first configuration to the second configuration is affected by the proximity of a magnetic nanoparticle (N) to the detection area.

摘要翻译： 描述了用于检测磁性纳米颗粒（N）的存在的传感器。 传感器布置在支撑件（1）上，多个与传感器导电连接的非磁性触点（Iin，GND，V1，V2）设置在该支撑件上。 触点适于连接到测量磁阻的装置。 传感器包括平面铁磁性纳米结构（3），其包括形状为弯曲形成拐角的条带的检测区域（31）。 检测区域适于选择性地假设作为对所施加的磁场的响应，包括横向“头 - 头”畴壁（TW）和第二自旋构型的第一自旋配置，其中这种畴壁（TW ） 缺席。 从第一配置到第二配置的转变受到磁性纳米颗粒（N）与检测区域的接近的影响。

公开(公告)号：US20120037236A1

公开(公告)日：2012-02-16

申请号：US13148649

申请日：2010-02-12

申请人： Ricardo Bertacco ,  Matteo Cantoni ,  Marco Donolato ,  Marco Gobbi ,  Stefano Brivio ,  Paolo Vavassori ,  Daniela Petti

发明人： Ricardo Bertacco ,  Matteo Cantoni ,  Marco Donolato ,  Marco Gobbi ,  Stefano Brivio ,  Paolo Vavassori ,  Daniela Petti

IPC分类号： F15C1/00

CPC分类号： B03C1/32 ,  B03C2201/18 ,  Y10T137/0391 ,  Y10T137/206

摘要： A system and a method for the controlled manipulation of any number of magnetic particles in solution are shown. The system and the method of the present invention are based on the employment of magnetic conduits properly structured in order to inject, move and annihilate with high precision magnetic domain walls and on the fact that said magnetic domain walls exert a high attraction force on magnetic particles. The injection, movement and annihilation of domain walls along said magnetic conduit result, therefore, in the trapping, movement and release, respectively, of single magnetic particles placed in solution in proximity of said magnetic conduits. The devices of the present invention guarantee the possibility of a digital transfer of magnetic particles along conduits formed by linear segments as well as high control and nanometric precision in the manipulation of said magnetic particles on curved conduits.

摘要翻译： 示出了用于在溶液中控制任何数量的磁性颗粒的系统和方法。 本发明的系统和方法基于使用适当构造以便用高精度磁畴壁注入，移动和消除的磁导管，以及所述磁畴壁对磁性颗粒施加高吸引力的事实 。 因此，沿着磁导管的畴壁的注入，移动和湮灭导致分别在放置在所述磁导管附近的溶液中的单个磁性颗粒的捕获，移动和释放。 本发明的装置保证磁性颗粒沿着由线性段形成的导管的数字传输以及在弯曲管道上操纵所述磁性颗粒的高控制和纳米精度的可能性。

公开(公告)号：US07177511B2

公开(公告)日：2007-02-13

申请号：US10415474

申请日：2001-10-23

申请人： Paolo Vavassori ,  Alessandro Iommi

发明人： Paolo Vavassori ,  Alessandro Iommi

IPC分类号： G02B6/02 ,  G02B6/36

CPC分类号： G02B6/02047 ,  G02B6/02052 ,  G02B6/2552 ,  G02B6/29352 ,  G02B6/2938

摘要： An optical fiber filter includes an optical fiber, a pair of first coupling regions, and a phase-shift region. The optical fiber includes a core and a cladding. An optical signal can pass through the optical fiber. The first coupling regions are formed in the optical fiber, at a predefined mutual distance, for producing power transfer between first and second propagation modes of the optical signal. The phase-shift region is defined by a section of the optical fiber, disposed between the first coupling regions, for producing a phase shift between the first and second propagation modes of the optical signal. In the first coupling regions, the optical fiber includes, in cross-section, an asymmetrical refractive index profile. A related optical fiber filtering device, optical fiber, process for producing an optical filter, optical amplifier, optical telecommunications system, optical fiber modal coupler, and method for filtering an optical signal are also disclosed.

摘要翻译： 光纤滤波器包括光纤，一对第一耦合区域和相移区域。 光纤包括芯和包层。 光信号可以通过光纤。 第一耦合区域以预定的相互距离形成在光纤中，用于在光信号的第一和第二传播模式之间产生功率传输。 相移区域由设置在第一耦合区域之间的光纤部分限定，用于在光信号的第一和第二传播模式之间产生相移。 在第一耦合区域中，光纤在横截面中包括不对称的折射率分布。 还公开了一种相关的光纤滤波装置，光纤，用于制造滤光器的方法，光放大器，光通信系统，光纤模态耦合器以及用于滤波光信号的方法。

公开(公告)号：US08878638B2

公开(公告)日：2014-11-04

申请号：US13148649

申请日：2010-02-12

申请人： Ricardo Bertacco ,  Matteo Cantoni ,  Marco Donolato ,  Marco Gobbi ,  Stefano Brivio ,  Paolo Vavassori ,  Daniela Petti

发明人： Ricardo Bertacco ,  Matteo Cantoni ,  Marco Donolato ,  Marco Gobbi ,  Stefano Brivio ,  Paolo Vavassori ,  Daniela Petti

IPC分类号： H01F7/20 ,  H01F13/00 ,  B03C1/32

CPC分类号： B03C1/32 ,  B03C2201/18 ,  Y10T137/0391 ,  Y10T137/206

摘要： A system and a method for the controlled manipulation of any number of magnetic particles in solution are shown. The system and the method of the present invention are based on the employment of magnetic conduits properly structured in order to inject, move and annihilate with high precision magnetic domain walls and on the fact that said magnetic domain walls exert a high attraction force on magnetic particles. The injection, movement and annihilation of domain walls along said magnetic conduit result, therefore, in the trapping, movement and release, respectively, of single magnetic particles placed in solution in proximity of said magnetic conduits. The devices of the present invention guarantee the possibility of a digital transfer of magnetic particles along conduits formed by linear segments as well as high control and nanometric precision in the manipulation of said magnetic particles on curved conduits.

摘要翻译： 示出了用于在溶液中控制任何数量的磁性颗粒的系统和方法。 本发明的系统和方法基于使用适当构造以便用高精度磁畴壁注入，移动和消除的磁导管，以及所述磁畴壁对磁性颗粒施加高吸引力的事实 。 因此，沿着磁导管的畴壁的注入，移动和湮灭导致分别在放置在所述磁导管附近的溶液中的单个磁性颗粒的捕获，移动和释放。 本发明的装置保证磁性颗粒沿着由线性段形成的导管的数字传输以及在弯曲管道上操纵所述磁性颗粒的高控制和纳米精度的可能性。

公开(公告)号：US20110037463A1

公开(公告)日：2011-02-17

申请号：US12989576

申请日：2009-04-22

申请人： Riccardo Bertacco ,  Paolo Vavassori

发明人： Riccardo Bertacco ,  Paolo Vavassori

IPC分类号： G01R33/02

CPC分类号： G01N33/54346 ,  G01R33/1284

摘要： A sensor is described for detecting the presence of a magnetic nanoparticle (N). The sensor is arranged on a support (1), on which a plurality of non-magnetic contacts (Iin, GND, V1, V2) electrically conductively connected to the sensor is disposed. The contacts are adapted to be connected to means for measuring magnetoresistance. The sensor includes a planar ferromagnetic nanostructure (3), comprising a detection area (31) shaped as a strip bent to form a corner. The detection area is adapted to selectively assume, as a response to an applied magnetic field, a first spin configuration comprising a transverse “head-to-head” domain wall (TW), and a second spin configuration, wherein such domain wall (TW) is absent. The transition from the first configuration to the second configuration is affected by the proximity of a magnetic nanoparticle (N) to the detection area.

摘要翻译： 描述了用于检测磁性纳米颗粒（N）的存在的传感器。 传感器布置在支撑件（1）上，多个与传感器导电连接的非磁性触点（Iin，GND，V1，V2）设置在该支撑件上。 触点适于连接到测量磁阻的装置。 传感器包括平面铁磁性纳米结构（3），其包括形状为弯曲形成拐角的条带的检测区域（31）。 检测区域适于选择性地假设作为对所施加的磁场的响应，包括横向“头对头”畴壁（TW）和第二自旋构型的第一自旋配置，其中这种结构域壁（TW ） 缺席。 从第一配置到第二配置的转变受到磁性纳米颗粒（N）与检测区域的接近的影响。

公开(公告)号：US06701046B1

公开(公告)日：2004-03-02

申请号：US10089780

申请日：2002-06-18

申请人： Aurelio Pianciola ,  Paolo Vavassori ,  Valeria Corio

发明人： Aurelio Pianciola ,  Paolo Vavassori ,  Valeria Corio

IPC分类号： G02B628

CPC分类号： G02B6/2843 ,  G02B6/2835

摘要： A fused optical coupler comprising a polarization maintaining fiber and a standard fiber is provided. The cross-section of the said standard fiber is smaller than the cross-section of the polarization maintaining fiber in the area of fusion of the coupler. The internal forces in the coupling area are sufficiently low to provide an extinction ratio of more than 20 dB at the output of the polarization maintaining fiber.

摘要翻译： 提供了包括偏振保持光纤和标准光纤的融合光耦合器。 所述标准光纤的横截面小于耦合器熔化区域中的保偏光纤的横截面。 耦合区域中的内力足够低，以在偏振保持光纤的输出处提供超过20dB的消光比。

公开(公告)号：US5072113A

公开(公告)日：1991-12-10

申请号：US579866

申请日：1990-09-07

申请人： Mario Martinelli ,  Valeria Gusmeroli ,  Paolo Vavassori

发明人： Mario Martinelli ,  Valeria Gusmeroli ,  Paolo Vavassori

IPC分类号： G01D5/353 ,  G01L1/24 ,  G01N21/21 ,  G01N21/45 ,  G02B6/00 ,  G08C23/04

CPC分类号： G01L1/243 ,  G01D5/35383

摘要： In a polarimetric fibre-optic sensor using a polarization-maintaining optical fibre with two light propagation modes, a reference light signal is fed to propagate along the optical fibre in accordance with one propagation mode, a series of measurement light signals being induced by a series of optical fibre deformation elements, to propagate along the optical fibre in accordance with the other propagation mode, each being unbalanced in time with respect to the reference light signal by an amount which is different from that of the other measurement light signals; by using particular interferometric techniques, compensating the unbalances and analyzing the signals resulting from the interference between the measurement light signals and the reference light signal it is possible to determine and locate a physical phenomenon which disturbs the optical fibre.