公开(公告)号：US08575540B2

公开(公告)日：2013-11-05

申请号：US12670864

申请日：2008-07-25

Applicant: Mario Martinelli ,  Pierpaolo Boffi ,  Riccardo Belli ,  Stefano Avanzi

Inventor： Mario Martinelli ,  Pierpaolo Boffi ,  Riccardo Belli ,  Stefano Avanzi

IPC: G01N21/25 ,  G01J3/50

CPC classification number: G01K11/32

Abstract: A filter for an optical fibre temperature sensor comprising at least one first and one second optical filter for filtering an optical pulse reflected by said optical fibre, characterised in that said at least one first and one second optical filter comprise standard commercial filters complying with ITU specifications, said optical pulse lying within the range from 1570 nm to 1580 nm.

Abstract translation: 一种用于光纤温度传感器的滤光器，包括至少一个第一和第二滤光器，用于对由所述光纤反射的光脉冲进行滤波，其特征在于，所述至少一个第一和第二滤光器包括符合ITU规范的标准商业滤波器 所述光脉冲在1570nm至1580nm的范围内。

公开(公告)号：US20100277798A1

公开(公告)日：2010-11-04

申请号：US12739840

申请日：2007-12-21

Applicant: Paolo Martelli ,  Mario Martinelli ,  Aldo Righetti

Inventor： Paolo Martelli ,  Mario Martinelli ,  Aldo Righetti

IPC: G02B5/30

CPC classification number: H04J14/06 ,  G02B5/3083 ,  G02F1/0121 ,  G02F1/0136

Abstract: A method of stabilizing the state of polarization of an optical radiation comprises: 1) applying sequentially to the optical radiation a first and a second controllable phase retardation; 2) detecting an optical power of at least a first polarized portion of the optical radiation obtained after step 1; 3) applying sequentially to the optical radiation obtained after step 1 a third and a fourth controllable phase retardation; 4) detecting an optical power of a further polarized portion of the optical radiation obtained after step 3; 5) controlling, responsive to the optical power of said first polarized portion, the second controllable phase retardation so as to maintain the polarization state of the optical radiation obtained after step 1 at a defined great circle r on a Poincare sphere; 6) in case the second controllable phase retardation reaches a first limit value, commuting the first controllable phase retardation between first and second values; 7) controlling, responsive to the optical power of said further polarized portion, the fourth controllable phase retardation so as to maintain the polarization state of the optical radiation obtained after step 3 at a defined state of polarization; 8) in case the fourth controllable phase retardation reaches a second limit value, commuting the third controllable phase retardation between third and fourth values, keeping constant the first controllable phase retardation while the third controllable phase retardation is commuting between said third and fourth values. A polarization stabilizing device based on the method above is also disclosed.

Abstract translation: 稳定光辐射的偏振状态的方法包括：1）顺序地施加到光辐射第一和第二可控相位延迟; 2）检测在步骤1之后获得的光辐射的至少第一极化部分的光功率; 3）顺序地施加到在步骤1之后获得的光辐射，第三和第四可控相位延迟; 4）检测在步骤3之后获得的光辐射的另一极化部分的光功率; 5）响应于所述第一极化部分的光功率控制第二可控相位延迟，以便将在步骤1之后获得的光辐射的极化状态保持在庞加莱球上的确定的大圆圈r; 6）在第二可控相位延迟达到第一极限值的情况下，使第一和第二值之间的第一可控相位延迟相乘; 7）响应于所述另外的偏振部分的光焦度来控制第四可控相位延迟，以便将在步骤3之后获得的光辐射的偏振状态保持在限定的偏振状态; 8）在第四可控相位延迟达到第二极限值的情况下，使第三和第四值之间的第三可控相位延迟通过，在第三可控相位延迟在所述第三和第四值之间通勤时，保持第一可控相位延迟恒定。 还公开了一种基于上述方法的偏振稳定装置。

公开(公告)号：US07307722B2

公开(公告)日：2007-12-11

申请号：US10485221

申请日：2002-07-30

Applicant: Mario Martinelli ,  Paolo Martelli ,  Silvia Maria Pietralunga

Inventor： Mario Martinelli ,  Paolo Martelli ,  Silvia Maria Pietralunga

IPC: G01J4/00

CPC classification number: G02F1/0136

Abstract: A polarization stabilizing device and method based on controlling the phase retardation of a pair of variable phase retarders with a controller such that the first of the variable retarders has its phase retardation switched between first and second values whenever the phase retardation of the second of the variable retarders reaches an upper or a lower limit. The upper and lower limits of the second retarder and the first and second values of the first retarder are chosen so that discontinuities in the power of the output optical signal are avoided when the first variable retarder is switched, thereby providing endless polarization stabilization using phase retarders that themselves have only limited retardation ranges.

Abstract translation: 一种偏振稳定装置和方法，其基于通过控制器控制一对可变相位延迟器的相位延迟，使得第一可变延迟器的第一和第二值之间的相位延迟在第一和第二值之间切换， 缓凝剂达到上限或下限。 选择第二延迟器的上限和下限以及第一延迟器的第一值和第二值，使得当第一可变延迟器被切换时避免输出光信号的功率的不连续性，由此使用相位延迟器提供无限极化稳定 它们本身只有有限的延迟范围。

公开(公告)号：US06941032B2

公开(公告)日：2005-09-06

申请号：US09883241

申请日：2001-06-19

Applicant: Mario Martinelli ,  Paolo Martelli ,  Angelo Barberis

Inventor： Mario Martinelli ,  Paolo Martelli ,  Angelo Barberis

IPC: G02B6/126 ,  G02B6/26 ,  G02B6/34 ,  G02B27/28 ,  H04B10/135 ,  G02B6/27 ,  G02B6/12

CPC classification number: G02B6/2746 ,  G02B6/126 ,  G02B6/34 ,  G02B27/286 ,  H04B10/2572

Abstract: In an interferometer configuration, a retarder in the form of a half-wave plate (125) and a phase shifter in the form of a glass plate (120) are arranged in one arm (114). The phase shifter provides an optical path difference between the interferometer arms which needs to be greater than the coherence length of the input light to be polarization stabilized. A polarizer in the form of a linear polarizer (118) aligned at 45° to the half-wave plate is arranged across both interferometer arms (114 & 116). Polarization stabilization action is achieved by the retarder in combination with the polarizer. More specifically, for at least one input polarization state, the polarization states in the two interferometer arms are rendered orthogonal by the retarder, the polarizer being aligned to allow only one of the two orthogonal states to be transmitted, the other being absorbed. The device is expected to find application for WDM networks based on broadband sources, such as superluminescent diodes. The device is also expected to be useful for providing a front-end polarization stabilization of the signal supplied to optical elements that are sensitive to the polarization state of their input. Examples of such elements are semiconductor optical amplifiers, integrated optical splitters and electro-optical switches.

Abstract translation: 在干涉仪配置中，在一个臂（114）中布置了半波片（125）形式的延迟器和玻璃板（120）形式的移相器。 移相器提供干涉仪臂之间的光程差，其需要大于要偏振稳定的输入光的相干长度。 以与半波片成45°的方式对齐的线性偏振器（118）形式的偏振器布置在两个干涉仪臂（114和116）之间。 偏振稳定作用通过缓凝剂与偏振器的组合来实现。 更具体地，对于至少一个输入偏振状态，两个干涉仪臂中的偏振状态由延迟器使其正交，偏振器被对准以允许仅传递两个正交状态中的一个，另一个被吸收。 该设备预计可以应用于基于宽带光源的WDM网络，如超发光二极管。 该装置还可用于提供对其输入的极化状态敏感的提供给光学元件的信号的前端偏振稳定。 这些元件的示例是半导体光放大器，集成光分路器和电光开关。

公开(公告)号：US20050041911A1

公开(公告)日：2005-02-24

申请号：US10497009

申请日：2001-11-30

Applicant: Mario Martinelli ,  Andrea Paganini ,  Silvia Pietralunga ,  Andrea Zappettini

Inventor： Mario Martinelli ,  Andrea Paganini ,  Silvia Pietralunga ,  Andrea Zappettini

IPC: G02B6/35 ,  G02F1/33 ,  H04Q11/00 ,  G02B6/26

CPC classification number: H04Q11/0005 ,  G02B6/3542 ,  G02B6/3546 ,  G02B6/356 ,  G02B6/3578 ,  G02F1/33 ,  H04Q2011/0024 ,  H04Q2011/0035 ,  H04Q2011/0058

Abstract: Optical switch matrix having at least an input matrix port defining at least a row of the matrix, a plurality of output matrix ports defining columns of the matrix, a plurality of switching elements, each one being disposed at the intersection of at least one row and one of the columns. Each switch element in a predetermined position of the matrix, in an activated condition, connects an input matrix port to an output matrix port, the ports being correspondents respectively to the predetermined position of the matrix.

Abstract translation: 光开关矩阵具有至少限定矩阵的至少一行的输入矩阵端口，限定矩阵列的多个输出矩阵端口，多个开关元件，每个开关元件设置在至少一行和 其中一列。 矩阵的预定位置中的每个开关元件处于激活状态，将输入矩阵端口连接到输出矩阵端口，端口分别对应于矩阵的预定位置。

公开(公告)号：US06542269B1

公开(公告)日：2003-04-01

申请号：US09397640

申请日：1999-09-16

Applicant: Mario Martinelli ,  Guido Alberto Maier ,  Lorenzo Ghioni ,  Achille Pattavina

Inventor： Mario Martinelli ,  Guido Alberto Maier ,  Lorenzo Ghioni ,  Achille Pattavina

IPC: H04J1408

CPC classification number: H04B10/299 ,  G02F2203/26 ,  H04Q11/0005 ,  H04Q2011/0013 ,  H04Q2011/0041

Abstract: An optical device comprises an input for an input optical impulse and an optical beam splitting element for supplying, from the input optical impulse, a first pair and a second pair of optical impulses. Also included is a first optical delay element to delay, by a predetermined time, at least one of the first pair of optical impulses and a second optical delay element to delay, by a predetermined time, at least one of the second pair of optical impulses. A first optical processing element supplies a first output optical signal to a first output when commanded by the first pair of optical impulses and a second optical processing element supplies a second output optical signal to a second output when commanded by the second pair of optical impulses.

Abstract translation: 光学装置包括用于输入光脉冲的输入和用于从输入光脉冲提供第一对和第二对光脉冲的光束分离元件。 还包括第一光学延迟元件，以在预定时间内延迟第一对光学脉冲中的至少一个和第二光学延迟元件，以在预定时间内延迟第二对光学脉冲中的至少一个 。 当由第一对光脉冲命令时，第一光学处理元件将第一输出光信号提供给第一输出，并且当由第二对光脉冲命令时，第二光学处理元件将第二输出光信号提供给第二输出。

公开(公告)号：US06275311B1

公开(公告)日：2001-08-14

申请号：US09107131

申请日：1998-06-30

Applicant: Pierpaolo Boffi ,  Guido Alberto Maier ,  Mario Martinelli

Inventor： Pierpaolo Boffi ,  Guido Alberto Maier ,  Mario Martinelli

IPC: H04B1000

CPC classification number: G06E1/00 ,  H04Q11/0003 ,  H04Q11/0066 ,  H04Q2011/0041 ,  Y10S359/90

Abstract: An optical device to perform an asynchronous and parallel processing of a N bits serial stream of an optical digital signal comprises a) a serial to parallel converter which converts the serial stream of N bits into a first parallel pattern of N bits carrying the same information as the serial stream of N bits; b) an optical system to produce, from the parallel pattern of N bits, a first two-dimensional (2-D) image made of N rows and M columns (N×M) of bits, each column being associated to the digital optical signal by a predetermined relationship; c) a logic device to perform logic operations on the bits of the first 2-D image; and d) a device to send to an output the results of the logic operations.

Abstract translation: 执行光数字信号的N位串行流的异步和并行处理的光学装置包括a）串行到并行转换器，其将N位的串行流转换为携带相同信息的N位的第一并行模式， 串行流N位; b）从N比特的并行模式产生由N行和M列（N×M）位构成的第一二维（2-D）图像的光学系统，每列与数字光信号相关联，数字光信号由 预定关系; c）用于对所述第一2D图像的比特执行逻辑运算的逻辑设备; 以及d）向输出发送逻辑运算结果的装置。

公开(公告)号：US06259552B1

公开(公告)日：2001-07-10

申请号：US09564500

申请日：2000-05-04

Applicant: Pierpaolo Boffi ,  Lucia Marazzi ,  Mario Martinelli

Inventor： Pierpaolo Boffi ,  Lucia Marazzi ,  Mario Martinelli

IPC: G02F1365

CPC classification number: H04B10/299 ,  G02F1/3519 ,  G02F2/004

Abstract: There is provided an optical wavelength converter which allows the rapid and efficient shifting of information modulated on a light signal of one wavelength to a light signal of a second wavelength without the negative effects of noise and other disturbances which have proven to be problems in the prior art. The device splits a CW probe signal of a first wavelength into two components, which propagate with opposite orientations through a Kerr leg. Also propagating in the Kerr leg is a modulated drive signal at a second wavelength. These signals interact in the Kerr leg, and are recombined at an output coupler so as to create interference between the two probe components. An intensity modulated probe signal is output.

Abstract translation: 提供了一种光学波长转换器，其允许将在一个波长的光信号上调制的信息快速有效地移位到第二波长的光信号，而不会产生噪声和其他干扰的负面影响，这已被证明是先前的问题 艺术。 该设备将第一波长的CW探测信号分成两个分量，它们通过克尔分支以相反的方向传播。 在克尔腿部中传播也是第二波长的调制驱动信号。 这些信号在Kerr支路中相互作用，并在输出耦合器处重组，以便在两个探头部件之间产生干扰。 输出强度调制探测信号。

公开(公告)号：US06181429B2

公开(公告)日：2001-01-30

申请号：US09218297

申请日：1998-12-22

Applicant: Angelo Barberis ,  Stefano Caselli ,  Silvia Maria Pietralunga ,  Mario Martinelli

Inventor： Angelo Barberis ,  Stefano Caselli ,  Silvia Maria Pietralunga ,  Mario Martinelli

IPC: G01B902

CPC classification number: G01N21/45

Abstract: There is provided a method and apparatus for measuring the optical properties of bulk samples. A probe laser beam is fed into the two arms of the apparatus, a reference arm and a measurement arm, both of which contain optical fiber to conduct the laser lights. The measurement arm includes a free space area for mounting a sample to be tested. The probe beam is directed into the sample in free space. The sample also receives light in free space, rather than via the optical fiber, from a second, pump laser. The interaction of the sample and the pump laser affect the optical properties of the sample. This change in optical properties can be detected by comparing the output signals from the measurement and reference arms.

Abstract translation: 提供了用于测量散装样品的光学性质的方法和装置。 探针激光束被馈送到装置的两个臂中，一个参考臂和一个测量臂，它们都包含用于传导激光的光纤。 测量臂包括用于安装待测样品的自由空间区域。 探头光束在自由空间中被引导到样品中。 样品也从第二个泵激光器接收自由空间而不是通过光纤的光。 样品和泵浦激光器的相互作用影响样品的光学性质。 可以通过比较测量和参考臂的输出信号来检测光学特性的这种变化。

公开(公告)号：US6167170A

公开(公告)日：2000-12-26

申请号：US96567

申请日：1998-06-12

Applicant: Pierpaolo Boffi ,  Mario Martinelli ,  Davide Piccinin

Inventor： Pierpaolo Boffi ,  Mario Martinelli ,  Davide Piccinin

IPC: G02F1/01 ,  G02F1/03 ,  G02B6/26 ,  H04J14/00

CPC classification number: G02F1/0338 ,  G02F1/0126

Abstract: Optical switching device comprising:a) first elementary switching module which in turn comprises i) a crystalline element without internal planes of separation and which is capable of rotating the plane of polarization of a polarized optical signal by a predetermined angle under the action of an optical control beam, and ii) a polarization analyzer capable of selecting, according to a predetermined plane, the said polarized optical signal issuing from the said crystalline element, b) first means for supplying the said polarized optical signal to the said elementary switching module, and c) second means for supplying the said optical control beam to the said elementary switching module, in which the said first and second means route at least two different polarized optical signals and at least one optical control beam in the said crystalline element such that the said at least one control beam is substantially collinear with and superimposed on the said at least two polarized optical signals.

Abstract translation: 1.一种光学开关装置，包括：a）第一基本开关模块，其又包括i）没有内部分离平面的结晶元件，其能够在光学作用下将偏振光信号的偏振平面旋转预定角度 控制光束，以及ii）能够根据预定平面选择从所述晶体元件发出的所述偏振光信号的极化分析器，b）用于将所述偏振光信号提供给所述基本切换模块的第一装置，以及 c）用于将所述光控制光束提供给所述基本切换模块的第二装置，其中所述第一和第二装置在所述晶体元件中路由至少两个不同的偏振光信号和至少一个光控制光束，使得所述 至少一个控制光束与所述至少两个偏光光学基本共线并叠加在所述至少两个偏振光学系统上 点燃