公开(公告)号：WO2009081237A1

公开(公告)日：2009-07-02

申请号：PCT/IB2007/055292

申请日：2007-12-21

Applicant: PGT PHOTONICS S.P.A. ,  MARTELLI, Paolo ,  MARTINELLI, Mario ,  RIGHETTI, Aldo

Inventor： MARTELLI, Paolo ,  MARTINELLI, Mario ,  RIGHETTI, Aldo

IPC: H04J14/06 ,  G02F1/01 ,  G02B27/28

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限定的大圆圈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相交，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：WO2009016457A2

公开(公告)日：2009-02-05

申请号：PCT/IB2008001943

申请日：2008-07-25

Applicant: MILANO POLITECNICO ,  MARTINELLI MARIO ,  BOFFI PIERPAOLO ,  BELLI RICCARDO ,  AVANZI STEFANO

Inventor： MARTINELLI MARIO ,  BOFFI PIERPAOLO ,  BELLI RICCARDO ,  AVANZI STEFANO

IPC: G01K11/32

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：WO2013001397A1

公开(公告)日：2013-01-03

申请号：PCT/IB2012/053018

申请日：2012-06-15

Applicant: POLITECNICO DI MILANO ,  MARTELLI, Paolo ,  GATTO, Alberto ,  MARTINELLI, Mario

Inventor： MARTELLI, Paolo ,  GATTO, Alberto ,  MARTINELLI, Mario

IPC: H04B10/13 ,  H04J14/04

CPC classification number: H04B10/2581 ,  G02B6/4206 ,  H04J14/04

Abstract: It is described an optical communication system (1). The optical communication system (1) comprises an optical transmitter (2) and a substantially circular multi-mode optical fiber (40). The optical transmitter comprises a generator (10, 11, 20) of at least two free space circular vortices (CVSL1, CVSL2) and comprises an optical element (30) configured to receive the at least two free space circular vortices and to couple them to an input facet of the optical fiber. The optical fiber is configured to receive at the input facet the at least two free space circular vortices and is configured to generate therefrom at least two corresponding guided circular vortices (CVFR1, CVFR2) having respective propagation constants (β), wherein the values of the propagation constants at a defined frequency are different each other.

Abstract translation: 描述了一种光通信系统（1）。 光通信系统（1）包括光发射机（2）和基本圆形的多模光纤（40）。 光发射机包括至少两个自由空间圆形涡流（CVSL1，CVSL2）的发生器（10,11,20），并且包括配置成接收至少两个自由空间圆形涡流并将它们耦合到 光纤的输入面。 光纤被配置为在输入面处接收至少两个自由空间圆形涡流，并且被配置为从其产生具有相应传播常数（ß）的至少两个对应的导向圆形涡流（CVFR1，CVFR2），其中， 在规定频率下的传播常数彼此不同。

公开(公告)号：WO2009016458A2

公开(公告)日：2009-02-05

申请号：PCT/IB2008/001947

申请日：2008-07-25

Applicant: POLITECNICO DI MILANO ,  MARTINELLI, Mario ,  BELLI, Riccardo

Inventor： MARTINELLI, Mario ,  BELLI, Riccardo

IPC: G01K11/32

CPC classification number: G01K11/32

Abstract: An optical fibre temperature sensor comprising: an optical pulse generator; an optical fibre into which said optical pulses are fed; an optical receiver to receive said optical pulses reflected by said optical fibre and to convert them into an electrical signal; a processor which receives said electrical signal and determines the temperature along said optical fibre; said optical receiver comprising a first filter and a second filter to filter said optical pulse reflected by said optical fibre, characterised in that said first and said second filters filter two adjacent portions of anti-Stokes optical signals or of Stokes optical signals

Abstract translation: 一种光纤温度传感器，包括：光脉冲发生器; 供给所述光脉冲的光纤; 光接收器，接收由所述光纤反射的所述光脉冲并将它们转换成电信号; 处理器，其接收所述电信号并确定沿着所述光纤的温度; 所述光接收机包括第一滤波器和第二滤波器，用于对由所述光纤反射的所述光脉冲进行滤波，其特征在于，所述第一和所述第二滤波器对反斯托克斯光信号或斯托克斯光信号的两个相邻部分进行滤波，

公开(公告)号：WO2006045324A1

公开(公告)日：2006-05-04

申请号：PCT/EP2004/011957

申请日：2004-10-22

Applicant: PIRELLI & C. S.P.A. ,  BOFFI, Pierpaolo ,  MARAZZI, Lucia ,  MARTELLI, Paolo ,  MARTINELLI, Mario ,  RIGHETTI, Aldo ,  SIANO, Rocco

Inventor： BOFFI, Pierpaolo ,  MARAZZI, Lucia ,  MARTELLI, Paolo ,  MARTINELLI, Mario ,  RIGHETTI, Aldo ,  SIANO, Rocco

IPC: H04J14/06

CPC classification number: H04J14/06 ,  G02F1/0136 ,  H04J14/02

Abstract: A device (100) and method for stabilizing the polarization of a polarization multiplexed optical radiation comprising an identified channel which is provided with a pilot signal. The device (100) and method are based on providing to the polarization multiplexed optical radiation a controllable polarization transformation; measuring the optical power of a polarized portion of the identified channel downstream the polarization transformation; controlling, responsively to said optical power, the controllable polarization transformation so that the identified channel downstream the polarization transformation has a predefined polarization azimuth; providing to the optical radiation downstream the polarization transformation a further controllable polarization transformation; measuring the optical power of a polarized portion of the identified channel downstream the further controllable polarization transformation; controlling, responsively to said optical power, the further controllable polarization transformation so that the identified channel downstream the further controllable polarization transformation has a predefined state of polarization (SOP our).

Abstract translation: 一种用于稳定偏振复用光辐射的偏振的装置（100）和方法，其包括被提供有导频信号的识别信道。 设备（100）和方法基于向偏振复用光辐射提供可控偏振变换; 测量在所述偏振变换下游的所识别的通道的极化部分的光功率; 响应于所述光功率控制所述可控偏振变换，使得所述偏振变换下游的所识别的通道具有预定义的偏振方位; 向偏光变换下游的光辐射提供进一步可控的偏振变换; 测量所识别的通道的偏振部分的光功率在下游的可控偏振变换; 响应于所述光功率控制进一步可控的偏振变换，使得在进一步可控偏振变换下游的所识别的通道具有预定义的偏振态（SOP我们）。

公开(公告)号：WO2003014811A1

公开(公告)日：2003-02-20

申请号：PCT/EP2002/008467

申请日：2002-07-30

Applicant: PIRELLI S.P.A. ,  MARTINELLI, Mario ,  MARTELLI, Paolo ,  PIETRALUNGA, Silvia, Maria

Inventor： MARTINELLI, Mario ,  MARTELLI, Paolo ,  PIETRALUNGA, Silvia, Maria

IPC: G02F1/01

CPC classification number: G02F1/0136

Abstract: A polarization stabilizing device and method based on controlling the phase retardation (ø 1 , ø 2 ) of a pair of variable phase retarders (VR1, VR2) with a controller (CTRLR) 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（CTRLR）控制一对可变相位延迟器（VR1，VR2）的相位延迟（o1，o2），使得第一可变延迟器的相位延迟在第一 以及当第二个可变延迟器的相位延迟达到上限或下限时的第二值。 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了输出光信号的功率的不连续性，从而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：WO0148541A3

公开(公告)日：2001-12-20

申请号：PCT/EP0012761

申请日：2000-12-13

Applicant: OPTICAL TECHNOLOGIES USA CORP ,  MARTINELLI MARIO ,  MARTELLI PAOLO

Inventor： MARTINELLI MARIO ,  MARTELLI PAOLO

IPC: G02B27/28 ,  G02F1/01 ,  H01S3/13 ,  G02F1/03

CPC classification number: G02B27/286 ,  G02F1/0121 ,  G02F1/0136

Abstract: A polarization stabilizer (1) for generating from an input optical signal of intensity (I) and polarization (A), an output signal having intensity and polarization substantially independent from the polarization (A), comprising: an input (3) for said input signal; a linear polarizer (6), optionally coupled to said input and having an orientation defined by an inherent axis (PP'), for selecting a portion of said input signal having linear polarization parallel to said inherent axis; an optical element (7) operatively coupled to said linear polarizer for converting said selected portion into said output signal having a circular polarization; an output (9) for said output signal; a control circuit (15) that, based on an electric signal related to the intensity of said output signal, controls the orientation of the linear polarizer.

Abstract translation: 一种用于从强度（I）和极化（A）的输入光信号产生具有与极化（A）基本上独立的强度和极化的输出信号的偏振稳定器（1），包括：用于所述输入的输入（3） 信号; 线性偏振器（6），可选地耦合到所述输入并且具有由固有轴线（PP'）限定的取向，用于选择具有平行于所述固有轴线性偏振的所述输入信号的一部分; 可操作地耦合到所述线性偏振器的光学元件（7），用于将所述选择的部分转换成具有圆偏振的所述输出信号; 用于所述输出信号的输出（9）; 基于与所述输出信号的强度相关的电信号来控制线性偏振器的取向的控制电路（15）。

公开(公告)号：WO2015140703A1

公开(公告)日：2015-09-24

申请号：PCT/IB2015/051935

申请日：2015-03-17

Applicant: MARTINELLI, Mario

Inventor： MARTINELLI, Mario

IPC: G02B27/14 ,  G02B6/28 ,  H04J14/04

CPC classification number: G02B6/29349 ,  G02B6/2766 ,  G02B6/2817 ,  G02B6/2938 ,  G02B6/29397 ,  G02B6/34 ,  G02B27/145 ,  G02B27/149 ,  H04J14/04

Abstract: Described herein is a multiplexer/demultiplexer optical device (100) comprising: a first beam-splitter cube (BS1); a second beam-splitter cube (BS2) optically coupled to the first splitter (BS1); a first Porro-prism reflector (PR1), which is optically coupled to the second splitter (BS2); and a second Porro-prism reflector (PR2), which is optically coupled to the second splitter (BS2) and is structured for introducing into optical beams that traverse it a phase delay depending upon an orbital angular momentum of the optical beams and upon an orientation of the second reflector. The device is a Michelson interferometer structured for obtaining constructive/destructive interference such as to multiplex/demultiplex on/from corresponding input/output ports, on the basis of values of orbital angular momentum, an optical beam comprising a plurality of concentric optical beams with cylindrical symmetry having different values of orbital angular momentum.

Abstract translation: 这里描述的是多路复用器/解复用器光学装置（100），包括：第一分束器立方体（BS1）; 光学耦合到第一分离器（BS1）的第二分束器立方体（BS2）; 光学耦合到第二分离器（BS2）的第一波罗棱镜反射器（PR1）; 以及光学耦合到第二分离器（BS2）的第二波罗棱镜反射器（PR2），并被构造成用于引入到根据光束的轨道角动量和朝向方向上穿过其相位延迟的光束 的第二反射器。 该装置是迈克尔逊干涉仪，其被构造用于基于轨道角动量的值获得建构性/相消干扰，例如对相应输入/输出端口进行多路复用/解复用，光束包括具有圆柱形的多个同心光束 对称性具有不同的轨道角动量值。

公开(公告)号：WO2012140186A1

公开(公告)日：2012-10-18

申请号：PCT/EP2012/056753

申请日：2012-04-13

Applicant: ALCATEL LUCENT ITALIA S.P.A. ,  MARTINELLI, Mario ,  GAVIOLI, Giancarlo ,  GALLI, Paola ,  DI MOLA, Domenico ,  PAROLARI, Paola ,  MARAZZI, Lucia ,  RAZZETTI, Luca ,  SUBERINI, Luca ,  CAMPI, Domenico

Inventor： MARTINELLI, Mario ,  GAVIOLI, Giancarlo ,  GALLI, Paola ,  DI MOLA, Domenico ,  PAROLARI, Paola ,  MARAZZI, Lucia ,  RAZZETTI, Luca ,  SUBERINI, Luca ,  CAMPI, Domenico

IPC: H04B10/145 ,  H01S5/14 ,  H01S3/106

CPC classification number: H04B10/27 ,  H01S3/08054 ,  H01S5/02284 ,  H01S5/02469 ,  H01S5/141 ,  H01S5/146 ,  H01S5/4062 ,  H01S5/4087 ,  H04B10/532

Abstract: The present document relates to the field of optical access networks. In particular, the present document relates to an optical transmitter, in particular (but not exclusively) for a WDM (Wavelength Division Multiplexing) passive optical network, and to a WDM PON comprising such an optical transmitter. An optical transmitter arrangement (7) is described. The arrangement (7) comprises a first mirror (41) and a second mirror (64) at a first end and a second end of a cavity, respectively; an optical amplifier (63) configured to amplify light polarized in a first polarization plane; wherein the optical amplifier (63) is positioned within the cavity upstream the first mirror (64); an optical waveguide (5-2) configured to transmit light from the optical amplifier (63) to the second mirror (41) and vice versa; a first non-reciprocal polarization rotator (82) positioned within the cavity upstream of the optical amplifier (63) and downstream of the optical waveguide (5-2); and a second non-reciprocal polarization rotator (81) positioned within the cavity upstream of the optical waveguide (5-2) and downstream of the first mirror (41); wherein the first (82) and second (81) non-reciprocal polarization rotators are configured to rotate the polarization of the light such that light which re-enters the optical amplifier (63) after having been reflected by the second mirror (41) is polarized in the first polarization plane.

Abstract translation: 本文件涉及光接入网络领域。 特别地，本文件涉及用于WDM（波分复用）​​无源光网络的光发射机，特别是（但不排他地））以及包括这种光发射机的WDM PON。 描述了一种光发射器装置（7）。 装置（7）分别包括位于空腔的第一端和第二端的第一反射镜（41）和第二反射镜（64） 光放大器（63），被配置为放大在第一偏振面中偏振的光; 其中所述光放大器（63）位于所述第一反射镜（64）上游的空腔内; 配置为将光从所述光放大器（63）传输到所述第二反射镜（41）的光波导（5-2），反之亦然; 位于光放大器（63）上游并位于光波导（5-2）下游的空腔内的第一非倒数偏振旋转器（82）; 以及位于所述光波导（5-2）上游并位于所述第一反射镜（41）下游的空腔内的第二非互易偏振旋转器（81）。 其中所述第一（82）和第二（81）不可逆偏振旋转器被配置为旋转所述光的偏振，使得在被所述第二反射镜（41）反射之后重新进入所述光放大器（63）的光是 在第一极化平面中极化。

公开(公告)号：WO2009016458A3

公开(公告)日：2009-03-26

申请号：PCT/IB2008001947

申请日：2008-07-25

Applicant: MILANO POLITECNICO ,  MARTINELLI MARIO ,  BELLI RICCARDO

Inventor： MARTINELLI MARIO ,  BELLI RICCARDO

IPC: G01K11/32

CPC classification number: G01K11/32

Abstract: An optical fibre temperature sensor comprising: an optical pulse generator; an optical fibre into which said optical pulses are fed; an optical receiver to receive said optical pulses reflected by said optical fibre and to convert them into an electrical signal; a processor which receives said electrical signal and determines the temperature along said optical fibre; said optical receiver comprising a first filter and a second filter to filter said optical pulse reflected by said optical fibre, characterised in that said first and said second filters filter two adjacent portions of anti-Stokes optical signals or of Stokes optical signals

Abstract translation: 1.一种光纤温度传感器，包括：光脉冲发生器; 所述光脉冲馈入其中的光纤; 光接收器，用于接收由所述光纤反射的所述光脉冲并将其转换成电信号; 接收所述电信号并确定沿着所述光纤的温度的处理器; 所述光接收机包括第一滤波器和第二滤波器，以对由所述光纤反射的所述光脉冲进行滤波，其特征在于，所述第一和第二滤波器滤除反斯托克斯光信号或斯托克斯光信号的两个相邻部分