公开(公告)号：US08200087B2

公开(公告)日：2012-06-12

申请号：US13038990

申请日：2011-03-02

申请人： Pierpaolo Boffi ,  Lucia Marazzi ,  Paolo Martelli ,  Mario Martinelli ,  Aldo Righetti ,  Rocco Siano

发明人： Pierpaolo Boffi ,  Lucia Marazzi ,  Paolo Martelli ,  Mario Martinelli ,  Aldo Righetti ,  Rocco Siano

IPC分类号： H04J14/06

CPC分类号： H04J14/06 ,  G02F1/0136 ,  H04J14/02

摘要： A device and method for stabilizing the state of polarization of polarization multiplexed optical radiation including an identified channel is disclosed. The device and method comprise providing to the polarization multiplexed optical radiation a first controllable polarization transformation to generate a first transformed optical radiation; detecting a first state of polarization of a first polarized portion with respect to a first polarization parameter; controlling the first controllable polarization transformation so that the first polarization parameter has a predetermined value independent of a polarization state of the polarization multiplexed optical radiation; providing to the first transformed optical radiation a second controllable polarization transformation to generate a second transformed optical radiation; detecting a second state of polarization of a second polarized portion; and controlling the second controllable polarization transformation so that the second state of polarization has a predefined value.

摘要翻译： 公开了一种用于稳定包括识别的通道的偏振复用光辐射的偏振状态的装置和方法。 该装置和方法包括向偏振复用光辐射提供第一可控偏振变换以产生第一变换光辐射; 检测相对于第一偏振参数的第一偏振部分的第一极化状态; 控制第一可控偏振变换，使得第一偏振参数具有与偏振复用光辐射的偏振状态无关的预定值; 向所述第一变换光辐射提供第二可控偏振变换以产生第二变换光辐射; 检测第二偏振部分的第二偏振状态; 以及控制所述第二可控偏振变换，使得所述第二极化状态具有预定义的值。

公开(公告)号：US07917031B2

公开(公告)日：2011-03-29

申请号：US11665466

申请日：2004-10-22

申请人： Pierpaolo Boffi ,  Lucia Marazzi ,  Paolo Martelli ,  Mario Martinelli ,  Aldo Righetti ,  Rocco Siano

发明人： Pierpaolo Boffi ,  Lucia Marazzi ,  Paolo Martelli ,  Mario Martinelli ,  Aldo Righetti ,  Rocco Siano

IPC分类号： H04J14/06

CPC分类号： H04J14/06 ,  G02F1/0136 ,  H04J14/02

摘要： A device and method for stabilizing the polarization of polarization multiplexed optical radiation includes an identified channel which is provided with a pilot signal. The device 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 the 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; and controlling, responsively to the optical power, the further controllable polarization transformation so that the identified channel downstream the further controllable polarization transformation has a predefined state of polarization.

摘要翻译： 用于稳定偏振复用光辐射的偏振的装置和方法包括被提供有导频信号的识别信道。 该装置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; 响应于光功率控制可控偏振变换，使得偏振变换下游的识别信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; 并且响应于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识别信道具有预定的偏振状态。

公开(公告)号：US06259552B1

公开(公告)日：2001-07-10

申请号：US09564500

申请日：2000-05-04

申请人： Pierpaolo Boffi ,  Lucia Marazzi ,  Mario Martinelli

发明人： Pierpaolo Boffi ,  Lucia Marazzi ,  Mario Martinelli

IPC分类号： G02F1365

CPC分类号： H04B10/299 ,  G02F1/3519 ,  G02F2/004

摘要： 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.

摘要翻译： 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：US06766072B2

公开(公告)日：2004-07-20

申请号：US09915401

申请日：2001-07-27

申请人： Lucia Marazzi ,  Mario Martinelli ,  Paola Parolari

发明人： Lucia Marazzi ,  Mario Martinelli ,  Paola Parolari

IPC分类号： G02B612

CPC分类号： H01S5/50 ,  H01S5/4068 ,  H01S5/509

摘要： An optical device for providing threshold and comparison functions. The device comprises first and second SOA's having respective first and second propagation paths along which the first and second optical signals, input as signals Pin1(&lgr;1) and Pin2(&lgr;2) travel in first and second forward directions. A feedback path is provided using couplers to interconnect the outputs of the SOA's. As a result, a portion of the optical signals output from each SOA is supplied backwards into the output of the other SOA as feedback optical control signals Pfeedback1(&lgr;1) and Pfeedback2(&lgr;2). The feedback optical control signals modulate the gain of the forwards travelling optical signals by cross gain modulation (XGM). In contrast to prior art devices, the optical control signal is supplied backwards into the SOA's in a counter-propagating configuration. This allows much shorter feedback path lengths to be achieved in comparison to what is possible with prior art co-propagating configurations. Consequently, much higher bit rates can be achieved. The device may also be implemented in planar waveguide technology.

摘要翻译： 一种用于提供阈值和比较功能的光学装置。 该装置包括具有相应的第一和第二传播路径的第一和第二SOA，沿信号Pin1（λ1）和Pin2（λ2）输入的第一和第二光信号沿第一和第二传播路径沿第一和第二正向行进。 使用耦合器提供反馈路径来互连SOA的输出。 结果，从每个SOA输出的光信号的一部分被反向提供给另一个SOA的输出，作为反馈光控制信号Pfeedback1（λ1）和Pfeedback2（λ<2>）。 反馈光控制信号通过交叉增益调制（XGM）调制前向行进光信号的增益。 与现有技术的装置相反，光学控制信号以反向传播配置向后提供给SOA。 与现有技术的共同传播配置相比，可以实现更短的反馈路径长度。 因此，可以实现更高的比特率。 该器件还可以在平面波导技术中实现。

公开(公告)号：US20140029945A1

公开(公告)日：2014-01-30

申请号：US14007354

申请日：2012-04-13

申请人： Mario Martinelli ,  Giancarlo Gavioli ,  Paola Galli ,  Domenico Di Mola ,  Paola Parolari ,  Lucia Marazzi ,  Luca Razzetti ,  Luca Suberini ,  Domenico Campi

发明人： Mario Martinelli ,  Giancarlo Gavioli ,  Paola Galli ,  Domenico Di Mola ,  Paola Parolari ,  Lucia Marazzi ,  Luca Razzetti ,  Luca Suberini ,  Domenico Campi

IPC分类号： H04B10/27 ,  H04B10/532

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

摘要： An optical transmitter for a WDM (Wavelength Division Multiplexing) passive optical network (PON) and a WDM PON comprising such an optical transmitter are disclosed. An optical transmitter comprises first mirror and second mirrors at first end and second ends of a cavity; an optical amplifier positioned within the cavity upstream from the first mirror and for amplifying light polarized in a first polarization plane; an optical waveguide for transmitting light from the optical amplifier to the second mirror and vice versa; a first non-reciprocal polarization rotator upstream of the optical amplifier and downstream of the optical waveguide; and a second non-reciprocal polarization rotator upstream of the optical waveguide and downstream of the first mirror; wherein the first and second non-reciprocal polarization rotators rotate the polarization of the light such that light which re-enters the optical amplifier after having been reflected by the second mirror is polarized in the first polarization plane.

摘要翻译： 公开了一种用于WDM（波分复用）​​无源光网络（PON）和包括这种光发射机的WDM PON的光发射机。 光学发射器包括在腔的第一端和第二端处的第一反射镜和第二反射镜; 光放大器，位于第一反射镜上游的空腔内，用于放大在第一偏振面中偏振的光; 用于将光从光放大器传输到第二反射镜的光波导，反之亦然; 在光放大器的上游和光波导的下游的第一非倒数偏振旋转器; 以及在所述光波导上游和所述第一反射镜的下游的第二非倒数偏振旋转器; 其中所述第一和第二非可逆偏振旋转器使所述光的偏振旋转，使得在被所述第二反射镜反射之后重新进入所述光放大器的光在所述第一偏振面中被偏振。

公开(公告)号：US20060140636A1

公开(公告)日：2006-06-29

申请号：US10536807

申请日：2002-11-29

申请人： Lucia Marazzi ,  Mario Martinelli ,  Andrea Melloni ,  Livio Paradiso ,  Paola Parolari

发明人： Lucia Marazzi ,  Mario Martinelli ,  Andrea Melloni ,  Livio Paradiso ,  Paola Parolari

IPC分类号： H04B10/12

CPC分类号： H04B10/25137 ,  H04B10/25253

摘要： An optical communication system has a transmitter generating a phase-modulated optical signal (Sa, Sb, . . . , Sk); a receiver for receiving the phase-modulated optical signal; an optical communication link between the transmitter section and the receiver section. The optical communication link is a dispersion-managed optical communication link having dispersion-compensating elements propagating the phase-modulated optical signal at substantially constant optical power. The receiver has a dispersive element having a prescribed dispersion, the dispersive element receiving and converting the phase-modulated optical signal into a corresponding intensity-modulated optical signal, and an optical intensity detector fed with the intensity-modulated optical signal.

摘要翻译： 光通信系统具有产生相位调制光信号（Sa，Sb ...，Sk）的发射机; 用于接收相位调制光信号的接收机; 在发射机部分和接收机部分之间的光通信链路。 光通信链路是色散管理的光通信链路，其色散补偿元件以基本恒定的光功率传播相位调制的光信号。 接收器具有具有规定色散的色散元件，色散元件接收并将相位调制光信号转换为对应的强度调制光信号，以及馈送有强度调制光信号的光强度检测器。

公开(公告)号：US07031047B2

公开(公告)日：2006-04-18

申请号：US10914260

申请日：2004-08-09

申请人： Paola Parolari ,  Lucia Marazzi

发明人： Paola Parolari ,  Lucia Marazzi

IPC分类号： G02F1/35

CPC分类号： G02F2/004 ,  G02F1/3519

摘要： A wavelength converter or demultiplexer device comprising first and second stages (30, 40). For wavelength converter action, the first stage impresses an intensity modulation (IM) and phase modulation (PM) on a CW input signal (λ1) carried by an input DATA signal (λ2) using cross phase modulation in a non-linear optical element (46). The first stage in an embodiment is a semiconductor laser amplifier loop optical mirror (SLALOM) which has a semiconductor optical amplifier (SOA) as the non-linear optical element. The second stage has a non-linear transfer function and impresses a further IM on the optical signal responsive to the PM impressed in the first stage. In an embodiment, the second stage is a polarization maintaining fiber (PMF) optical loop. The transfer function of the overall device is thus improved by making it steeper and more time confined. This is achieved by combining a fast first stage with a second stage that has a non-linear transfer function, so that the residual PM from the first stage synchronously drives a nonlinear process in the second stage.

摘要翻译： 一种包括第一和第二级（30,40）的波长转换器或多路分解器装置。 对于波长转换器动作，第一级在由输入DATA信号（λ2> 2）承载的CW输入信号（λ<1> 1）上施加强度调制（IM）和相位调制（PM） / SUB>）在非线性光学元件（46）中使用交叉相位调制。 实施例中的第一阶段是具有作为非线性光学元件的半导体光放大器（SOA）的半导体激光放大器环路光学镜（SLALOM）。 第二级具有非线性传递函数，并且响应于在第一级中印制的PM而对光信号施加进一步的IM。 在一个实施例中，第二级是偏振维持光纤（PMF）光环路。 因此，整体装置的传递功能通过使其更陡和更多时间受限而得到改善。 这通过将快速第一阶段与具有非线性传递函数的第二阶段组合来实现，使得来自第一阶段的残余PM同步地驱动第二阶段中的非线性过程。

公开(公告)号：US20050012983A1

公开(公告)日：2005-01-20

申请号：US10914260

申请日：2004-08-09

申请人： Paola Parolari ,  Lucia Marazzi

发明人： Paola Parolari ,  Lucia Marazzi

IPC分类号： G02F1/35 ,  G02F2/00

CPC分类号： G02F2/004 ,  G02F1/3519

摘要： A wavelength converter or demultiplexer device comprising first and second stages (30, 40). For wavelength converter action, the first stage impresses an intensity modulation (IM) and phase modulation (PM) on a CW input signal (λ1) carried by an input DATA signal (λ2) using cross phase modulation in a non-linear optical element (46). The first stage in an embodiment is a semiconductor laser amplifier loop optical mirror (SLALOM) which has a semiconductor optical amplifier (SOA) as the non-linear optical element. The second stage has a non-linear transfer function and impresses a further IM on the optical signal responsive to the PM impressed in the first stage. In an embodiment, the second stage is a polarization maintaining fiber (PMF) optical loop. The transfer function of the overall device is thus improved by making it steeper and more time confined. This is achieved by combining a fast first stage with a second stage that has a non-linear transfer function, so that the residual PM from the first stage synchronously drives a nonlinear process in the second stage.

摘要翻译： 一种包括第一和第二级（30,40）的波长转换器或多路分解器装置。 对于波长转换器动作，第一阶段使用非线性光学元件中的交叉相位调制在由输入DATA信号（λ2）承载的CW输入信号（λ1）上施加强度调制（IM）和相位调制（PM） 46）。 实施例中的第一阶段是具有作为非线性光学元件的半导体光放大器（SOA）的半导体激光放大器环路光学镜（SLALOM）。 第二级具有非线性传递函数，并且响应于在第一级中印制的PM而对光信号施加进一步的IM。 在一个实施例中，第二级是偏振维持光纤（PMF）光环路。 因此，整体装置的传递功能通过使其更陡和更多时间受限而得到改善。 这通过将快速第一阶段与具有非线性传递函数的第二阶段组合来实现，使得来自第一阶段的残余PM同步地驱动第二阶段中的非线性过程。