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公开(公告)号：US20100220765A1
公开(公告)日：2010-09-02
申请号：US12670869
申请日：2008-07-25
申请人： Mario Martinelli , Riccardo Belli
发明人： Mario Martinelli , Riccardo Belli
IPC分类号： G01K11/32
CPC分类号： G01K11/32
摘要： 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
摘要翻译： 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
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公开(公告)号：US20080050063A1
公开(公告)日：2008-02-28
申请号：US11791982
申请日：2004-12-15
IPC分类号： G02B6/35
CPC分类号： G02B6/3504 , G02B6/30 , G02B6/3546 , G02B6/3564
摘要： An optical switching system includes a two-dimensional arrangement of a plurality of switching elements. Each switching element includes an optical guiding structure which includes two pairs of waveguides; a driving arrangement for individually moving the switching elements between at least a first and a second position; and a first and a second input and a second output. When a generic switching element is moved in the first position, the first pair of waveguides connects a first input with a first output, and a second input with a second output; when a generic switching element is moved in the second position, the second pair of waveguides connects the first input with the second output, and the second input with the first output. In a first embodiment, the waveguides are provided on a disc shaped carrier and lie in the same plane, which disc is rotated. In a second embodiment, the two pairs of waveguides lie in different planes and the waveguide carrier plate is moved up and down for switching.
摘要翻译： 光交换系统包括多个开关元件的二维布置。 每个开关元件包括包括两对波导的光导结构; 用于在至少第一和第二位置之间单独移动所述开关元件的驱动装置; 以及第一和第二输入和第二输出。 当通用开关元件在第一位置移动时，第一对波导将第一输入与第一输出连接，第二输入与第二输出连接; 当通用开关元件在第二位置移动时，第二对波导将第一输入与第二输出连接，第二输入与第一输出相连。 在第一实施例中，波导设置在盘形载体上并且位于相同的平面中，该盘旋转。 在第二实施例中，两对波导位于不同的平面中，并且波导载体板上下移动用于切换。
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公开(公告)号：US07324267B2
公开(公告)日：2008-01-29
申请号：US10518855
申请日：2002-06-28
CPC分类号： G02F1/3536 , G02F1/3534 , G02F1/3538 , G02F2/004 , G02F2001/3542 , G02F2201/15 , G02F2201/16 , G02F2201/17 , G02F2201/307 , G02F2202/32 , G02F2203/15
摘要： A wavelength converter device is provided for generating a converted radiation at frequency ωg through interaction between at least one signal radiation at frequency ωs and at least one pump radiation at frequency ωp, including an input for the at least one signal radiation at frequency ωs, a pump light source for generating the at least one pump radiation at frequency ωp, an output for taking out the converted radiation at frequency ωg, a structure for transmitting the signal radiation, including two optical resonators having a non-linear material, having an optical length of at least 40*λ/2, λ being the wavelength of the pump radiation, and resonating at the pump, signal and converted frequencies ωp, ωs and ωg, wherein by propagating through the structure, the pump and signal radiation generate the converted radiation by non-linear interaction within the optical resonators.
摘要翻译： 提供了一种波长转换器装置，用于通过至少一个频率ω1的信号辐射与至少一个频率ω的泵浦辐射之间的相互作用产生频率ωω的转换的辐射 包括用于频率ω3的至少一个信号辐射的输入，泵浦光源，用于产生频率ω2的至少一个泵浦辐射 ，用于取出频率ωga转换的辐射的输出，用于传输信号辐射的结构，包括具有非线性材料的两个光学谐振器，光学长度为 至少40 *λ/ 2，λ是泵浦辐射的波长，并且在泵谐振，信号和转换频率ωω，ωω和ωω 其中通过传播通过结构，泵和信号辐射通过非线性相互作用产生转换的辐射 在光谐振器内。
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公开(公告)号：US20060092500A1
公开(公告)日：2006-05-04
申请号：US10518855
申请日：2002-06-28
IPC分类号： G02F2/02
CPC分类号： G02F1/3536 , G02F1/3534 , G02F1/3538 , G02F2/004 , G02F2001/3542 , G02F2201/15 , G02F2201/16 , G02F2201/17 , G02F2201/307 , G02F2202/32 , G02F2203/15
摘要： Wavelength converter device for generating a converted radiation at frequency Ωg through interaction between at least one signal radiation at frequency Ωg and at least one pump radiation at frequency Ωg, with an input for the at least one signal radiation at frequency Ωg; a pump light source for generating the at least one pump radiation at frequency Ωg, an output for taking out the converted radiation at frequency Ωg, a structure for transmitting the signal radiation, the structure including one optical resonator having a non-linear material, having an optical length of at least 40*η/2, wavelength η being the wavelength of the pump radiation, and resonating at the pump, signal and converted frequencies Ωp, Ωs, and Ωg. The structure has a further optical resonator coupled in series to the optical resonator, the further optical resonator having a non-linear material, having an optical length of at least 40*η/2, wherein η is the wavelength of the pump radiation, and resonating at the pump, signal and converted Ωp, Ωs and Ωg, wherein by propagating through the structure, the pump and signal radiation generate the converted radiation by non-linear interaction within the optical resonators.
摘要翻译： 波长转换器装置，用于通过至少一个频率ω1的信号辐射与至少一个频率ωω的泵浦辐射之间的相互作用产生频率为ωm的转换的辐射， 具有用于频率为ωm的至少一个信号辐射的输入; 泵浦光源，用于产生频率为Ωm的至少一个泵浦辐射，用于以频率ω1取出转换的辐射的输出，用于传输信号的结构 辐射，该结构包括具有非线性材料的一个光学谐振器，其光学长度至少为40 *η/ 2，波长eta是泵浦辐射的波长，并且在泵谐振，信号和转换频率ω 。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。 该结构具有与光学谐振器串联耦合的另外的光学谐振器，该另一个光学谐振器具有非线性材料，其光学长度至少为40 *η/ 2，其中eta是泵浦辐射的波长，以及 在泵上谐振，信号和转换的欧米茄，欧米茄和欧米茄，其中通过传播通过该结构的泵和信号辐射 在光学谐振器内通过非线性相互作用产生转换的辐射。
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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。
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公开(公告)号：US06577425B1
公开(公告)日：2003-06-10
申请号：US09397639
申请日：1999-09-16
IPC分类号： H04B1000
CPC分类号： H04Q11/0066 , H04L2012/5605 , H04L2012/5636 , H04Q11/0478 , H04Q2011/0041
摘要： An optical selector for an asynchronous transfer mode (ATM) optical network, the said selector being capable of selecting ATM cells of bits having a frequency of arrival f less than or equal to a predetermined frequency (PCR), the said optical selector comprising: an input having a first device capable of blocking the entry of bits; an output having a second device capable of permitting the outflow of bits; an ATM cell recognition unit constructed in such a way that it recognizes the headers of ATM cells and connected to the said input and to the said output for the transit of bits from the said input to the said output; and an optical decision unit connected operationally to the said first device, to the said second device and the said ATM cell recognition unit.
摘要翻译： 一种用于异步传输模式（ATM）光网络的光学选择器，所述选择器能够选择具有小于或等于预定频率（PCR）的到达频率f的比特的ATM信元，所述光学选择器包括： 输入具有能够阻止比特的输入的第一设备;具有能够允许比特流出的第二设备的输出; ATM单元识别单元，其被构造成它识别ATM信元的头部并连接到所述 输入和所述输出，用于将比特从所述输入传送到所述输出; 以及与所述第一设备可操作地连接到所述第二设备和所述ATM信元识别单元的光学决策单元。
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公开(公告)号：US06373617B1
公开(公告)日：2002-04-16
申请号：US09465798
申请日：1999-12-17
IPC分类号： G02F103
CPC分类号： G02F1/0126 , G02F1/0136 , G02F1/31 , G02F2202/101 , G02F2202/106 , G02F2202/12 , G02F2202/20 , G02F2203/06 , G02F2203/07
摘要： An optical device having a first input for at least one input optical signal having a random state of polarization and a first optical element capable of dividing, in space, the input optical signal into a pair of optical signals which are substantially parallel and have a predetermined state of polarization perpendicular to each another. The optical device also having a first crystal element for propagation, in free space, of at least the pair of optical signals coming from the first optical element, and the first crystal element being devoid of internal separation planes, and having electro-optical properties and being associated with electrodes so as to apply a voltage in a direction substantially perpendicular to the direction of propagation, along the first crystal element, of the at least one pair of optical signals. The optical device also having an optical control element for supplying at least one optical control beam, having a predetermined power, to the first crystal element, the at least one optical control beam being superimposed on the at least one pair of optical signals and having a direction of propagation which along the first crystal element is substantially perpendicular to the direction of application of the voltage, the at least one optical control beam being capable of causing to rotate through a predetermined angle the state of polarization of the at least one pair of optical signals in the first crystal element. The optical device also having a second optical element capable of combining the at least one pair of optical signals coming from the first crystal element in a single output signal and a first output for the output signal.
摘要翻译： 一种光学装置，具有用于至少一个具有随机偏振状态的输入光信号的第一输入端和一个第一光学元件，该第一光学元件能够在空间上将输入光信号分成一对基本上平行并具有预定的光信号的光信号 极化状态彼此垂直。 所述光学装置还具有第一晶体元件，用于在自由空间中传播来自所述第一光学元件的至少一对光学信号，并且所述第一晶体元件没有内部分离面，并具有电光学特性， 与电极相关联，以便沿至少一对光信号的沿着第一晶体元件的基本上垂直于传播方向的方向施加电压。 所述光学装置还具有用于向所述第一晶体元件提供具有预定功率的至少一个光学控制光束的光学控制元件，所述至少一个光学控制光束叠加在所述至少一对光学信号上并具有 沿着第一晶体元件的传播方向基本上垂直于施加电压的方向，所述至少一个光学控制光束能够使预定角度旋转至少一对光学器件的偏振状态 信号在第一晶体元件。 光学装置还具有能够将来自第一晶体元件的至少一对光信号组合在单个输出信号中的第二光学元件和用于输出信号的第一输出。
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公开(公告)号：US4652129A
公开(公告)日：1987-03-24
申请号：US519311
申请日：1983-08-01
申请人： Mario Martinelli
发明人： Mario Martinelli
CPC分类号： G01B9/02057 , G01B9/02003 , G01B9/02024 , G01D5/35303 , G01H9/004 , G01J9/04 , G01B2290/70
摘要： The detector comprises an electro-optical section for the signal analysis, a transmission fibre-optic, a fibre-optic coupling of high immunity to environmental noise, and a fibre-optic sensor terminating in a reflecting element. It can be provided in either homodyne or heterodyne version (phase or frequency modulation). This latter version has the advantage of detecting phase modulations exceeding 2.pi. radians. Both the versions have the advantage of enabling measurements to be made which are not influenced by environmental disturbances affecting the transmission fibre-optic.
摘要翻译： 检测器包括用于信号分析的电光部分，传输光纤，对环境噪声具有高抗扰性的光纤耦合以及端接在反射元件中的光纤传感器。 它可以以零差或外差版本（相位或频率调制）提供。 后一版本具有检测超过2 pi弧度的相位调制的优点。 这两个版本都具有能够进行不受影响传输光纤的环境干扰影响的测量的优点。
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公开(公告)号：US08575540B2
公开(公告)日：2013-11-05
申请号：US12670864
申请日：2008-07-25
CPC分类号： G01K11/32
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20050041911A1
公开(公告)日：2005-02-24
申请号：US10497009
申请日：2001-11-30
CPC分类号： H04Q11/0005 , G02B6/3542 , G02B6/3546 , G02B6/356 , G02B6/3578 , G02F1/33 , H04Q2011/0024 , H04Q2011/0035 , H04Q2011/0058
摘要： 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.
摘要翻译： 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。
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