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公开(公告)号：US10061081B2
公开(公告)日：2018-08-28
申请号：US15524005
申请日：2015-11-03
发明人： Luciano Socci , Marco Romagnoli
CPC分类号： G02B6/126 , G02B6/1228 , G02B6/14 , G02B2006/12116
摘要： In an integrated polarization splitting and rotating photonic device comprising at least one first waveguide; a second waveguide, both said waveguides extending from an input section to an output section; a top cladding; a bottom cladding and a symmetry-breaking layer so as to form an optical guiding structure in a wafer chip, said top and bottom claddings extending throughout the whole optical guiding structure sandwiching said waveguides therebetween, said symmetry-breaking layer extends in the optical guiding structure at least over the whole guiding structure length, and, at the input section, the at least one first waveguide core has a predetermined width through the optical guiding structure to the output section, receiving an input light signal, and further, the second waveguide core, both at the input and the output section, has a width narrower than said predetermined width of the first waveguide core; so that the optical guiding structure guides a first mode substantially confined within said at least one first waveguide core and a second mode substantially confined within said second semiconductor waveguide core said first and said second modes having the same polarization at the output section.
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公开(公告)号：US08494318B2
公开(公告)日：2013-07-23
申请号：US12513993
申请日：2006-11-09
申请人： Lorenzo Bolla , Paola Galli , Silvia Ghidini , Giorgio Grasso , Marco Romagnoli , Luciano Socci
发明人： Lorenzo Bolla , Paola Galli , Silvia Ghidini , Giorgio Grasso , Marco Romagnoli , Luciano Socci
CPC分类号： G02B6/29395 , G02B6/12007 , G02B6/29343 , G02B6/29383 , H04J14/0206 , H04J14/021
摘要： A method of filtering an optical signal includes operating an optical filter having resonators, each having a respective free spectral range and a respective resonance falling within a first frequency band, first tuning at least one resonator with respect to at least another resonator to obtain a separation between any resonance of at least one resonator falling within an optical bandwidth with respect to a resonance of at least another resonator nearest to the any resonance, second tuning all the resonators of the optical filter so as to move all respective resonances by a respective frequency interval greater than a frequency spacing, and third tuning the at least one resonator and the at least another resonator such that a further respective resonance of each one of the resonators falls within a second frequency band, different from the first frequency band.
摘要翻译： 一种对光信号进行滤波的方法包括操作具有谐振器的滤光器，每个滤光器具有相应的自由光谱范围和落在第一频带内的相应谐振器，首先调谐至少一个谐振器至少另一谐振器以获得分离 在至少一个谐振器的至少一个谐振器相对于至少另一个最接近任何谐振的谐振器的谐振之间的谐振之间的任何谐振之间，对光滤波器的所有谐振器进行二次调谐，以便将所有相应的谐振移动相应的频率间隔 大于频率间隔，以及对所述至少一个谐振器和所述至少另一个谐振器进行第三调谐，使得每个所述谐振器的另外的相应谐振落入与所述第一频带不同的第二频带内。
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3.发明授权Optical mode transformer, in particular for coupling an optical fiber and a high-index contrast waveguide 有权光模式变压器，特别是用于耦合光纤和高折射率对比度波导公开(公告)号：US08320721B2
公开(公告)日：2012-11-27
申请号：US12919578
申请日：2008-02-29
申请人： Gaia Cevini , Paola Galli , Stefano Lorenzotti , Marco Piazza , Marco Romagnoli , Luciano Socci , Lorenzo Bolla , Silvia Ghidini
发明人： Gaia Cevini , Paola Galli , Stefano Lorenzotti , Marco Piazza , Marco Romagnoli , Luciano Socci , Lorenzo Bolla , Silvia Ghidini
IPC分类号： G02B6/30
CPC分类号： G02B6/305 , G02B6/1228
摘要： An optical mode transformer comprises a first waveguide including a first core, a first cladding and an end facet configured to be coupled to an optical fiber. The transformer further includes a second waveguide comprising a second core, a second cladding and an end directly coupled to an end of the first waveguide. A third waveguide comprises a third core and a third cladding, and is arranged with respect to the second waveguide so as to realize an evanescent optical coupling with the second waveguide. The third core includes a tapered region wherein evanescent coupling takes place, and wherein a refractive index contrast of the first waveguide is less than a refractive index contrast of the second waveguide, the refractive index contrast of the second waveguide is less than a refractive index contrast of the third waveguide, and the refractive index contrast of the third waveguide is not less than 18%.
摘要翻译： 光学模式变压器包括第一波导，其包括第一芯，第一包层和被配置为耦合到光纤的端面。 变压器还包括第二波导，其包括第二芯，第二包层和直接耦合到第一波导的端部的端部。 第三波导包括第三芯和第三包层，并且相对于第二波导布置，以实现与第二波导的渐逝光耦合。 第三芯包括其中发生ev逝耦合的锥形区域，并且其中第一波导的折射率对比度小于第二波导的折射率对比度，第二波导的折射率对比度小于折射率对比度 并且第三波导的折射率对比度不小于18％。
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公开(公告)号：US07242517B2
公开(公告)日：2007-07-10
申请号：US10518473
申请日：2002-07-31
CPC分类号： G02F1/093
摘要： Bidirectional isolating devices including non-reciprocal rotators (i.e. Faraday rotators) and wavelength selective reciprocal polarization rotators are disclosed. Each wavelength selective rotator behaves like a half-wave retarder in a first frequency range and behaves like a full-wave retarder in a second frequency range, according to a substantially periodic transfer function. The rotation has a predetermined number of birefringent elements (e.g. waveplates), the thickness and the orientation of which are chosen so as to obtain a transition between the half-wave retarder behavior and the full-wave retarder behavior in a frequency range lower than or equal to 40% of the period of the transfer function. In order to satisfy such a requirement, a relatively high number of birefringent elements is required, i.e. at least the five birefringent elements. Advantageously, the isolating device may comply with any allocation scheme for the opposite propagating signals.
摘要翻译： 公开了包括非互易旋转器（即法拉第旋转器）和波长选择性往复偏振旋转器的双向隔离装置。 每个波长选择旋转器的行为类似于第一频率范围内的半波延迟器，并且根据基本上周期的传递函数在第二频率范围内表现为类似于全波延迟器。 旋转具有预定数量的双折射元件（例如波片），其厚度和取向被选择为在半波延迟器行为和全波延迟器行为之间的转变在低于或等于 等于传递函数的40％。 为了满足这种要求，需要相对高数量的双折射元件，即至少五个双折射元件。 有利地，隔离装置可以符合相反传播信号的任何分配方案。
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公开(公告)号：US20050018984A1
公开(公告)日：2005-01-27
申请号：US10491211
申请日：2001-09-28
IPC分类号： G02B6/34 , H04B10/2507 , H04B10/2525 , G02B6/02 , G02B6/16
CPC分类号： H04B10/25077 , G02B6/29377 , H04B10/25253
摘要： An optical transmission system having optical fibres having chromatic dispersion of alternate sign arranged in an optical path in accordance with a dispersion map appropriate for the transmission of dispersion managed solitons at a wavelength λc. The transmission system has a transmission station and a receiver station connected to the optical path. The transmission station launches at least a first optical pulse of wavelength λ1 which is different from λc on the optical path. At least one wavelength conversion device such as a phase conjugation device located along the optical path alters the wavelength of the first pulse of wavelength λ1 in such a way as to obtain a second pulse of wavelength λ2, such that λ2 is on the opposite side from λ1 with respect to λc.
摘要翻译： 一种光传输系统，其具有根据适于在波长lambdac处传输色散管理孤子的色散映射布置在光路中的具有交替符号色散的光纤。 传输系统具有连接到光路的传输站和接收站。 发射站发射波长λ1的至少第一光脉冲，其不同于光路上的兰姆达克。 至少一个波长转换装置，例如沿着光路定位的相位共轭装置，以这样的方式改变波长λ1的第一个脉冲的波长，以获得波长λ2的第二个脉冲，使得λ2在 lambda1相对于lambdac。
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公开(公告)号：US08923700B2
公开(公告)日：2014-12-30
申请号：US12087064
申请日：2005-12-28
申请人： Luciano Socci , Paola Galli , Silvia Ghidini , Marco Romagnoli
发明人： Luciano Socci , Paola Galli , Silvia Ghidini , Marco Romagnoli
CPC分类号： G02B6/12007 , G02B6/29343 , G02B6/29353 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0208 , H04J14/021 , H04J14/0212
摘要： An optical device includes an optical splitter having an input port, a first output port and a second output port and is adapted to receive at said input port a WDM optical signal including a plurality of channels equally spaced by a frequency spacing and occupying an optical bandwidth, and wherein the optical splitter is adapted to output at the first and second output ports, respectively, a first and a second portion of the optical signal; an optical combiner having a respective first and second input ports and a respective output port; a first optical path optically connecting the first output port of the optical splitter to the first input port of the optical combiner; a second optical path optically connecting the second output port of the optical splitter to the second input port of the optical combiner, a first optical filter optically coupled along the first optical path, and a second optical filter optically coupled to the second optical path and the free spectral range of both the first and the second optical filter is equal to an odd multiple of the frequency spacing and greater than half of the optical bandwidth.
摘要翻译： 光学装置包括具有输入端口，第一输出端口和第二输出端口的光分路器，并且适于在所述输入端口处接收包括以频率间隔等间隔并且占据光带宽的多个信道的WDM光信号 并且其中所述光分路器适于在所述第一和第二输出端口处分别输出所述光信号的第一和第二部分; 具有相应的第一和第二输入端口和相应的输出端口的光学组合器; 第一光路，将光分路器的第一输出端口光学地连接到光组合器的第一输入端口; 将光分路器的第二输出端口光学地连接到光组合器的第二输入端口的第二光路，沿着第一光路光学耦合的第一光学滤光器和与第二光路光学耦合的第二光学滤光器， 第一和第二滤光器的自由光谱范围等于频率间隔的奇数倍，并且大于光学带宽的一半。
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公开(公告)号：US20100183312A1
公开(公告)日：2010-07-22
申请号：US12513993
申请日：2006-11-09
申请人： Lorenzo Bolla , Paola Galli , Silvia Ghidini , Giorgio Grasso , Marco Romagnoli , Luciano Socci
发明人： Lorenzo Bolla , Paola Galli , Silvia Ghidini , Giorgio Grasso , Marco Romagnoli , Luciano Socci
IPC分类号： H04J14/02
CPC分类号： G02B6/29395 , G02B6/12007 , G02B6/29343 , G02B6/29383 , H04J14/0206 , H04J14/021
摘要： The method for filtering an optical signal comprising a plurality of channels lying on a grid of optical frequencies equally spaced by a frequency spacing and occupying an optical bandwidth, comprises: a) operating an optical filter comprising a plurality of resonators each having a respective free spectral range, wherein a first resonator of the plurality is optically coupled to the optical signal and the remaining resonators are optically coupled in series to the first resonator, so that a respective resonance of each one of the plurality of resonators falls within a first frequency band having bandwidth less than or equal to 15 GHz; b) operating the optical filter so as to obtain a separation between any resonance of at least one resonator falling within the optical bandwidth with respect to a resonance of at least another different resonator nearest to the any resonance, the separation being greater than or equal to 150 GHz and no more than 1 THz; c) tuning all the resonators of the optical filter so as to move all respective resonances of the resonators by a respective frequency interval greater than the frequency spacing while maintaining a distance between the any resonance of the at least one resonator with respect to the nearest resonance of the at least another different resonator not less than 150 GHz and no more than 1 THz; and d) operating the optical filter so that a further respective resonance of each one of the plurality of resonators falls within a second frequency band, different from the first frequency band, having bandwidth less than or equal to 15 GHz. A corresponding device for filtering an optical signal is disclosed.
摘要翻译： 用于过滤光信号的方法包括位于以频率间隔等间隔并占据光带宽的光频率网格上的多个通道的方法，包括：a）操作包括多个谐振器的滤光器，每个谐振器各自具有相应的自由光谱 范围，其中多个第一谐振器光学耦合到光信号，并且剩余的谐振器与第一谐振器串联光耦合，使得多个谐振器中的每一个谐振器的相应谐振落在具有 带宽小于或等于15GHz; b）操作所述滤光器，以便获得落入所述光学带宽内的至少一个谐振器的任何谐振与至少另一不同谐振器的谐振之间的距离，所述至少另一不同谐振器最接近所述谐振，所述分离大于或等于 150 GHz，不超过1 THz; c）调整所述滤光器的所有谐振器，以使所述谐振器的所有相应谐振移动大于所述频率间隔的相应频率间隔，同时保持所述至少一个谐振器的所述谐振之间相对于所述最近谐振的距离 的至少另一个不同的谐振器，不小于150GHz且不超过1THz; 以及d）操作所述滤光器，使得所述多个谐振器中的每一个的进一步的各自的谐振落入具有小于或等于15GHz的带宽的与所述第一频带不同的第二频带内。 公开了一种用于滤波光信号的相应装置。
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公开(公告)号：US20080253767A1
公开(公告)日：2008-10-16
申请号：US11922563
申请日：2005-06-30
IPC分类号： H04J7/00
CPC分类号： H04J14/0212 , G02B6/355 , G02B6/356 , H04J14/0206 , H04J14/021 , H04J14/0213
摘要： A method for switching from a first optical path optically coupled to an optical processing device to a second optical path, the first and second optical paths optically connecting, in parallel configuration, a first optical switch to a second optical switch, according to the following steps: directing optical radiation comprising at least a fast operating wavelength through the first optical path to the optical processing device, which is tuned to the first operating wavelength; tuning a resonant all-pass filter optically coupled to the second optical path so as to match, at least at a wavelength adjacent to the first operating wavelength, a phase distortion introduced by the optical processing device on the optical radiation; synchronously actuating the first and the second optical switch so as to switch the optical radiation from the first optical path to the second optical path.
摘要翻译： 一种从光学耦合到光学处理设备的第一光学路径切换到第二光学路径的方法，所述第一和第二光学路径根据以下步骤以并联构造将第一光学开关光学地连接到第二光学开关 ：将包括至少快速工作波长的光辐射通过第一光路引导到被调谐到第一工作波长的光学处理装置; 调谐光耦合到所述第二光路的谐振全通滤波器，以便至少在与所述第一工作波长相邻的波长处匹配由所述光学处理装置在所述光辐射上引入的相位失真; 同步致动第一和第二光开关，以便将光辐射从第一光路切换到第二光路。
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公开(公告)号：US06928221B2
公开(公告)日：2005-08-09
申请号：US10332950
申请日：2001-07-05
申请人： Giacomo Gorni , Marc Romagnoli , Luciano Socci
发明人： Giacomo Gorni , Marc Romagnoli , Luciano Socci
IPC分类号： G02B6/02 , H04B10/2525 , G02B6/20 , G02B6/22
CPC分类号： G02B6/02347 , G02B6/02261 , G02B6/0228 , H04B10/2525
摘要： A compensating optical fiber length having a negative chromatic dispersion slope, the compensating optical fiber having a core region surrounded by a cladding region, the cladding region defining a first ring of holes, which substantially defines, around the core region an annulus with an inner radius r1 and an outer radius r2, and at least one second ring of holes that surrounds the first ring of holes, the holes running along the compensating optical fiber longitudinally and being spaced apart from each other substantially according to a predefined pitch Λ, wherein a) r1≦λ/n≦r2 where n is the refractive index of the material making up the core region of the compensating optical fiber length; b) the holes of the first and the at least one second ring are substantially of the same diameter d; and c) the ratio d/Λ substantially satisfies the following relationship (A) 0.8≦d/Λ
摘要翻译： 具有负色散斜率的补偿光纤长度，所述补偿光纤具有由包层区域包围的纤芯区域，所述包层区域限定第一环孔，所述第一环孔基本上限定在所述芯区域周围的具有内半径 r 1和外半径r 2以及围绕第一环孔的至少一个第二环孔，所述孔沿着补偿光纤纵向延伸并且基本上按照预定间距Lambda彼此间隔开，其中 a）r 1 <=λ/ n <= r 2其中n是构成补偿光纤长度的核心区域的材料的折射率; b）第一和第二环的孔基本上具有相同的直径d; 和c）比率d /λ基本上满足以下关系式（A）0.8 <= d /λ1。
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公开(公告)号：US06867902B2
公开(公告)日：2005-03-15
申请号：US10135772
申请日：2002-05-01
CPC分类号： B82Y20/00 , G02B6/1225 , G02F1/3534 , G02F1/3544 , G02F1/395 , G02F2202/32
摘要： Device for performing a parametric process, comprising a substantially periodic photonic crystal structure comprising a plurality of unitary cells each comprising a first layer having a first refractive index n1 and a first length L1, a second layer having a second refractive index n2, with n1 different from n2, and a second length L2, a third layer having a third refractive index n3, with n3 different from n2, and a third length L3 and a fourth layer having a fourth refractive index n4, with n4 different from n1 and from n3, and a fourth length L4, wherein at least one among the first, the second, the third and the fourth layers has a non-linearity of the χ2 or χ3 type; at least one of the following conditions is met: a) n1 is different from n3; b) n2 is different from n4; c) L1 is different from L3; d) L2 is different from L4; and n1, n2, n3, n4, L1, L2, L3, L4 have such values as to perform the parametric process in phase matching conditions.
摘要翻译： 用于执行参数过程的装置，包括基本上周期性的光子晶体结构，其包括多个单元，每个单元包括具有第一折射率n1和第一长度L1的第一层，具有第二折射率n2的第二层，其中n1不同于 n2，第二长度L2，第三折射率n3，n3不同于n2的第三层，第三长度L3和第四折射率n4的第四层，n4与n3不同，n3不同 第四长度L4，其中第一，第二，第三和第四层中的至少一个具有chi2或chi3类型的非线性;满足以下条件中的至少一个：a）n1不同于n3; b）n2不同于n4; c）L1不同于L3; d）L2不同于L4; 和n1，n2，n3，n4，L1，L2，L3，L4具有在相位匹配条件下执行参数处理的值。
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