公开(公告)号：US20110116741A1

公开(公告)日：2011-05-19

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％。

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％。

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。

公开(公告)号：US20100196014A1

公开(公告)日：2010-08-05

申请号：US12513818

申请日：2006-11-09

申请人： Lorenzo Bolla ,  Paola Galli ,  Silvia Ghidini ,  Marco Romagnoli ,  Luciano Socci

发明人： Lorenzo Bolla ,  Paola Galli ,  Silvia Ghidini ,  Marco Romagnoli ,  Luciano Socci

IPC分类号： H04B10/12 ,  G02B6/26

CPC分类号： G02B6/29395 ,  G02B6/12007 ,  G02B6/29343 ,  G02B6/29383 ,  H04J14/0206 ,  H04J14/021 ,  H04J14/0212

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, 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 said respective resonance of at least one resonator with respect to said respective resonance of at least another different resonator, the separation being greater than or equal to 25 GHz; c) operating the optical filter so that said 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, wherein during the procedure from step a) to step c), at least one among said respective resonance of the at least one resonator and said respective resonance of the at least another different resonator is moved also outside a frequency region spanning between, and including, the first and the second frequency band. 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等距间隔频率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，其中第一谐振器 所述多个光学耦合到所述光信号，并且所述剩余谐振器与所述第一谐振器串联耦合，使得所述多个谐振器中的每一个谐振器的相应谐振落入具有小于或等于15的带宽的第一频带内 GHz; b）操作所述滤光器以便获得至少一个谐振器的所述相应谐振之间相对于至少另一个不同谐振器的所述相应谐振的间隔，所述分离大于或等于25GHz; c）操作所述滤光器，使得所述多个谐振器中的每一个的所述相应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，其中在步骤a ）到步骤c），所述至少一个谐振器的所述相应谐振器中的至少一个和所述至少另一个不同谐振器的所述相应谐振器也移动到跨越并包括第一和第二频带的频率区域之外 。 公开了一种用于滤波光信号的相应装置。

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

IPC分类号： G02B6/42 ,  H04J14/02

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。

公开(公告)号：US08494317B2

公开(公告)日：2013-07-23

申请号：US12513818

申请日：2006-11-09

申请人： Lorenzo Bolla ,  Paola Galli ,  Silvia Ghidini ,  Marco Romagnoli ,  Luciano Socci

发明人： Lorenzo Bolla ,  Paola Galli ,  Silvia Ghidini ,  Marco Romagnoli ,  Luciano Socci

IPC分类号： G02B6/42 ,  H04J14/02

CPC分类号： G02B6/29395 ,  G02B6/12007 ,  G02B6/29343 ,  G02B6/29383 ,  H04J14/0206 ,  H04J14/021 ,  H04J14/0212

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, 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 said respective resonance of at least one resonator with respect to said respective resonance of at least another different resonator, the separation being greater than or equal to 25 GHz; c) operating the optical filter so that said 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, wherein during the procedure from step a) to step c), at least one among said respective resonance of the at least one resonator and said respective resonance of the at least another different resonator is moved also outside a frequency region spanning between, and including, the first and the second frequency band. 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等距间隔频率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，其中第一谐振器 所述多个光学耦合到所述光信号，并且所述剩余谐振器与所述第一谐振器串联耦合，使得所述多个谐振器中的每一个谐振器的相应谐振落入具有小于或等于15的带宽的第一频带内 GHz; b）操作所述滤光器以便获得至少一个谐振器的所述相应谐振之间相对于至少另一个不同谐振器的所述相应谐振的间隔，所述分离大于或等于25GHz; c）操作所述滤光器，使得所述多个谐振器中的每一个的所述相应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，其中在步骤a ）到步骤c），所述至少一个谐振器的所述相应谐振器中的至少一个和所述至少另一个不同谐振器的所述相应谐振器也移动到跨越并包括第一和第二频带的频率区域之外 。 公开了一种用于滤波光信号的相应装置。

公开(公告)号：US08483528B2

公开(公告)日：2013-07-09

申请号：US12919591

申请日：2008-02-29

申请人： Luciano Socci ,  Lorenzo Bolla ,  Paola Galli ,  Marco Romagnoli ,  Silvia Ghidini

发明人： Luciano Socci ,  Lorenzo Bolla ,  Paola Galli ,  Marco Romagnoli ,  Silvia Ghidini

IPC分类号： G02B6/26 ,  G02B6/42 ,  G02B6/10

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. A second waveguide comprises a second core and a second cladding, and is arranged with respect to the first waveguide so as to realize an evanescent optical coupling with the first waveguide. The second core comprises a tapered region, in at least a portion of which the evanescent coupling takes place.The first core and the second core are separated by a gap. A first refractive index contrast of the first waveguide is less than a second refractive index contrast of the second waveguide.

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。 第二波导包括第二芯和第二包层，并且相对于第一波导布置，以便实现与第一波导的渐逝光耦合。 第二芯包括锥形区域，其至少部分消逝耦合发生。 第一个核心和第二个核心被间隙隔开。 第一波导的第一折射率对比度小于第二波导的第二折射率对比度。

公开(公告)号：US20110026880A1

公开(公告)日：2011-02-03

申请号：US12919591

申请日：2008-02-29

申请人： Paola Galli ,  Marco Romagnoli ,  Luciano Socci ,  Lorenzo Bolla ,  Silvia Ghidini

发明人： Paola Galli ,  Marco Romagnoli ,  Luciano Socci ,  Lorenzo Bolla ,  Silvia Ghidini

IPC分类号： G02B6/26

CPC分类号： G02B6/305 ,  G02B6/1228

摘要： A semiconductor-based optical mode transformer (100, 100′, 100″) is described for coupling an optical mode of an optical fiber (3) with an optical mode of a waveguide (2a). The optical mode transformer comprises a first waveguide (1a) extending along a first main longitudinal direction (Z) and including an end facet (9) being apt to be coupled to the optical fiber (3), said first waveguide (1a) including a first core (1) and a first cladding (6,4) and having a first refractive index contrast (Δn1); and a second waveguide (2a) arranged with respect to said first waveguide so as to realize an evanescent optical coupling with said first waveguide (1a), the second waveguide (2a) comprising a second core (2) and a second cladding (4,7) and having a second refractive index contrast (Δn2). In addition, the second core (2) comprises a tapered region (13,13′), in at least a portion of which said evanescent coupling takes place. The first core (1) of the first waveguide (1a) and the second core (2) of the second waveguide (2a) are separated by a gap (g). The thickness (T2) of said second waveguide (2a) is comprised between 120 nm and 180 nm and the second refractive index contrast Δn2 is greater than 40%, or the thickness (T2) of said second waveguide (2a) is comprised 100 nm and 400 nm and the second refractive index contrast Δn2 is comprised between 18% and 30%. The first refractive index contrast is smaller than the second refractive index contrast.

摘要翻译： 描述了一种用于将光纤（3）的光学模式与波导（2a）的光学模式耦合的基于半导体的光学模式变压器（100,100'，100“）。 光模式变压器包括沿着第一主纵向方向（Z）延伸并且包括适于耦合到光纤（3）的端面（9）的第一波导（1a），所述第一波导（1a）包括 第一芯（1）和第一包层（6,4）并具有第一折射率对比度（＆Dgr; n1）; 以及相对于所述第一波导布置的第二波导（2a），以实现与所述第一波导（1a）的渐逝光耦合，所述第二波导（2a）包括第二芯（2）和第二包层（4， 7）并且具有第二折射率对比度（＆Dgr; n2）。 另外，第二芯体（2）包括锥形区域（13,13'），其中至少一部分消逝耦合发生。 第一波导（1a）的第一芯（1）和第二波导（2a）的第二芯（2）由间隙（g）分开。 所述第二波导（2a）的厚度（T2）在120nm和180nm之间，第二折射率对比度Dgr; n2大于40％，或者包括所述第二波导（2a）的厚度（T2） 100nm和400nm，第二折射率对比度＆Dgr; n2在18％和30％之间。 第一折射率对比度小于第二折射率对比度。

公开(公告)号：US20100189441A1

公开(公告)日：2010-07-29

申请号：US12514008

申请日：2006-11-09

申请人： Lorenzo Bolla ,  Paola Galli ,  Silvia Ghidini ,  Marco Romagnoli ,  Luciano Socci

发明人： Lorenzo Bolla ,  Paola Galli ,  Silvia Ghidini ,  Marco Romagnoli ,  Luciano Socci

IPC分类号： H04J14/02

CPC分类号： G02B6/29343 ,  G02B6/12007 ,  G02B6/29353 ,  G02B6/29355 ,  G02B6/29383 ,  G02B6/29395 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0208 ,  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 given frequency spacing and occupying an optical bandwidth, comprises: a) splitting the optical signal into a first and a second portion spatially separated, wherein the first portion comprises the channels which lie on a first sub-grid comprising a first set of the optical frequencies equally spaced by the double of the frequency spacing and the second portion substantially comprises the remaining channels; b) operating a first optical filter comprising a plurality of resonators, wherein a first resonator of the plurality is optically coupled to the first portion 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 and comprising a first channel belonging to the first portion; c) operating a second optical filter comprising a plurality of respective resonators, wherein a respective first resonator of the plurality is optically coupled to the second portion and the remaining resonators are coupled in series to the first resonator, so as to obtain a first separation between each resonance of at least one resonator of the second optical filter falling within the optical bandwidth and a respective resonance of at least another different resonator of the second optical filter nearest to said each resonance, the first separation being greater than or equal to 25 GHz; and d) recombining the first and second filtered portions. A corresponding optical 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等距间隔给定频率间隔并占据光学带宽的光频率网格上的多个信道的方法包括：a）将光信号分为空间分离的第一和第二部分， 其中所述第一部分包括位于第一子网格上的通道，所述通道包括以两倍频率间隔等间隔的第一组光学频率，并且所述第二部分基本上包括剩余通道; b）操作包括多个谐振器的第一光学滤波器，其中多个第一谐振器光耦合到第一部分，并且剩余的谐振器与第一谐振器串联光学耦合，使得每个谐振器的相应谐振 所述多个谐振器落入具有小于或等于15GHz的带宽的第一频带内，并且包括属于所述第一部分的第一信道; c）操作包括多个相应谐振器的第二光学滤波器，其中所述多个相应的第一谐振器被光耦合到所述第二部分，并且所述剩余谐振器与所述第一谐振器串联耦合，以便获得第一谐振器之间的第一间隔 第二滤光器的至少一个谐振器的谐振落入光学带宽内，并且至少另一不同谐振器的第二滤光器的相应谐振器最接近所述每个谐振，第一分离值大于或等于25GHz; 和d）重组第一和第二过滤部分。 公开了一种用于滤波光信号的相应光学装置。