公开(公告)号：US20070071061A1

公开(公告)日：2007-03-29

申请号：US10584507

申请日：2003-12-24

申请人： Giulia Pietra ,  Giacomo Gorni

发明人： Giulia Pietra ,  Giacomo Gorni

IPC分类号： H01S3/10 ,  H01S3/08

CPC分类号： G02B6/12007 ,  G02B6/124 ,  G02F1/216 ,  G02F2201/302 ,  G02F2203/055 ,  G02F2203/15 ,  H01S3/08059 ,  H01S3/105 ,  H01S3/1055 ,  H01S5/12 ,  H01S5/141 ,  H01S5/142

摘要： A tunable resonant grating filter that can reflect optical radiation at a resonant wavelength, the resonant wavelength being selectively variable. The filter includes a diffraction grating, a planar waveguide, and a light transmissive material having a selectively variable refractive index to permit tuning of the filter, the light transmissive material forming a tunable cladding layer for the waveguide, preferably a liquid crystal material. The diffraction grating is placed on the opposite side of the tunable layer with respect to the planar waveguide, thereby making it possible to tailor the grating structural parameters to the desired bandwidth of the filter response without significantly affecting the tunability of the filter. Within the resonant structure, the core layer, i.e., the waveguide, can be placed close to the tunable layer either in direct contact with the tunable layer or with an interposed relatively thin intermediate layer(s) between the core and the tunable layer.

摘要翻译： 可谐振光栅滤波器，可以反射谐振波长的光辐射，谐振波长是有选择性的。 滤光器包括衍射光栅，平面波导和具有选择性可变折射率以允许调谐滤光器的透光材料，所述透光材料形成用于波导的可调谐包覆层，优选为液晶材料。 衍射光栅相对于平面波导放置在可调谐层的相反侧，从而使得可以将光栅结构参数定制到滤波器响应的期望带宽，而不会显着影响滤波器的可调性。 在谐振结构内，芯层即波导可以靠近可调谐层放置，或者与可调谐层直接接触，或者在芯和可调谐层之间插入相对较薄的中间层。

公开(公告)号：US20050069247A1

公开(公告)日：2005-03-31

申请号：US10493570

申请日：2001-10-26

申请人： Giacomo Gorni ,  Maurizio Tormen ,  Marco Romagnoli ,  Matteo Cherchi

发明人： Giacomo Gorni ,  Maurizio Tormen ,  Marco Romagnoli ,  Matteo Cherchi

IPC分类号： G02B5/26 ,  G02B5/28 ,  G02B6/12 ,  G02B6/122 ,  G02B6/124 ,  G02B6/34 ,  G02B6/28

CPC分类号： B82Y20/00 ,  G02B6/02085 ,  G02B6/12007 ,  G02B6/1225 ,  G02B6/124 ,  G02B6/29319

摘要： Optical multi/demultiplexer (4) device comprising a substrate, a plurality of wave guides (45, 46, 47, 48) on a surface of said substrate, a plurality of selective wavelength filters (452, 462, 472, 482). Each of said plurality of filter is able to transmit a first predetermined band of wavelengths (PB′) and to reflect a second predetermined band (SB′). Each one of said plurality of filter comprising a plurality of transverse cuts (4521, 4522, 4523) provided on said waveguide disposed in predetermined positions. Said cuts forms a plurality of transmissive couple providing said first predetermined band and a plurality of reflective couple providing said second predetermined band. Said transmissive couples and said reflective couples are disposed in series. A wavelength selective filter is separately disclosed, an a method of making a filter.

摘要翻译： 光学多路/多路分解器（4）装置，包括基板，在所述基板的表面上的多个波导（45,46,47,48），多个选择波长滤波器（452,462,472,482）。 所述多个滤波器中的每一个能够发送第一预定波段（PB'）并反射第二预定频带（SB'）。 所述多个滤光器中的每一个包括设置在设置在预定位置的所述波导上的多个横向切口（4521,4522,4523）。 所述切口形成提供所述第一预定带的多个透射耦合和提供所述第二预定带的多个反射耦合。 所述透射耦合和所述反射耦合被串联布置。 单独公开了波长选择滤波器，制造滤波器的方法。

公开(公告)号：US06816659B2

公开(公告)日：2004-11-09

申请号：US10180461

申请日：2002-06-27

申请人： Giacomo Gorni ,  Luciano Socci ,  Marco Romagnoli

发明人： Giacomo Gorni ,  Luciano Socci ,  Marco Romagnoli

IPC分类号： G02B620

CPC分类号： G02B6/0239 ,  C03B2203/36 ,  C03B2203/42 ,  G02B6/02261 ,  G02B6/02361 ,  G02F1/0115 ,  G02F1/0147 ,  H04B10/2525

摘要： Unit (100) comprising a portion of holey optical fibre (12) having a length Lc comprising a core region (13) and a cladding region (14), said cladding region (14) comprising, in turn, a plurality of holes passing through it longitudinally, said holes having a respective diameter and being spaced, two by two, according to a respective pitch, said unit comprising also a temperature adjusting device (16) for bringing and maintaining the holey optical fibre (12) at temperature values T selectable in a predetermined interval of temperatures Tx-Ty.

摘要翻译： 单元（100）包括具有包括芯区域（13）和包层区域（14）的长度Lc的多孔光纤（12）的一部分，所述包层区域（14）又包括通过的多个孔 纵向地，所述孔具有相应的直径，并且根据相应的间距间隔开两个，所述单元还包括温度调节装置（16），用于将多孔光纤（12）带入并保持在温度值T可选择 在预定的温度Tx-Ty的温度范围内。

公开(公告)号：US08064741B2

公开(公告)日：2011-11-22

申请号：US10584853

申请日：2003-12-29

申请人： Matteo Cherchi ,  Giacomo Gorni

发明人： Matteo Cherchi ,  Giacomo Gorni

IPC分类号： G02B6/26

CPC分类号： G02B6/14 ,  G02B6/305 ,  G02B2006/12038 ,  G02B2006/12061

摘要： An optical mode converter has a coupling waveguide and a receiving waveguide. The coupling waveguide has at an input end a first effective refractive index and includes a tapered core of a substantially constant refractive index with a substantially square cross section at the input end, which has a size that tapers down moving away from the input end. The coupling waveguide also has a cladding at least partially surrounding the tapered core. The receiving waveguide has a second effective refractive index at an output end and includes a core of a substantially constant refractive index greater than the refractive index of the tapered core of the coupling waveguide and a cladding at least partially surrounding the core. A side surface of the tapered core of the coupling waveguide is optically in contact, in a coupling portion, with the receiving waveguide so as to allow optical coupling between the coupling waveguide and the receiving waveguide. The refractive index of the tapered core of the coupling waveguide is selected so that the first effective refractive index and the second effective refractive index differ from each other in absolute value less than 30% of the difference between the core refractive index and the effective refractive index of the receiving waveguide.

摘要翻译： 光模式转换器具有耦合波导和接收波导。 耦合波导在输入端处具有第一有效折射率，并且包括基本上恒定的折射率的锥形芯，该输入端在输入端具有基本上正方形的横截面，其具有从输入端向下移动的尺寸。 耦合波导还具有至少部分围绕锥形芯的包层。 接收波导在输出端具有第二有效折射率，并且包括大于连接波导的锥形芯的折射率的基本恒定的折射率的芯和至少部分地围绕芯的包层。 耦合波导的锥形芯的侧表面在耦合部分中与接收波导光学地接触，以允许耦合波导和接收波导之间的光耦合。 选择耦合波导的锥形芯的折射率，使得第一有效折射率和第二有效折射率彼此之间的绝对值小于芯折射率与有效折射率之差的30％ 的接收波导。

公开(公告)号：US20090245728A1

公开(公告)日：2009-10-01

申请号：US10584853

申请日：2003-12-29

申请人： Matteo Cherchi ,  Giacomo Gorni

发明人： Matteo Cherchi ,  Giacomo Gorni

IPC分类号： G02B6/26

CPC分类号： G02B6/14 ,  G02B6/305 ,  G02B2006/12038 ,  G02B2006/12061

摘要： An optical mode converter has a coupling waveguide and a receiving waveguide. The coupling waveguide has at an input end a first effective refractive index and includes a tapered core of a substantially constant refractive index with a substantially square cross section at the input end, which has a size that tapers down moving away from the input end. The coupling waveguide also has a cladding at least partially surrounding the tapered core. The receiving waveguide has a second effective refractive index at an output end and includes a core of a substantially constant refractive index greater than the refractive index of the tapered core of the coupling waveguide and a cladding at least partially surrounding the core. A side surface of the tapered core of the coupling waveguide is optically in contact, in a coupling portion, with the receiving waveguide so as to allow optical coupling between the coupling waveguide and the receiving waveguide. The refractive index of the tapered core of the coupling waveguide is selected so that the first effective refractive index and the second effective refractive index differ from each other in absolute value less than 30% of the difference between the core refractive index and the effective refractive index of the receiving waveguide.

摘要翻译： 光模式转换器具有耦合波导和接收波导。 耦合波导在输入端处具有第一有效折射率，并且包括基本上恒定的折射率的锥形芯，该输入端在输入端具有基本上正方形的横截面，其具有从输入端向下移动的尺寸。 耦合波导还具有至少部分围绕锥形芯的包层。 接收波导在输出端具有第二有效折射率，并且包括大于连接波导的锥形芯的折射率的基本恒定的折射率的芯和至少部分地围绕芯的包层。 耦合波导的锥形芯的侧表面在耦合部分中与接收波导光学地接触，以允许耦合波导和接收波导之间的光耦合。 选择耦合波导的锥形芯的折射率，使得第一有效折射率和第二有效折射率彼此之间的绝对值小于芯折射率与有效折射率之差的30％ 的接收波导。

公开(公告)号：US20060140541A1

公开(公告)日：2006-06-29

申请号：US10529223

申请日：2002-09-27

申请人： Giacomo Gorni ,  Marco Romagnoli ,  Riccardo Tediosi ,  Daniele Faccio

发明人： Giacomo Gorni ,  Marco Romagnoli ,  Riccardo Tediosi ,  Daniele Faccio

IPC分类号： G02B6/26

CPC分类号： G02B6/29383 ,  G02B6/12007 ,  G02B6/124 ,  G02B6/29334

摘要： An integrated optical device having a first and a second integrated waveguide; a section of the first waveguide and a section of the second waveguide arranged so as to be in optical coupling relationship. A first and a second modulated refractive index structures are respectively formed along the first waveguide section and the second waveguide section. Each modulated refractive index structure has at least one pair of regions of mutually different refractive index, adjacent to each other along the respective waveguide section. The regions of mutually different refractive index have a portion of the respective waveguide section and a gap formed in the waveguide section. The refractive indexes of the regions differ from each other by least approximately 1.5%. The device can be used for optical multiplexers/demultiplexers, particularly for wavelength division multiplexing optical communications.

摘要翻译： 一种具有第一和第二集成波导的集成光学器件; 所述第一波导的一部分和所述第二波导的一部分被布置为具有光耦合关系。 第一和第二调制折射率结构分别沿着第一波导部分和第二波导部分形成。 每个调制的折射率结构具有至少一对相互不同的折射率的区域，沿着相应波导部分彼此相邻。 相互不同的折射率的区域具有各个波导部分的一部分和形成在波导部分中的间隙。 该区域的折射率彼此相差至少约为1.5％。 该装置可以用于光复用器/解复用器，特别是用于波分复用光通信。

公开(公告)号：US20070058900A1

公开(公告)日：2007-03-15

申请号：US10578252

申请日：2003-11-05

申请人： Daniele Faccio ,  Giacomo Gorni

发明人： Daniele Faccio ,  Giacomo Gorni

IPC分类号： G02B6/26

CPC分类号： G02F1/3132 ,  G02B2006/12107 ,  G02F1/0147 ,  G02F2201/307

摘要： A tuneable grating assisted directional optical coupler to couple a transmission signal has a first waveguide including a first core and a first cladding, the first waveguide having a first effective refractive index. The coupler also has a second waveguide including a second core and a second cladding, the second waveguide having a second effective refractive index different from the first effective index and being in substantially close proximity to the first waveguide in a predetermined region to provide coupling therebetween. A periodic perturbation is positioned in the coupling region to cause the coupling to be wavelength selective for one given wavelength function of the first and/or the second effective refractive index. Additionally, the second cladding of the second waveguide has a tuneable material and the first cladding of the first waveguide has a non-tuneable material.

公开(公告)号：US07116469B2

公开(公告)日：2006-10-03

申请号：US10499020

申请日：2001-12-21

申请人： Attilio Bragheri ,  Glulia Pietra ,  Giacomo Gorni ,  Marco Romagnoli

发明人： Attilio Bragheri ,  Glulia Pietra ,  Giacomo Gorni ,  Marco Romagnoli

IPC分类号： H01S3/30

CPC分类号： H01S3/302 ,  H01S3/06729 ,  H01S3/06741 ,  H01S3/094003 ,  H01S3/094073

摘要： A Raman amplifier having a microstructured fiber and at least one pump laser, optically connected to one end of the microstructured fiber. The pump laser is adapted for emitting a pump radiation at a wavelength λp, and the microstructured fiber has a silica-based core surrounded by a plurality of capillary voids extending in the axial direction of the fiber. The core of microstructured fiber has at least one dopant added to silica, the dopant being suitable for enhancing Raman effect.

摘要翻译： 具有微结构纤维和至少一个泵浦激光器的拉曼放大器，光学连接到微结构纤维的一端。 泵浦激光器适于发射波长λλ的泵浦辐射，并且微结构纤维具有由在纤维的轴向方向上延伸的多个毛细孔隙围绕的二氧化硅基核。 微结构纤维的核心具有添加到二氧化硅中的至少一种掺杂剂，该掺杂剂适用于增强拉曼效应。

公开(公告)号：US20050225841A1

公开(公告)日：2005-10-13

申请号：US10499020

申请日：2001-12-21

申请人： Attilio Bragheri ,  Glulia Pietra ,  Giacomo Gorni ,  Marco Romagnoli

发明人： Attilio Bragheri ,  Glulia Pietra ,  Giacomo Gorni ,  Marco Romagnoli

IPC分类号： G02F1/35 ,  H01S3/067 ,  H01S3/094 ,  H01S3/30 ,  H01S3/00

CPC分类号： H01S3/302 ,  H01S3/06729 ,  H01S3/06741 ,  H01S3/094003 ,  H01S3/094073

摘要： A Raman amplifier having a microstructured fiber and at least one pump laser, optically connected to one end of the microstructured fiber. The pump laser is adapted for emitting a pump radiation at a wavelength λp, and the microstructured fiber has a silica-based core surrounded by a plurality of capillary voids extending in the axial direction of the fiber. The core of microstructured fiber has at least one dopant added to silica, the dopant being suitable for enhancing Raman effect.

摘要翻译： 具有微结构纤维和至少一个泵浦激光器的拉曼放大器，光学连接到微结构纤维的一端。 泵浦激光器适于发射波长λλ的泵浦辐射，并且微结构纤维具有由在纤维的轴向方向上延伸的多个毛细孔隙围绕的二氧化硅基核。 微结构纤维的核心具有添加到二氧化硅中的至少一种掺杂剂，该掺杂剂适用于增强拉曼效应。

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。