公开(公告)号：US20120002296A1

公开(公告)日：2012-01-05

申请号：US13230454

申请日：2011-09-12

申请人： Raffaella Costa ,  Giuseppe Cusmai ,  Andrea Melloni

发明人： Raffaella Costa ,  Giuseppe Cusmai ,  Andrea Melloni

IPC分类号： G02B27/14

CPC分类号： G02B6/29352 ,  G02B6/12011 ,  G02B6/12021

摘要： A three-arm-Mach-Zehnder interferometer for splitting/combining first and second wavelength bands is provided, wherein the optical device includes first and second optical splitting/combining elements; a differential optical delay device comprising first, second and third optical paths; the first, second and third optical paths of the differential optical delay device are configured to introduce, at a wavelength λz within the first optical band, a phase delay of 2πm.

摘要翻译： 提供了用于分割/组合第一和第二波长带的三臂马赫 - 曾德干涉仪，其中光学装置包括第一和第二光学分离/组合元件; 差分光学延迟器件，包括第一，第二和第三光路; 差分光学延迟器件的第一，第二和第三光路被配置为在第一光学带内的波长λz处引入2μm的相位延迟。

公开(公告)号：US08433196B2

公开(公告)日：2013-04-30

申请号：US13230454

申请日：2011-09-12

申请人： Raffaella Costa ,  Giuseppe Cusmai ,  Andrea Melloni

发明人： Raffaella Costa ,  Giuseppe Cusmai ,  Andrea Melloni

IPC分类号： H04J14/02

CPC分类号： G02B6/29352 ,  G02B6/12011 ,  G02B6/12021

摘要： A three-arm-Mach-Zehnder interferometer for splitting/combining first and second wavelength bands is provided, wherein the optical device includes first and second optical splitting/combining elements; a differential optical delay device comprising first, second and third optical paths; the first, second and third optical paths of the differential optical delay device are configured to introduce, at a wavelength λz within the first optical band, a phase delay of 2πm.

摘要翻译： 提供了用于分割/组合第一和第二波长带的三臂马赫 - 曾德干涉仪，其中光学装置包括第一和第二光学分离/组合元件; 差分光学延迟器件，包括第一，第二和第三光路; 差分光学延迟器件的第一，第二和第三光路被配置为在第一光学波段内的波长兰普达兹引入2pim的相位延迟。

公开(公告)号：US08023822B2

公开(公告)日：2011-09-20

申请号：US11883943

申请日：2005-02-10

申请人： Raffaella Costa ,  Giuseppe Cusmai ,  Andrea Melloni

发明人： Raffaella Costa ,  Giuseppe Cusmai ,  Andrea Melloni

IPC分类号： H04J14/00

CPC分类号： G02B6/29352 ,  G02B6/12011 ,  G02B6/12021

摘要： A three-arm-Mach-Zehnder interferometer for splitting/combining a first and a second wavelength band, wherein the optical device includes: a first and second optical splitting/combining element; a differential optical delay device comprising a first, a second and a third optical path; each of the first and second optical splitting/combining elements, is of the (25-50-25%)λx(0-0-100%)λy type, wherein λx is a wavelength with the first optical band and λy is a wavelength with the second optical band, and the first, second and third optical paths of the differential optical delay device are configured to introduce, at a wavelength λz within the first optical band, a phase delay Δφ of 2πm.

摘要翻译： 一种用于分割/组合第一和第二波长带的三臂马赫 - 曾德干涉仪，其中所述光学装置包括：第一和第二光学分离/组合元件; 差分光学延迟装置，包括第一，第二和第三光路; 第一和第二光分路/组合元件中的每一个具有（25-50-25％）λx（0-0-100％）λy类型，其中λx是具有第一光带的波长，λy是波长 所述差分光学延迟装置的第一，第二和第三光路被配置为在所述第一光学带内的波长λz处引入相位延迟＆Dgr; 的2＆pgr; m。

公开(公告)号：US20090041462A1

公开(公告)日：2009-02-12

申请号：US11883943

申请日：2005-02-10

申请人： Raffaella Costa ,  Giuseppe Cusmai ,  Andrea Melloni

发明人： Raffaella Costa ,  Giuseppe Cusmai ,  Andrea Melloni

IPC分类号： G02B6/28 ,  H04B10/00 ,  H04J14/02

CPC分类号： G02B6/29352 ,  G02B6/12011 ,  G02B6/12021

摘要： A three-arm-Mach-Zehnder interferometer for splitting/combining a first and a second wavelength band, wherein the optical device includes: a first and second optical splitting/combining element; a differential optical delay device comprising a first, a second and a third optical path; each of the first and second optical splitting/combining elements, is of the (25-50-25%)λx(0-0-100%)λy type, wherein λx is a wavelength with the first optical band and λy is a wavelength with the second optical band, and the first, second and third optical paths of the differential optical delay device are configured to introduce, at a wavelength λz within the first optical band, a phase delay Δφ of 2πm.

摘要翻译： 一种用于分割/组合第一和第二波长带的三臂马赫 - 曾德干涉仪，其中所述光学装置包括：第一和第二光学分离/组合元件; 差分光学延迟装置，包括第一，第二和第三光路; 第一和第二光分裂/组合元件中的每一个具有（25-50-25％）羊羔（0-0-100％）羊羔类型，其中羔羊是具有第一光学带的波长，而蓝天是波长 所述差分光学延迟装置的第一，第二和第三光路被配置为在所述第一光学波段内的波长兰德兹引入2pim的相位延迟Deltaphi。

公开(公告)号：US20080044126A1

公开(公告)日：2008-02-21

申请号：US10566948

申请日：2003-08-04

申请人： Raffaella Costa ,  Giuseppe Cusmai ,  Andrea Melloni

发明人： Raffaella Costa ,  Giuseppe Cusmai ,  Andrea Melloni

IPC分类号： G02B6/12

CPC分类号： G02B6/1228 ,  G02B6/305 ,  G02B2006/12097

摘要： An integrated optical waveguide structure having a waveguide core for guiding an optical field, formed on a lower cladding layer. The waveguide core has a waveguide core layer substantially coextensive to the lower cladding layer and having a substantially uniform thickness, and a waveguide core rib of a substantially uniform height protruding from a surface of the waveguide core layer opposite to a surface thereof facing the lower cladding layer. A layout of the waveguide core rib defines a path for the guided optical field. The integrated optical waveguide structure has a circuit waveguide portion in which the waveguide core layer has a first width, adapted for guiding the optical field through an optical circuit, and at least one coupling waveguide portion adapted for coupling the circuit waveguide portion to an external optical field. The coupling portion has a terminal waveguide core rib portion having a second width lower than the first width and terminating in a facet, and a transition waveguide core rib portion optically joining to each other the circuit waveguide portion and the terminal waveguide portion, the transition waveguide core rib portion being laterally tapered so that a width thereof decreases from the first width to the second width. The waveguide structure allows an integrated optical device designer satisfying optical circuits needs and, at the same time, ensuring a satisfactory coupling efficiency with an external field.

摘要翻译： 一种集成光波导结构，其具有用于引导光场的波导芯，形成在下包层上。 波导芯具有与下包层基本共同延伸并且具有基本均匀的厚度的波导芯层，和从波导芯层的面向下包层的表面相反的表面突出的基本上均匀的高度的波导芯肋 层。 波导芯肋的布局限定了用于引导光场的路径。 集成光波导结构具有电路波导部分，其中波导芯层具有第一宽度，适于通过光电路引导光场;以及至少一个耦合波导部分，其适于将电路波导部分耦合到外部光 领域。 耦合部分具有端子波导芯肋部分，其具有低于第一宽度的第二宽度并且终止于小面;以及过渡波导芯肋部分，其彼此光学地接合电路波导部分和端子波导部分，过渡波导 芯肋部分是横向渐缩的，使得其宽度从第一宽度减小到第二宽度。 波导结构允许集成的光学器件设计者满足光电路的需要，并且同时确保与外部场的令人满意的耦合效率。

公开(公告)号：US07302135B2

公开(公告)日：2007-11-27

申请号：US10479579

申请日：2002-05-28

申请人： Andrea Melloni ,  Raffaella Costa ,  Federico Carniel

发明人： Andrea Melloni ,  Raffaella Costa ,  Federico Carniel

IPC分类号： G02B6/02

CPC分类号： G02B6/125 ,  G02B2006/12038 ,  G02B2006/12147 ,  G02B2006/1215

摘要： Waveguide bends are specially designed according to a matching condition in order to suppress mode distortion and other undesirable effects. The bend is structured having regard to its length and curvature to ensure that at its end the first and second bend modes are substantially in phase with each other having completed approximately an integer number of beats. By being in phase at the end of the bend, the two modes are able to properly reconstruct the first mode of the straight waveguide and propagate on with a minimum of distortion, whether it be into a straight section, a further curved section of arbitrary curvature, into a free space propagation region and the like. This approach suppresses mode distortion, transition losses and other negative effects of waveguide bends. Device applications include couplers, Y-branches and Mach-Zehnder interferometers, all of which include waveguide bends.

摘要翻译： 波导弯曲根据匹配条件进行专门设计，以抑制模式失真和其他不良影响。 考虑到其长度和曲率来构造弯曲部，以确保在其端部处，第一和第二弯曲模式基本上彼此相位已经完成大约整数个节拍。 通过在弯曲结束时处于同相，两种模式能够适当地重建直波导的第一模式并且以最小的失真传播，无论其是直线部分，还是任意曲率的弯曲部分 ，进入自由空间传播区域等。 该方法抑制波导弯曲的模式失真，转变损耗和其他负面影响。 器件应用包括耦合器，Y分支和Mach-Zehnder干涉仪，所有这些都包括波导弯曲。

公开(公告)号：US07006744B2

公开(公告)日：2006-02-28

申请号：US10415128

申请日：2001-10-26

申请人： Federico Carniel ,  Raffaella Costa ,  Andrea Melloni

发明人： Federico Carniel ,  Raffaella Costa ,  Andrea Melloni

IPC分类号： G02B6/10

CPC分类号： G02B6/29355 ,  G02B6/12007 ,  G02B6/122 ,  G02B6/1228 ,  G02B6/125 ,  G02B6/29343 ,  G02B2006/12097 ,  G02B2006/121 ,  G02B2006/12159 ,  G02B2006/12169

摘要： A hybrid waveguide structure having a combination of buried waveguide sections and ridge waveguide sections on the same substrate, share a common core layer. The buried waveguide sections provide the low index contrast desirable for couplers and other device components. The ridge waveguide sections provide the high index contrast needed for efficient low-loss tightly curved waveguides. The devices are fabricated starting from a low index contrast buried waveguide. Cladding material is then selectively removed by etching down from an upper surface either side of the waveguide core to a lower surface. This forms an enhanced index contrast ridge section of the waveguide. The other sections of the waveguide core remain buried and thus retain lower index contrast. Using this approach, a variety of optical devices, such as add/drop or add-after-drop multiplexers for WDM applications based on microrings or Mach-Zehnder interferometers, can be made with large feature sizes of several microns using silica-on-glass or silica-on-silicon technology, for example, and without having to use nanofabricated semiconductor structures.

摘要翻译： 具有在相同基板上的掩埋波导部分和脊波导部分的组合的混合波导结构共享共同的核心层。 掩埋波导段提供耦合器和其它器件部件所需的低折射率对比度。 脊形波导部分提供了有效的低损耗紧密弯曲波导所需的高折射率对比度。 器件是从低折射率对比埋入波导开始制造的。 然后通过从波导芯的任一侧的上表面向下蚀刻来选择性地去除包覆材料。 这形成了波导的增强折射率对比脊部分。 波导芯的其他部分保持埋入，因此保持较低的折射率对比度。 使用这种方法，可以使用基于微环或马赫 - 策德尔干涉仪的WDM应用的各种光学器件（例如用于WDM应用的分插复用器或分插后置复用器），使用二氧化硅玻璃制成具有几微米的大特征尺寸 或硅二氧化硅技术，并且不必使用纳米制造的半导体结构。