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    Method for producing a fiber laser
    1.
    发明授权
    Method for producing a fiber laser 失效
    光纤激光器的制造方法

    公开(公告)号：US06690685B1

    公开(公告)日：2004-02-10

    申请号：US10089782

    申请日：2002-06-18

    申请人： Guido Oliveti ,  Giacomo Rossi ,  Maurizio Tormen

    发明人： Guido Oliveti ,  Giacomo Rossi ,  Maurizio Tormen

    IPC分类号： H01S330

    CPC分类号： G02B6/02123 ,  G02B6/02057 ,  H01S3/0675

    摘要： To produce a fiber laser (106) a double-cladding active fiber (114) doped with Yb is predisposed to receive, near a first end (114a), a UV radiation suitable to write a first Bragg grating; during the writing process, a scanned pumping radiation is fed to the first end of the active fiber in order to excite an amplified stimulated emission between the first grating and the reflecting surface of a second end (114b) of the active fiber, previously cut and cleaned, and to consequently induce a laser emission from the active fiber; the optical power of the laser emission is measured and processed to obtain the laser efficiency; when a maximum value of the efficiency is reached, the writing process is stopped; similar steps are used to write a second grating near the second end (114b) of the active fiber.

    摘要翻译： 为了制造光纤激光器（106），掺杂有Yb的双包层有源光纤（114）倾向于在第一端（114a）附近接收适于写入第一布拉格光栅的UV辐射; 在写入过程期间，将扫描的泵浦辐射馈送到有源光纤的第一端，以激发第一光栅与预先切割的有源光纤的第二端（114b）的反射表面之间的放大的受激发射， 清洁并因此诱导来自活性纤维的激光发射; 对激光发射的光功率进行测量和处理以获得激光效率; 当达到效率的最大值时，写入处理停止; 类似的步骤用于在有源光纤的第二端（114b）附近写入第二光栅。

    Tunable laser
    2.
    发明授权
    Tunable laser 有权
    可调谐激光

    公开(公告)号：US07826501B2

    公开(公告)日：2010-11-02

    申请号：US12176879

    申请日：2008-07-21

    申请人： Ross Stanley ,  Maurizio Tormen ,  Rino Kunz ,  Philippe Niedermann

    发明人： Ross Stanley ,  Maurizio Tormen ,  Rino Kunz ,  Philippe Niedermann

    IPC分类号： H01S3/10

    CPC分类号： G01J3/1804 ,  G02B5/1828 ,  G02B26/0808 ,  H01S5/141

    摘要： A mode hop-free tunable laser including a gain medium, a microfabricated blazed grating, defining an external cavity of a given length, the blazed grating lying in a general plane and including a plurality of elongate beams carrying mutually parallel respective reflection surfaces spaced apart from one another with a predefined pitch, and actuating elements designed so as to allow displacements of the assembly with respect to a grating support within a plane substantially parallel to the grating general plane, and including actuation elements designed so as to apply a stretching and a displacement of the assembly in a direction transverse to said reflection surfaces, the blazed grating being arranged relative to an incident light beam provided by the gain medium so that the incident light beam impinges on the reflection surfaces with a substantially normal incident angle.

    摘要翻译： 包括增益介质的模式跳跃可调谐激光器，限定给定长度的外部空腔的微型闪光光栅，所述闪耀的光栅位于总体平面中，并且包括多个细长光束，所述多个细长光束承载相互平行的各自的反射表面， 彼此具有预定的间距，以及致动元件，其被设计成允许组件相对于基本上平行于光栅总体平面的平面内的光栅支撑件移位，并且包括设计成施加拉伸和位移的致动元件 在相对于所述反射表面横向的方向上，所述闪耀的光栅相对于由增益介质提供的入射光束布置，使得入射光束以基本上正常的入射角度照射在反射表面上。

    Device for crossing optical beams, in particular in an integrated optical circuit
    3.
    发明授权
    Device for crossing optical beams, in particular in an integrated optical circuit 有权
    用于交叉光束的装置，特别是在集成光学电路中

    公开(公告)号：US07346239B2

    公开(公告)日：2008-03-18

    申请号：US10506769

    申请日：2002-03-06

    申请人： Marco Romagnoli ,  Maurizio Tormen ,  Camilla Bonati

    发明人： Marco Romagnoli ,  Maurizio Tormen ,  Camilla Bonati

    IPC分类号： G02B6/26 ,  G02F1/00

    CPC分类号： B82Y20/00 ,  G02B6/1225 ,  G02B6/125

    摘要： A device for crossing optical beams. At least a first input optical waveguide is directed along a first axis, a second optical waveguide is directed along a second axis inclined with respect to the first axis, and a photonic crystal having a regular periodicity in an optical crossing region at the intersection of said first and second axis has, opposite the first and second input waveguides, a first and a second output waveguide to provide for exit beams.

    摘要翻译： 用于交叉光束的装置。 至少第一输入光波导沿着第一轴指向，第二光波导沿着相对于第一轴倾斜的第二轴指向，并且在所述第一轴的交叉处的光交叉区域中具有规则周期的光子晶体 第一和第二轴线具有与第一和第二输入波导相对的第一和第二输出波导以提供出射光束。

    Integrated wavelength selective grating-based filter
    4.
    发明申请
    Integrated wavelength selective grating-based filter 审中-公开
    集成波长选择性光栅滤波器

    公开(公告)号：US20070189669A1

    公开(公告)日：2007-08-16

    申请号：US11631780

    申请日：2004-07-22

    申请人： Maurizio Tormen ,  Marco Romagnoli

    发明人： Maurizio Tormen ,  Marco Romagnoli

    IPC分类号： G02B6/34

    CPC分类号： G02B6/124

    摘要： A wavelength selective grating-based filter includes a planar waveguide which includes a core surrounded by a cladding, the cladding including a lower cladding, the core being placed above the lower cladding, a lateral cladding adjacent to a first and a second opposite lateral sides of the core, and an upper cladding, said upper cladding being positioned above said core and lateral cladding. The waveguide also includes a grating structure, including a first and a second plurality of grating trenches formed in the lateral cladding in proximity of the first and second opposite lateral sides of the core, respectively. The first and second plurality of grating trenches are covered by the upper cladding.

    摘要翻译： 基于波长选择性光栅的滤波器包括平面波导，其包括由包层围绕的芯，所述包层包括下包层，所述芯放置在下包层的上方，与所述第一和第二相对的侧面相邻的横向包层 所述芯部和上部包层，所述上部包层位于所述芯部和所述横向包层之上。 波导还包括光栅结构，其包括分别形成在芯部的第一和第二相对侧面附近的横向包层中的第一和第二多个光栅沟槽。 第一和第二多个光栅沟槽被上部包层覆盖。

    Device for bending an optical beam, in particular in an optical integrated circuit
    5.
    发明授权
    Device for bending an optical beam, in particular in an optical integrated circuit 有权
    用于弯曲光束的装置，特别是在光学集成电路中

    公开(公告)号：US07133588B2

    公开(公告)日：2006-11-07

    申请号：US10506542

    申请日：2002-03-06

    申请人： Marco Romagnoli ,  Maurizio Tormen ,  Camilla Bonati

    发明人： Marco Romagnoli ,  Maurizio Tormen ,  Camilla Bonati

    IPC分类号： G02B6/26 ,  G02B6/12

    CPC分类号： B82Y20/00 ,  G02B6/1225 ,  G02B6/125 ,  G02B2006/12104

    摘要： A device for varying the direction of an optical beam. A first waveguide is directed along a first direction, a second waveguide is directed along a second direction different from the first direction, and a bending region is interposed between the first and the second waveguide. The bending region has a photonic crystal having a regular periodicity and at least a first and a second crystal axes substantially aligned with the first and second directions, and a reflecting surface delimiting the photonic crystal and so positioned and oriented as to reflect an optical beam coming from the first waveguide toward the second waveguide.

    摘要翻译： 用于改变光束方向的装置。 沿着第一方向引导第一波导，沿着与第一方向不同的第二方向引导第二波导，并且在第一和第二波导之间插入有弯曲区域。 弯曲区域具有规则周期的光子晶体和至少基本上与第一和第二方向对齐的第一和第二晶轴，以及限定光子晶体的反射表面，并且定位和定向成反射来自光束的光束 从第一波导到第二波导。

    Integrated Optical Device
    7.
    发明申请
    Integrated Optical Device 审中-公开
    集成光器件

    公开(公告)号：US20060098917A1

    公开(公告)日：2006-05-11

    申请号：US10529143

    申请日：2002-09-27

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

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

    IPC分类号： G02B6/26

    CPC分类号： G02B6/124 ,  G02B6/12007 ,  G02B6/29317 ,  G02B6/29353 ,  G02B2006/12107 ,  G02B2006/12159

    摘要： An integrated optical device having a first and a second integrated waveguide arranged so as to be in optical coupling relationship in a first and a second spaced-apart coupling region and having respective optically uncoupled waveguide sections in between the first and second coupling regions. A first and a second modulated refractive index structures are provided, each one formed along a respective uncoupled waveguide section; the modulated refractive index structures each having at least one pair of regions of mutually different refractive index adjacent to each other along the respective uncoupled waveguide section. The regions of mutually different refractive index have a portion of the respective uncoupled waveguide section and a gap formed in the uncoupled waveguide section, the refractive indexes of the regions differing from each other by at least approximately 1.5%. The device can be exploited to form optical multiplexers/demultiplexers, particularly adapted to the use in 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，其布置成在第一和第二间隔耦合区域中处于光耦合关系，并且在第一和第二耦合区域之间具有相应的光学非耦合波导部分。 提供第一和第二调制折射率结构，每个结构都沿相应的非耦合波导部分形成; 所述调制的折射率结构各自具有彼此相邻的相互不同的折射率的至少一对区域，沿着相应的未耦合的波导部分。 相互不同的折射率的区域具有相应的非耦合波导部分的一部分和形成在非耦合波导部分中的间隙，所述区域的折射率彼此相差至少约1.5％。 可以利用该器件来形成光复用器/解复用器，特别适用于波分复用光通信中的使用。

    FABRICATION PROCESS OF A MICROFABRICATED BLAZED GRATING
    8.
    发明申请
    FABRICATION PROCESS OF A MICROFABRICATED BLAZED GRATING 有权
    微晶玻璃烧结的制备工艺

    公开(公告)号：US20100220395A1

    公开(公告)日：2010-09-02

    申请号：US12161640

    申请日：2007-01-22

    申请人： Ross Stanley ,  Maurizio Tormen ,  Rino Kunz ,  Philippe Niedermann

    发明人： Ross Stanley ,  Maurizio Tormen ,  Rino Kunz ,  Philippe Niedermann

    IPC分类号： G02B5/18 ,  G03F7/20

    CPC分类号： G01J3/1804 ,  G02B5/1828 ,  G02B26/0808 ,  H01S5/141

    摘要： A blazed grating is disclosed as well as mode hop-free tunable lasers and a process for fabricating gratings of this type. The grating lies in a general plane and includes a plurality of elongate beams carrying mutually parallel respective reflection surfaces spaced apart from one another with a predefined pitch, each of these reflection surfaces having a normal direction inclined at a grating angle α to the normal direction of the general plane. The grating includes a plurality of resilient suspension arms connected to the beams and intended to be fastened to a grating support. A first pair of comb electrodes is provided for applying a mechanical force to this assembly, being placed on a first side of the grating, along an axis transverse to the beams, and designed so as to allow the pitch of the grating to be modified in response to the application of the mechanical force.

    摘要翻译： 公开了一种闪耀的光栅以及无跳变可调激光器以及用于制造这种类型的光栅的工艺。 光栅位于通用平面中，并且包括多个细长梁，其承载相互平行的各自的反射表面，以预定的间距彼此间隔开，每个反射面具有沿与法线方向 一般飞机。 光栅包括连接到光束并且被固定到光栅支架上的多个弹性悬挂臂。 第一对梳状电极被设置用于沿着横向于梁的轴线向该组件施加机械力，该机械力被放置在光栅的第一侧上，并被设计成允许光栅的间距在 响应机械力的应用。

    Method for guiding an electromagnetic radiation, in particular in an integrated optical device
    9.
    发明申请
    Method for guiding an electromagnetic radiation, in particular in an integrated optical device 有权
    用于引导电磁辐射的方法，特别是在集成的光学装置中

    公开(公告)号：US20050175304A1

    公开(公告)日：2005-08-11

    申请号：US10506658

    申请日：2002-03-06

    申请人： Marco Romagnoli ,  Maurizio Tormen ,  Camilla Bonati

    发明人： Marco Romagnoli ,  Maurizio Tormen ,  Camilla Bonati

    IPC分类号： G02B6/12 ,  G02B1/02 ,  G02B6/122 ,  G02B6/125 ,  G02B6/10

    CPC分类号： B82Y20/00 ,  G02B6/1225 ,  G02B6/125

    摘要： A method for guiding electromagnetic radiation by providing a photonic crystal made of a bulk material with a predetermined refractive index and having a periodic array of holes with predetermined radius, and feeding to that region an electromagnetic radiation having a wavelength in the fundamental photonic band and so related to the refractive index of the bulk material, to the radius of the holes and to the period of the array that, starting from an isotropic distribution of the wave vectors within a first angular range that is twice the angular extension of the first irreducible Brillouin zone of the photonic crystal, the corresponding group velocity vectors are rearranged as concerns direction and module so that at least 50% of them become directed within a second angular range that is about one-third of the first angular range and the width at half-maximum of the distribution of the modules of the vectors is lower than about two-thirds of the second angular range.

    摘要翻译： 一种通过提供由具有预定折射率的本体材料制成的具有预定半径的孔的周期阵列的光子晶体来引导电磁辐射的方法，并向该区域馈送具有基本光子带中的波长的电磁辐射 与体积材料的折射率相关，到孔的半径和阵列的周期，其从波矢的各向同性分布开始，第一角度范围是第一不可约布里渊的角度延伸的两倍 光子晶体的区域，相应的组速度矢量被重新排列为关于方向和模块，使得它们中的至少50％变为在第一角度范围的约三分之一的第二角度范围内， 向量的模块的分布的最大值低于第二角度范围的约三分之二。