利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

848 条记录 (耗时 0.024 秒)

    Heterogeneous waveguide integrated optical isolator and circulator
    2.
    发明授权
    Heterogeneous waveguide integrated optical isolator and circulator 有权
    异构波导集成光隔离器和循环器

    公开(公告)号：US08965155B1

    公开(公告)日：2015-02-24

    申请号：US14160856

    申请日：2014-01-22

    申请人： Aurrion, Inc.

    发明人： Gregory Alan Fish

    IPC分类号： G02B6/00 ,  G02B6/34 ,  G02F1/01 ,  H04B10/17 ,  H04J14/02

    CPC分类号： G02B6/34 ,  B82Y20/00 ,  G02B6/1228 ,  G02B6/124 ,  G02B6/305 ,  G02F1/0955 ,  G02F2201/302

    摘要： Embodiments of the invention utilize optical structures created by processes in the wafer fabrication foundry to form optical isolators and circulators. Grating coupling structures are utilized to couple light having a chosen polarization component into free space through non-reciprocal rotation material; said light is captured by another set of grating coupling structures after experiencing a 45 degree rotation of the polarization. By non-reciprocally rotating the polarization, the input and output ports of the optical isolator will be different depending on the direction of the light propagation.The amount of non-reciprocal rotation material utilized by embodiments of the invention may be small, and the grating coupling structures may be efficiently made to couple to each other as their field profiles may be matched and their position may be precisely defined by lithographic means.

    摘要翻译： 本发明的实施例利用由晶片制造代工厂中的工艺产生的光学结构来形成光学隔离器和循环器。 光栅耦合结构用于将具有选定的偏振分量的光通过不可逆旋转材料耦合到自由空间中; 所述光在经历45度旋转偏振之后被另一组光栅耦合结构俘获。 通过不相互旋转极化，光隔离器的输入和输出端口将根据光传播的方向而不同。 由本发明的实施例使用的不可逆旋转材料的量可以很小，并且可以有效地使光栅耦合结构彼此耦合，因为它们的场分布可以匹配，并且它们的位置可以由光刻装置精确地限定。

    Spatial filtering of higher order modes in multimode fibers
    4.
    发明授权
    Spatial filtering of higher order modes in multimode fibers 有权
    多模光纤中高阶模式的空间滤波

    公开(公告)号：US08909017B2

    公开(公告)日：2014-12-09

    申请号：US13483524

    申请日：2012-05-30

    申请人： Jayesh C. Jasapara

    发明人： Jayesh C. Jasapara

    IPC分类号： G02B6/028 ,  H04B10/17 ,  H04B10/2581

    CPC分类号： G02B6/0288 ,  H04B10/2581

    摘要： A mode filter for eliminating the propagation of higher-order modes along a section of optical multimode fiber comprises a graded index (GRIN) lens, preferably of a quarter-pitch length, and a pinhole element in the form of a small core fiber. This configuration creates a Fourier spatial filter assembly that removes higher order modes propagating along an optical fiber while capturing the fundamental mode of the optical signal. A section of GRIN fiber is preferably used as the lens, with the small core fiber disposed at the output of the GRIN fiber lens to collect substantially only the on-axis fundamental mode of the optical signal. Since the higher order modes are shifted away from the origin by the GRIN fiber lens, only the fundamental mode signal is captured by the small core fiber.

    摘要翻译： 用于消除沿着多模光纤部分的高阶模的传播的模式滤波器包括优选四分之一节距的分级折射率（GRIN）透镜和小芯纤维形式的针孔元件。 该配置创建傅立叶空间滤波器组件，其去除沿着光纤传播的高阶模，同时捕获光信号的基本模式。 优选使用GRIN光纤的一部分作为透镜，其中小芯纤维布置在GRIN光纤透镜的输出处，以仅基本上仅收集光信号的轴上基本模式。 由于高阶模式通过GRIN光纤透镜远离原点，所以只有基本模式信号被小芯光纤捕获。

    Large mode area optical fiber
    5.
    发明授权
    Large mode area optical fiber 有权
    大模光区域光纤

    公开(公告)号：US08797642B2

    公开(公告)日：2014-08-05

    申请号：US12669664

    申请日：2008-07-16

    申请人： Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Anping Liu

    发明人： Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Anping Liu

    IPC分类号： G02B6/036 ,  H04B10/17

    CPC分类号： G02B6/14 ,  G02B6/024 ,  G02B6/03644 ,  G02B6/03661 ,  G02B6/03688 ,  H01S3/06708 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/08045 ,  H01S3/094007

    摘要： A large-mode-area (LMA) optical fiber (10) that operates as a single-mode optical fiber. The optical fiber includes a core region (20) surrounded by an inner cladding (32), which in turn is surrounded by an outer cladding (40). The inner cladding includes at least one up-doped ring region (32R1). The ring region is configured to form a large attenuation differential between the higher-order modes and the fundamental mode so only that the fundamental mode remains traveling in the optical fiber. If necessary, the optical fiber can include a bend (10B) having a select “resonant” bend diameter (DB) that increases the relative attenuation of the fundamental and higher-order modes. The optical fiber supports an effective mode field diameter (MFD) of up to 40 μm to 50 μm. As a result, detrimental non-linear effects are suppressed, which allows the optical fiber to carry substantially more optical power than conventional LMA optical fibers. The LMA optical fiber is thus eminently suited for a number of optical-fiber-based applications calling for high optical power, such as fiber lasers and pump sources for wavelength conversion.

    摘要翻译： 作为单模光纤工作的大模（LMA）光纤（10）。 光纤包括由内包层（32）包围的芯区域（20），该内部区域又由外包层（40）围绕。 内包层包括至少一个上掺杂环区（32R1）。 环形区域被配置为在高阶模式和基模之间形成大的衰减差分，从而仅使基本模式保持在光纤中行进。 如果需要，光纤可以包括具有选择的“共振”弯曲直径（DB）的弯曲（10B），该弯曲直径（DB）增加了基极和高阶模的相对衰减。 光纤支持高达40μm至50μm的有效模场直径（MFD）。 结果，抑制了有害的非线性效应，这使得光纤比传统的LMA光纤承载更多的光功率。 因此，LMA光纤非常适合于需要高光功率的多个基于光纤的应用，例如用于波长转换的光纤激光器和泵浦光源。

    Ultrafast laser generating system and method thereof
    6.
    发明授权
    Ultrafast laser generating system and method thereof 有权
    超快激光发生系统及其方法

    公开(公告)号：US08774239B2

    公开(公告)日：2014-07-08

    申请号：US13372841

    申请日：2012-02-14

    申请人： Yao Wun Jhang ,  Hsin Chia Su ,  Chien Ming Huang ,  Chieh Hu ,  Hong Xi Tsau ,  Shih Ting Lin

    发明人： Yao Wun Jhang ,  Hsin Chia Su ,  Chien Ming Huang ,  Chieh Hu ,  Hong Xi Tsau ,  Shih Ting Lin

    IPC分类号： H01S3/10 ,  H04B10/17

    CPC分类号： H01S3/06754 ,  H01S3/005 ,  H01S3/0057 ,  H01S3/0064 ,  H01S3/094003 ,  H01S3/1618

    摘要： An ultrafast laser generating system comprises a laser signal generator, a laser signal amplifier and a beam splitting element. The laser signal generator is configured to generate a first nanosecond pulse laser. The laser amplifier is configured to amplify the first nanosecond pulse laser from the laser signal generator so as to generate a second nanosecond pulse laser, which includes a picosecond pulse laser. The beam splitting element is configured to receive the second nanosecond pulse laser and split the picosecond pulse laser from the second nanosecond pulse laser.

    摘要翻译： 超快激光发生系统包括激光信号发生器，激光信号放大器和分束元件。 激光信号发生器被配置为产生第一纳秒脉冲激光器。 激光放大器被配置为放大来自激光信号发生器的第一纳秒脉冲激光器，以便产生包括皮秒脉冲激光器的第二纳秒脉冲激光器。 分束元件被配置为接收第二纳秒脉冲激光器并从第二纳秒脉冲激光器分离皮秒脉冲激光器。

    Photonic bandgap fiber and fiber amplifier
    9.
    发明授权
    Photonic bandgap fiber and fiber amplifier 有权
    光子带隙光纤和光纤放大器

    公开(公告)号：US08564877B2

    公开(公告)日：2013-10-22

    申请号：US12430346

    申请日：2009-04-27

    申请人： Ryuichiro Goto

    发明人： Ryuichiro Goto

    IPC分类号： H04B10/17 ,  G02B6/036

    CPC分类号： G02B6/02357 ,  G02B6/02347 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/06741 ,  H01S3/0675 ,  H01S3/094007 ,  H01S2301/02

    摘要： A photonic bandgap fiber includes a core of a solid material; a first cladding provided around the core; a low-refractive-index region provided in a part of a core vicinity portion of the first cladding and whose average refractive index is lower than that of the core; and a periodic structure region that is arranged in another part of the core vicinity portion of the first cladding which is made of a great many high-refractive-index portions whose refractive index is higher than that of the first cladding arranged in a periodic structure. According to the invention, it is possible to provide a photonic bandgap fiber which, when arranged in a double-clad structure, enables pump light to efficiently pump signal light.

    摘要翻译： 光子带隙光纤包括固体材料的核心; 围绕芯部设置的第一包层; 低折射率区域，设置在第一包层的芯部附近部分的一部分，平均折射率低于芯的折射率; 以及周期性结构区域，其布置在第一包层的芯部附近部分的另一部分中，该多个高折射率部分的折射率高于以周期性结构排列的第一包层的折射率部分。 根据本发明，可以提供一种光子带隙光纤，当布置在双包层结构中时，能够使泵浦光有效地泵浦信号光。