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    Multi-clad optical fibers with corrugated boundary at pump cladding
    31.
    发明授权
    Multi-clad optical fibers with corrugated boundary at pump cladding 有权
    泵浦包层波纹边界的多包层光纤

    公开(公告)号：US08736955B2

    公开(公告)日：2014-05-27

    申请号：US13493199

    申请日：2012-06-11

    Applicant: Liang Dong ,  Hugh McKay

    Inventor： Liang Dong ,  Hugh McKay

    IPC: H04B10/17 ,  G02B6/036

    CPC classification number: H01S3/06754 ,  C03C25/104 ,  G02B6/02361 ,  G02B6/02366 ,  G02B6/024 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/06741 ,  H01S3/094007

    Abstract: Multi-clad optical fibers and fiber amplifiers are disclosed. Various embodiments include multi-clad, large core fiber amplifiers. In various implementations mixing of pump modes is enhanced relative to that obtainable with conventional double-clad fibers. In some embodiments end terminations are provided with increased length of end-cap fiber. In at least one embodiment a multi-clad fiber is provided, with a pump cladding formed by stacking a layer of low index rods in the preform. Various embodiments include a multi-clad fiber amplifier system. The system includes a pump source to pump said fiber amplifier. The system also includes an optical fiber having a core and a cladding, wherein the cladding includes a pump cladding having a corrugated boundary. In various embodiments the pump cladding is formed by rods in a preform, which are disposed to mix the pump modes and/or scatter or reflect pump energy into the core.

    Abstract translation: 公开了多包层光纤和光纤放大器。 各种实施例包括多包层大芯光纤放大器。 在各种实施方案中，相对于使用常规双包层光纤可获得的泵模式的混合增强。 在一些实施方案中，末端终端具有增加的端帽纤维长度。 在至少一个实施例中，提供了多包层光纤，其中通过在预成型件中堆叠一层低折射率棒而形成泵浦覆层。 各种实施例包括多包层光纤放大器系统。 该系统包括用于泵浦所述光纤放大器的泵浦源。 该系统还包括具有芯和包层的光纤，其中包层包括具有波纹边界的泵浦覆层。 在各种实施例中，泵包层由预制件中的杆形成，其被设置成混合泵模式和/或将泵浦能量分散或反射到芯中。

    Environmentally stable passively modelocked fiber laser pulse source
    34.
    发明授权
    Environmentally stable passively modelocked fiber laser pulse source 失效
    环保型被动锁模光纤激光脉冲源

    公开(公告)号：US08548014B2

    公开(公告)日：2013-10-01

    申请号：US13398198

    申请日：2012-02-16

    Applicant: Martin E. Fermann ,  Donald J. Harter

    Inventor： Martin E. Fermann ,  Donald J. Harter

    IPC: H01S3/30

    CPC classification number: H01S3/067 ,  H01S3/08059 ,  H01S3/1112 ,  H01S3/1115 ,  Y10T29/49826

    Abstract: The present invention is directed to providing an environmentally stable, ultra-short pulse source. Exemplary embodiments relate to passively modelocked ultra-short fiber lasers which are insensitive to temperature variations and which possess only negligible sensitivity to pressure variations. Further, exemplary embodiments can be implemented in a cost-effective manner which render them commercially practical in unlimited applications. Arbitrary fiber lengths (e.g., on the order of 1 millimeter to 1 kilometer, or greater) can be used to provide an ultra-short pulse with a cost-effective architecture which is commercially practical.

    Abstract translation: 本发明旨在提供一种环境稳定的超短脉冲源。 示例性实施例涉及对温度变化不敏感并且对压力变化仅具有可忽略的敏感性的被动锁模超短纤维激光器。 此外，示例性实施例可以以成本有效的方式实现，这使得它们在无限制的应用中具有商业上的实用性。 可以使用任意光纤长度（例如，大约1毫米至1千米或更大）可提供具有商业上实用的具有成本效益的架构的超短脉冲。

    OPTICAL PARAMETRIC AMPLIFICATION, OPTICAL PARAMETRIC GENERATION, AND OPTICAL PUMPING IN OPTICAL FIBERS SYSTEMS
    39.
    发明申请
    OPTICAL PARAMETRIC AMPLIFICATION, OPTICAL PARAMETRIC GENERATION, AND OPTICAL PUMPING IN OPTICAL FIBERS SYSTEMS 有权
    光学参数放大，光学参数生成和光纤泵浦系统中的光学泵浦

    公开(公告)号：US20130182724A1

    公开(公告)日：2013-07-18

    申请号：US13714840

    申请日：2012-12-14

    Applicant: IMRA AMERICA, INC.

    Inventor： Gennady Imeshev ,  Martin E. Fermann

    IPC: H01S3/10 ,  H01S3/08

    CPC classification number: H01S3/10015 ,  G02F1/3558 ,  G02F1/39 ,  G02F2001/392 ,  G02F2203/26 ,  H01S3/005 ,  H01S3/0057 ,  H01S3/06708 ,  H01S3/06725 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/08013 ,  H01S3/0941 ,  H01S3/10092 ,  H01S3/109 ,  H01S3/1608 ,  H01S3/1616 ,  H01S3/302

    Abstract: Embodiments described herein include a system for producing ultrashort tunable pulses based on ultra broadband OPA or OPG in nonlinear materials. The system parameters such as the nonlinear material, pump wavelengths, quasi-phase matching periods, and temperatures can be selected to utilize the intrinsic dispersion relations for such material to produce bandwidth limited or nearly bandwidth limited pulse compression. Compact high average power sources of short optical pulses tunable in the wavelength range of 1800 to 2100 nm and after frequency doubling in the wavelength range of 900 to 1050 nm can be used as a pump for the ultra broadband OPA or OPG. In certain embodiments, these short pump pulses are obtained from an Er fiber oscillator at about 1550 nm, amplified in Er fiber, Raman-shifted to 1800 to 2100 nm, stretched in a fiber stretcher, and amplified in Tm-doped fiber.

    Abstract translation: 本文描述的实施例包括用于在非线性材料中基于超宽带OPA或OPG产生超短可调脉冲的系统。 可以选择诸如非线性材料，泵浦波长，准相位匹配周期和温度之类的系统参数以利用这种材料的固有色散关系来产生带宽限制或几乎带宽限制的脉冲压缩。 可在1800至2100 nm的波长范围内调谐的短光脉冲的紧凑型高平均电源，在900至1050 nm的波长范围内倍频后可用作超宽带OPA或OPG的泵。 在某些实施例中，这些短泵浦脉冲从大约1550nm的Er光纤振荡器获得，在Er光纤中被放大，拉曼偏移到1800-2100nm，在纤维拉伸器中拉伸，并且在掺杂Tm的光纤中进行放大。

    Ultra small core fiber with dispersion tailoring
    40.
    发明授权
    Ultra small core fiber with dispersion tailoring 有权
    超小芯纤维与分散裁剪

    公开(公告)号：US08467648B2

    公开(公告)日：2013-06-18

    申请号：US13448003

    申请日：2012-04-16

    Applicant: Liang Dong ,  Brian Thomas ,  Libin Fu

    Inventor： Liang Dong ,  Brian Thomas ,  Libin Fu

    IPC: G02B6/02 ,  G02B6/036

    CPC classification number: G02F1/365 ,  C03B37/0122 ,  C03B2201/82 ,  C03B2201/86 ,  C03B2203/10 ,  C03B2203/14 ,  C03B2203/42 ,  C03B2205/08 ,  C03B2205/10 ,  G02B6/02214 ,  G02B6/02333 ,  G02B6/02357 ,  G02F1/395 ,  H01S3/0057 ,  H01S3/06729 ,  H01S3/06754

    Abstract: Various embodiments of optical fiber designs and fabrication processes for ultra small core fibers (USCF) are disclosed. In some embodiments, the USCF includes a core that is at least partially surrounded by a region comprising first features. The USCF further includes a second region at least partially surrounding the first region. The second region includes second features. In an embodiment, the first features are smaller than the second features, and the second features have a filling fraction greater than about 90 percent. The first features and/or the second features may include air holes. Embodiments of the USCF may provide dispersion tailoring. Embodiments of the USCF may be used with nonlinear optical devices configured to provide, for example, a frequency comb or a supercontinuum.

    Abstract translation: 公开了用于超小芯纤维（USCF）的光纤设计和制造工艺的各种实施例。 在一些实施例中，USCF包括至少部分地被包括第一特征的区域包围的芯。 USCF还包括至少部分围绕第一区域的第二区域。 第二个区域包括第二个特征。 在一个实施例中，第一特征小于第二特征，并且第二特征具有大于约90％的填充分数。 第一特征和/或第二特征可以包括气孔。 USCF的实施例可以提供色散调整。 USCF的实施例可以与被配置为提供例如频率梳或超连续谱的非线性光学装置一起使用。

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