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    GLASS LARGE-CORE OPTICAL FIBERS
    1.
    发明申请
    GLASS LARGE-CORE OPTICAL FIBERS 审中-公开
    玻璃大芯光纤光纤

    公开(公告)号：WO2009042347A1

    公开(公告)日：2009-04-02

    申请号：PCT/US2008/074668

    申请日：2008-08-28

    Applicant: IMRA AMERICA, INC. ,  DONG, Liang ,  LI, Jun ,  MCKAY, Hugh ,  FU, Libin ,  MARCINKEVICIUS, Andrius

    Inventor： DONG, Liang ,  LI, Jun ,  MCKAY, Hugh ,  FU, Libin ,  MARCINKEVICIUS, Andrius

    IPC: G02B6/02

    CPC classification number: G02B6/0288 ,  G02B6/02009 ,  G02B6/02333 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/02366 ,  G02B6/02371 ,  G02B6/0283 ,  G02B6/14 ,  H01S3/06729 ,  H01S3/06754 ,  H01S3/091 ,  H01S3/11

    Abstract: Embodiments of optical fiber may include cladding features that include a material (e.g., fluorine-doped silica glass) that may produce a very low relative refractive index difference with respect to cladding material in which the cladding features are disposed. This relative refractive index difference may be characterized by (ni-n2)/ni, where ni is the index of refraction of the cladding material in which the cladding features are included, and n2 is the index of refraction of the cladding features. In certain embodiments, the relative refractive index difference may be less than about 4.5 x 10"3. In various embodiments, the configuration of the cladding features including, for example, the size and spacing of the cladding features, can be selected to provide for confinement of the fundamental mode yet leakage for the second mode and higher modes, which may provide mode filtering, single mode propagation, and/or low bend loss.

    Abstract translation: 光纤的实施例可以包括包括材料（例如氟掺杂石英玻璃）的包层特征，其可以产生相对于其中设置包层特征的包层材料的非常低的相对折射率差。 该相对折射率差可以由（ni-n2）/ ni表征，其中，ni是其中包括包层特征的包层材料的折射率，n2是包层特征的折射率。 在某些实施例中，相对折射率差可以小于约4.5×10 -3。在各种实施例中，可以选择包括例如包层特征的尺寸和间隔的包层特征的构造，以提供 基本模式的限制，但是对于第二模式和更高模式的泄漏，其可以提供模式滤波，单模传播和/或低弯曲损耗。

    PHOTONIC BANDGAP FIBERS
    2.
    发明申请
    PHOTONIC BANDGAP FIBERS 审中-公开
    光电胶带纤维

    公开(公告)号：WO2006072025A2

    公开(公告)日：2006-07-06

    申请号：PCT/US2005/047520

    申请日：2005-12-30

    Applicant: IMRA AMERICA, INC. ,  DONG, Liang ,  PENG, Xiang

    Inventor： DONG, Liang ,  PENG, Xiang

    IPC: G02B6/02

    CPC classification number: G01N21/65 ,  C03B37/01205 ,  C03B37/01208 ,  C03B37/0122 ,  C03B2203/04 ,  C03B2203/12 ,  C03B2203/14 ,  C03B2203/16 ,  C03B2203/42 ,  G01N21/774 ,  G01N2021/655 ,  G02B6/02238 ,  G02B6/023 ,  G02B6/02304 ,  G02B6/02328 ,  G02B6/02338 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/4206

    Abstract: Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs, smaller dimensions of high index material in the cladding and large core size provide small flat dispersion over a wide spectral range. In other examples, the thickness of the high index ring-shaped region closest to the core has sufficiently large dimensions to provide negative dispersion or zero dispersion at a desired wavelength. Additionally, low index cladding features distributed along concentric rings or circles may be used for achieving wide bandgaps.

    Abstract translation: 包括在本文所描述的许多结构之中的是设计成提供所需色散谱的光子带隙光纤。 此外，还讨论了用于实现宽传输频带和较低传输损耗的设计。 例如，在一些光纤设计中，包层中高折射率材料的较小尺寸和较大的芯体尺寸在较宽的光谱范围内提供较小的平坦色散。 在其他示例中，最靠近芯的高折射率环形区域的厚度具有足够大的尺寸以在期望的波长处提供负色散或零色散。 另外，沿着同心环或圆分布的低折射率包层特征可以用于实现宽带隙。

    WIDE BANDWIDTH, LOW LOSS PHOTONIC BANDGAP FIBERS
    3.
    发明申请
    WIDE BANDWIDTH, LOW LOSS PHOTONIC BANDGAP FIBERS 审中-公开
    宽带宽，低损失光电胶带纤维

    公开(公告)号：WO2010114847A1

    公开(公告)日：2010-10-07

    申请号：PCT/US2010/029250

    申请日：2010-03-30

    Applicant: IMRA AMERICA, INC. ,  DONG, Liang ,  THOMAS, Brian, K. ,  SUZUKI, Shigeru ,  FU, Libin

    Inventor： DONG, Liang ,  THOMAS, Brian, K. ,  SUZUKI, Shigeru ,  FU, Libin

    IPC: G02B6/032

    CPC classification number: B29D11/00663 ,  G02B6/02328 ,  G02B6/02347 ,  G02B6/024

    Abstract: Various embodiments described herein comprise hollow core (HC) photonic bandgap fibers (PBGF) with a square lattice (SQL) (300). In various embodiments the, HC SQL PBGF (300) includes a cladding region (302) comprising 2-10 layers of air-holes (305). In various embodiments, the HC SQL PBGF can be configured to provide a relative wavelength transmission window Δλ/λc larger than about 0.35 and minimum transmission loss in a range from about 70 dB/km to about 0.1 dB/km. In some embodiments, the HC SQL PBGF fiber can be a polarization maintaining fiber. Methods of fabricating such fibers are also disclosed herein along with some examples of fabricated fibers. Various applications of such fibers are also described herein.

    Abstract translation: 本文描述的各种实施例包括具有正方形网格（SQL）（300）的空心芯（HC）光子带隙光纤（PBGF）。 在各种实施例中，HC SQL PBGF（300）包括包含2-10层空气孔（305）的包层区域（302）。 在各种实施例中，HC SQL PBGF可以被配置为提供大于约0.35的相对波长传输窗口Δε/Δc，并且在约70dB / km至约0.1dB / km的范围内提供最小传输损耗。 在一些实施例中，HC SQL PBGF光纤可以是偏振保持光纤。 本文还公开了制造这种纤维的方法以及制造的纤维的一些实例。 这里也描述了这种纤维的各种应用。

    LARGE CORE HOLEY FIBERS
    6.
    发明申请
    LARGE CORE HOLEY FIBERS 审中-公开
    大芯孔纤维

    公开(公告)号：WO2005070170A2

    公开(公告)日：2005-08-04

    申请号：PCT/US2005/000911

    申请日：2005-01-13

    Applicant: IMRA AMERICA, INC.

    Inventor： DONG, Liang ,  HARTER, Donald, J. ,  WONG, William

    IPC: G02B6/02 ,  G02B6/14

    CPC classification number: G02B6/032 ,  G02B6/02009 ,  G02B6/02047 ,  G02B6/02328 ,  G02B6/02338 ,  G02B6/02342 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/02366 ,  G02B6/024 ,  G02B6/14 ,  G02B6/32 ,  H01S3/06716 ,  H01S3/06729 ,  H01S3/06733 ,  H01S3/06741 ,  H01S3/06754

    Abstract: Various types of holey fiber provide optical propagation. In various embodiments, for example, a large core holey fiber comprises a cladding region formed by large holes arranged in few layers. The number of layers or rows of holes about the large core can be used to coarse tune the leakage losses of the fundamental and higher modes of a signal, thereby allowing the non-fundamental modes to be substantially eliminated by leakage over a given length of fiber. Fine tuning of leakage losses can be performed by adjusting the hole dimension and/or the hole spacing to yield a desired operation with a desired leakage loss of the fundamental mode. Resulting holely fibers have a large hole dimension and spacing, and thus a large core, when compared to traditional fibers and conventional fibers that propagate a single mode. Other loss mechanisms, such as bend loss and modal spacing can be utilized for selected modes of operation of holey fibers. Other embodiments are also provided.

    Abstract translation: 各种有孔光纤提供光学传播。 在各种实施例中，例如，大的核心多孔纤维包括由几层布置的大孔形成的包层区域。 可以使用围绕大芯的多个层或多排的孔来粗调基本信号和较高模式的信号的泄漏损耗，从而通过在给定长度的光纤上的泄漏来基本上消除非基本模式 。 泄漏损失的微调可以通过调整孔尺寸和/或孔间距来实现，以产生所需的基本模式的泄漏损失的操作。 与传统单模式的传统纤维和传统纤维相比，所产生的多孔纤维具有较大的孔尺寸和间距，因此具有较大的纤芯。 诸如弯曲损耗和模态间隔的其它损耗机制可以用于多孔纤维的选定操作模式。 还提供了其他实施例。

    OPTICAL FIBER PUMP MULTIPLEXER
    7.
    发明申请
    OPTICAL FIBER PUMP MULTIPLEXER 审中-公开
    光纤泵多路复用器

    公开(公告)号：WO2005052640A2

    公开(公告)日：2005-06-09

    申请号：PCT/US2004/035514

    申请日：2004-11-08

    Applicant: IMRA AMERICA, INC. ,  DONG, Liang ,  HARTER, Donald, J.

    Inventor： DONG, Liang ,  HARTER, Donald, J.

    IPC: G02B

    CPC classification number: G02B6/2551 ,  G02B6/2856 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094053 ,  H01S3/09408

    Abstract: One or more single mode few-moded or multimode fibers are incorporated into a bundle to carry input to a fiber amplifier or output from a fiber amplifier or a fiber laser. The input is at the signal wavelength, which is the wavelength where amplification or lasing occurs. Each of the fibers in the bundle is cleaved individually or as a group and fiber ends are aligned in the same plane. The fiber amplifier or fiber laser may include a double clad fiber and the other fibers of the bundle couple light for cladding pumping. The device may also include a mode filter for controlling the output mode.

    Abstract translation: 将一个或多个单模少模或多模光纤合并到光纤束中，以将输入传送到光纤放大器或光纤放大器或光纤激光器的输出。 输入处于信号波长，这是放大或激光发生的波长。 光纤束中的每根光纤都被单独切割或作为一组切割，并且光纤末端在同一平面上对齐。 光纤放大器或光纤激光器可以包括双包层光纤和束耦合光的其他光纤用于包层泵浦。 该设备还可能包含一个用于控制输出模式的模式过滤器。

    GLASS LARGE-CORE OPTICAL FIBERS
    8.
    发明公开
    GLASS LARGE-CORE OPTICAL FIBERS 审中-公开
    OPTISCHE FASERA AUS GLAS MIT GROSSEM KERN

    公开(公告)号：EP2201415A1

    公开(公告)日：2010-06-30

    申请号：EP08798892.9

    申请日：2008-08-28

    Applicant: Imra America, Inc.

    Inventor： DONG, Liang ,  LI, Jun ,  MCKAY, Hugh ,  FU, Libin ,  MARCINKEVICIUS, Andrius

    IPC: G02B6/02

    CPC classification number: G02B6/0288 ,  G02B6/02009 ,  G02B6/02333 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/02366 ,  G02B6/02371 ,  G02B6/0283 ,  G02B6/14 ,  H01S3/06729 ,  H01S3/06754 ,  H01S3/091 ,  H01S3/11

    Abstract: Embodiments of optical fiber may include cladding features that include a material (e.g., fluorine-doped silica glass) that may produce a very low relative refractive index difference with respect to cladding material in which the cladding features are disposed. This relative refractive index difference may be characterized by (n1−n2)/n1, where n1 is the index of refraction of the cladding material in which the cladding features are included, and n2 is the index of refraction of the cladding features. In certain embodiments, the relative refractive index difference may be less than about 4.5×10−3. In various embodiments, the configuration of the cladding features including, for example, the size and spacing of the cladding features, can be selected to provide for confinement of the fundamental mode yet leakage for the second mode and higher modes, which may provide mode filtering, single mode propagation, and/or low bend loss.

    Abstract translation: 光纤的实施例可以包括包括材料（例如氟掺杂石英玻璃）的包层特征，其可以产生相对于其中布置有包层特征的包覆材料的非常低的相对折射率差异。 该相对折射率差可以由（n1-n2）/ n1表征，其中n1是其中包括包层特征的包层材料的折射率，n2是包层特征的折射率。 在某些实施方案中，相对折射率差可以小于约4.5×10 -3。 在各种实施例中，可以选择包括例如包层特征的尺寸和间隔的包层特征的配置，以提供用于第二模式和更高模式的基模模式的限制，而可提供模式滤波 ，单模传播和/或低弯曲损耗。

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