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    OPTICAL FIBER PUMP MULTIPLEXER
    2.
    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。

    LARGE CORE HOLEY FIBERS
    4.
    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。

    PULSED LASER SOURCES
    5.
    发明申请
    PULSED LASER SOURCES 审中-公开
    脉冲激光源

    公开(公告)号：WO2005048417A2

    公开(公告)日：2005-05-26

    申请号：PCT/US2004/038652

    申请日：2004-11-10

    Applicant: IMRA AMERICA, INC.

    Inventor： FERMANN, Martin, E. ,  HARTL, Ingmar ,  IMESHEV, Gennady ,  HARTER, Donald, J.

    IPC: H01S

    CPC classification number: H01S3/0057 ,  G02F1/3517 ,  G02F2001/3528 ,  H01S3/0078 ,  H01S3/0092 ,  H01S3/067 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094042 ,  H01S3/10 ,  H01S3/105 ,  H01S3/1053 ,  H01S3/106 ,  H01S3/1067 ,  H01S3/109 ,  H01S3/1106 ,  H01S3/1118 ,  H01S3/1616

    Abstract: Various embodiments include modelocked fiber laser resonators that may be coupled with optical amplifiers. An isolator may separate the laser resonator from the amplifier, although certain embodiments exclude such an isolator. A reflective optical element on one end of the resonator having a relatively low reflectivity may be employed to couple light from the laser resonator to the amplifier. Enhanced pulse-width control may be provided with concatenated sections of both polarization-maintaining and non-polarization-maintaining fibers. Apodized fiber Bragg gratings and integrated fiber polarizers may be also be included in the laser cavity to assist in linearly polarizing the output of the cavity. Very short pulses with a large optical bandwidth may be obtained by matching the dispersion value of the fiber Bragg grating to the inverse of the dispersion of the intra-cavity fiber. Frequency comb sources may be constructed from such modelocked fiber oscillators. In various exemplary embodiments, low dispersion and an in-line interferometer that provides feedback, assist in controlling the frequency components output from the comb source.

    Abstract translation: 各种实施例包括可与光放大器耦合的锁模光纤激光谐振器。 隔离器可以将激光谐振器与放大器分离，尽管某些实施例不包括这种隔离器。 可以使用具有相对较低反射率的谐振器的一端上的反射光学元件将来自激光谐振器的光耦合到放大器。 可以提供增强的脉冲宽度控制，其具有两个偏振保持和非偏振保持光纤的级联部分。 变形光纤布拉格光栅和集成光纤偏振器也可以被包括在激光腔中，以帮助线性偏振空腔的输出。 可以通过将光纤布拉格光栅的色散值与腔内光纤的色散相反来获得具有大光学带宽的非常短的脉冲。 频率梳源可以由这种锁模光纤振荡器构成。 在各种示例性实施例中，提供反馈的低色散和在线干涉仪有助于控制从梳状源输出的频率分量。

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