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    Balanced gain flattening filters
    1.
    发明授权
    Balanced gain flattening filters 失效
    平衡增益平坦化滤波器

    公开(公告)号：US6445493B2

    公开(公告)日：2002-09-03

    申请号：US42605199

    申请日：1999-10-25

    Applicant: CORNING INC

    Inventor： KOHNKE GLENN E ,  WU QI

    IPC: G02B5/20 ,  G02B5/18 ,  G02B6/34 ,  H01S3/10 ,  H04B10/02 ,  H04B10/16 ,  H04B10/17 ,  H04B10/18 ,  H01S3/00

    CPC classification number: G02B6/29391 ,  G02B6/29343 ,  G02B6/29395 ,  H01S3/10023 ,  H01S2301/04 ,  H04B10/2941

    Abstract: Compound gain flattening filters of optical amplification include a series of filter components with spectral responses that are combined to approach a target loss spectrum. Small variations in the central wavelengths of the component responses can produce large errors in the combined response of the compound gain flattening filter. However, the components can be divided into sub-components with balanced central wavelength deviations to achieve the desired response goals despite exhibiting otherwise detrimental wavelength deviations.

    Abstract translation: 光放大的复合增益平坦化滤波器包括具有光谱响应的一系列滤波器组件，其被组合以接近目标损耗谱。 组分响应的中心波长的小变化可能在复合增益平坦化滤波器的组合响应中产生大的误差。 然而，尽管表现出其他有害的波长偏差，但是组件可以被分成具有平衡的中心波长偏差的子部件，以实现期望的响应目标。

    Thin film semiconductor photovoltaic device
    2.
    发明专利
    Thin film semiconductor photovoltaic device 未知

    公开(公告)号：AU2009320022A1

    公开(公告)日：2010-06-03

    申请号：AU2009320022

    申请日：2009-11-02

    Applicant: CORNING INC

    Inventor： BHAGAVATULA VENKATA A ,  KOHNKE GLENN E

    IPC: H01L31/042 ,  H01L31/052

    Abstract: A substantially transparent substrate having first and second major surfaces and a plurality of side surfaces; a thin-film semiconductor layer coupled to the first major surface of the substrate and including first and second major surfaces and at least one photo-sensitive p-n junction therein; and a light directing feature operable to cause incident light to propagate through the substrate and into the semiconductor layer in a waveguide mode such that the light reflects a plurality of times between the first and second major surfaces of the semiconductor layer and impinges upon the p-n junction a plurality of times

    Twisted long-period fiber grating and method for reducing polarization dependentloss and shifting wavelength of long-period fiber grating
    3.
    发明专利
    Twisted long-period fiber grating and method for reducing polarization dependentloss and shifting wavelength of long-period fiber grating 未知

    公开(公告)号：AU5084001A

    公开(公告)日：2001-11-20

    申请号：AU5084001

    申请日：2001-03-14

    Applicant: CORNING INC

    Inventor： CLINE JERROLD A ,  KOHNKE GLENN E

    IPC: G02B6/02 ,  G02B6/34

    Abstract: A long-period fiber grating includes a fiber having a core surrounded by a cladding, and a plurality of refractive index variations periodically spaced along the longitudinal axis of a portion of the core of the fiber. The fiber is twisted throughout at least a portion of its length that includes the plurality of refractive index variations. By twisting the long-period fiber grating, polarization dependent loss is reduced by as much as 30 percent. Also, the peak wavelength of the light propagating through the long-period fiber grating that is coupled into the cladding of the fiber may be adjusted. The peak wavelength may be adjusted in as little as 0.1 nm increments by twisting the long-period fiber grating after the grating has been written and annealed.

    AMPLITUDE TUNABLE FILTER
    5.
    发明专利
    AMPLITUDE TUNABLE FILTER 未知

    公开(公告)号：CA2372905A1

    公开(公告)日：2000-11-23

    申请号：CA2372905

    申请日：2000-04-24

    Applicant: CORNING INC

    Inventor： CHEN GANG ,  KOHNKE GLENN E ,  DAWES STEVEN B ,  WELLER-BROPHY LAURA A

    IPC: G02B6/00 ,  G02B6/02 ,  G02B6/34 ,  G02F1/01 ,  G02B6/26

    Abstract: A dynamically tunable filter (10) controls the magnitude of couplings betwee n core (16) and cladding (18) modes of a waveguide by surrounding the waveguid e with an overcladding (20) having an adjustable refractive index. The coupled modes are attenuated along the core to produce the desired spectral response . The adjustment to the overcladding (20) index is made in a range that is abo ve the refractive index of the underlying cladding (18) to vary amplitudes of attenuated bands of wavelengths without shifting central wavelengths of the bands.

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