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    15.
    发明专利
    未知

    公开(公告)号：DK1320774T3

    公开(公告)日：2006-06-12

    申请号：DK01951247

    申请日：2001-07-20

    Applicant: UNIV SYDNEY

    Inventor： FLEMING SIMON ,  BASSETT IAN ,  SCEATS MARK ,  VAN EIJKELENBORG MARTIJN

    IPC: G02B6/00 ,  G02B6/032 ,  G02B6/02

    Abstract: An optical waveguide in the form of an optical fibre ( 10 ) having at least one longitudinally extending light guiding core region ( 11 ) composed at least in part of a polymeric material, a longitudinally extending core-surrounding region ( 12 ) composed of a polymeric material, and a plurality of light confining elements ( 15 ), such as, for example, channel-like holes, located within the core surrounding region. The light confining elements extend in the longitudinal direction of the core region and are distributed about the core region, and at least a majority of the light confining elements having a refractive index less than that of the polymeric material from which the core-surrounding region is composed. A preform for use in manufacture of the optical waveguide is also disclosed.

    16.
    发明专利
    未知

    公开(公告)号：AT317131T

    公开(公告)日：2006-02-15

    申请号：AT01951247

    申请日：2001-07-20

    Applicant: UNIV SYDNEY

    Inventor： FLEMING SIMON ,  BASSETT IAN ,  SCEATS MARK ,  VAN EIJKELENBORG MARTIJN

    IPC: G02B6/00 ,  G02B6/02 ,  G02B6/032

    Abstract: An optical waveguide in the form of an optical fibre ( 10 ) having at least one longitudinally extending light guiding core region ( 11 ) composed at least in part of a polymeric material, a longitudinally extending core-surrounding region ( 12 ) composed of a polymeric material, and a plurality of light confining elements ( 15 ), such as, for example, channel-like holes, located within the core surrounding region. The light confining elements extend in the longitudinal direction of the core region and are distributed about the core region, and at least a majority of the light confining elements having a refractive index less than that of the polymeric material from which the core-surrounding region is composed. A preform for use in manufacture of the optical waveguide is also disclosed.

    18.
    发明专利
    未知

    公开(公告)号：DE69906282D1

    公开(公告)日：2003-04-30

    申请号：DE69906282

    申请日：1999-05-28

    Applicant: UNIV SYDNEY

    Inventor： STEPANOV DMITRII ,  SCEATS MARK

    IPC: G02B5/18 ,  G02B6/02 ,  G02B6/10 ,  G02B5/28

    Abstract: A method of writing a grating structure with at least one of predetermined amplitude, period and phase properties in a photosensitive waveguide, the method comprising providing at least two light beams which overlap in an overlap region to form an interference pattern; moving the photosensitive waveguide through the overlap region; and modulating the phase of at least one of the light beams relative to the phase of the other light beams using a non-mechanical beam modulator so that the interference pattern appears to move through the overlap region, the apparent movement being variably controlled in response to the movement of the photosensitive waveguide such that a grating structure is written with the at least one of predetermined amplitude, period and phase properties. The apparent movement of the interference pattern may be variably controlled to match the movement of the waveguide, or to be deliberately detuned. The grating structure may be chirped or apodized.

    WAVEGUIDE STRUCTURE AND METHOD OF FORMING THE WAVEGUIDE STRUCTURE
    19.
    发明专利
    WAVEGUIDE STRUCTURE AND METHOD OF FORMING THE WAVEGUIDE STRUCTURE 未知

    公开(公告)号：CA2367044A1

    公开(公告)日：2000-09-28

    申请号：CA2367044

    申请日：2000-03-20

    Applicant: UNIV SYDNEY

    Inventor： BAZYLENKO MICHAEL ,  SCEATS MARK

    IPC: G02B6/12 ,  G02B6/122 ,  G02B6/13 ,  G02B6/132 ,  G02B6/30 ,  G02F1/01 ,  G02F1/025 ,  G02F1/035 ,  G02F1/225

    Abstract: A method for forming a high optical confinement waveguide structure comprisi ng the steps of: forming a silicon-based waveguide on a substrate by depositing a waveguide layer of silicon containing material onto the substrate; wherein t he material is selected in a manner such that the refractive index of the waveguide is greater than the refractive index of the substrate; wherein the forming of the silicon-based waveguide further comprises etching the deposit ed waveguide structure such as to form a ridge structure in the deposited waveguide layer; wherein the method further comprises the step of forming an optical signal processing element in and integrated with the deposited waveguide layer.

    CONTROLLED PHASE DELAY BETWEEN BEAMS FOR WRITING BRAGG GRATINGS
    20.
    发明专利
    CONTROLLED PHASE DELAY BETWEEN BEAMS FOR WRITING BRAGG GRATINGS 未知

    公开(公告)号：CA2332992C

    公开(公告)日：2009-12-22

    申请号：CA2332992

    申请日：1999-05-28

    Applicant: UNIV SYDNEY

    Inventor： SCEATS MARK ,  STEPANOV DMITRII

    IPC: G02B5/28 ,  G02B5/18 ,  G02B6/02 ,  G03F7/00

    Abstract: At least two beams of light form an inter-ference pattern (39) for writing a grating structure on a photosensitive waveguide (38), where the in-terference pattern (39) is controlled by modulat-ing the relative phase of the beams. The modula-tion may be via an electro-optic, magneto-optic, or acousto-optic phase modulator (34), or via a mechanically driven phase modulator (34) com-prising a wedge, waveplate or phase mask. In the latter case the phase mask can also act as a beam-splitter (33) for forming the beams. Extended gratings can be written by moving the waveguide (38) while controlling the relative phase shift, and can comprise chirped, apodized and arbitra-try grating profiles. Noise can be reduced via an optoelectronic feedback loop. In one embodi-ment the relative phase is modulated via an elec-tro-optic modulator (32) acting on a polarized beam, which is then split into two beams by a polarisation beamsplitter (33) such that one beam passes through a half-wave plate (34), to form interference pattern (39).

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