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公开(公告)号：CA2420075C
公开(公告)日：2009-12-15
申请号：CA2420075
申请日：2001-07-20
Applicant: UNIV SYDNEY
Inventor： FLEMING SIMON , BASSETT IAN , VAN EIJKELENBORG MARTIJN , SCEATS MARK
Abstract: An optical waveguide in the form of an optical fibre (10) having at least on e 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 t he 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 cor e- surrounding region is composed. A preform for use in manufacture of the optical waveguide is also disclosed.
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公开(公告)号：DE60117021T2
公开(公告)日：2006-09-28
申请号：DE60117021
申请日：2001-07-20
Applicant: UNIV SYDNEY
Inventor： FLEMING SIMON , BASSETT IAN , SCEATS MARK , VAN EIJKELENBORG MARTIJN
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.
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公开(公告)号：DE69532074D1
公开(公告)日：2003-12-11
申请号：DE69532074
申请日：1995-02-14
Applicant: UNIV SYDNEY
Inventor： CANNING JOHN , SCEATS MARK
Abstract: PCT No. PCT/AU95/00069 Sec. 371 Date Oct. 4, 1996 Sec. 102(e) Date Oct. 4, 1996 PCT Filed Feb. 14, 1995 PCT Pub. No. WO95/22068 PCT Pub. Date Aug. 17, 1995An optical grating is formed by exposing linearly spaced regions of an optical fibre (10), typically a germanosilicate core fibre, to UV irradiation to produce spaced apart regions (12 and 13) of differing refractive index within the core (11) of the fibre. The grating characteristics are modified to create a relatively complex structure, for example a pi- shifted distributed phase structure, by post-processing the grating. This is achieved by exposing at least one concomitant region (14) of the grating to localised UV irradiation.
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公开(公告)号：CA2420075A1
公开(公告)日：2002-02-28
申请号：CA2420075
申请日：2001-07-20
Applicant: UNIV SYDNEY
Inventor： VAN EIJKELENBORG MARTIJN , SCEATS MARK , FLEMING SIMON , BASSETT IAN
Abstract: An optical waveguide in the form of an optical fibre (10) having at least on e 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 t he 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 cor e- surrounding region is composed. A preform for use in manufacture of the optical waveguide is also disclosed.
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公开(公告)号：CA2385078A1
公开(公告)日：2001-03-29
申请号：CA2385078
申请日：2000-09-21
Applicant: UNIV SYDNEY
Inventor： SCEATS MARK , STEPANOV DMITRII YU
Abstract: The present invention provides an optical device incorporating a sampled grating structure having a chirped sampling period. The present invention ma y alternatively be defined as a method of producing a grating structure in a photosensitive optical waveguide, the method comprising the step of irradiating the device with UV light at an intensity sufficient to induce refractive index variations in the waveguide in a manner to produce a sample d grating structure, and wherein the radiation is controlled in a manner to effect chirping of the sampling period. The invention may alternatively be defined as providing a group delay dispersion compensator device comprising a sampled grating structure a having chirped sampling period. It has also been recognised that a method of producing a zero dispersion WDM channel can be provided.
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Patent Agency Ranking
公开(公告)号：AU3262600A
公开(公告)日：2000-10-09
申请号：AU3262600
申请日：2000-03-20
Applicant: UNIV SYDNEY
Inventor： BAZYLENKO MICHAEL , SCEATS MARK
IPC: G02B6/13
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公开(公告)号：CA2332517A1
公开(公告)日：1999-12-29
申请号：CA2332517
申请日：1999-05-26
Applicant: UNIV SYDNEY
Inventor： POLADIAN LEON , SCEATS MARK
Abstract: A method of forming a complete grating structure on a photosensitive wavegui de is disclosed comprising the steps of: (a) writing an initial portion of the grating structure on the waveguide; (b) testing the properties of the initia l portion to determine a series of parameters of the initial portion; (c) utilizing the parameters to alter the characteristics of a subsequently written portion of the grating structure to provide for an improved form of grating structure; (d) iterating the steps (a) to (c) so as to form the complete grating structure. The writing can be performed utilizing a coheren ce pattern formed from the interference of two coherent beams on the waveguide. The characteristics can include the intensity or phase of the subsequently written portion. The testing may include determining the spectral reflectanc e response of the initial portion or determining the spectral phase delay of t he initial portion.
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公开(公告)号：CA2332992A1
公开(公告)日：1999-12-09
申请号：CA2332992
申请日：1999-05-28
Applicant: UNIV SYDNEY
Inventor： STEPANOV DMITRII , SCEATS MARK
Abstract: At least two beams of light form an interference pattern (39) for writing a grating structure on a photosensitive waveguide (38), where the interference pattern (39) is controlled by modulating the relative phase of the beams. Th e modulation may be via an electro-optic, magneto-optic, or acousto-optic phas e modulator (34), or via a mechanically driven phase modulator (34) comprising a wedge, waveplate or phase mask. In the latter case the phase mask can also a ct as a beamsplitter (33) for forming the beams. Extended gratings can be writt en by moving the waveguide (38) while controlling the relative phase shift, and can comprise chirped, apodized and arbitratry grating profiles. Noise can be reduced via an optoelectronic feedback loop. In one embodiment the relative phase is modulated via an electro-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 interferen ce pattern (39).
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公开(公告)号：DE60117021D1
公开(公告)日：2006-04-13
申请号：DE60117021
申请日：2001-07-20
Applicant: UNIV SYDNEY
Inventor： FLEMING SIMON , BASSETT IAN , SCEATS MARK , VAN EIJKELENBORG MARTIJN
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.
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公开(公告)号：AU773951B2
公开(公告)日：2004-06-10
申请号：AU3262600
申请日：2000-03-20
Applicant: UNIV SYDNEY
Inventor： BAZYLENKO MICHAEL , SCEATS MARK
IPC: G02B6/13
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