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    Optical structure writing system
    1.
    发明专利
    Optical structure writing system 有权

    公开(公告)号：JP2006518863A

    公开(公告)日：2006-08-17

    申请号：JP2006501377

    申请日：2004-02-25

    Applicant: レッドファーン オプティカル コンポーネンツ ピーティーワイ リミテッドRedfern Optical Components Pty Ltd

    Inventor： エドヴェル，ゴラン，ラルス

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

    CPC classification number: G02B6/02133 ,  G02B6/02138

    Abstract: 本発明は、導波路における光学構造の書き込みシステムに関する。 このシステムは、光線を２本のコヒーレントな書き込みビームに分割する手段と、書き込みビームが実質的に導波路内の干渉領域において干渉パターンを生成して光学構造を書き込むように、書き込みビームを実質的に同じ光路に沿って反対方向に方向付ける光学回路であって、通過して伝播する光線に制御可能な位相シフトを印加することができるように構成された少なくとも２個の音響光学変調器（ＡＯＭ）であって、使用時に各ＡＯＭが書き込みビームの一方のみをシフトすることによって書き込みビーム間の制御可能な位相差を与える２個のＡＯＭを含む前記光学回路と、を含んでいる。

    METHOD FOR DESIGNING OPTIMISED MULTI-CHANNEL GRATING STRUCTURES
    4.
    发明申请
    METHOD FOR DESIGNING OPTIMISED MULTI-CHANNEL GRATING STRUCTURES 审中-公开
    用于设计优化的多通道光栅结构的方法

    公开(公告)号：WO2007121528A1

    公开(公告)日：2007-11-01

    申请号：PCT/AU2007/000528

    申请日：2007-04-24

    Applicant: REDFERN OPTICAL COMPONENTS PTY LTD ,  BURYAK, Alexander

    Inventor： BURYAK, Alexander

    IPC: G02B6/34 ,  H04J14/02

    CPC classification number: G02B6/02123 ,  G02B6/02133 ,  G02B2006/02166 ,  H04J14/02

    Abstract: A method is described for designing a multi-channel grating structure having at least one specified spectral characteristic in a photosensitive material, the multi-channel grating structure having at least one free spectral characteristic which is not a specified spectral characteristic. An initial value is provided for each free spectral characteristic, and an initial multi-channel grating function is provided that describes an initial multi-channel grating structure by applying a spectral to spatial domain algorithm to the specified predetermined spectral characteristic using the initial value. A target multi-channel grating function is provided which describes a target multi-channel grating structure in the photosensitive material and an updated value is determined for each initial value with reference to the spectral characteristics of the target multi-channel grating function. An updated multi-channel grating function is derived which describes an updated multi-channel grating structure in the photosensitive material by applying a spectral to spatial domain algorithm to the predetermined spectral characteristic using the at least one updated value. After at least one iteration, the updated multi-channel grating function is output to describe the multi-channel grating structure.

    Abstract translation: 描述了一种用于设计在感光材料中具有至少一个特定光谱特性的多通道光栅结构的方法，该多通道光栅结构具有至少一个不是特定光谱特性的自由光谱特性。 为每个自由光谱特性提供初始值，并且提供初始多通道光栅功能，其通过使用初始值将空间域算法的光谱应用于指定的预定光谱特性来描述初始多通道光栅结构。 提供了一种目标多通道光栅功能，其描述感光材料中的目标多通道光栅结构，并且参考目标多通道光栅功能的光谱特性为每个初始值确定更新的值。 导出更新的多通道光栅函数，其通过使用至少一个更新值将光谱应用于空间域算法到预定光谱特性来描述感光材料中更新的多通道光栅结构。 在至少一次迭代之后，输出更新的多通道光栅功能以描述多通道光栅结构。

    OPTICAL STRUCTURE WRITING SYSTEM
    5.
    发明申请
    OPTICAL STRUCTURE WRITING SYSTEM 审中-公开
    光学结构书写系统

    公开(公告)号：WO2004077116A1

    公开(公告)日：2004-09-10

    申请号：PCT/AU2004/000240

    申请日：2004-02-25

    Applicant: REDFERN OPTICAL COMPONENTS PTY LTD ,  EDVELL, Goran, Lars

    Inventor： EDVELL, Goran, Lars

    IPC: G02B6/10

    CPC classification number: G02B6/02133 ,  G02B6/02138

    Abstract: The present invention relates to a system for writing an optical structure in a waveguide.. The system including, means for splitting a light beam into two coherent writing beams, an optical circuit for directing the writing beams along substantially the same optical path in opposite directions such that they produce an interference pattern in an interference region substantially within the waveguide to write the optical structure, said optical circuit including at least two acousto-optic modulators (AOMs) configured to enable a controllable phase shift to be applied to a light beam propagating therethrough, the two AOMs being arranged such that, in use, each AOM shifts the phase of only one of the writing beams, to thereby provide a controllable phase difference between the writing beams.

    Abstract translation: 本发明涉及一种用于在波导中写入光学结构的系统。该系统包括用于将光束分成两个相干写入光束的装置，用于将写入光束沿相反方向基本相同的光路引导的光学电路 使得它们在基本上在波导内的干涉区域中产生干涉图案以写入光学结构，所述光学电路包括至少两个声光调制器（AOM），其被配置为使可控相移被施加到传播的光束 两个AOM被布置成使得在使用中，每个AOM仅移动一个写入光束的相位，从而在写入光束之间提供可控的相位差。

    IMPROVED MULTI CHANNEL GRATING DESIGN
    6.
    发明申请
    IMPROVED MULTI CHANNEL GRATING DESIGN 审中-公开
    改进的多通道光栅设计

    公开(公告)号：WO2003079083A1

    公开(公告)日：2003-09-25

    申请号：PCT/AU2003/000319

    申请日：2003-03-17

    Applicant: REDFERN OPTICAL COMPONENTS PTY LTD ,  BURYAK, Alexander ,  KOLOSSOVSKI, Kazimir ,  STEPANOV, Dmitrii, Yu

    Inventor： BURYAK, Alexander ,  KOLOSSOVSKI, Kazimir ,  STEPANOV, Dmitrii, Yu

    IPC: G02B6/34

    CPC classification number: G02B6/02085 ,  G02B6/02133 ,  G02B6/29307 ,  G02B2006/02166

    Abstract: A method of calculating a sampling function for fabricating an N -channel grating, the method comprising the steps of forming a summation of N+n periodic seeding functions each describing a refractive index variation, wherein each periodic function includes a phase shift with respect to the other functions, and wherein at least one of the phase shift values is non-zero, and wherein the total number of the periodic seeding functions N+n is smaller than an upper limit given by a resolution limitation in the fabrication of the grating.

    Abstract translation: 一种计算用于制造N沟道光栅的采样函数的方法，所述方法包括以下步骤：形成每个描述折射率变化的N + n个周期性播种功能的求和，其中每个周期函数包括相对于 其他功能，并且其中相移值中的至少一个非零，并且其中周期性播种功能的总数N + n小于在光栅的制造中由分辨率限制给出的上限。

    MULTI-LAYERED STRUCTURE CHARACTERISATION
    7.
    发明申请
    MULTI-LAYERED STRUCTURE CHARACTERISATION 审中-公开
    多层结构特征

    公开(公告)号：WO2003076995A1

    公开(公告)日：2003-09-18

    申请号：PCT/AU2003/000296

    申请日：2003-03-12

    Applicant: REDFERN OPTICAL COMPONENTS PTY LTD ,  STEPANOV, Dmitrii, Yu

    Inventor： STEPANOV, Dmitrii, Yu

    IPC: G02B6/34

    CPC classification number: G02B6/02133 ,  G02B6/02123

    Abstract: A method and an apparatus (10) for characterising a multi-layered structure (28) during formation of said multi-layered structure are disclosed. The method includes the steps of measuring the complex reflectivity of the multi-layered structure (28) at a wavelength outside of the bandgap of the multi-layered structure (28) and calculating a complex coupling coefficient from the measured complex reflectivity of the multi-layered structure (28) continuously or at intervals during the formation process. The apparatus(10) includes an interferometer (24) for creating writing beams (20, 22) to form the multi-layered structure (28), such as a Bragg grating, in an optical fibre (16) and an interrogation unit (40) for measuring the complex reflectivity and for calculating the complex coupling coefficient of the multi-layered structure (28) and for producing a feedback sigal which is communicated back to the interferometer (24). The interrogation unit (40) includes an optical circuit with Mach-Zehnder or Sganac/Michelson interferometer arrangement.

    Abstract translation: 公开了一种用于在形成所述多层结构期间表征多层结构（28）的方法和装置（10）。 该方法包括以下步骤：在多层结构（28）的带隙以外的波长处测量多层结构（28）的复反射率，并根据多层结构（28）的测量复反射率计算复合耦合系数， 层状结构（28）在形成过程中连续地或间隔地进行。 该装置（10）包括用于在光纤（16）和询问单元（40）中形成写入光束（20,22）以形成诸如布拉格光栅的多层结构（28）的干涉仪（24） ），用于测量复数反射率并用于计算多层结构（28）的复耦合系数，并产生反馈到干涉仪（24）的反馈信号。 询问单元（40）包括具有马赫 - 曾德尔或Sganac /迈克逊干涉仪装置的光学电路。

    HELICAL FEEDBACK STRUCTURE
    8.
    发明申请
    HELICAL FEEDBACK STRUCTURE 审中-公开
    紧急反馈结构

    公开(公告)号：WO2003104869A1

    公开(公告)日：2003-12-18

    申请号：PCT/AU2003/000728

    申请日：2003-06-10

    Applicant: THE UNIVERSITY OF SYDNEY ,  REDFERN OPTICAL COMPONENTS PTY LTD ,  CANNING, John ,  MICHIE, Andrew ,  ENGLUND, Mark ,  GRAF, Andrew ,  EDVELL, Goran, Lars

    Inventor： CANNING, John ,  MICHIE, Andrew ,  ENGLUND, Mark ,  GRAF, Andrew ,  EDVELL, Goran, Lars

    IPC: G02B6/34

    CPC classification number: H01S5/146 ,  H01S3/0675 ,  H01S5/0607 ,  H01S5/1206

    Abstract: A helical feedback (HFB) is disclosed, the HFB structure including an optical waveguide (32) having a core, a distributed optical structure (38), such as a Bragg grating, formed in the waveguide (32) along a light propagation direction of the waveguide (32), wherein the distributed optical structure (38) exhibits a helical pitch that is greater than a linear component of a period of the distributed optical structure (38) along the propagation direction. The HFB structure can be produced by twisting the waveguide (32), forming the distributed optical structure (38) in the core of the twisted waveguide (32), and relaxing the waveguide (32). The HFB structure is suitable for use in a HFB laser exhibiting a single lasing polarisation state.

    Abstract translation: 公开了一种螺旋反馈（HFB），该HFB结构包括具有芯的光波导（32）和沿波导（32）的光传播方向形成在波导（32）中的分布式光学结构（38），例如布拉格光栅 所述波导管（32），其中所述分布式光学结构（38）呈现比沿着所述传播方向的所述分布式光学结构（38）的周期的线性分量大的螺距。 HFB结构可以通过扭转波导（32），在扭转波导（32）的芯中形成分布式光学结构（38）并且使波导（32）松弛来制造。 HFB结构适用于呈现单一激光极化状态的HFB激光器。

    COMPENSATING WAVEGUIDE PACKAGE
    9.
    发明申请
    COMPENSATING WAVEGUIDE PACKAGE 审中-公开
    补偿波导包

    公开(公告)号：WO2002097497A1

    公开(公告)日：2002-12-05

    申请号：PCT/AU2002/000681

    申请日：2002-05-28

    Applicant: REDFERN OPTICAL COMPONENTS PTY LTD ,  CROUS, Fred ,  STEPANOV, Dmitrii, Yu

    Inventor： CROUS, Fred ,  STEPANOV, Dmitrii, Yu

    IPC: G02B6/34

    CPC classification number: G02B6/0218

    Abstract: A waveguide package (50) capable of inducing strain in a waveguide (66) to compensate for a temperature induced change in an optical property of the waveguide (66), the waveguide package including at least two material components (56, 58) having different TEC properties, and wherein at least one design parameter of the waveguide package (50) is chosen such that, in use, second order effects in the induced strain as a result of second order effects in the TEC properties are reduced. The waveguide (66) can be an optical fibre and can incorporate an optical structure such as a grating.

    Abstract translation: 一种波导封装（50），其能够在波导（66）中引起应变以补偿波导（66）的光学性质的温度感应变化，所述波导封装包括至少两个具有不同的材料部件（56,58） TEC属性，并且其中选择波导封装（50）的至少一个设计参数，使得在使用中，作为TEC特性中的二阶效应的结果的诱导应变中的二次效应降低。 波导（66）可以是光纤并且可以并入光栅结构，例如光栅。

    MULTI CHANNEL GRATING DESIGN
    10.
    发明申请
    MULTI CHANNEL GRATING DESIGN 审中-公开
    多通道光栅设计

    公开(公告)号：WO2002069006A1

    公开(公告)日：2002-09-06

    申请号：PCT/AU2002/000160

    申请日：2002-02-15

    Applicant: REDFERN OPTICAL COMPONENTS PTY LTD ,  STEPANOV, Dmitrii, Yu ,  KOLOSSOVSKI, Kazimir ,  BURYAK, Alexander

    Inventor： STEPANOV, Dmitrii, Yu ,  KOLOSSOVSKI, Kazimir ,  BURYAK, Alexander

    IPC: G02B6/34

    CPC classification number: G02B6/02133 ,  G02B2006/02166 ,  G02B2006/12107

    Abstract: A method of calculating a sampling function for fabricating a N-channel grating, the method comprising the steps of forming a summation of N periodic seeding functions each describing a refractive index variation, wherein each periodic function includes a phase shift value Φ l ( l =1, ...N) with respect to the other functions, and wherein at least one phase shift value is non-zero. The sampling function may be expressed as: Σ ? exp[i (K 0 z+θ+(2l-N-1)Δκz/2+φ l ]=κQ exp[i (K 0 z+θ+ψ)], where Q=Q(z) is the amplitude and ψ=ψ(z) is the phase of the sampling function, and the summation is performed over l =1,...N. The method may further include the step of determining a set of the phase shift values for which a maximum value of the sampling function amplitude is minimised.

    Abstract translation: 一种计算用于制造N沟道光栅的采样函数的方法，所述方法包括以下步骤：形成每个描述折射率变化的N个周期性种子功能的和，其中每个周期函数包括相移值PHI l（l = 1，... N），并且其中至少一个相移值不为零。 采样函数可以表示为：SIGMA 0 l <] = kappa Q exp [ 0

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