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    • 3. 发明授权
    • Etched surface gratings fabricated using computed interference between simulated optical signals and reduction lithography
    • 使用模拟光信号和还原光刻之间的计算干涉制造的蚀刻表面光栅
    • US07840106B1
    • 2010-11-23
    • US12191068
    • 2008-08-13
    • Dmitri IazikovChristoph M. GreinerThomas W. Mossberg
    • Dmitri IazikovChristoph M. GreinerThomas W. Mossberg
    • G02B6/34
    • G02B5/1847G02B5/1861G02B6/02142G02B6/29308G02B6/2931
    • An optical apparatus comprises a set of diffractive elements on a substrate. They are arranged: (i) to receive an input signal propagating from an input port as a diffraction-guided optical beam, (ii) to diffract a portion of the received input signal as an output signal, (iii) to route the output signal to propagate to an output port as a diffraction-guided optical beam, and (iv) to exhibit a positional variation in diffractive amplitude, optical separation, or spatial phase over some portion of the set. The arrangement of the diffractive elements corresponds to an interference pattern derived from computed interference at a surface of the substrate between a simulated design input and output optical signals. Each diffractive element comprises at least one trench segment positioned along a path defined by a constant-phase contour of the interference pattern. Each trench segment is substantially rectangular or trapezoidal in transverse cross section.
    • 光学装置包括在基板上的一组衍射元件。 它们被布置为:(i)接收作为衍射引导光束从输入端口传播的输入信号,(ii)将接收的输入信号的一部分衍射为输出信号,(iii)将输出信号 作为衍射光束传播到输出端口,以及(iv)在集合的某一部分上呈现衍射幅度,光学分离或空间相位的位置变化。 衍射元件的布置对应于从模拟设计输入和输出光信号之间的衬底表面处的计算出的干涉导出的干涉图案。 每个衍射元件包括沿着由干涉图案的恒定相位轮廓限定的路径定位的至少一个沟槽段。 每个沟槽段在横截面上基本为矩形或梯形。
    • 4. 发明申请
    • Highly efficient optical gratings with reduced thickness requirements and impedance- matching layers
    • 具有较低厚度要求和阻抗匹配层的高效光栅
    • US20090116790A1
    • 2009-05-07
    • US12265721
    • 2008-11-05
    • Thomas W. MossbergChristoph M. GreinerDmitri Iazikov
    • Thomas W. MossbergChristoph M. GreinerDmitri Iazikov
    • G02B6/34B29D11/00
    • G02B6/02057B29D11/0074G02B5/1809G02B6/02076
    • An optical grating comprising a grating layer and two surface layers, the layers being arranged with the grating layer between the surface layers. The grating layer comprises a set of multiple, discrete, elongated first grating regions that comprise a first dielectric material and are arranged with intervening elongated second grating regions. The bulk refractive index of the dielectric material of the first grating regions is larger than the bulk refractive index of the second grating regions. The first surface layer comprises a first impedance matching layer, and the second surface layer comprises either (i) a second impedance matching layer or (ii) a reflective layer. Each said impedance matching layer is arranged to reduce reflection of an optical signal transmitted through the corresponding surface of the grating layer, relative to reflection of the optical signal in the absence of said impedance matching layer.
    • 包括光栅层和两个表面层的光栅,所述层与所述表面层之间的所述光栅层布置。 光栅层包括一组多个离散的细长的第一光栅区域,其包括第一电介质材料并且布置有中间细长的第二光栅区域。 第一光栅区域的电介质材料的体积折射率大于第二光栅区域的体折射率。 第一表面层包括第一阻抗匹配层,第二表面层包括(i)第二阻抗匹配层或(ii)反射层。 每个所述阻抗匹配层被布置成相对于在没有所述阻抗匹配层的情况下相对于光信号的反射来减少透射通过光栅层的对应表面的光信号的反射。
    • 5. 发明授权
    • Multimode planar waveguide spectral filter
    • 多模平面波导光谱滤波器
    • US07499612B2
    • 2009-03-03
    • US11334039
    • 2006-01-17
    • Thomas W. MossbergChristoph M. GreinerDmitri Iazikov
    • Thomas W. MossbergChristoph M. GreinerDmitri Iazikov
    • G02B6/34
    • G03H1/0248G02B5/203G02B5/32G02B6/124G02B6/29325G02B2006/12164G03H1/0005
    • A spectral filter comprises a planar optical waveguide having at least one set of diffractive elements. The waveguide confines in one transverse dimension an optical signal propagating in two other dimensions therein. The waveguide supports multiple transverse modes. Each diffractive element set routes, between input and output ports, a diffracted portion of the optical signal propagating in the planar waveguide and diffracted by the diffractive elements. The diffracted portion of the optical signal reaches the output port as a superposition of multiple transverse modes. A multimode optical source may launch the optical signal into the planar waveguide, through the corresponding input optical port, as a superposition of multiple transverse modes. A multimode output waveguide may receive, through the output port, the diffracted portion of the optical signal. Multiple diffractive element sets may route corresponding diffracted portions of optical signal between one or more corresponding input and output ports.
    • 光谱滤波器包括具有至少一组衍射元件的平面光波导。 波导在一个横向尺寸上限制在其中两个其它维度上传播的光信号。 波导支持多种横向模式。 每个衍射元件组在输入和输出端口之间路由在平面波导中传播并被衍射元件衍射的光信号的衍射部分。 光信号的衍射部分作为多个横向模式的叠加到达输出端口。 多模光源可以通过相应的输入光端口将光信号发射到平面波导中,作为多个横向模式的叠加。 多模输出波导可以通过输出端口接收光信号的衍射部分。 多个衍射元件组可以在一个或多个相应的输入和输出端口之间路由对应的光信号衍射部分。
    • 6. 发明授权
    • Birefringence control in planar optical waveguides
    • 平面光波导中的双折射控制
    • US07359597B1
    • 2008-04-15
    • US11210439
    • 2005-08-23
    • Dmitri IazikovChristoph M. GreinerThomas W. Mossberg
    • Dmitri IazikovChristoph M. GreinerThomas W. Mossberg
    • G02B6/34
    • G02B6/105G02B6/124
    • A planar optical waveguide has a set of diffractive elements and confines propagating optical signals in at least one transverse spatial dimension. Each diffractive element set routes, between input and output ports, a corresponding diffracted portion of an input optical signal propagating in the planar optical waveguide that is diffracted by the diffractive element set. The input optical signal is successively incident on the diffractive elements. A desired level of birefringence for a chosen signal optical transverse mode is determined at least in part by i) selected areal density of diffractive elements, ii) selected diffractive element height and position along the confined transverse spatial dimension, iii) selected thicknesses and indices of materials comprising the diffractive elements, or iv) selected thicknesses and stress-optical coefficients of materials comprising the planar optical waveguide, and selected thermal expansion coefficient differentials among materials comprising the planar optical waveguide or comprising a waveguide substrate thereof.
    • 平面光波导具有一组衍射元件并限制在至少一个横向空间维度上传播的光信号。 每个衍射元件组在输入和输出端口之间路由在由衍射元件组衍射的平面光波导中传播的输入光信号的对应衍射部分。 输入光信号依次入射到衍射元件上。 所选择的信号光学横向模式的期望水平的双折射至少部分地由i)衍射元件的选择的面密度确定,ii)选定的衍射元件高度和沿着约束横向空间维度的位置,iii)选定的厚度和指数 包括衍射元件的材料,或iv)包括平面光波导的材料的选定厚度和应力 - 光学系数,以及包括平面光波导的材料或包括其波导基板的材料中选择的热膨胀系数差。
    • 7. 发明授权
    • Integrated optical spectrometer incorporating sets of diffractive elements
    • 集成光谱仪,包含一组衍射元件
    • US07330614B1
    • 2008-02-12
    • US11298290
    • 2005-12-09
    • Thomas W. MossbergDmitri IazikovChristoph M. Greiner
    • Thomas W. MossbergDmitri IazikovChristoph M. Greiner
    • G02B6/12
    • G02B6/12007
    • An exemplary optical apparatus comprises: an optical element having multiple sets of diffractive elements; and a photodetector. The diffractive elements of each set are collectively arranged so as to comprise corresponding spectral and spatial transformation information for each set. At least two of the sets differ with respect to their corresponding spectral and spatial transformation information. The diffractive elements of each of the sets are collectively arranged so as to transform a portion of an input optical signal into a corresponding output optical signal according to the corresponding spectral and spatial transformation information. At least one photodetector is positioned for receiving at least one of the corresponding output optical signals.
    • 一种示例性光学装置包括:具有多组衍射元件的光学元件; 和光电检测器。 每组的衍射元件被集体布置,以便包括每组的对应的光谱和空间变换信息。 至少两个集合相对于它们相应的光谱和空间变换信息而不同。 各集合的衍射元件共同设置,以便根据相应的光谱和空间变换信息将输入光信号的一部分变换成相应的输出光信号。 定位至少一个光电检测器用于接收相应的输出光信号中的至少一个。