PRISM-COUPLING SYSTEMS AND METHODS FOR CHARACTERIZING LARGE DEPTH-OF-LAYER WAVEGUIDES
    31.
    发明申请
    PRISM-COUPLING SYSTEMS AND METHODS FOR CHARACTERIZING LARGE DEPTH-OF-LAYER WAVEGUIDES 有权
    用于表征大量深层波长的PRISM耦合系统和方法

    公开(公告)号:US20150338308A1

    公开(公告)日:2015-11-26

    申请号:US14707431

    申请日:2015-05-08

    Abstract: Prism-coupling systems and methods for characterizing large depth-of-layer waveguides are disclosed. The systems and methods utilize a coupling prism having a coupling angle α having a maximum coupling angle αmax at which total internal reflection occurs. The prism angle α is in the range 0.81αmax≦α≦0.99αmax. This configuration causes the more spaced-apart lower-order mode lines to move closer together and the more tightly spaced higher-order mode lines to separate. The adjusted mode-line spacing allows for proper sampling at the detector of the otherwise tightly spaced mode lines. The mode-line spacings of the detected mode spectra are then corrected via post-processing. The corrected mode spectra are then processed to obtain at least one characteristic of the waveguide.

    Abstract translation: 公开了用于表征大深度深度波导的棱镜耦合系统和方法。 这些系统和方法利用具有耦合角度α的耦合棱镜,其具有发生全内反射的最大耦合角度αmax。 棱镜角α在0.81αmax≦̸α≦̸0.99αmax的范围内。 这种配置使更多间隔开的低阶模式线移动得更近,并且更紧密间隔的高阶模式线分离。 经调整的模式线间距允许在否则紧密间隔的模式线的检测器处进行适当的采样。 然后通过后处理校正检测模式谱的模式线间隔。 然后处理校正的模式光谱以获得波导的至少一个特性。

    APPARATUS AND METHODS FOR MEASURING MODE SPECTRA FOR ION-EXCHANGED GLASSES HAVING STEEP INDEX REGION
    33.
    发明申请
    APPARATUS AND METHODS FOR MEASURING MODE SPECTRA FOR ION-EXCHANGED GLASSES HAVING STEEP INDEX REGION 有权
    用于测量带有指示区域的离子交换玻璃的模式光谱的装置和方法

    公开(公告)号:US20150116713A1

    公开(公告)日:2015-04-30

    申请号:US14523171

    申请日:2014-10-24

    Abstract: Apparatus and methods for measuring mode spectra for ion-exchanged glass substrates having a steep index region are disclosed. An interfacing fluid is provided between the coupling prism and the glass substrate. The interfacing fluid thickness is selected so that the variation in modal birefringence with fluid thickness is reduced to an acceptable level. The coupling prism can include a prism coating on the coupling surface so that the substrate-prism interface includes the prism coating. The coupling prism can also include stand-off members that serve to define the thickness of the interfacing fluid.

    Abstract translation: 公开了用于测量具有陡峭折射率区域的离子交换玻璃基板的模式光谱的装置和方法。 在耦合棱镜和玻璃基板之间提供界面流体。 选择界面流体厚度,使得具有流体厚度的模态双折射的变化减小到可接受的水平。 耦合棱镜可以包括在耦合表面上的棱镜涂层,使得基板 - 棱镜界面包括棱镜涂层。 连接棱镜还可以包括用于限定界面流体的厚度的间隔构件。

    SYSTEMS AND METHODS FOR MEASURING BIREFRINGENCE IN GLASS AND GLASS-CERAMICS
    34.
    发明申请
    SYSTEMS AND METHODS FOR MEASURING BIREFRINGENCE IN GLASS AND GLASS-CERAMICS 有权
    用于测量玻璃和玻璃 - 陶瓷中的双相的系统和方法

    公开(公告)号:US20140092377A1

    公开(公告)日:2014-04-03

    申请号:US14033954

    申请日:2013-09-23

    CPC classification number: G01N21/23 G01J4/04

    Abstract: Systems and methods of for measuring birefringence and stress in a sample made of ion-exchanged glass or a ceramic are disclosed, wherein the method includes digitally capturing TE and TM angular spectra of intensity versus pixel number for the sample. The TE and TM angular spectra are processed to minimize differences between respective regions of the TE and TM angular spectra. The amount of shift in pixels that best overlaps the processed TE and TM spectra is determined. The birefringence B is calculated by multiplying the pixel shift by the index resolution. The stress is calculated by multiplying the birefringence by the stress-optic coefficient.

    Abstract translation: 公开了用于测量由离子交换玻璃或陶瓷制成的样品中的双折射和应力的系统和方法,其中所述方法包括数字捕获样品的强度与像素数的TE和TM角谱。 处理TE和TM角谱以最小化TE和TM角谱的各个区域之间的差异。 确定与被处理的TE和TM光谱最佳重叠的像素移动量。 通过将像素移位乘以索引分辨率来计算双折射率B。 通过将双折射乘以应力光学系数来计算应力。

    CHEMICALLY STRENGTHENED GLASS-BASED ARTICLES

    公开(公告)号:US20250002393A1

    公开(公告)日:2025-01-02

    申请号:US18743855

    申请日:2024-06-14

    Abstract: A lithium aluminosilicate glass-based article includes greater than or equal to 55.0 mol % and less than or equal to 75.0 mol % SiO2, greater than or equal to 1.0 mol % and less than or equal to 18.0 mol % Al2O3, and greater than or equal to 9.0 mol % and less than or equal to 25.0 mol % Li2O. The glass-based article has a thickness less than 0.74 mm, a fracture toughness of the mid-plane composition of the glass-base article is greater than or equal to 0.75 MPα√{square root over (m)}, and a depth of compression that is greater than or equal to 0.14t, where t is the thickness of the glass-based article. The glass-based article is designed to have a single guided mode in the prism coupling spectrum at a wavelength between 360 nm and 405 nm for at least one of the transverse-magnetic or transverse-electric polarization.

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