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    • 23. 发明申请
    • APPARATUS AND METHOD FOR QUANTIFYING RESIDUAL STRESS OF A BIREFRINGENT MATERIAL
    • 用于定量材料残留应力的装置和方法
    • US20120176598A1
    • 2012-07-12
    • US13158434
    • 2011-06-12
    • Wei-Chung WangChi-Hung HuangYu-Cheng TsengPo-Chi Sung
    • Wei-Chung WangChi-Hung HuangYu-Cheng TsengPo-Chi Sung
    • G01B11/16
    • G01L5/0047G01L1/24
    • An apparatus for quantifying residual stress of a birefringent material comprises a light source generating light; a vertical polarizer converting a beam of light into a beam with vertical polarization; a standard material being mounted in front of the vertical polarizer; a horizontal polarizer converting a beam of light into a beam with horizontal polarization; an applied force unit applying different forces to the standard material; a spectrometer being mounted in front of the horizontal polarizer and recording intensity of light passing through the horizontal polarizer and transmittance of the standard material and a processing module being connected to the spectrometer, deriving a stress formula from the applied forces and transmittances of the standard material and obtaining a stress distribution of the birefringent material. A method for quantifying residual stress of a birefringent material is also disclosed.
    • 用于量化双折射材料的残余应力的装置包括产生光的光源; 垂直偏振器将光束转换成具有垂直偏振的光束; 标准材料安装在垂直偏振器的前面; 水平偏振器将光束转换成具有水平偏振的光束; 施加的力单元对标准材料施加不同的力; 安装在水平偏振器前面的光谱仪和记录通过水平偏振器的光的强度和标准材料的透射率以及连接到光谱仪的处理模块,从施加的力和标准材料的透射率得出应力公式 并获得双折射材料的应力分布。 还公开了一种用于量化双折射材料的残余应力的方法。
    • 26. 发明授权
    • Fused-fiber multi-window wavelength filter using unbalanced Michelson Interferometer
    • 使用不平衡迈克尔逊干涉仪的熔融纤维多窗口波长滤波器
    • US06324322B1
    • 2001-11-27
    • US09327148
    • 1999-06-07
    • Huali LuoChi-Hung HuangJoseph C. Chon
    • Huali LuoChi-Hung HuangJoseph C. Chon
    • G02B626
    • G02B6/29332G02B6/2821G02B6/29355
    • A fused-fiber multi-window wavelength filter (MWF) is constructed with an unbalanced Michelson Interferometer, in which input light passing through the fused coupling region is decoupled and travels along two fibers of different optical path lengths. The two light signals travel to the end of the two fibers, where a highly reflective coating reflects the light back toward the coupling region, where the signals are coupled again and then decoupled after exiting the coupling region. By adjusting the optical path length difference, either by changing the length or refractive index, a signal at a desired wavelength can be obtained at the filter output. The MWF can be combined with other MWFs to form more compact sized multi-window wavelength division multiplexers (MWDMs) and dense WDMs. Passive thermal compensation techniques can be applied to one or both of the reflecting fibers to maintain the desired optical path length difference.
    • 熔融纤维多窗口波长滤波器(MWF)由不平衡的迈克尔逊干涉仪构成,其中通过熔融耦合区域的输入光被去耦并沿着不同光程长度的两条光纤传播。 两个光信号行进到两个光纤的末端,其中高度反射的涂层将光反射回耦合区域,其中信号被再次耦合,然后在离开耦合区域之后解耦。 通过调整光程长度差,通过改变长度或折射率,可以在滤波器输出处获得期望波长的信号。 MWF可以与其他MWF组合以形成更紧凑的多窗口波分复用器(MWDM)和密集WDM。 被动热补偿技术可以应用于一个或两个反射光纤,以保持所需的光程长度差。