公开(公告)号：US5586205A

公开(公告)日：1996-12-17

申请号：US419603

申请日：1995-04-10

申请人： Tien-Jung Chen ,  Shu-Hsia Chen

发明人： Tien-Jung Chen ,  Shu-Hsia Chen

IPC分类号： G02B6/14 ,  G02B6/34 ,  G02B6/26 ,  G02F1/13

CPC分类号： G02B6/2726 ,  G02B6/14 ,  G02B6/02047

摘要： An apparatus for selecting waveguide modes in optical fibers is disclosed, which comprises an optical fiber having of a core and a cladding sheathing the core. The optical fiber has a selected portion of the cladding removed and forms a recessed space in the cladding while preserving a predetermined thickness of the cladding remaining covering the core. The optical fiber is selected for allowing the transmission of light having multiple waveguide modes with radial and azimuthal electric field components. The apparatus further comprises a birefringent material filled in the recessed space. The birefringent material has the first and second refractive indices and the first refractive index is larger than the core index of the optical fiber, while the second refractive index is smaller than the cladding index of the optical fiber. The first and second refractive indices of the birefringent material are arranged in the radial and azimuthal directions of the optical fiber respectively, so that the transmitted light of the waveguide mode with the radial electric field component is coupled out from the core of the optical fiber to the selective portion of the cladding, and the transmitted light of the waveguide mode with only the azimuthal electric field component remains transmitted through the optical fiber.

摘要翻译： 公开了一种在光纤中选择波导模式的装置，其包括具有芯和包覆芯的包层的光纤。 光纤具有被去除的包层的选定部分，并在包层中形成凹陷空间，同时保留覆盖芯的预定厚度的覆层。 选择光纤以允许具有径向和方位电场分量的具有多个波导模式的光的透射。 该装置还包括填充在凹陷空间中的双折射材料。 双折射材料具有第一和第二折射率，并且第一折射率大于光纤的纤芯折射率，而第二折射率小于光纤的包层指数。 双折射材料的第一和第二折射率分别沿光纤的径向和方位方向布置，使得具有径向电场分量的波导模式的透射光从光纤的核心耦合到 包层的选择部分和仅具有方位电场分量的波导模式的透射光保持透射通过光纤。

公开(公告)号：US07030992B2

公开(公告)日：2006-04-18

申请号：US10447623

申请日：2003-05-29

申请人： Tien-Jung Chen ,  Shu-Hsia Chen

发明人： Tien-Jung Chen ,  Shu-Hsia Chen

IPC分类号： G01B9/02

CPC分类号： G01K11/32 ,  G01D5/35332 ,  G01D5/3538

摘要： A fiber-optic interferometer is provided. The interferometer includes a first dual-mode optical fiber for receiving a light input and exciting a first and a second spatial, modes, a first modal processor connected to the first dual-mode optical fiber for selecting the first and the second spatial modes, a second dual-mode optical fiber connected to the first modal processor for propagating the first and the second spatial modes and producing a phase shift (Δφ) between the first and the second spatial modes in response to an external perturbation effect, a second modal processor connected to the second dual-mode optical fiber for re-selecting the first and the second spatial modes and producing a first light output interference pattern, and an analyzer connected to the second modal filter for adjusting the first light output interference pattern to produce a second light output interference pattern.

摘要翻译： 提供了一种光纤干涉仪。 干涉仪包括用于接收光输入并激励第一和第二空间模式的第一双模光纤，连接到第一双模光纤以用于选择第一和第二空间模式的第一模态处理器， 连接到第一模态处理器的第二双模光纤，用于传播第一和第二空间模式，并且响应于外部扰动效应产生第一和第二空间模式之间的相移（Deltaphi），第二模式处理器连接 到第二双模光纤，用于重新选择第一和第二空间模式并产生第一光输出干涉图案;以及分析器，连接到第二模式滤波器，用于调节第一光输出干涉图案以产生第二光 输出干扰模式。